TOP 15 best geysers for an apartment: 2020-2021 rating for reliability and quality and which model with flame modulation to choose

Rating of the TOP 15 best geysers of 2020-2021

How to choose a gas water heater?

The main criteria that must be assessed when choosing a column:

1. Power . The parameter determines the water productivity of the device. The higher the power, the more hot water can be supplied to more points.
2. Inlet pressure . Affects the ability to supply water at low pressure. Many modern models allow water supply at low flow rates.
3. Safety . The dispensers are equipped with a protection system against overheating and freezing, as well as a sensor to turn off the unit and stop the gas supply in the event of a leak.

Basic elements of an automatic control system

Devices included in the electrical circuit of the burner for automatic operation:

1. The maximum and minimum gas pressure switch has a simple design, which affects its long service life. Its principle of operation is that the gas pressure acts on the membrane, and if it deviates from the set value, it is triggered and the control valve makes the necessary adjustment. The minimum gas pressure switch protects against a drop in gas pressure to a critical value, and the maximum pressure switch carries out regulation, preventing the permissible value from being exceeded.
2. The thermostat is an indicator of reaching temperature limits. According to its signal, the combustion modes change.
3. The combustion controller is an element that combines the operation of the entire burner into a single process. The burner operation is divided into several points, which correspond to a certain position of the air damper and the fuel control valve. When a low temperature signal is received, the corresponding mechanisms open to increase combustion power. The controller's operation is based on signals from various sensors (pressure, temperature).
4. Minimum and maximum coolant pressure relays protect the heating system from excessive drops and increases in coolant pressure. Both cases are dangerous for the continued operation of the boiler, therefore, when a critical value (lower or upper) is reached, the boiler turns off, that is, the gas supply stops.
5. The boiler filling sensor is needed to provide protection against turning on the burner without the presence of coolant in the boiler.

Connecting the sensors depends on the brand of the boiler; this information can be found in the unit’s passport, and the specifics of connecting the sensors are described in detail in the attached instructions.

The connection and configuration of the automation system must be supervised by a gas service specialist. Commissioning work is also carried out in his presence with the mandatory drawing up of a certificate of suitability of the equipment for safe operation.

The best geysers for an apartment in terms of price/quality ratio

If you need to organize hot water supply in your house, it is important to choose a high-quality geyser. We have compiled a rating of 3 models based on consumer reviews, the characteristics of which live up to expectations.

Bosch WR 10-2P23

Budget equipment from a famous German manufacturer . The thermal power of the column is 17.4 kW. Due to this, 10 liters of water per minute are supplied.

In this case, the water is heated to +60 degrees, and the device itself operates at a pressure of 0.1012 atmospheres.

Stable water heating is ensured by a copper heat exchanger . Ignition is carried out manually using the built-in pierre ignition.

The device is equipped with a constantly burning pilot light.

Combustion products exit through an open chamber . A chimney with a diameter of 112.5 mm is required. To ensure safe use, the column is equipped with protective sensors.

Characteristics:

• productivity - 10 l/min;
• power - 17.40 kW;
• pressure - 0.10-12 atm.;
• dimensions - 310x580x22 mm;
• weight - 11 kg.

pros

• low price;
• compact size;
• maintainability;
• simple design.

Minuses

• Includes 1 hose with 1/2 external thread;
• The bath is slowly pouring.

Electrolux GWH 14 NanoPlus 2.0

An inexpensive unit from one of the leaders in the production of equipment . Characterized by high

efficiency - supplies up to 14 liters of water per minute.

This is an excellent indicator given the high thermal power of 28 kW and the copper heat exchanger. This indicator is enough for 2-3 points.

The outlet pressure is 0.»0-8 atmospheres.

The exhaust gas is discharged through an open chamber. To operate the column, a chimney with a diameter of 125 mm is required.

The water instantly heats up to +60 degrees.

Operational safety is due to the presence of gas control, a sensor against overheating and switching on of equipment if there is no traction. The unit is controlled mechanically. Indication of switching on and heating is provided.

Characteristics:

• productivity - 14 l/min;
• power - 28 kW;
• pressure - 0.20-8 atm.;
• dimensions - 400x650x196 mm;
• weight - 11.21 kg.

pros

• performing all functions;
• enough power for 2 points;
• turns off when overheated;
• neat switches.

Minuses

• there is a pop when turned on;
• makes noise.

Zanussi GWH 10 Fonte Turbo

A speaker in a stainless steel case from a famous Italian brand . Column

equipped with a display.

Operation is simple using mechanical switches. One of the distinctive features is the presence of indicators, thanks to which you can monitor the progress of water heating.

The product is equipped with a fan and a chimney for forced removal of smoke.

Productivity is high due to the power of 20 kW. At the outlet, the minimum pressure is 0.30 atmospheres.

The column is equipped with a fan and a chimney for forced smoke removal.

Waste products are discharged through a pipe with a diameter of 60 mm through an exhaust hood.

Characteristics:

• productivity - 10 l/min;
• power - 20 kW;
• pressure - 0.30-8 atm.;
• dimensions - 330x550x190 mm;
• weight - 10.4 kg.

pros

• automatic ignition;
• flame control;
• overheat protection system;
• display.

Minuses

• non-standard chimney size;
• noisy work.

The best geysers with an open combustion chamber

Installation of a column with an open chamber is possible if there is a chimney with natural draft. We suggest that you familiarize yourself with 3 models from famous brands that are in great demand in 2021.

Electrolux GWH 11 PRO Inverter

Flow-through geyser with natural removal of combustion products through the chimney.

Runs exclusively on natural gas.

The equipment has excellent performance of up to 11 liters per minute. Due to the power of 22 kW, the water quickly heats up to 80 degrees Celsius.

The device works if the water pressure in the system is 0.15-7.89 atmospheres.

Operation of the device is comfortable due to the presence of indicators and an electronic control system with automatic ignition.

The model is complemented by a compact display with a thermometer.

Safety of use is facilitated by the presence of a heating limiter, a sensor to turn off the device when overheated, and a self-diagnosis mode that allows timely detection of a malfunction.

Characteristics:

• productivity - 11 l/min;
• power - 22 kW;
• pressure - 0.15-7.89 atm.;
• dimensions - 330x550x190 mm;
• weight - 8.55 kg.

pros

• strength of materials;
• compactness;
• maintains temperature;
• easy wall mounting;

Minuses

• takes a long time to turn on.

Electrolux GWH 12 NanoPlus 2.0

Comfortable, simple and safe to use speaker . Presented on average

price segment.

The device has an automatic ignition, for which you need to install batteries.

The unit is easy to control thanks to a simple panel with mechanical switches.

The column is safe to use due to multi-level protection: a sensor for gas leaks and ingress of waste product into the room.

There is an indication when the water is turned on and heated . The water supply is 12 l/min thanks to a thermal power of 24 kW.

Combustion products come out using natural draft. To install the equipment, a chimney with a diameter of 110 mm is required.

Characteristics:

• productivity - 12 l/min;
• power - 24 kW;
• pressure - 0.15-8 atm.;
• dimensions - 350x610x183 mm;
• weight - 8.22 kg.

pros

• slight noise during operation;
• heats water quickly;
• economical battery consumption;
• digital temperature display.

Minuses

• Alkaline batteries are not suitable;
• weak flame when turning the switch fully.

Zanussi GWH 12 Fonte

Reliable and safe to use equipment . Made in durable steel

enamel coated body.

Only natural gas is suitable for operation. The column interacts with water at a pressure of 0.15 to 8 atmospheres.

Equipped with an open combustion chamber . The standard chimney diameter is 110 mm.

The water almost instantly heats up to 60 degrees thanks to the high thermal power of the column - 24 kW.

This makes it possible to provide a capacity of 12 liters per minute.

The model is complemented by a display with temperature indication, a gas control option and a sensor that turns off the equipment in case of overheating.

The heating efficiency is due to the presence of a copper heat exchanger.

Characteristics:

• productivity - 12 l/min;
• power - 24 kW;
• pressure - 0.15-8 atm.;
• dimensions - 350x610x190 mm;
• weight - 9 kg.

pros

• durable body;
• heats water quickly;
• enough for 3 points;
• performs its functions.

Minuses

• loud noise;
• pressure is lower than specified.

Types of automatic control systems for gas boilers

There are control systems of various brands and purposes, but they all work on similar principles, the only difference being the functionality of the system and its dependence on the electrical network.

All equipment can be combined into three main groups:

• non-volatile;
• volatile wired;
• volatile wireless systems.

The non-volatile gas boiler control system is the very first automation for heating equipment. Its operating principle is based on the physical law of expansion of a material when it is heated.

The approximate effect of this law can be considered using the example of a thermometer - when heated, mercury expands and rises up the tube attached to the scale. The reverse process occurs upon cooling.

To learn about the operating principle of combi heating boilers, click here.

For information on how to create a kitchen design with a gas heater, read the information at the link -

Also read about the Buleryan furnace-boiler, the principle of its operation and the main types.

Now imagine that a similar design is installed inside the boiler and measures the temperature of the heated coolant, only instead of mercury, another material (metal) is used.

When heated, it expands and acts on a lever mechanism that stops the gas supply. As soon as the coolant cools down, the metal contracts, acts on the lever, and the gas supply is resumed.

The energy-dependent gas boiler control system operates from the electrical network - this creates inconvenience, but in return the functionality of the equipment increases. The main element of such systems is a thermostat.

Depending on the temperature conditions, it supplies an electromagnetic pulse to the gas valve. But with the help of a special program, it becomes possible to program the temperature regime for several days, weeks or months in advance.

The non-volatile wireless gas boiler control system operates on the same principle as its wired counterpart. The difference is that the wireless automation control module is located in any place convenient for the user, and is not connected by wire to the unit.

Some systems provide for the installation of a GSM module, which provides access via a mobile device (smartphone, tablet). To get the latest data on the status of the equipment, you need to go to the application on your phone and enter the password.

Through a mobile device, it is possible not only to control, but also to control the boiler. And if an emergency occurs, the system automatically sends a notification in the form of SMS to the specified number.

Modern technologies are capable of providing full automatic control over the operation of an autonomous heating system, without creating unnecessary hassle.

Modern heating and hot water systems use various types of burners to ensure reliable and efficient operation. The choice is most often related to the characteristics of the installation location and the requirements for heating equipment.

Staged burners provide power control in 1-3 modes, which is not enough in many production processes. To increase the reliability and efficiency of boilers and heat generators, burners with automatic power control are installed.

The best geysers with a closed combustion chamber

For installation in apartments, dispensers with a closed combustion chamber with combustion products discharged through a special pipe are suitable. Such models are simple and safe to use. We included the 3 best models in the rating according to customers.

Ariston NEXT EVO SFT 11 NG EXP

Column in a steel case in silver color . Natural and

liquefied gas. With its help, up to 11 liters of water are supplied per minute. This is due to the presence of a copper heat exchanger and a thermal power of 19.58 kW.

The outlet pressure ranges from 1 to 8.50 atm.

The model is complemented by electronic ignition, built-in indicators for turning on and an integrated security system: gas control, heating temperature sensor, frost protection.

There is also auto diagnostics . The system quickly identifies the cause of the malfunction. The speaker is connected to a standard outlet using a 1.5-meter power cord.

Characteristics:

• productivity - 11 l/min;
• power - 19.58 kW;
• pressure - 1-8.5 atm.;
• dimensions - 330x550x167 mm;
• weight - 12 kg.

pros

• easy adjustment of settings;
• heating water immediately after opening the tap;
• simple maintenance.

Minuses

• makes a lot of noise;
• Sometimes it turns on with a bang.

Bosch WTD 27 AME

The equipment is designed for use in residential and commercial premises (gyms, restaurants, etc.).

Features high performance. Provides 27 liters of water per minute. A cascade connection is possible, which will increase the flow rate by 10 times.

The device consumes resources economically and operates even at low pressure (from 0.3 atmospheres).

Among the distinctive features of the speaker are its compact size, electric ignition and backlit panel.

You can control the device using the remote control. The column is supplemented with ionization flame control, protection against overheating, freezing and reverse draft.

Characteristics:

• productivity - 27 l/min;
• power - 47 kW;
• pressure - 0.30-12 atm.;
• dimensions - 452x775x259 mm;
• weight - 34 kg.

pros

• silent operation;
• enough for a large number of points;
• smooth settings;
• quick start.

Minuses

• difficulties with replacing the coarse filter.

Bosch WT 13 AM1E

Column from a reliable brand with a flow-through water heating system and a closed combustion chamber.

The spent product is removed using forced exhaust. The device has a thermometer for temperature control, working in conjunction with a flame modulator system.

The same system is responsible for fuel supply and water flow taking into account the selected temperature.

The column is connected to a standard 220 V network. It has a high productivity of 13 l/min.

The equipment power is 22.60 kW, and the outlet pressure is from 0.30 atm.

It can operate on both natural and liquefied gas. The panel displays an indication when turned on and when heating.

Characteristics:

• productivity - 12 l/min;
• power - 22.60 kW;
• pressure - 0.30-12 atm.;
• dimensions - 388x700x220 mm;
• weight - 23 kg.

pros

• durable steel body;
• simple maintenance;
• enough for 3 mixers;
• convenient control.

Minuses

• quickly becomes covered with scale;
• thin radiator.

Selection and configuration of equipment

Issues regarding the operation of the heat supply system of a private home, in contrast to centralized systems, fall entirely on its owners . And one of the problems that has to be solved is the issue of correct selection of gas equipment.

Experience in operating systems shows that a properly selected boiler should operate for at least 30% of the heating period.

The average value of boiler power consumption per square meter of a heated room ( with a ceiling height of up to 3 meters ) is about 100 watts.

Practice also shows that installing a boiler or burner with too high a power can create many problems associated with excessive gas consumption, difficulty in selecting the temperature in heated rooms and the reliability of the system.

After selecting and installing the heating system, as well as each time it is started, the following adjustments are made :

1. Complete heating of the boiler.
2. Full opening of the chimney damper.
3. Setting the burner flame to maximum power (the flame should consist of blue and yellow segments).
4. Shut off the gas supply valve when lowering to remove the yellow segment of the flame .
5. Checking the safety automation and operating modes of the boiler.

The best geysers with high performance from 10 l/min

A larger family requires a reliable water heater that can supply hot water to several points at once. We have selected the best models of geysers for 2021 with a productivity of 10 liters per minute.

Zanussi GWH 10 Fonte

This geyser is equipped with manual ignition . The design is presented in the form of a handle,

when rotated smoothly, the size of the flame increases.

To the right of it is a switch that is responsible for the volume of water supplied.

The design includes a display showing the water temperature, which turns on immediately after opening the tap.

The device allows for a flow of 10 l/min with a thermal power of 20 kW. Smoke is removed through natural ventilation.

The chimney diameter should be 110 mm . It is designed to operate only on natural gas. During the heating process, the equipment makes virtually no noise.

Characteristics:

• productivity - 10 l/min;
• power - 20 kW;
• pressure - 0.15-8 atm.;
• dimensions - 330x550x189 mm;
• weight - 8.2 kg.

pros

• price-quality ratio;
• durable steel body;
• easy installation;
• indicators.

Minuses

• thin heat exchanger wall;
• batteries need to be changed.

BAXI SIG-2 11i

This speaker is perfect for household needs . It is easy to install, just like

service. The device is equipped with various protective sensors, which eliminates damage in the absence of water and gas leakage.

The productivity is 10.9 liters per minute due to the power of 19 kW.

Combustion products exit through the open chamber.

Switching on occurs using automatic electronic ignition. The water almost instantly heats up to a temperature of +60 °C.

The unit is equipped with a modulating burner with smooth power control taking into account the volume of water consumption.

Due to the built-in gearbox, operation at a pressure of 13.5 - 20.0 atmospheres is possible.

Characteristics:

• productivity - 10.9 l/min;
• power - 19 kW;
• pressure - 0.20-10 atm.;
• dimensions - 314x592x245 mm;
• weight - 11.1 kg.

pros

• compact size;
• water temperature display;
• no temperature fluctuations;
• works with low pressure.

Minuses

• lack of anti-corrosion coating on the radiator;
• noisy work.

Zanussi GWH 12 Fonte Turbo

Convenient and safe to use equipment, powered only by main gas.

Suitable for installation in rooms without a chimney, as it is equipped with a forced exhaust system for combustion products.

The heating efficiency is due to a copper heat exchanger and a thermal power of 24 kW. 12 liters of water are supplied per minute.

To connect a closed combustion chamber there is a hole with a diameter of 60 mm.

The declared service life of the unit is at least 10 years.

This is facilitated by high-quality assembly and a set of protective sensors, including against overheating of equipment and for turning on the device in the event of a gas leak.

Characteristics:

• productivity - 12 l/min;
• power - 24 kW;
• pressure - 0.20-10 atm.;
• dimensions - 350x610x190 mm;
• weight - 10.95 kg.

pros

• heating power adjustment;
• attractive design;
• no interruptions in work;
• maintaining constant temperature.

Minuses

• the exhaust pipe is not included;
• no frost protection.

Classification of gas burners by type of temperature control

With the development of technology, new, improved methods of automatic temperature control have been developed:

1. Single-stage burners are primitive devices; their operating principle is described above. They work in the same mode.
2. Two-stage burners are devices capable of operating in two modes (40 and 100% of total power), automatically switching between them.
3. Smooth two-stage burners are burners operating in two modes (40 and 100%), but their switching between modes is carried out more smoothly, which significantly increases fuel economy and the quality of temperature maintenance
4. Modulating gas burners are the most functional devices, capable of operating in a wide power range (from 10 to 100%). Such burners are capable of maintaining temperature conditions with a deviation of only 20C from the set value. At the same time, the efficiency of fuel combustion increases and the temperature loads on the elements of the heating unit are reduced.

The copper heat exchanger is the most efficient of all, as it has good thermal conductivity and thin walls. But it does not tolerate high temperature stresses well, and therefore has a short service life. In combination with a modulating burner, its service life becomes longer.

Gas burners with the ability to change the degree of combustion are expensive, but their efficiency will quickly pay for the costs:

• saving up to 30% of fuel;
• temperature is maintained within a narrow range;
• the service life of the entire unit increases.

Read about the benefits of installing a magnesium anode for a boiler in the article.

You will find information about TGE universal multi-fuel boilers at the link -

The best geysers with flame modulation

Devices with modulation do not have such a disadvantage as a decrease in water temperature at low pressure. We offer a rating of the 3 best geysers with flame modulation for 2021, which are in particular demand.

Electrolux GWH 10 High Performance Eco

The first place in the rating was taken by a flow-through gas heater from the famous Electrolux brand.

The model is made of stainless steel and coated in silver.

Equipped with a combustion chamber with combustion products removed through natural ventilation.

To install the equipment, a chimney with a standard diameter of 110 mm is required.

Due to the thermal power of 20 kW, 10 liters of water per minute are supplied. Controlling the speaker is simple using an electronic panel.

Ignition is carried out automatically.

The display has a power and temperature indicator. The model is supplemented with gas control and a self-diagnosis system.

Characteristics:

• productivity - 10 l/min;
• power - 20 kW;
• pressure - 0.15-7.90 atm;
• dimensions - 330x550x190 mm;
• weight - 8.08 kg.

pros

• display showing water temperature;
• stainless steel burner;
• compact size;
• standard chimney.

Minuses

• noise when the tap is suddenly closed.

Bosch W 10 KB

Reliable and safe to use equipment that can instantly supply water to 2-3 points.

The speaker is suitable for home use. Safety of operation is ensured by protective sensors against overheating and gas leakage. The body is made of stainless steel.

The heat exchanger is made of copper, which ensures rapid heating of water to maximum temperature.

The column has a capacity of 10 liters per minute with a power of 17.40 kW. A mechanical switch is provided to regulate the temperature and power of water flow.

The device operates at low pressure from 0.15 bar . It is possible to use both natural and liquefied fuels.

The electronic ignition system runs on batteries.

Characteristics:

• productivity - 10 l/min;
• power - 17.40 kW;
• pressure - 0.15-12 atm.;
• dimensions - 400x850x370 mm;
• weight - 10 kg.

pros

• low price;
• simple installation;
• low pressure operation;
• high-quality assembly.

Minuses

• clicking sound when igniting;
• no automatic temperature control.

BAXI SIG-2 14i

Practical and reliable design from an Italian manufacturer . Equipped with copper

heat exchanger, due to which the water is instantly heated.

Safe to use thanks to gas control and temperature limiter.

Almost instantly heats water to 60 degrees Celsius.

The efficiency of water heating is due to the thermal power of 23.70 kW.

The column is enough to provide hot water supply to 2-3 points, since 13.6 liters of water are supplied per minute.

The water power flow adjustment is controlled by a mechanical switch. The equipment operates at a system pressure of 0.20 atmospheres.

Characteristics:

• productivity - 13.6 l/min;
• power - 23.70 kW;
• pressure - 0.20-10 atm.;
• dimensions - 363x650x245 mm;
• weight - 12.6 kg.

pros

• works with low water pressure;
• practically no noise;
• the water temperature is maintained.

Minuses

• metal crackling when turned on.

Automatic temperature control system

The most primitive system for automatic control of a set temperature with the participation of a gas burner works as follows: gas is supplied to the burner, ignited by the ignition system, and stable combustion occurs. In this case, the burner operates at full capacity.

When a certain temperature value of the coolant or air in the room is reached, the burner goes out. To maintain the set temperature, it is constantly turned on and off.

Advantages and disadvantages of geysers

The advantages of a gas water heater include::

• provision of unlimited hot water;
• large selection of equipment at budget prices;
• undemanding water pressure for most devices;
• compact dimensions allow you to install the equipment in a small apartment;
• possibility of repair if parts break;
• significant savings, since gas costs less than electricity.

There are fewer disadvantages of a gas water heater:

• for the safe operation of the equipment, it is necessary to ensure the supply of fresh air and the organization of exhaust gas removal;
• the need for regular maintenance;
• costs of design documentation for installing a column.

Operating principle of a geyser

Modern speakers have been improved, so the principle of operation is much simpler than that of outdated models. To start, you need to open the mixer tap.

Immediately after this:

• water enters the unit, opening the valve for gas supply;
• the flame ignites automatically;
• hot water is directed to the mixer;
• the waste product is discharged through a chimney or coaxial pipe;
• after closing the tap, the supply of water and fuel stops.