Rating TOP-16 double-circuit boilers. Review and comparison of the best models

What is a double boiler? What types are there? Rating of the best double-circuit heating boilers.

Any boiler acts as a heating unit. Such aggregates There are two types - with one or two circuits.

The first only heat the room, the latter are designed not only for comfort in the cold season, but also for uninterrupted supply of hot water.

Consider the TOP of the best varieties of double-circuit boilers, as well as what to pay special attention to when choosing a device.

If you are in a hurry and want to know right away the best offers in each rating category from different online storesyou can look at the table and see actual prices on the Yandex Market service by clicking on the button in the table "find out the price" opposite the model.

Rating TOP-16 of the best double-circuit boilers

Place	Model	Price
Condensation models
#1	Protherm Lynx condensing 25/30 MKV 25 kW double-circuit
#2	Ariston ALTEAS ONE NET 24 double circuit
#3	Viessmann Vitodens 100-W B1KC033 35 kW dual circuit
Gas Models
#1	BAXI ECO-4s 24F 24 kW dual circuit
#2	Buderus Logamax U072-12K 12 kW dual circuit
#3	Vaillant turboFIT VUW 242/5-2 23.7 kW bypass
#4	Bosch Gaz 6000 W WBN 6000-18 C 18 kW dual circuit
#5
Combined models
#1	Kiturami KRM 30R 35 kW dual circuit
#2	ACV Delta Pro S 45 44.3 kW dual circuit
Solid fuel models
#1	Kiturami KF-35A 24 kW double-circuit
#2	Bourgeois-K MODERN-12-2K 21 kW double-circuit
#3	Bourgeois-K T-50A-2K 50 kW double-circuit
#4	Bourgeois-K T-75A-2K 75 kW double-circuit
Electrical Models
#1	Galan GALAX G352 15 15 kW double-circuit
#2	Savitr Premium Plus 21 21 kW double circuit
#3	Savitr Premium Plus 22 22.5 kW double circuit

What is a double-circuit heating boiler?

Keep in mind! Double-circuit models perform two basic functions - heating and hot water supply.

The peculiarity of such units is that they need to work continuously, regardless of the time of year.

The design of a double-circuit boiler is the basic single-loop option with an additional secondary heat exchanger.

Overview of the best models of double-circuit boilers

Double-circuit models have their own differences depending on the type of operation, type of fuel.

Let's look at each category in more detail.

Condensation models

The essence of the work aggregates is in a two-stage heating scheme, where the first stage is the heating of the return flow in the condensing section, the second is the preparatory process in the primary heat exchanger.

Note! Condensing models are the best option for people living in southern regions where winters are not too severe.

TOP 3 best condensing models according to customer reviews and ratings.

Protherm Lynx condensing 25/30 MKV 25 kW double-circuit

A high quality model that is assembled in Slovakia.

This option is great for large rooms.

It is easy to install, which you can do yourself.

The device has the highest security rating.

Comfortable operation complements the good impression of this model.

Main parameters:

thermal power - 25 kW;
variant of the combustion chamber - closed;
heat exchanger material - aluminum;
installation - wall;
Efficiency - 104%;
type of control - electronic;
dimensions - 390x700x280 mm;
weight - 37 kg.

Advantages

rapid heating of the room;
does not make noise during operation;
economical consumption;
attractive design;
comfortable and understandable control;
comfortable display.

Flaws

high price;
works only on natural gas, cylinders will not work;
you need to buy a filter from limescale.

Ariston ALTEAS ONE NET 24 double circuit

This model occupies a leading position in sales due to its high level of security.

Protective automation works in case of any breakdowns, malfunctions.

The stylish exterior of the unit will complement the room with any design.

Management is very convenient, even a non-technically savvy person can handle it.

Specifications:

thermal power - 2.5-22 kW;
type of combustion chamber - closed;
heat exchanger material - stainless steel;
installation - wall;
Efficiency - 97.4%;
type of control - electronic;
dimensions - 400x770x315 mm;
weight - 32.7 kg.

Advantages

stylish design;
easy control with touch screen;
availability of automatic adaptation to gas parameters;
the possibility of remote control from a smartphone;
increased security;
economy;
compact size.

Flaws

overcharge;
sometimes makes sounds;
expensive parts.

Viessmann Vitodens 100-W B1KC033 35 kW dual circuit

Multifunctional boiler with very high efficiency.

The model is designed for heating enclosed spaces with a square up to 35 square meters.

A device with a laconic design that will fit into any interior.

Has a high level of security.

Main parameters:

thermal power - 35 kW;
type of combustion chamber - closed;
heat exchanger material - stainless steel;
installation - wall;
Efficiency - 109%;
type of control - electronic;
dimensions - 400x700x350 mm;
weight - 38 kg.

Advantages

the presence of gas control;
stylish exterior;
comfortable use;
increased efficiency;
increased degree of security;
frugality.

Flaws

overcharge;
makes noise when turned on;
requires professional installation.

Gas Models

gas boilers - the most common type of heating units. Their essence lies in the fact that the heat carrier is heated by a gas burner.

It is worth noting! These models are economical and easy to use.

Rating of gas models in terms of price and quality.

BAXI ECO-4s 24F 24 kW dual circuit

Convection-type gas boiler with rich functionality and stylish exterior.

The model is equipped with a high level of security.

Despite the rather large dimensions, the unit is light in weight, which greatly facilitates installation.

A pleasant exterior will harmoniously fit into the design of any room.

Specifications:

thermal power - 9.3-24kW;
type of combustion chamber - closed;
type of control - electronic;
heat exchanger material - copper;
installation - wall;
Efficiency - 92.9%;
dimensions - 400x730x299 mm;
weight - 30 kg.

Advantages

quiet at work;
Excellent value for money and quality;
dynamically heats water;
good construction;
long maintainability;
modern exterior.

Flaws

hot water temperature changes regularly;
there is no way to adjust the power;
uneconomical.

Buderus Logamax U072-12K 12 kW dual circuit

Budget model, ideal for heating small spaces.

The maximum heating area is 120 square meters.

Despite its compact dimensions, the device produces more than 8 liters of water per minute.

Also, the unit is equipped with protection against freezing / overheating, auto-ignition.

Main parameters:

thermal power - 12 kW;
type of combustion chamber - closed;
type of control - electronic;
heat exchanger material - copper;
installation - wall;
Efficiency - 92%;
dimensions - 400x700x299 mm;
weight - 29 kg.

Advantages

ease of operation;
quiet at work;
copes well with the functions of heating and supplying hot water;
low gas consumption;
acceptable cost.

Flaws

all components must be purchased;
some consumers complain that after a year of operation, the device requires repair;
too primitive exterior.

Vaillant turboFIT VUW 242/5-2 23.7 kW bypass

An easy-to-handle model with a discreet design.

The device has a high safety index due to the presence of gas control, self-diagnosis, protection against freezing / overheating.

For maximum convenience, a thermometer and pressure gauge are included.

Main parameters:

thermal power - 9.7-23.7 kW;
type of combustion chamber - closed;
type of control - electronic;
heat exchanger material - stainless steel;
installation - wall;
Efficiency - 93.5%;
dimensions - 430x720x330 mm;
weight - 36 kg.

Advantages

increased level of security;
ease of operation;
pleasant exterior;
simple installation;
low price;
compactness.

Flaws

difficulty in setting up;
sometimes gives an error;
high cost of spare parts and repairs.

Bosch Gaz 6000 W WBN 6000-18 C 18 kW dual circuit

The best model in terms of price and quality ratio, occupies a leading position in sales.

The convection type boiler has good power.

It has many useful additional functions, such as protection against freezing, overheating, self-diagnosis, auto-ignition.

The warranty period is extended compared to analogues - it is 2 years. A feature of the model is the high productivity of hot water.

Main parameters:

thermal power - 5.4-18kW;
type of combustion chamber - closed;
type of control - electronic;
heat exchanger material - copper;
installation - wall;
Efficiency - 94%;
dimensions - 400x700x299 mm;
weight - 28 kg.

Advantages

profitability;
works quietly;
convenient management;
compactness;
multifunctionality;
high build quality.

Flaws

the primary heat exchanger can quickly burn out;
it is better if the first settings are done by a professional, it is problematic to do it on your own;
bulky body.

Combined models

Heating combined type boilers have the same working principle as others.

Reference! The only difference is that they can operate on several types of fuel.

Such models especially relevant in country houses, where there are often interruptions in electricity and gas supply. Energy and gas independence is the main advantage of combined boilers.

Kiturami KRM 30R 35 kW dual circuit

Despite its large size, this boiler is quite compact, so finding a place for it is not difficult.

The device is easy to operate, multifunctional.

Coal, firewood, diesel fuel are suitable as fuel.

The owner can choose it at his discretion.

A very comfortable option to not depend on electricity and natural gas all year round.

Specifications:

thermal power - 35 kW;
type of combustion chamber - closed;
type of control - electronic;
heat exchanger material - steel;
installation - floor;
Efficiency - 85%;
dimensions - 855x1360x700 mm;
weight - 170 kg.

Advantages

multifunctionality;
ease of management;
comes with a remote control;
high degree of security;
the presence of two separate combustion chambers - for liquid and solid fuels;
overheating protection.

Flaws

high price;
makes noise during operation;
not a very attractive design.

ACV Delta Pro S 45 44.3 kW dual circuit

Multifunctional boiler with a convenient body shape, which ensures compactness.

The heat exchanger is made of stainless steel, which provides the device with a long service life.

The boiler is easy to install.

With basic technical knowledge, the owner will be able to do it themselves.

Specifications:

thermal power - 44.3 kW;
type of combustion chamber - open;
type of control - electronic;
heat exchanger material - stainless steel;
installation - floor;
Efficiency - 89.8%;
dimensions - 540x1615x584 mm;
weight - 168 kg.

Advantages

the presence of an indicator of inclusion;
can work from diesel fuel, natural and liquefied gas;
produces up to 20 liters of hot water per minute;
pleasant exterior;
ease of operation;
ease of installation.

Flaws

high price;
expensive components;
makes sounds during operation.

Solid fuel models

Solid fuel boilers functionally also produce heat and hot water. The main feature is the work from solid fuel.

Usually this is: firewood, coal, pellets, wood chips, straw.

Need to know! A solid fuel boiler is a very convenient and practical option for country houses, where power outages and natural gas supply are often observed.

Kiturami KF-35A 24 kW double-circuit

A very powerful unit designed for heating large rooms.

The device is equipped with a self-diagnostic function, which ensures maximum safety.

Despite the high degree of protection, it requires regular human monitoring. Operates from firewood, wood briquettes.

Main parameters:

thermal power - 24 kW;
type of combustion chamber - open;
type of control - electronic;
installation - floor;
Efficiency - 85%;
dimensions - 780x1150x1300 mm;
weight - 250 kg.

Advantages

energy independence;
equipped with protection against freezing / overheating;
easy to install;
convenient to manage;
heats up the room quickly.

Flaws

makes sounds during operation;
high price;
requires constant human supervision.

Bourgeois-K MODERN-12-2K 21 kW double-circuit

Pretty compact model with an original exterior.

For work, you can choose any fuel: peat / wood briquettes, coal, firewood.

Energy independence and convenient control are the main advantages of the model.

Qualitatively heats rooms up to 100 square meters.

Main parameters:

thermal power - 21 kW;
type of combustion chamber - open;
type of control - mechanical;
installation - floor;
Efficiency - 84%;
dimensions - 400x1070x780 mm;
weight - 220 kg.

Advantages

easy control;
interesting design;
compactness;
energy independence;
budget cost.

Flaws

uneconomical model;
expensive components;
weak level of security.

Bourgeois-K T-50A-2K 50 kW double-circuit

A fairly powerful model that is great for large rooms.

You can heat and heat water using coal, firewood, coal / wood briquettes.

Additional comfort is provided by the thermometer and the manometer which are going in a set.

Even a technically inexperienced person will cope with the management.

Main parameters:

thermal power - 50 kW;
type of combustion chamber - open;
type of control - mechanical;
installation - floor;
Efficiency - 85%;
dimensions - 690x1580x1210 mm;
weight - 780 kg.

Advantages

easy control;
large square heating;
protection is provided by a safety valve;
low price;
good equipment.

Flaws

low efficiency;
bulky model;
heavy weight.

Bourgeois-K T-75A-2K 75 kW double-circuit

An ideal model for country houses with large-scale quadrature.

This option is similar to the previous boiler, it only heats larger rooms.

Works also from coal/wood briquettes, coal, wood.

Easy to operate, installation does not take much time, does not require professional skills.

Specifications:

thermal power - 75 kW;
type of combustion chamber - open;
type of control - mechanical;
installation - floor;
Efficiency - 82%;
dimensions - 820x1670x1120 mm;
weight - 900 kg.

Advantages

profitability;
ease of maintenance and management;
low cost;
heats and supplies hot water to large rooms;
good degree of protection.

Flaws

low efficiency;
heavy weight;
requires a separate room for installation.

Electrical Models

Electric heating boilers relevant in those regions where there are regular interruptions in the supply of natural gas or it is completely absent.

Important! The features of such models are: ease of installation, maximum safety, inexpensive cost.

Due to their compact size, the devices do not require a separate room / boiler room for installation.

Galan GALAX G352 15 15 kW double-circuit

The compact model with laconic design, will ideally fit into any interior.

The device allows you to heat rooms with a quadrature of up to 550 square meters.

Differs in ease and convenience in management.

Equipped with a high level of security, no special human intervention is required.

Specifications:

thermal power - 15 kW;
type of control - electronic;
installation - wall;
dimensions - 450x600x230 mm;
weight - 20 kg.

Advantages

compactness;
reliability;
low cost;
a light weight;
heats large rooms;
easy management and maintenance;
rich equipment.

Flaws

expensive spare parts and repairs;
makes noise during operation;
Difficulties arise during the first setup.

Savitr Premium Plus 21 21 kW double circuit

Excellent model with high build quality.

The convenient and clear display shows all the necessary information.

Installation does not take much time. Heats rooms quickly.

Dynamically supplies all occupants with hot water at high temperature, ensuring efficiency.

Main parameters:

thermal power - 21 kW;
type of control - electronic;
installation - wall;
dimensions - 600x690x225 mm;
weight - 28 kg.

Advantages

compactness;
profitability;
nice design;
informative display;
rich equipment;
convenient management.

Flaws

high price;
requires professional installation;
expensive parts.

Savitr Premium Plus 22 22.5 kW double circuit

An ideal model for owners of premises up to 220 square meters.

This boiler functions similarly to the previous model, only designed for slightly larger rooms.

Equipped with safety valve, air vent.

The kit includes an outdoor temperature sensor, a room thermostat.

Main parameters:

thermal power - 22.5 kW;
type of control - electronic;
installation - wall;
dimensions - 600x690x225 mm;
weight - 28 kg.

Advantages

compactness;
pleasant exterior;
easy control;
good equipment;
profitability;
gives more than 10 liters of hot water per minute;
light weight option.

Flaws

noisy at the time of work;
overpriced;
expensive parts.

Reviews

Customer Reviews

{{ reviewsOverall }} / 5 Grade (3 total valued)

Overall score

Total reviews:

Checked

{{{ review.rating_title}}}

{{{review.rating_comment | nl2br}}}

Review responses ({{review.rating_replies.length}})

This review has no replies yet.

Conclusion

A double-circuit boiler solves two problems at once - heating and hot water supply. When choosing such a model attention should be paid to these parameters:

thermal power - the higher this parameter, the larger the quadrature is heated by the device;
energy independence - in country houses with constant power outages and natural gas supply, it is better to opt for a solid fuel variety;
installation - wall-mounted boiler saves space in the house, but requires professional installation.

Useful video

From this video you will learn how a gas double-circuit boiler works:

Reviews Ratings