Rating of the best gas double-circuit wall-mounted boilers

A gas boiler is an excellent alternative to expensive centralized heating. You can use this heating method both in a private house and in an apartment. Gas boilers are considered the best option for creating your own heating.

The ability to control the heating mode on their own and determine the start and end times of the heating season attracts many people, and the constantly growing tariffs for housing and communal services only strengthen this preference.

They are economical, able to work in automatic mode and almost do not require human participation.

Double-circuit boilers are capable of simultaneously performing two functions:

Heating the heating agent for supply to the heating circuit.
Preparation of hot water for domestic needs.

Wall mounting places special demands on the design of the units. The weight of the boiler should not be too heavy so as not to overload the supporting surfaces.

Therefore, the power of the units is limited and rarely exceeds 45-50 kW. Wall-hung boilers are allowed to be installed in a kitchen or other room, but the general requirements for gas installations apply to them as well.

Rating

Buderus Logamax U072-24K

A compact, reliable boiler from a subsidiary of Bosh, which in itself characterizes the unit quite well. The design of the type, traditional for European heat engineering, is a separate heat exchanger, the primary one is made of copper, the secondary one is a stainless steel plate.

DHW heating occurs in a flow-through mode. The power of the unit allows heating an area of up to 240 m2.

The service life declared by the manufacturer is 15 years.

Federica Bugatti 24 Turbo

Italian gas boiler of convection type with closed burner.

Manufactured in accordance with European requirements for reliability, full protection against external factors, has a relatively low price. Demonstrates a fairly high DHW performance, which is positively perceived by users.

The high quality of assembly of the unit is also noted. A separate heat exchanger was used (primary copper, secondary - stainless steel plate).

Has a built-in water filter.

Oasis BM-16

Gas boiler with bithermic heat exchanger. Designed for heating up to 160 m2.

Closed combustion chamber. All modern protection systems are present - self-diagnostics, gas supply and flow control, safety valve, etc.

The manufacturer's warranty is 2 years, and the total service life is 12 years.

Bosch Gaz 6000 W WBN 6000-24 С

German gas convection boiler that provides home heating up to 240 m2 and hot water supply in continuous mode. Ideal for wall mounting - it is lightweight, compact and has an attractive appearance.

The built-in thermal disinfection system increases the boiler's capabilities and makes it more preferable for domestic use than alternatives.

The copper primary heat exchanger ensures the unit's service life up to 15 years or more.

Leberg Flamme 24 ASD

Convection wall-mounted double-circuit boiler, belonging to the economy class. Features a separate stainless steel heat exchanger. The power of the unit is 20 kW, which is optimal for rooms up to 200 m2.

The manufacturer's warranty is 2 years, there are all the necessary protection and management tools.

Lemax PRIME-V32

A representative of domestic heating technology, successfully competing with European models of gas boilers. Produced in Taganrog, Russia.

This model has a power of 32 kW, which allows you to serve premises of 290-320 m2.

Equipped with a closed combustion chamber, modulated by a burner, has electronic control. The warranty period is 2 years.

Navien DELUXE 24K

Korean double-circuit wall-mounted boiler with a closed combustion chamber and a separate heat exchanger.The power of the unit is 24 kW, which makes it possible to provide thermal energy to 240 m2 of residential or public space.

Differs in quite a good set of functions and a relatively low price. The main feature of the boiler is high DHW performance - at 25 ° C it produces 13.8 l / min.

It can be controlled from the remote control or remotely.

MORA-TOP Meteor PK24KT

Czech company that produces a wide range of heating boilers for various purposes and designs. The Meteor Plus series consists of two-circuit models with a closed combustion chamber.

The units have a good price-quality ratio and demonstrate quite satisfactory performance. There are all methods of protection from external or internal influences. The PK24KT model is capable of developing a power of 24 kW, which is optimal for rooms of 220-240 m2.

There are self-diagnostics and other means of protection against external or internal problems.

Lemax PRIME-V20

Another model from a domestic manufacturer. The boiler output is 20 kW, suitable for heating a house of 200 m2. This is a common size for a private home or cottage.

The manufacturer takes into account the peculiarities of the climate and the technological operating conditions of the equipment, which makes Lemax PRIME-V20 boilers preferable and in demand among users.

Navien ATMO 24AN

Wall-mounted double-circuit gas boiler from the Korean company Navien. Belongs to the ATMO range, consisting of units with an open combustion chamber.

Equipped with copper primary and stainless steel plate secondary heat exchangers. There is an electronic control, several degrees of protection.

The power of the unit is 24 kW, it is designed for heating 240 m2.

What parameters should you pay attention to when buying

Unit type

There are two types of boilers:

Convection... This is a common, common design where the heating medium is heated by burning gas in a burner.
Condensing... This is a relatively new, two-stage technology for heating the coolant. At first, it is slightly warmed up with the help of thermal energy released during the condensation of water vapor from the exhaust smoke. Then the coolant enters the primary heat exchanger and receives final heating. This results in significant savings in fuel consumption and increases the durability of the most loaded boiler units. At the same time, the condensation model can only work in low-temperature systems. It is calculated that the process can only take place when the difference between the internal and external temperatures is no more than 20 °. For Russia, such a ratio is impossible, only in the southernmost regions.

Power

The boiler power level is directly related to the served area. For most models, the rule is that 1 kW of power is required to heat 10 m2 of area.

Based on this rule, it is easy to find the right boiler for your home. At the same time, the power level does not affect the DHW performance so directly, although there is a certain dependence.

When choosing, it is necessary to clarify the parameters of this unit, referring to the technical characteristics from the passport of the device.

Combustion chamber type

There are two types of combustion chambers:

Open (atmospheric)... A design in which air is drawn directly from the room, and the smoke is removed by natural draft. Requires connection to a common house chimney, which limits the installation options (there is a binding to the place). In addition, natural cravings are extremely unstable and subject to external factors.
Closed (turbocharged)... Air is supplied by a fan, which simultaneously performs the function of smoke extraction. Such boilers do not need to be connected to a common chimney, using horizontal coaxial chimneys (pipe-in-pipe design) .The operation of such a boiler does not depend on external factors, it is more stable and adjustable.

Heat exchanger material

The heat exchanger of gas boilers can be made of different materials:

Stainless steel... This is the most common option, relatively inexpensive and quite effective.
Copper... Differs in high heat transfer, durability and practicality. Boilers with a copper heat exchanger are expensive. As a rule, These are models of top firms from Europe (German or Italian).
Cast iron... There are no models with a cast-iron heat exchanger among wall-mounted gas boilers. This is due to the large weight of the units, which allows only floor mounting. Such boilers have high power and performance, they are efficient and durable.

There are also secondary heat exchangers responsible for the preparation of hot water. Most of them have a plate structure and are made of stainless steel.

There are combined (bithermic) heat exchangers that combine the functions of heating the coolant and hot water supply in one unit.

They are effective, but they quickly become covered with lime deposits from the inside, which disrupts the heating mode and leads to a quick failure of the boiler.