How to choose the right wall-mounted heating gas boiler? Rating of gas boilers for heating a private home: varieties, technical characteristics, prices Which gas boiler is better to choose

You have installed a gas pipeline to your country cottage or... The next stage is the selection of gas heating equipment. The task is not easy - the variety of household boilers in online stores will bewilder any inexperienced homeowner. Accordingly, our goal is to review the existing types of units and explain how to choose the right gas boiler for heating a private house, cottage or apartment.

What you need to know to select a heater

You can’t just go to the store and buy a gas heating boiler. To choose a suitable model, you need to prepare a list of requirements for the unit - determine the thermal power, required functions, installation method and other initial data.

What items are included in the list:

Calculate the amount of heat required to heat a cottage or apartment.
Outline the range of tasks for a gas boiler - it should only heat the building or, in addition, serve as a water heater for household needs.
Set aside a space for installing a heat generator. The rules allow the installation of gas-fired heating equipment in the kitchen (power up to 60 kW), attached boiler room, or in another separate room located near the outer wall of the home.
Determine the method of installing the boiler - floor or wall. For apartments, only the hanging option is suitable.
Consider the operating principle of your heating system. For a gravitational circuit with natural circulation of coolant (so-called gravity flow), an appropriate energy-independent heater that operates without electricity is selected.
Set the level of automation of the device according to your wishes. Examples of useful functions: maintaining indoor temperature according to a schedule or signals from an external weather sensor, remote control via the Internet and so on.
Estimate the prices of various boilers and find out how much you are willing to spend on purchasing a gas boiler.

Note. The rules for the placement and connection of gas-using installations intended for heating and hot water supply are set out in the publication about.

Before choosing a new one or replacing an outdated gas boiler for heating a private home, we highly recommend consulting the customer service department of Gorgaz (or another management company). Why is this needed:

in addition to the general rules, regional offices have internal instructions that limit the use of gas equipment; these points are worth clarifying;
a new or replaced boiler must be included in the project documentation, otherwise you risk incurring a fine for installation without approval;
Our specialists will help you place the heat generator correctly in your home.

The boiler house design indicates the location of all heat generators with dimensional references to building structures

Clarification regarding internal instructions. Gorgaz often introduce their own restrictions, for example, they may prohibit the installation of an atmospheric boiler next to a forced kitchen hood. The reason is the absence.

Another example: you want to take him out of the room apartment building horizontal (coaxial) chimney, but the office does not approve this solution, since the protruding pipe spoils the appearance of the facade. To understand all the intricacies, you will have to understand the existing types of gas heaters, but first...

Determining the thermal power of the boiler

Surely you know the popular methods for calculating the thermal performance of equipment - by area or volume of heated premises. Allegedly, for housing 100 square meters take a 10 kW boiler, in Vacation home 200 sq. m – unit 20 kW.

It is better not to use these approximate methods, since specific conditions are not taken into account - the climate in the area of residence, the degree of thermal insulation of the building, and so on. We invite you to take advantage of more precise methods calculations:

According to the specific heat load per square square of living space, taking into account the location of the room and the number of window openings.
The same goes for the volume of premises.
Full calculation using the SNiP formula, taking into account the thickness and thermal insulation of external building structures.

An example of calculating heat loss by area, taking into account the location of rooms and the number of window openings

Comment. All 3 methods are described in detail in a separate manual on thermal calculations.

Knowing the heat consumption for heating the cottage, we select a gas boiler based on power as follows:

if you plan to use the unit only for heating, multiply the resulting figure by a safety factor of 1.2;
the power of a 2-circuit heat generator providing 2 water points is best selected with a margin of 1.3-1.5;
for working with a boiler indirect heating with a volume of 200-300 liters you will need a gas single-circuit boiler with one and a half performance margin (multiply by a factor of 1.5).

Let's give an example. For heating a private home with an area of 100 square meters. m is calculated to require 9 kW of energy. Minimum power a gas heater excluding DHW will be 9 x 1.2 = 10.8 kW, a double-circuit boiler - 9 x 1.3 = 11.7 kW. If you need to heat the storage tank, the unit’s performance increases to 9 x 1.5 = 13.5 kW. Next, we select the nearest higher-power model from the line of heaters - 12 and 15 kW, respectively.

Classification of gas heat generators

All hot water boilers that burn natural gas or liquefied propane-butane mixture (LPG) are divided into groups according to the following criteria:

combustion chamber design - open or sealed (closed);
installation method – wall, parapet or floor;
number of heating circuits – 1 or 2 (heating + DHW);
energy resources used – only gas fuel or its combination with wood and electricity (so-called combi boilers).

Note. All types of heat generators are initially configured to burn methane, the main gas. To do this, it is enough to replace the fuel jets and adjust the pressure in front of the main burner.

Examples of combined heat generators: electric-gas apparatus (left) and dual-fuel coal-gas boiler (right)

The correct choice of a gas boiler is made according to 3 main criteria - the principle of operation (that is, the type of chamber), the installation option and the ability to additionally heat required quantity water. Other factors are not so important, but in certain conditions they can play a decisive role:

design and material of the heat exchanger – steel, cast iron, copper;
ignition method - automatic electronic or manual from a piezoelectric element;
dependence of the heater operation on electricity;
the ability to smoothly or stepwise regulate the power of a gas burner device (modulation);
and so on.

An important nuance. Absolutely all modifications of gas water heating devices, commercially available, are equipped with automatic safety. According to requirements regulatory documents, the fuel valve of any boiler must immediately stop the fuel supply in 3 cases:

In case of spontaneous extinguishing of the burner, for example, due to the flame being torn off by reverse draft.
If the gas pressure in the supply line drops below a critical level.
In the absence of natural chimney draft or failure of the blower fan (optionally, a smoke exhauster) in turbocharged versions of heaters.

Reference. In heat generators with electronic control, manufacturers provide additional levels of protection - they install temperature sensors, overheating sensors and other automatic safety devices.

Classification of gas-fired heaters according to various criteria

Gas separation heating installations into groups cannot be called clear. Example: devices with an open chamber are floor-mounted, wall-mounted and parapet-mounted, and some models operate from the mains, others are completely independent. Let's look at each group in more detail.

Differences between units based on operating principle

Boilers using natural gas as the main energy source are divided into 3 categories:

atmospheric with an open combustion chamber;
turbocharged (otherwise inflatable) with a closed firebox;
condensing - units with a sealed chamber capable of returning the latent heat of fuel combustion.

We will not consider the pros and cons of each group of heaters; we would rather list the design differences and operational parameters. In heat sources of the first category, the firebox communicates with the surrounding air, hence the name - atmospheric. Boiler features:

Explanation. Only units with an open firebox are able to function without electricity. In non-volatile models, fuel supply and safe combustion are handled (most often by EuroSIT). There is no electronic board or controller; ignition is done manually using a piezo button.

Turbocharged heat generators do not depend on chimney draft, since air is forced into a closed chamber electric fan, whose performance is regulated by the controller. Air is sucked in and exhaust gases are released through a coaxial chimney “pipe in pipe”, laid out along the shortest path, as shown in the photo.

Typically, a double-walled flue is installed horizontally with a slight slope towards the street to drain condensate.

Features and characteristics of pressurized boilers:

The firebox does not communicate with the air in the room; the ignition and combustion process are completely controlled by electronics.
The units are completed two-stage burners or modulating devices with a smooth change in performance.
The efficiency of various turbocharged vehicles lies in the range of 90...93% - a higher figure than that of naturally aspirated vehicles.
Boilers require external power supply from the house electrical network.

Compared to their atmospheric counterparts, gas heat sources with a closed chamber are more economical and well automated. The disadvantage is complete dependence on external power supply, the lights were turned off - the heating also “died”. To secure a gas turbo boiler, you need a block uninterruptible power supply or an electric generator.

Reference. In terms of price, forced-air heaters occupy a middle position between inexpensive “aspirated” and condensing units.

The design of the condensation heat generator resembles turbocharged models - the same closed chamber, fan - air blower (or smoke exhauster), double-walled chimney. The device is distinguished by the design of the firebox and a cylindrical burner placed inside the heat exchanger - a coil made of of stainless steel.

How the boiler works:

In addition to dependence on electricity, the described boilers have 2 more disadvantages - too high a price and deterioration in efficiency in certain operating modes. Our expert will reveal the essence of the problem in a video:

Wall, stationary and parapet models

As you might guess, the boilers of the first group are hung on the wall, the second are placed on the floor. Parapet heaters are closer in design to floor heaters, only they are attached to the wall at a level of 70-100 cm.

The installation method is not the only difference between heating units:

All wall-mounted modifications are a miniature gas boiler room. Inside any suspended boiler there is its own circulation pump, safety group, control unit and expansion tank(except for individual copies). Therefore, a wall-mounted device always depends on the reliability of the power supply.
Heat exchangers for suspended heaters are made of copper or steel; cast iron is not used. The equipment is offered in 3 versions to choose from - turbocharged, atmospheric and condensing.
Floor-standing boilers are equipped with heat exchangers made of steel and cast iron. In Russia and the CIS countries, affordable energy-independent devices of the AOGV type are produced; among the imported ones there are models with external power supply.
90% of stationary boilers are equipped with an open chamber and connected to a conventional chimney. There are also supercharged and condensation modifications of units (usually foreign-made).
Parapet heaters are offered only in atmospheric non-volatile design. The maximum power of a gas wall-mounted boiler is small - up to 15 kW, efficiency - 86%. Heat exchanger – “black” steel.

The parapet type boiler also uses a coaxial gas inlet/outlet, and operates on natural draft without any fans

Note. The difference between the three boiler layouts, as well as the advantages and disadvantages of each option, in a detailed review.

From the point of view of the average user, the material of the heat exchanger does not play a big role. Copper radiators are effective, but expensive; cast iron is durable, but too heavy and fragile (afraid of sudden temperature changes). Stainless steel and “black” steel are a compromise option sold by manufacturers in various boilers, regardless of layout.

Types of double-circuit water heating devices

The main difference between these boilers and single-circuit versions is the ability to provide hot water to the home. The water is heated by the main burner in 4 different ways:

Bithermal and plate heat exchangers are installed on double-circuit boilers wall mounting, are rarely used in floor-standing versions. Only stationary units are equipped with storage boilers (with rare exceptions). Conventional coils made of copper tubes are used in non-volatile heaters - parapet and floor.

Bithermic copper radiator shown on the right, on the left – a stainless steel plate heat exchanger

Security features and other useful features

Boilers that do not require connection to the house electrical network, are equipped with mechanical gas automation that meets the minimum safety requirements and turns off the fuel supply in the event of an emergency (listed above). What is important: after the mechanical valve of the EuroSIT type is triggered, the user must restart manually.

Floor-standing boiler "Aton" with gas mechanical automation unit 710 MiniSIT

In heat generators with automatic ignition and electronic control, the system works differently:

In any emergency (the gas is turned off, the draft is lost, the flame goes out), the valve shuts off the fuel.
After a few seconds, the controller commands the valve to open the gas, and the ignition module to send a spark to the electrodes. That is, the boiler tends to start on its own, the maximum number of attempts is 4.
If after 3-4 ignitions the accident repeats, the unit goes into error - it turns on the red indicator or shows a code on the display. Further intervention by the homeowner or service technician is required.

Addition. The heater behaves in a similar way if the power supply fails. When the light turns on, the control unit makes 3-4 attempts to start. How this happens when the ionization sensor is contaminated with soot, watch the video:

We list other useful functions of modern boilers:

shutdown in case of coolant pressure drop in closed system heating up to 0.3-0.5 Bar (measured by a hydraulic sensor);
water overheating thermostats in both circuits (heating and DHW) also turn off the boiler burner;
built-in three-way valve and additional pipes for connecting an external indirect heating boiler;
possibility of connecting a room thermostat, external weather sensor and remote control management;
defrost protection – the temperature sensor will start the boiler if the coolant cools to a critical threshold of +5 °C;
fitting with valve;
modulation of the flame of a gas burner device - automatic smooth regulation of combustion intensity depending on the temperature of the supply water.

Heating control using a remote control or a programmable room thermostat

Electronic control units are capable of diagnosing emerging problems and sending the appropriate signal. If the malfunction threatens safety, the red light on the boiler lights up and the burner turns off; in other cases, the yellow indicator lights up instead of the green one. On models equipped with a display, the error code specified in the operating instructions is displayed.

So, you have determined the power of the heat source, the location of the installation mode and understood the existing types of gas heaters. All that remains is to choose the best option.

The first recommendation. According to our experts, optimal solution for all occasions - a wall-mounted turbo boiler with a coaxial flue. In terms of the cost of the equipment, including installation, the device will be cheaper than buying an “aspirated” one and building a full-fledged chimney. One condition: no problems with power supply.

Now let’s figure out which gas boiler you should choose depending on your budget and operating conditions:

For a gravity-fed water heating system, you should definitely take non-volatile option heater - floor or parapet. The latter is suitable for a small country house area 80...120 m².
For system closed type(the wiring diagram does not matter) any heater from the above will do. But it’s better to take the wall-mounted option - it’s easier and cheaper to connect the product, you don’t have to buy a safety valve, pump and expansion tank.
Connecting a wall-mounted unit with water heating and a DHW system is quite simple; piping elements and additional equipment are included in the boiler itself
Typical conditions: the smoke duct has already been built, the building has a separate combustion room, the budget is limited. Solution: wall-mounted atmospheric mini-boiler room with a minimum set of functions.
To the apartment multi-storey building It is also better to install a turbocharged suspended model, since the removal of combustion products into the ventilation ducts is strictly prohibited. Make a hole in external wall and lay a horizontal chimney to the street, maintaining distances from the windows.
A dual-circuit heater correctly selected in terms of power will serve a maximum of 2 water points. This refers to products with plate and bithermic heat exchangers; outdated copper coils are ineffective.
If the expected consumption of domestic water is high, you need to purchase geyser or a boiler plus a storage boiler. If you don’t want to bother with the piping, take the Protherm floor-standing unit of the Medved-KLZ series with a built-in capacity of 90 liters.
Floor-standing models should be purchased as a last resort, when wall-mounted models cannot be chosen - you need more power, independence from electricity, and similar situations. Stationary gas boilers are more expensive and require additional piping.

Finally, about condensing heating equipment. Now these units are not cheap, the price is not comparable with the increase in efficiency (95% versus 93% for turbocharged devices). The second negative point: the more complex the boiler installation, the more expensive its maintenance and repair. Although it must be admitted that a condensing gas boiler is the best solution for low-temperature heating systems - underfloor heating.

Choosing the best gas boiler for an apartment is not an easy task. It is even more difficult to obtain official permission from all relevant authorities to install such a heating device in a multi-storey building. However, there is a chance if all the rules of the procedure provided for by law are observed.

The main criterion for choosing any gas boiler is the correct calculation of the required power. This indicator is calculated depending on the area of the apartment, as well as the presence of additional power consumers, for example, hot water supply or a heated floor system. Also, productivity will have to be increased if your apartment has old, drafty windows and doors, and the house is poorly insulated.

Important! You should buy a gas boiler with a power reserve of 15-20%, so that on the coldest winter days the device does not work at the limit of its capabilities. Otherwise, such operation will quickly lead to wear and tear of the equipment.

When asked which gas boilers are best for an apartment, experts answer – first of all, turbocharged ones. Models with an open combustion chamber will not be allowed to be installed in an apartment in a multi-storey building by any gas service. The next selection criteria are the number of circuits and the placement method. If there is a heating problem in the apartment, then there is no hot water in it. Therefore, most residents apartment buildings they choose double-circuit models, and the modest dimensions of the housing allow them to accommodate only compact wall-mounted boilers. Since the power of units with two circuits is spent on both heating and water heating, this figure for these models usually ranges from 20 to 35 kW.

The remaining characteristics of the gas boiler: the presence of self-diagnosis, an informative display, various sensors, weather-dependent automation, etc., are selected at the discretion of the consumer. Of course, the more various functions, the safer and more comfortable it is to use the device. A modulating burner or weather-compensating automation will make the unit’s operation more economical and save your money. However, multifunctional gas boilers are much more expensive than analogues with a set of standard features.

Another important nuance in choosing a heating device is its requirements for operating conditions. If your area has low gas pressure, unstable voltage or poor-quality tap water, it is worth looking for a unit that can operate in difficult operating conditions. For example, some models already come with a filter for water purification. If there are voltage surges, you will have to purchase a voltage stabilizer.

Necessary documentation to install a gas boiler in an apartment

Before buying a gas boiler and contacting the gas service to obtain permission to install it, you should consider where the unit will be located. Not every room is suitable for installing this heating device. First of all, please note that the boiler cannot be hung in living rooms, such as a living room or bedroom. Only a bathroom, hallway or kitchen can be suitable for its placement, provided that they have good ventilation and meet a number of fire safety requirements.

If you are sure that your apartment has a suitable room for installing a gas boiler, you must collect the following documents:

Project for installing and connecting a heating device to radiators.
Technical documentation of the unit.
Permission from the gas service, fire supervision and BTI.
Coordinated chimney removal project.

Important! The first start-up of a gas boiler must be carried out by a specialist from the local gas service.

Pros and cons of installing a gas boiler in an apartment

Residents living in multi-storey buildings usually want to install autonomous heating for the following reasons:

there is no central heating in the house;
batteries do not provide a comfortable temperature or heat intermittently.

If there is a gas main line near the house, then many people choose gas heating. After all, there are many advantages of autonomous gas heating:

the ability to pay only for the fuel consumed;
you can select the most optimal heating mode;
independence from the operation of central heating systems;
allows you to receive, in addition to heat, hot water;
It is possible to connect other heating systems.

The disadvantages of gas boilers include:

difficulty in obtaining permission to install equipment;
repair costs are borne only by the owner;
significant initial investment.

Features of using the “warm floor” system

If you plan to connect a “warm floor” system to a gas boiler, then the best option would be a condensing model. They use two heat sources: coolant and condensing steam droplets on the boiler circuits. Thus, the efficiency of the unit increases to 96-99%, and fuel consumption is reduced. Although such a device is more expensive than its conventional counterpart, during operation the condensing boiler will quickly recoup its cost.

However, it is worth noting that the presented unit is effective only at a relatively low coolant temperature of 50-60°C. If the liquid in the circuit heats up higher, then moisture will no longer condense on the surface of the heat exchanger, and the boiler will operate with the efficiency of a conventional convection model.

The best gas boilers for apartments

Let's consider best options gas boilers, which are optimal for installation in an apartment.

BOSCH GAZ 6000 W

The best wall-mounted gas boiler for an apartment is the BOSCH GAZ 6000 W. It is equipped with two heat exchangers, a modulating burner and has models with a power of 12, 18 and 24 kW. The primary circuit is made of copper, and the secondary circuit is made of steel. The unit has a stylish appearance and a bright informative display. It is compact in size and light in weight. The main characteristics of the boiler are as follows:

Efficiency = 93.2%;
fuel consumption - 2.1-2.8 cubic meters. m/hour;
DHW productivity at t=30°C is 8.7-11.4 l/min.

The gas unit is equipped with protection systems against jamming, overheating and freezing, gas control, and a draft sensor.

Vaillant turboFIT VUW

One of the best wall-mounted double-circuit gas units for an apartment, Vaillant turboFIT VUW, has a power of 23.7 kW. It stands out for its fashionable design and modern interface. It is possible to connect external control. This model is equipped with a 3-stage circulation pump, a modulation burner, and basic protection and safety systems. The unit has the following characteristics:

Efficiency = 93.5%;
fuel consumption - 2.66 cubic meters. m/hour;
DHW productivity at t=30°C – 11.2 l/min.

An inexpensive double-circuit gas boiler for installation in an apartment, Baxi ECO Compact, has models with a power of 14.18 and 24 kW. The primary heat exchanger is made of copper, the secondary one is made of steel.

The unit is easy to operate and has a simple, clear display. It is equipped with a self-diagnosis system, valve and pump blockage protection, as well as other standard systems of modern gas boilers. The characteristics of the unit are as follows:

Efficiency = 90.5%;
fuel consumption - 1.63-2.73 cubic meters. m/hour;
DHW productivity at t=30°C is 7.5-9.8 l/min.

Baltur Tesis

The budget version of the double-circuit unit for the Baltur Tesis apartment has a power of 24 kW. It is equipped with a safe fuel combustion system. The unit has a sensor that controls water pressure, a gas pressure regulator, and anti-freeze and overheating protection systems. Its characteristics are as follows:

Efficiency = 93.2%;
fuel consumption - 2.8 cubic meters. m/hour;
DHW productivity at t=30°C – 11.5 l/min.

The NAVIEN Deluxe Coaxial double-circuit wall-mounted gas boiler has models with a power of 13, 16, 20, 24 and 30 kW. It is adapted to work in difficult domestic conditions and has a built-in water purification filter. The unit has a long service life and economical fuel consumption. Its main characteristics are as follows:

Efficiency = 91.5%;
fuel consumption - 0.75-1.7 cubic meters. m/hour;
DHW productivity at t=30°C is 11.5-17 l/min.

Protherm Cheetah 23 MTV

The 23.3 kW dual-circuit unit is equipped with a modulating burner. It has an economical operating mode, into which the unit can be switched if desired. There are also “warm floor” functions, winter/summer. You can connect a weather-compensating automation device. Boiler characteristics:

Efficiency = 93.2%;
fuel consumption - 2.73 cubic meters. m/hour;
DHW capacity at t=30°C – 11 l/min.

The Oasis BM double-circuit gas boiler with a closed combustion chamber has a power of 16 kW. It has compact dimensions and low weight. The boiler runs on natural or liquefied gas, the coolant temperature is regulated from 30 to 80 degrees, hot water - from 36 to 60 degrees. There is protection against overheating and freezing, as well as gas control. Average service life is 12 years.

The gas boiler has such specifications:

Efficiency = 92%;
fuel consumption - 1.6 cubic meters. m/hour;
DHW capacity at t=30°C – 8 l/min.

Updated: 09/16/2018 14:39:45

Expert: Boris Mendel

*Review of the best sites according to the editors. About the selection criteria. This material is subjective in nature, does not constitute an advertisement and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required.

In Russia, gas is the most affordable type of fuel. That is why owners of houses, cottages and small businesses prefer to heat their premises using a gas boiler. Old Soviet cast iron devices have been replaced by elegant and lightweight models. Foreign brands have penetrated the domestic market and are seriously competing with Russian equipment. On the one hand, the range of boilers has expanded, and on the other hand, buyers have problems with choosing suitable model. Expert recommendations will help you find gas boilers in the sea best option for your home.

How to choose a gas boiler

Number of circuits. The selection should begin by determining the number of circuits. Single-circuit models are capable of providing heat to a heating system. To heat the water, you will have to buy an additional boiler. But double-circuit boilers simultaneously heat the house, providing residents with hot water.
Installation. Based on the type of installation, there are floor-mounted and wall-mounted units. Floor-standing models boast higher power. At the same time, they are more bulky and heavy. Wall-mounted boilers look more elegant; they save space in the boiler room, which is important in cramped utility rooms.
Power. The most important parameter of a heating device is thermal power. For houses with good insulation and standard rooms(height 3 m) it is customary to determine the power indicator using a simple formula. With 1 kW of heat energy you can heat an area of 10 square meters. m. In old houses with poor thermal insulation, it is necessary to install a boiler whose power is 20-50% higher than the calculated one. A double-circuit boiler is also selected to be approximately 20% more powerful, so that heating hot water does not negatively affect the temperature of the coolant. For example, for heating a dacha with an area of 70-80 square meters. m it will be enough to buy a boiler with a thermal power of 8-12 kW. A large house or cottage with an area of more than 200 sq. m is capable of heating a device with a power range of 22-35 kW. Experts do not advise chasing overly efficient models; frequently turning the burner on and off will strain residents.
Safety. Gas equipment is considered a dangerous device for human life. Therefore, it is necessary to study the safety systems available in the boiler. The standard set of a modern gas boiler includes gas control, protection against overheating and pump blocking, autodiagnostics, and a safety valve.

Rating of the best gas boilers

Nomination	place	Name of product	price
The best inexpensive wall-mounted gas boilers	1		RUB 40,019
	2		RUB 35,402
	3		RUB 28,250
	4		RUR 32,807
The best wall-mounted gas boilers in terms of price-quality ratio	1		RUB 112,824
	2		RUB 80,749
	3		RUB 55,480
The best inexpensive floor-standing gas boilers	1		RUB 36,575
	2		20,600 ₽
	3		RUB 35,190
The best floor-standing gas boilers in terms of price-quality ratio	1		RUB 117,773
	2		136,000 RUR
	3		RUB 83,836
	4		RUB 71,215
The best floor-standing gas boilers based on the condensing principle of operation	1		RUB 163,431
	2		117,080 RUR
The best wall-mounted gas boilers based on the condensing principle of operation	1		88,099 RUR
	2		69,213 RUR

The best inexpensive wall-mounted gas boilers

The most compact and cheapest are wall-mounted boilers. The budget sector offers models for small houses and summer cottages. Experts have identified several effective heating devices.

The Baxi ECO Four 24 F gas boiler is perfectly balanced in all main parameters. It is the best option for providing heat to private homes or offices. Despite the high price, the model is in steady demand on the Russian market. With a power of 24 kW and an efficiency of 92.5%, the heating device economically consumes blue fuel, both natural gas (2.73 cubic m/h) and liquefied gas (2 kg/h). Experts gave the boiler the top spot in our rating for its comfort and safety during operation. TO heating device You can connect a heated floor; there is a connector for connecting external control.

Using a gas boiler you can heat a house with an area of more than 200 square meters. m. Users in reviews note the reliability and unpretentiousness of the device, and its attractive appearance.

Advantages

high-quality assembly;
stylish design;
unpretentiousness to gas quality;

Flaws

high price.

The Ariston CARES X 24 FF NG wall-mounted gas boiler has several important advantages. The model successfully combines reasonable price and set technical parameters. The device has high thermal power (25.8 kW), good efficiency (93.7%), economical consumption of natural (2 cubic m/h) and liquefied (1.59 kg/h) gas. The double-circuit unit has a closed combustion chamber, and the circulation pump is connected to a single-phase network. The model does not have a separate chimney. Therefore, experts gave the product second place in the rating.

Homeowners are satisfied with the simplicity and ease of use, the presence of a separate heat exchanger, and the winter-summer function. Disadvantages include large dimensions, the need to install a voltage stabilizer and a water filter.

Advantages

high efficiency;
acceptable price;
safety of use;
economical gas consumption;

Flaws

electric ignition;
turns off when water pressure is low.

The Bosch Gaz 6000 W WBN 6000-12 C double-circuit gas boiler is designed for installation in small houses with a total area of up to 100 sq. m. m. It has a small power (12 kW), while gas consumption is also economical (natural - 2.1 cubic m/h, liquefied - 1.5 kg/h). The model is capable of heating water in radiators up to 82ºС, and hot water with a maximum temperature of 60ºС flows into the bath or kitchen faucet. Of the additional options, the device is equipped only with pump blocking protection. Based on the totality of characteristics, experts put the unit in third place in the rating.

Homeowners praise the boiler for its compactness, quiet operation, and elegant appearance. Disadvantages include a shortage of spare parts and a large number of plastic parts.

Advantages

compactness;
accessible menu;
reliability and practicality;
economical gas consumption;

Flaws

difficulties with repair and maintenance.

The maximum power (32 kW) among budget wall-mounted boilers is the domestic development of Lemax PRIME-V32. The device can be purchased by owners of houses and cottages with a total area of up to 320 square meters. m. The model was developed taking into account Russian operating conditions; it is not afraid of gas pressure changes. European components are used for manufacturing, so the manufacturer managed to achieve high reliability and durability of its product. Structurally, the heating device has two circuits and a closed combustion chamber. Experts also include a separate chimney as an advantage of the boiler.

Some users regret that the device is not suitable for working with liquefied gas. The device cannot boast of functionality either. Therefore, he does not fall into the top three of the rating.

Advantages

high power;
reliability;
unpretentiousness;

Flaws

modest functionality;
does not run on liquefied gas.

The best wall-mounted gas boilers in terms of price-quality ratio

Among wall-mounted gas boilers, there are models that perfectly combine reasonable prices and high-quality manufacturing. Such devices are chosen by owners of houses and cottages. Here are some interesting models.

A striking representative of the new generation of gas boilers is the Buderus Logamax plus GB172-42 i. The condensing type device has the highest efficiency of 109%. Thanks to an aluminum condensing heat exchanger, the manufacturer managed to achieve a maximum power of 41.9 kW. Compact dimensions and low weight allow the unit to be mounted on a wall. A new design, a front panel made of impact-resistant glass, economical gas consumption (class A), the ability to operate on liquefied gas - all these properties allowed the device to take first place in the rating.

Experts drew attention to the possibility of remote control via the Internet, which allows the equipment to fit into the concept " smart House". The only drawback is a high price.

Advantages

unique efficiency;
condensation heat exchanger;
compactness and lightness;
stylish design;

Flaws

one circuit;
high price.

The traditional convection operating principle is used in the Baxi NUVOLA-3 Comfort 240 Fi gas boiler. The device has two heating circuits, which allows not only to heat rooms, but also to heat water. The power of the unit (24.4 kW) is enough to create an optimal microclimate in a house with an area of up to 240 square meters. m. The boiler consumes 2.78 cubic meters. m/h of natural or 2.07 kg/h of liquefied gas. Experts gave the product second place for the presence of a built-in 60-liter boiler and decent functional equipment. The boiler was inferior to the winner of the rating in terms of innovation; the disadvantages include heavy weight and bulkiness.

Users note the stable operation of the boiler and the ability to connect to the smart home system. Difficulties arise with programming; there is no wi-fi module included.

Advantages

operates at low gas pressure;
availability of spare parts for sale;
quiet operation;
spacious boiler;

Flaws

complex weekly programming;
heavy weight.

Reasonable price, efficiency and reliability were the main factors for the Vaillant turboTEC pro VUW 242/5-3 gas boiler to reach third place in the rating. Many homeowners in our country have appreciated the high quality of workmanship. Reviews are mostly positive. The double-circuit design allows the boiler to be used as a heater or water heater. The model is somewhat inferior to the leaders in power (24 kW) and efficiency (91%). Therefore, the actual use of the device is possible in houses with an area of 200-220 square meters. m. The manufacturer installed 6 degrees of protection and equipped the product with electronic control.

A significant disadvantage of the boiler for users was the expensive maintenance. The good thing is that breakdowns are rare.

Advantages

reliability;
electronic control;
six-level protection;
acceptable price;

Flaws

expensive maintenance;
modest power.

The best inexpensive floor-standing gas boilers

Among floor-standing gas boilers you can find reliable and durable budget devices. Due to their high power, they can be used for heating houses with a total area of up to 200 square meters. m. Experts liked the following models.

The winner of the rating in the category of budget floor-standing boilers was the German Bosch Gaz 2500 F 25. Impeccable quality is complemented by high power (25 kW), decent efficiency (92%), and built-in automation. The model is best suited for heating a house with an area of 200-220 square meters. m. It will be convenient for users to control the operation heating device thanks to the display backlight. Natural gas is used as the main fuel; if necessary, the device can be easily configured to use liquefied gas. The manufacturer also took care of safety. Protection against overheating and freezing, auto-diagnosis will make the use of gas equipment carefree for the homeowner.

Consumers can only complain about the high consumption of natural gas (2.73 cubic meters per hour).

Advantages

workmanship;
operational safety;
built-in automation;
high power;

Flaws

increased gas consumption.

Despite its modest power (16 kW) and efficiency (90%), the Lemax Premium-16N gas boiler takes an honorable second place in the rating. A single-circuit device can create a cozy atmosphere in a small house with an area of up to 160 square meters. m. The advantage of the model, according to experts, is energy independence. This property is appreciated by residents of regions where power outages occur.

Users like the economical consumption of natural gas (1.9 cubic meters per hour), ease of operation, availability of spare parts, and low-cost maintenance. Adequate price and reliability add to the popularity of the boiler. The disadvantages include a minimum of modern functions and a rustic design.

Advantages

low price;
economical gas consumption;
simple design;
energy independence;

Flaws

lack of modern functions;
modest design.

Experts placed the Navien GA 23KN gas boiler in third place in the rating. This double-circuit model has a thermal power of 23 kW and an efficiency of 91.5%, which allows you to heat houses up to 230 square meters. m. The device runs on natural gas (consumption 2.24 cubic m/h), you can switch to liquefied gas (consumption 1.96 kg/h). The device is quite comfortable to use, it has auto-ignition, a display, a remote control, a power-on indication, a pressure gauge, a thermometer, a programmer and flame modulation. Safety is ensured by protection against overheating and freezing; all faults are detected in a timely manner thanks to autodiagnostics.

Users highlight the combination of price and quality, reliable stainless steel heat exchangers. The downside is the noise of the device and the need to use original spare parts.

Advantages

combination of price and quality;
wide functionality;
heat exchanger made of stainless steel;

Flaws

noisy work;
original spare parts required.

The best floor-standing gas boilers in terms of price-quality ratio

Floor-standing gas boilers from the middle price segment can solve more complex problems. Owners of houses with a total area of up to 300 square meters should take a closer look at them. m. Experts have identified several proven models.

The combination of high performance and economical gas consumption became the main trump cards of the Viessmann Vitogas 100-F GS1D870 gas boiler in the fight for first place in the rating. With a thermal power of 29 kW and high efficiency (92%), a single-circuit device is capable of heating a house with an area of 280 square meters. m. Thanks to its compact size, the boiler will fit into small utility rooms, and there will be no problems with installation. Experts note the German quality of equipment, high reliability and long service life.

Users like the impressive appearance of the device, economical gas consumption, and compactness. Weather-dependent automation regulates energy consumption taking into account the outside air temperature.

Advantages

high performance;
weather-compensated automation;
compactness;
economical gas consumption;

Flaws

one circuit.

The Italian gas boiler Baxi SLIM 2.300 Fi stands out with its elegant appearance. The floor-standing model has two circuits, which allows you to heat water in a 60-liter boiler. Experts note the presence of such modern design options as a closed combustion chamber and electronic control. The device can operate on both natural (consumption 3.49 cubic m/h) and liquefied gas (consumption 2.56 kg/h). The manufacturer has equipped its product with a power indicator, thermometer, display, and pressure gauge. The boiler starts using automatic ignition, and you can connect a heated floor to it.

Advantages

high power;
safe work;
rich functional content;
spacious boiler;

Flaws

high price;
heavy weight.

An interesting option for owners of small houses or summer cottages may be the Vaillant atmoVIT VK INT 164/1-5 gas boiler. Thermal power The device has a power output of 16.9 kW, which, combined with an efficiency of 91%, allows heating houses up to 150 square meters. m. Experts assessed the cost-effectiveness of the model. Natural gas consumption is 1.9 cubic meters. m/h, and liquefied fuel consumption is at 1.4 kg/h. Stylish design, low weight (82 kg) and high coolant temperature allowed the low-power device to take an honorable third place in the ranking.

Users note the small overall dimensions of the boiler, electronic system self-diagnosis and reasonable price. The disadvantage is the single-circuit design with an open combustion chamber.

Advantages

acceptable price;
self-diagnosis system;
lightness and compactness;
low fuel consumption;

Flaws

one circuit;
low power.

The Ariston UNOBLOC GPV 24 RI gas boiler attracted the attention of specialists with its low price. A 24 kW device with an efficiency of 90.2% can heat a house with an area of up to 220 square meters. m. At the same time, the heating unit consumes only 2.8 cubic meters per hour. m of natural or 2.09 kg of liquefied gas. The temperature range of the coolant is 34-82ºС. The set includes an expansion tank and a circulation pump.

The boiler did not make it into the top three ratings due to its single-circuit design, open chamber combustion and limited functionality. So the safety system is represented only by a safety valve. Some users liked the simplicity and unpretentiousness of the model, while other consumers appreciated the affordable price.

Advantages

low price;
economical gas consumption;
ease of operation;

Flaws

lacks modern features;
minimum level of security.

The best floor-standing gas boilers based on the condensing principle of operation

When gas burns, water is formed, which they have learned to use to obtain an additional portion of heat. In condensing boilers it is possible to increase the efficiency above 100%. Among the floor-standing models, the following devices attracted the attention of specialists.

The Italian gas boiler Baxi POWER HT 1.650 has a high thermal power (65 kW). Thanks to a stainless steel condensing heat exchanger, the efficiency indicator reached 107.5%. The model has a single-circuit design with a closed combustion chamber. Natural gas (consumption 7.08 cubic m/h) or liquefied gas (5.2 kg/h) can be used to heat water. The boiler is equipped with an informative display, thermometer, pressure gauge, automatic ignition, and power indicator. You can connect a heated floor to the heating device and introduce external control. The security system consists of gas control, autodiagnostics, protection against overheating and freezing.

Experts call the Baxi POWER HT 1.650 the most reliable premium boiler; it becomes the winner of the rating. The only downside is the high price.

Advantages

high power and efficiency;
rich equipment;
reliability and durability;
safe operation;

Flaws

high price.

Experts include high efficiency, low consumption of blue fuel and electricity among the advantages of the Buderus Logano plus GB102-16 gas boiler. Advanced technologies were used to create the heating device, which made it possible to increase the efficiency to a record level of 108%. Compact dimensions and low weight (52 kg) simplify the task of choosing a location for installation. Support optimal temperature The heating system is assisted by automation, which takes into account the readings of the outside temperature sensor.

Experts put the model in second position due to its low thermal power of 17 kW and more modest functional content than that of the leader in the rating. A single-circuit gas boiler at an affordable price attracts domestic users.

Advantages

lightness and compactness;
low gas consumption;
modern automation;
acceptable price;

Flaws

low power;
modest functionality.

The best wall-mounted gas boilers based on the condensing principle of operation

Wall-mounted gas boilers with a condensing principle of operation are somewhat inferior in power to floor-standing models. But they benefit from accessibility, compactness and cost-effectiveness. Here are the best products for today.

The combination of high thermal power (35 kW) and record efficiency (108.7%) allowed the Viessmann Vitodens 100-W B1HC043 wall-mounted gas boiler to become the winner of the rating. A small, lightweight model will fit into the tightest boiler room. All components of the device are accessible for maintenance, although the device is reliable and trouble-free. Environmentalists pay attention to the low level of emissions of harmful compounds in exhaust gases. Thanks to the variable fan speed, it is possible to significantly save on electricity. And gas consumption can be reduced by about 20%.

Users note the ability to adjust power over a wide range (8.8-35 kW), ease of control, and reliable operation of the device.

Advantages

high efficiency;
efficiency;
ease of maintenance;
compactness and lightness;

Flaws

not detected.

The wall-mounted gas boiler Baxi LUNA Platinum+ 1.18 successfully combines ease of control and the latest technology. The model is designed for small houses, as evidenced by the maximum thermal output (18.4 kW). The single-circuit device is equipped with a closed combustion chamber and a stainless steel heat exchanger. It can operate on both natural gas (1.84 cubic m/h) and liquefied gas (1.35 kg/h). While inferior to the rating winner in performance, the Italian boiler looks better in terms of comfort. The heating device can be controlled remotely; it is possible to connect a separate chimney, as well as a heated floor.

Homeowners appreciated the affordable price, efficiency and ease of use of a gas boiler.

Advantages

rich equipment;
safe work;
convenient control;
economical fuel consumption;

Flaws

modest performance.

Attention! This rating is subjective in nature, is not an advertisement and does not serve as a purchase guide. Before purchasing, consultation with a specialist is required.

What a large number of articles on this topic exist on the Internet and each of them is written as a carbon copy. Of course, there is a lot of benefit in this information and it will definitely help in choosing a gas boiler for your home. But at the same time, the main secrets of purchasing a boiler are not revealed there. But you're in luck. You will learn about them in this article. Therefore, less introduction and we begin to reveal the topic.

When comparing gas boilers, you will definitely be faced with the choice of floor-standing or wall version. And it's actually very difficult to tell you right choice. After all, each option has its pros and cons and each satisfies its own specific criteria. Therefore, let's divide them by importance.

Buy a wall-mounted gas boiler if:

You need more efficient work
We need all sorts of interesting operating modes
Requires compactness and minimum installation difficulties
If your house does not exceed 300 square meters

Choose a floor-standing gas boiler if:

You really big house or object
More important to you long term services (applies to cast iron boilers)
Need simplicity and stable operation
Do you want a non-volatile solution?
Are you ready to spend money on an additional chimney and other components?

Double-circuit or single-circuit boilers?

This applies more to wall-mounted models. The recommendation here will be simple. If you have a small house with one bathroom and a kitchen, then take a double-circuit boiler and use hot water from it.

If you have several bathrooms, then choose.

The main problem of double-circuit boilers is their low productivity. At the same time, such a device can provide one point of hot water. If there are several of them at once, problems may arise. For example, with a suddenly cold shower. Everyone has gone through it, everyone knows it and doesn’t want to repeat it. Therefore, it is better to install a boiler.

Boiler with the best gas consumption

When comparing gas boilers with each other, you will probably ask the seller: “what gas consumption will my 100-square-meter house have with your boiler?” The seller of brand X boilers will tell you that the consumption will be 5-6 cubic meters per day, and the seller of brand Y will give a figure of 7-8 cubic meters. You will be happy to buy the one in which the consumption will be less.

Do you know what your mistake will be? The fact is that you asked this question at all. Because not a single seller will give the correct gas consumption figure. Today, the reality is that gas consumption depends not so much on the boiler, but on the heat loss of your home. And every home will have their own!

The boiler itself performs the function of compensating for heat loss. From here, remember the main thing: when choosing a gas boiler in the same price segment from classmates, you will get similar gas consumption. Now these figures have long been equal for all brands. Therefore, you don’t have to worry too much about consumption.

Which boilers have the best efficiency?

As our practice shows, it is a rare brand that writes the truth about the efficiency of its boilers. And here's an example for you:

We have a gas boiler of the Ochag brand from the ServiceGaz plant. We study the technical characteristics and see that the efficiency of their Ochag Standard boiler is 92%:

Just good, we think, and we go to study similar boilers and come across one of the best floor-standing boilers today, Baxi Slim. We look at the efficiency and see a value of 90%.

Takes pride in the country! Our boilers are 3 times cheaper, and their productivity is also a couple of percent higher!

What is important for you to know about boiler efficiency? Wall-mounted boilers will always have higher efficiency than floor-mounted ones. It fluctuates around 92-93%. All wall-mounted boilers have similar efficiency. The ceiling was reached a long time ago and the difference is usually in hundredths of a percent.

The maximum efficiency of a floor-standing boiler is 90%. No brand has yet managed to achieve a higher figure. And this indicator is usually found only in expensive brands.

More power - more gas consumption

When choosing a gas boiler, you may often be faced with the fact that there is no suitable boiler for your area. Let’s say your house is 80 square meters, and you only have boilers from 15 kW.

An inexperienced buyer will look for boilers with a power of around 10 kW. An experienced person will buy what he likes. After all, in fact, it makes no difference with what power reserve you use a gas boiler. Your expenses will be similar.

As mentioned above, the boiler’s task is to compensate for heat loss in the house. A more powerful unit will simply do this faster. And the consumption will be comparable.

Aluminum or copper heat exchanger?

Among gas boilers, there are models with both the first and second heat exchanger. With copper it is still more common. An aggressive marketing policy convinced us that nothing could be cooler than copper. In general, this is true. But few people know that the efficiency of a boiler with an aluminum heat exchanger decreases by less than 1%. Therefore, if you come across an excellent boiler, then the heat exchanger in it is not copper, this is not a reason not to buy it.

But it is worth noting that using aluminum heat exchanger, the manufacturer is really trying to save money.

106% for condensing boilers

Sectional view of a condensing boiler

When choosing gas boilers, you may come across ones that are famous for their high efficiency. We talked about the design of these models in a separate article. Here we will tell you in what cases it is worth buying them.

It is important to understand the main thing - not one boiler can produce an efficiency higher than 100%. But manufacturers often like to write about an efficiency of 106% (the last figure can be any). Therefore, you should not pay attention to this indicator. The same principle applies here as was stated earlier - all condensing boilers have similar efficiency, higher than traditional ones, but below 100%.

condensing boiler operation diagram

You should only buy them if you use low temperature heating systems. Such as, for example, . It is at low temperature operating conditions that savings are achieved. In other modes, the behavior is the same as in traditional boilers.

The difference between an expensive wall-mounted boiler and a cheap one

In fact, for the main task - heating your room, you can easily choose the most budget wall-mounted gas boiler of brand X rather than the same brand, but from a more expensive segment. After all, their gas consumption will be absolutely the same.

Everything else is not always the necessary bells and whistles. Such as additional sound insulation, energy-efficient pump, functions, sophisticated display, etc.

Even now, in order to save money, they began to use tubes and connections made of composite materials in cheap boilers, and metal in more expensive ones. Whether this is good or bad, time will tell.

It is important to understand one thing: if you choose a boiler for the purpose of regular heating of the house, you can take even the simplest gas unit.

This is how the material turned out. Anything to add? Write about it in the comments!