TOP 15 best geysers for an apartment: 2021-2022 rating for reliability and quality and which model with flame modulation to choose

Only an autonomous unit can provide a constant supply of hot water to your home. At the same time, one of the best in terms of efficiency, productivity and savings is a device that runs on household gas. Let's look at what the rating of geysers looks like - the 10 most popular models, what criteria should be used to choose them, what to take into account, as well as how they are designed and on what principle they work.

Gas water heater in the house Source stroy-podskazka.ru

Rating of the TOP 15 best geysers of 2021-2022

conclusions

Gas water heaters from Vaillant, Electrolux, Zanussi, Bosch, Termaxi, Beretta, Vector and some others have proven themselves in the market, have high reliability and a solid service life. To choose the best gas water heater with automatic or piezo ignition, you need to compare the characteristics and features of different models. All water heaters presented in the rating are of high quality, but not everyone is suitable for hard water and low pressure. When analyzing prices, you need to take into account both the cost of the installation itself and the costs of its maintenance.

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.

Preparatory work

Despite the fact that each column “Selena”, “Vector”, “Bosch”, “Neva” comes with instructions indicating the settings, not all users understand them. One mistake at the beginning - and the technology does not function as it should.

Work begins with adjusting the water. If you do not do this right away, then all settings will be inaccurate. The flow should be minimal. The nominal values ​​are indicated in the documents, but they are general: 6, 10, 12 liters.

How to set the hot water regulator:

• Open the hot mixer to full power. When connecting to several intake points, only one valve can be unscrewed.
• Using the water switch, set the desired value.
• Turn on the tap.

Follow the recommendations of experts:

• Wait until the pressure in the line decreases, but the column will still turn on.
• Turn the water toggle knob to the maximum position.
• Turn the gas regulator to the minimum mark until the temperature suits you.

To finish cooking, you need to adjust the gas supply. Check the data sheet again to find out the minimum value for your model.

• Turn the toggle switch to minimum.
• Open the gas valve. In the Ariston and Electrolux models, this must be done after connecting to the network. In Oasis, Dion, Bosch, Junkers heaters - after installing batteries.
• Open the hot valve and the column will start working.

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.

Specifics of the technique

Water heating equipment operates using the energy of methane combustion. Performance often depends on the type of device. The devices are divided into 2 types based on their operating principle and design.

Cumulative

In a boiler, water accumulates in a reservoir (tank). Gas burners heat the bottom, creating heat transfer. Air is needed for the normal process. The spent oxygen leaves through a special pipe located inside the container.

Storage devices heat the entire volume of water in the tank to the temperature specified in the settings. If the temperature drops, the equipment is de-energized. The user sets the parameters once, and the equipment independently modulates the flame and controls the flow.

Sectional view of a gas storage device Source progasmarket.ru

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 you familiarize yourself with 3 models from famous brands that are in great demand in 2021-2022.

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.

Distinctive features

The purpose of the geyser is to heat water . The characteristics of the device determine how quickly and in what quantity the water can heat up. In order not to make a mistake in choosing a device, you should understand its structure.

The first columns with an open combustion chamber consist of a metal body, a gas burner with an igniter, a heat exchanger, an automatic gas valve with a combustion intensity regulator, a mechanical water unit with a safety valve, an ignition system, a diffuser for connecting the chimney, as well as pipes for supplying water and gas, located at the bottom of the structure.

A device with a closed gas combustion chamber has a similar structure, but has a number of differences:

• the classic burner has been replaced by a stepped or modulating burner, which changes the flame intensity automatically;
• air is forcedly supplied using a fan;
• the flame is ignited automatically through the electrical network or a hydrogenerator;
• after heating, the water temperature is maintained due to the presence of a special sensor connected to the controller.

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.

Types of water heaters and criteria for their comparison

All water heating devices for household needs are divided into 2 groups: storage boilers and instantaneous hot water columns. The first are a tank of a certain volume, where water is heated in various ways to a maximum of 75 ° C, after which it can be used. Flow-through heaters (aka columns) are designed to “on the fly” raise the temperature of the flow passing through the heat exchanger.

The main element of a storage water heating device is a tank with a capacity of 35...200 liters

The stores sell 3 types of water heating devices for private houses and apartments:

• electric and gas water heaters;
• storage boilers running on electricity or natural gas;
• indirect heating boilers.

Users are usually interested in which option is better - a gas water heater or an electric water heater, since these 2 types are the most popular.

The secret of popularity is quite simple. These household appliances are superior in quality to others: they are more reliable, more efficient and cheaper. Installing an electric speaker is more difficult - the device consumes a lot of power, so it is not suitable for installation in an apartment with old wiring or a low power limit.

Due to the absence of a tank, the dimensions of flow-through heaters are much smaller

A gas storage water heater for hot water also cannot be classified as a popular household appliance. The speaker is more convenient to use, and it’s easier to install. In turn, an indirect heating storage boiler is used in conjunction with another heat source - a heating boiler. These hot water tanks hold 100...300 liters, take up a lot of space and are offered in 2 versions: floor-mounted and wall-mounted.

We will compare an electric boiler and a gas water heater according to 3 criteria:

• equipment price;
• complexity of installation;
• ease of use.

But first, it doesn’t hurt to look at all the advantages and disadvantages of these water heating devices.

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 2021-2022 with a capacity 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.

What to look for when choosing a geyser?

Geysers perform their task in the form of heating running cold water by burning gas. It is supplied through a natural gas pipeline or through cylinders. To make a choice, you need to go over a number of characteristics.

It must be taken into account that such a device must provide hot water to the whole family. Power is responsible for this. Therefore, we will specifically outline three points for you that you will consider in the future when making a purchase:

• Speakers with low power start from 15 to 20 kW on average. Suitable for a small family of up to four people.
• Devices with an average power level - from 21 to 25 kW. Allows you to provide warm water to up to seven people.
• The most powerful devices are from 30 to 35 kW. These would be an ideal solution for a cottage or large house.

In this article you can find the most modern and popular models of geysers. We have distributed them according to price-quality ratio. Each model has its own characteristics and power.

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 2021-2022, 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.

The best models of gas storage water heaters for 2019 – prices and customer reviews

As promised, we provide our readers with an independent rating of the best representatives in the class as of 2022 - from budget models to De Luxe products.

Instantaneous water heater Electrolux NanoPlus 2.0

And our TOP opens with a budget geyser from the Swedish company Electrolux. This option is perfect for a small apartment, and its pleasant appearance and electronic display will perfectly complement the decor of any kitchen or bathroom.

water heater Electrolux NanoPlus 2.0

Flow-through gas boiler Zanussi Fonte Glass La Spezia

The next nominee comes from Italy. The combination of price and quality in this product is almost ideal. In addition to excellent characteristics, the model from Zanussi boasts a spectacular appearance that is ideal for the kitchen.

Zanussi Fonte Glass La Spezia

Instantaneous water heater Rinnai RW-14BF

The representative from the Land of the Rising Sun closes the top three best flow-through models. Both experts and buyers have known about the quality of their products for decades. In our case, the product is not only high-quality, but also profitable - its power is more than enough for a large family.

water heater Rinnai RW-14BF

Gas storage water heater Ariston SGA 200 (liters)

Cumulative modifications are not so widely popular due to their size and features, but several representatives still managed to get into our rating. Among them, one of the most confident positions is occupied by the gas storage water heater Ariston SGA 200. The Italian brand is able to offer a colossal volume of heated water and responsible control over the gas level during operation.

Ariston SGA 200

Storage boiler Baxi SAG3 100 (liters)

Well, the “gold” of our TOP is confidently taken... again by a company from Italian masters! Their 100-liter gas storage water heater SAG 3 will be a reliable assistant during the most severe outages by water supply services. An excellent offer for a large private house that can easily provide hot water for at least four people.

boiler Baxi SAG3

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.

What to choose - boiler or column

The first thing that worries the average user when choosing any product is the price. But an electric storage water heater and a gas water heater are completely different devices in terms of operation. This means that their cost can be compared only on one basis - the ability to provide hot water to a family of 3 people.

As an example, let’s take fairly reliable devices in the mid-price category - a flow-through heater from the NEVA brand and a 50-liter Gorenje boiler. That's what came out of it:

Notes:

1. If we take a geyser from the Gorenje brand for comparison, it will cost even less than the Neva - about 135 USD. e.
2. The table shows the electrical power of the boiler, but it is almost equal to the thermal power.

Conclusion. In terms of the price of the equipment, the hot water heater running on natural gas clearly wins.

Comparison of installation and connection complexity

This criterion plays an important role because it is associated with certain costs – financial and time. When comparing, we will not take into account the cold and hot water supply; it is present in both cases. The installation features of different water heaters are described in the comparison table:

Conclusion. Although some difficulties arise when installing a heavy and large boiler, in general it is much easier and cheaper to install and connect it than a gas water heater. If desired, you can install the storage heater yourself.

Ease of use

Having analyzed all the pros and cons of operating household water heating devices, we will collect them in one list:

1. The column heats the water immediately after opening the tap, which is very comfortable. The boiler takes time to prepare water - from 1 to 3 hours, depending on its temperature and tank volume.
2. The storage device produces a high flow rate and supplies several consumers at once. When drawing water at 2-3 points, the column does not have time to heat the water and its temperature drops.
3. A flow-through gas heater heats water indefinitely. The duration of supply from the boiler depends on its capacity.

Over the years of operation, scale accumulates in the tank and on the surface of the heating element, and the magnesium anode is destroyed

Speaking about operation, we should not forget about equipment maintenance. In this regard, a storage electric water heater is more reliable, since it only requires periodic cleaning of the tank and replacement of the anode. Gas water heaters are complex devices and not everyone can maintain and repair them.

Conclusion. It is still more convenient to use flow-through devices, provided that they have enough thermal power for all needs. Another thing is maintenance and repair; in this regard, maintaining the boiler will be cheaper.

Maintenance work on a gas-fired hot water heater should be entrusted to a specialist.

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.

Types and description

The store's assortment consists of a huge number of devices with different technical characteristics.

All models can be divided into two types:

• flow-through;
• cumulative.

Flow-through

The column is not equipped with a storage tank and serves to instantly heat up the liquid . Inside the device there is a heat exchanger with a water tube, and under it there is a gas burner. When fuel is burned, heat is generated, which heats the water and sends it through a heat exchanger.

Spent fuel accumulates in the collector and is discharged to the street.

Simple models are equipped with mechanical controls . In more expensive devices, ignition is performed automatically when the hot water tap is turned on. The water temperature is regulated by a standard gearbox or more modern electronics.

The speakers are equipped with an open combustion chamber . The exhaust gas is discharged through a conventional chimney or through a forced ventilation system. The second option is used in apartment buildings.

The devices are equipped with a security system and are therefore safe to use.

Cumulative

The devices are similar to electric boilers . The only difference is the heat source. The base is a container where hot water is stored. The device is equipped with a heat exchanger, inside which combustion products move.

The combustion process occurs in the lower part of the structure, where the burner is located . Special dividers are provided so that the gas gives off heat when moving upward.