Which three-point gas water heater to install. How to choose a geyser - the main types of devices and what to pay special attention to

Hoping for a centralized supply hot water illogical for a huge number of reasons - and the cost of services here is high, and its quality leaves much to be desired. In this case, you can choose a good geyser and receive warm water at any time of the day. Just for this purpose, this rating was compiled, based on customer reviews. The TOP describes the advantages and disadvantages of the most reliable water heaters for houses and apartments, having studied which, you can make your choice easier.

Usually, products of Chinese, Japanese and Korean companies are widely represented in the ratings. In the case of gas equipment, the leaders are European, including Russian firms. Each of them has occupied its own niche and has an excellent reputation. Here are the winners:

Ariston is a European company that manufactures equipment for space heating and supply hot water. In the assortment she has boilers and water heaters, including gas type. They are distinguished by versatility and functionality, since in most cases they allow both automatic and manual temperature control with an accuracy of 1 degree.
Baxi is another popular European company headquartered in the UK. Its products are powerful enough for effective service even in a large family. On average, their productivity is 10 liters per minute, and the power is 19 kW. Most of the equipment is for wall mounting. It comes with a 1-2 year warranty.
Bosch– this company needs no introduction, being the market leader household appliances, heating and water equipment. It attracts attention with the optimal ratio of quality and price of goods, reliable warranty service and a developed sales network. Basically, we are talking about storage water heaters with a capacity of about 17 kW. Their cost depends primarily on this parameter, and the higher it is, the more expensive the price. It produces the best, according to customer reviews, geysers.
Electrolux- Swedish concern, which occupies a leading position in the ratings of manufacturing companies gas equipment. The choice of speakers here is not very large, but the available models are worthy of attention - they are equipped with storage tanks with good thermal insulation, carefully treated to prevent corrosion, and operate in an economical mode. They are guaranteed for a period of 2-5 years, which only confirms the high quality of assembly and components. At the same time, the company's devices are affordable and their purchase does not put a big burden on the budget.
Neva Lux– compared to other manufacturers in the ranking, this is a relatively new company formed as a result of the renewal of Neva. Under this brand, geysers from the premium category are sold. They are manufactured in Russia, at the Armavir Gas Equipment Plant. Products are shipped throughout the country and are easy to find in stores.

To find detailed descriptions products, as well as familiarize yourself with the policies of companies on their official websites.

Rating of the best geysers

The compilation of this TOP became possible as a result of a careful selection of applicants, as a result of comparing their characteristics and a careful analysis of customer reviews.

Here are the parameters we paid attention to:

The quality of materials and assembly;
Weight and dimensions;
Easy to install;
Demanding for maintenance;
Noiselessness of work;
Water heating rate;
Operational safety;
Functionality - the presence of a display, a thermometer, etc .;
Ignition method - manual, electric or piezo ignition;
The pressure range at which the equipment operates;
Support for multiple draw points;
Mounting method - floor or wall.

The key parameters in the selection of the best gas water heaters were the reviews of specialists, the power of work and the amount of water that the equipment is capable of heating per minute.

Which is better - storage or instantaneous water heater

The storage water heater is a boiler in which a a heating element and a thermos tank holding warm water. In the flow version, there is no such capacity, it becomes warm during the operation of the column.

Here is a table comparing the two types of models:

Type	pros	Minuses
flowing	Low prices	Not the best way for large houses and apartments
	Light weight	When used simultaneously in different rooms water temperature may drop
	Easy Installation	Doesn't work well with three or more water outlets
	Easy Maintenance
	Wide range of
Cumulative	Unpretentiousness to gas pressure	At the end of the water, the force of the jet becomes less
	Undemanding to the mains voltage	High price
	Efficient operation even with minimal tap pressure	Demanding for maintenance
	No need to wait for water to heat up	Big weight

Thus, in small families it is quite possible to use an instantaneous water heater, and in a spacious house you can no longer do without storage equipment.

The best storage water heaters

Such devices are most often designed for outdoor installation. In fact, these are ordinary boilers that only work on gas. They pre-heat water, which accumulates in a special tank. Its average volume is 150 liters. Among the best geysers in this rating are the most interesting models.

This is a good floorstanding speaker for those who spend little time at home or live in an apartment alone. Its power is not very large, 8.65 kW, so the water does not warm up quickly, but with high quality. The presence of a built-in thermometer allows you to control this process, although the device quite successfully copes with this on its own. The stainless steel body ensures a long service life. The Ariston SGA 200 model is adapted to work in low pressure conditions and consumes gas economically, which is the key point in its choice.

Advantages:

Capacious water tank for 200 l;
Heats water well
Wide operating temperature range, up to +75 degrees;
Does not require matches for ignition;
Does not need to be connected to the mains;
Reduced by 15-20% heat loss due to good thermal insulation.

Disadvantages:

Considerable in size, it takes up space, which is especially felt in small rooms.

In the TOP of gas water heaters, this water heater has the best safety record. When the maximum allowable pressure of 8 bar is exceeded, the safety valve immediately activates, which eliminates the explosion and leakage of gas into the room. The reviews note a small amount of scale on the heat exchanger, compared to other models, and constantly the same water temperature, regardless of the power and inlet pressure. Its use is comfortable due to the almost complete noiselessness.

Advantages:

Anti-corrosion treatment of steel water storage tank;
Possibility of work from liquefied gas;
Independence from the power grid;
Can be installed both on the floor and on the wall;
Automatic piezo ignition;
Environmental friendliness of materials used for thermal insulation;
Can supply hot water to both bathroom and kitchen at the same time;
Weight in 40 kg.

Disadvantages:

The power is less than that of similarly priced models - 4.5 kW;
Not the most voluminous tank - 100 liters.

The best instantaneous water heaters

As the name of the category implies, these models of geysers heat water directly at the moment it is supplied to the tap. Due to this, they are cheaper than storage heaters and their choice on the market is much wider. In the category of the best gas water heaters, we present 4 models of flow type.

The column is included in the rating due to its convenience and practicality. It is ignited at the touch of a button thanks to the piezo system. At the same time, the strength of the flame can, if necessary, be adjusted, depending on the flow of water. This allows you to use it in the bathroom and in the kitchen at the same time, without losing temperature. Even when operating at a maximum power of 26.2 kW, the gas consumption does not exceed 2.1 m3 / h, and the liquefied one consumes almost half as much. This model has a guaranteed service life of 10-15 years and is unpretentious in maintenance. But just in case, the buyer is still given a one-year warranty, which can be extended to two years.

Advantages:

Heats water up to 60 degrees;
Operates at a power of 17.40 kW;
Effective at a minimum pressure of 0.10 atm;
Prepares up to 10 liters of water per minute;
Ease of Management;
Weighs 11 kg.

Disadvantages:

There may be problems with screwing the hose;
Requires rigorous maintenance once a year;
Sometimes starts to whistle after prolonged use.

The effectiveness of the equipment contributed to the receipt of the title of the best geyser by this model and its inclusion in the rating. The device is practical due to the presence of a display where all the necessary information is displayed, as well as a thermometer. With its help, it is quite easy to control the process of heating water, and it turns out that it is comfortable for bathing or washing dishes. The service life of the product is at least 10 years, which makes it possible to guarantee, in particular, reliable protection from overheating.

Advantages:

Lights up smoothly, without cotton;
Works not very noisy;
Convenient to use;
Easily fits into the design;
The presence of the option "gas control";
Heats up to 11 liters of water in 60 seconds;
Electric ignition.

Disadvantages:

Sometimes demagnetization of the water current sensor occurs;
Requires careful tuning by specialists.

This gas water heater turned out to be in the TOP due to the combination of efficient operation and high level safety during operation. It independently adjusts the temperature of water heating, but if necessary, it can be changed with an accuracy of one degree. Warm water becomes in a matter of seconds, there is no need to wait, which makes the process of using the equipment comfortable. This model has a high quality of components and assembly, but the manufacturers still provide a 2-year warranty, and it is not difficult to find service personnel for it. Its weight is just over 8 kg, which is quite a bit for a geyser.

Advantages:

Does not turn on when there is no water in the system;
Does not overheat due to special protection;
Self-diagnosis function in case of breakdown;
Electronic ignition;
Heats water at a power of 22 kW;
Automatic adjustment of flame strength;
Clear display with backlight;
Works effectively even with low water pressure;
Suitable for serving multiple locations.

Disadvantages:

Difficult installation;
After long shutdowns, increased water consumption is observed.

The geyser works accurately, turns on immediately after opening the tap, heats the water instantly, and even when operated at several points of water intake, it does not create problems with water temperature differences.

... From my own experience, I will say that the Neva Lux 5514 geyser ignites a few seconds after opening the tap and immediately starts to heat the water, which allows you not to waste it ...

Expert opinion

This is the case when compactness and functionality, good quality and low cost are combined in one model. In our ranking of the best gas water heaters, this is the most powerful, 28 kW, and at the same time inexpensive water heater. This is even more surprising when you learn about its ability to heat up to 14 liters of water per minute. Such indicators make it possible to successfully use this device even in large families. Despite such power, it functions quite quietly, turns on without problems and independently controls the gas supply throughout the entire operation.

Advantages:

Reliable cooling, which eliminates overheating and failure;
Two tapping points;
Convenient control handle;
Can work on liquefied gas;
Practical, rectangular shape;
Does not take up much space on the wall;
Weighs 12.5 kg.

Disadvantages:

Sensitive to battery voltage.

The best inexpensive geysers

Gas equipment is considered cheap, the cost of which does not exceed 4000-6000 rubles. There are not many such models on the market, but still we found one inexpensive option with good quality indicators.

It is difficult to find cheaper than this model in the rating of geysers, the manufacturer made it simple, but safe and of high quality. It adequately fulfills its main function of heating water. But at the same time, it must be controlled manually, although the device is ignited by means of electric ignition. A unique option here is the ability to switch to winter or summer operating mode, depending on the season. This allows you to save on gas consumption and pay less for it, which is always relevant.

Advantages:

Heating temperature limitation;
Works under pressure from 0.25 to 10 atm.;
Frost protected;
Easy fixing method;
Does not overheat;
Power 17.4 kW;
Water heating at a rate of 10 l / min.

Disadvantages:

Mechanical control.

Which gas column is better to buy

If you want the equipment to serve both the kitchen and the bathroom at the same time, then its productivity should be above 10 liters per minute. For work in Khrushchev, especially on the top floors, it is important that the device can operate under conditions of low gas pressure (below 0.15 bar) and low water pressure. Those who do not want to control its operation should pay attention to models with electric ignition and a flame modulation option. To minimize heat loss, products with a heat exchanger made of copper or steel allow.

Here's what you can choose, depending on your needs:

For one or two people, the Ariston SGA 200 or Baxi SAG3 100 option will be enough;
In private homes, the powerful Bosch Wr 10-2p model will be very appropriate.
In an apartment, especially in old houses, Ariston Fast Evo 11C will be relevant.
To service several points of water intake, it is best to choose the Electrolux GWH 11 PRO Inverter.
If you need a budget option, then you should pay attention to the Neva Lux 5514 or Superlux Dgi 10l geyser.

The rating included only the best gas water heaters on the market, but, as you can see, they also have certain nuances. Therefore, before buying, you must carefully read the description and characteristics of the product.

During the construction of apartments, hot water is currently supplied centrally, but for residents of Khrushchev and individual houses, the question of how to choose a gas water heater is still on the agenda. Of course, modern speakers are not those harsh units with manual control and ignition with matches that were equipped with apartments in the middle of the last century. They staged a "New Year's fireworks" when forgetful owners tried to dilute too hot water. However, current devices have enough individual nuances so that buyers approach this issue with due responsibility.

Key parameters to pay attention to

If you have already thought about which gas water heater is better to buy, pay attention to the following parameters.

The power of the unit comes in three ranges of kW: 17-19; 22-24, 28-31. The lowest power of the device is enough to supply hot water to one point in the house, such as a bathroom or kitchen. If it is necessary to serve two or more, then at least 15-20 liters per minute should pass through the column at a heating temperature of up to 35-40 degrees, and here it is already better to choose at least an average power.

The water pressure in the apartment also plays an important role, because even with a powerful unit it may not be enough for the necessary heating of water. Spending money on an expensive device with high power in this case does not make sense.

The type of ignition that a modern column has is of two types:

automatic - the device starts automatically when the water is turned on, while the spark is knocked out using a turbine or battery;
semi-automatic - the gas water heater has a piezo ignition, a spark is knocked out when a special button is pressed.

Automatic speakers are the most expensive in price, due to their increased comfort and ability to save gas, because. they do not have a standby igniter and the wick lights up only when the water is turned on. With a direct turn of the hot water tap handle, the electronics immediately ignites the igniter, or supplies a spark to the main burner. After the tap is closed, a special valve blocks the gas from entering the column from the pipe. These devices can be powered by electricity or batteries.

In columns with piezo ignition, the igniter flame must necessarily burn, otherwise the column will not work when the water is turned on. This increases the gas consumption if the wick is always on in standby mode.

The type of burner also plays an important role and can be of two types:

with constant power - the option is inconvenient in that manual adjustment is required, because. the water pressure in the system often changes, the heating temperature changes accordingly, which has to be constantly adjusted manually;
with modulating power - it is better to choose this type of device, because. it adjusts to the water pressure in the system and withstands the temperature that was originally set.

The gas pressure in the system is something that the seller in the store must definitely pay attention to. In our country, the gas pressure in the network is less than in European countries: 13 mbar versus 20, so when buying a gas column from a European manufacturer, be sure to ask what gas pressure scale is applicable to this device and whether a gas reducer is installed in it to maintain constant pressure. If the column is not adapted to Russian utility standards, then the device will not be able to gain the required power.

Regarding the removal of combustion products, the columns are divided into:

chimney - it is best to choose this best option when the corrugated sleeve of the column is displayed in the existing chimney in the house;
turbocharged - a rather risky system, when the outlet for the column breaks right into the wall, which is fraught with freezing of the outlet paths in extreme cold and you need to constantly drain the remaining water so that the heat exchanger does not break.

Safety is the most important parameter

A gas water heater is a high-risk device; various failures often occur in the gas and water supply system. Therefore, the units are equipped with various protective sensors and relays. When the question arises of how to choose a geyser, pay attention to how many of these devices are available for your favorite models. The most basic of these sensors are as follows:

ionization sensor - instantly shuts off the gas supply when the wick fades;
thermocouple (flame sensor) - serves as a safety net in case of failure of the ionization sensor, performing its functions due to failure;
overheating sensor - prevents the temperature of heated water from exceeding, protecting the heat exchanger from rupture, and also neutralizes the possibility of scale formation;
flow sensor - automatically turns on the gas column at the moment when the hot water tap opens and turns it off, respectively, when it is closed;
draft sensor - blocks the inclusion of the column in the absence of draft in the chimney, preventing the formation of carbon monoxide in the room;
temperature sensor - adjusts the power of the flame;
safety relief valve - protects the heat exchanger from damage by blocking the column when high blood pressure water in the system;
low water pressure sensor - does not start the column if the water pressure is not enough for its safe use.

The best manufacturers of geysers

In order for your purchase to be successful, before choosing a device, it is better to familiarize yourself with the list of the most popular companies producing geysers in advance.

Ariston - excellent Italian quality at the best price. The devices are characterized by high efficiency, equipped with a complex various functions. Units and parts are made of composite material, which guarantees a long service life and resistance to corrosion;
Vaillant is a quality German brand in the gas equipment market. Devices are distinguished by high productivity and unpretentiousness in work. Equipped with reliable copper heat exchanger, create a minimum of problems, have a long service life. These speakers are distinguished by a beautiful silver surface, suitable for kitchen appliances.
Junkers is a series of speakers made in Germany by the well-known Bosch company. Consistently popular in Russian market for many years, have embodied all the best qualities of this well-known brand and satisfy the requirements of the most demanding customers;
Electrolux - burners in columns of this brand are equipped with a small number of nozzles, so the operation of the device is accompanied by much less noise than in models from other manufacturers. This point may be important for some consumers and it is better for them to choose just such a column. For process safety, the Intelligent control system is used, which monitors the correct functioning of all sensors and systems.

The problem of hot water supply remains relevant not only in suburban areas, but also in the private sector of many city houses. Therefore, before the onset of cold weather, we will try to tell you how to choose a gas water heater so that you can purchase a water heater that will meet all the requirements and quality standards. To do this, consider recommendations from repairmen, customer reviews and the most important parameters, taking into account the price / quality ratio.

Models for domestic use allow you to heat from 10 to 18 liters of water per minute. Therefore, the first question that you need to ask yourself when buying this equipment is how much hot water is required for consumption? You can familiarize yourself with our rating of gas water heaters, but first consider the key characteristics.

Among the whole variety of heating equipment with a variety of performance characteristics, it is impossible to decide on the choice of a suitable model without experience. Therefore, you need to act consistently, and first deal with the classification. There are 2 types of geysers:

Flowing– differ in small sizes, lack of a tank for hot water. The design consists of the following elements:

small gas burner;
gas pipe;
collector;
overheating detector;
pipe for hot water;
thrust detector;
heat exchanger;
water regulator;
pipe outlet;
gas regulator.

If you decide to choose a flow geyser, please note that it has a small capacity. Therefore, to connect several points of the fence, you need to focus on powerful products.

Cumulative- equipped with a volumetric tank from 50 to 300 liters. Heat exchangers are more efficient, as is thermal insulation. Therefore, you do not have to constantly turn on the device to get hot water.

It makes no sense to talk about which gas water heater is better - flow or storage! First of all, the choice depends on how much water is needed, and whether there is free space. Undoubtedly, storage water heater more powerful, more convenient to use, but more expensive and requires installation in a special place. This is due to a more complex design:

large gas burner;
traction stabilizer;
divider;
thermocouple;
gas regulator;
water temperature controller;
gas wick;
protective covering;
chimney base;
water outlet pipe;
drain tap;
anode against corrosion;
cold water pipe;
protective cover;
nozzle and damper.

Therefore, let's say, a flow-through water heater is better for an apartment, but for a house it is worth considering the second option!

Performance calculation

You can find this characteristic in the technical data sheet of the equipment. In most cases, it is denoted by l / min or kW. For right choice gas column You must calculate the power by the number of mixers, that is, water intake points. Let's assume that the apartment has 2 faucets, for example, in the bathroom and in the kitchen, each of which has a capacity of 6 l / min. It follows that for it is necessary to choose a geyser with a capacity of 12 l / min. If the house has several bathrooms, accordingly, you will have to purchase a storage water heater.

Types of ignition of water heaters

Manual- to start the water heater, you need to set fire to a match and bring it to the palnik. This method of ignition is the most dangerous and inconvenient. Especially if the equipment is in a hard-to-reach place. The advantage is only in the low price;
Piezo ignition– activation is carried out by pressing a button. The electromechanical match is already integrated into the system. A less dangerous option, but still provides for user intervention in the management;
Electric ignition – perfect solution for users who plan to choose a geyser machine. At the same time, there are volatile and independent models. The first option involves connecting to the mains through a special adapter. Such models will cease to function when the power is turned off. Non-volatile models, in turn, can be equipped with a hydrogenerator that generates energy from the flow of water or batteries.

Thus, the most convenient are models with electric ignition and a hydrogenerator. They are the most expensive, but provide full automation.

Unfortunately, many users do not pay due attention to the quality of heat exchangers, relying only on brands and performance. It will be useful for you to know that these elements are today made of steel, plain and highly purified copper. The first option is distinguished by a democratic price and reliability. However, steel negatively affects the weight of the structure. Due to the excessive amount of unnecessary impurities, a raw copper heat exchanger has a limited service life. In this case, the heat is distributed unevenly. For obvious reasons, when choosing a gas boiler for a home, it is better to give preference to a heat exchanger made of purified copper. Such material has high efficiency and long service life.

water pressure

Experts also recommend paying attention to 2 parameters: the minimum pressure at which the device starts and the maximum pressure that the heat exchanger can withstand. The first characteristic is extremely important when choosing a flow geyser, since in some rooms it may not turn on at all due to a poor communication network. It is desirable that the indicator is not higher than 0.15 bar. The maximum pressure must be taken into account for the reason that plumbing systems are subject to water hammer. It is better that the characteristic indicator varies in the range of 11-12 bar. During periods of shock, the pressure rises sharply, which negatively affects the service life of the heat exchangers.

Carbon monoxide removal

According to the method of removal of combustion products, gas water heaters are classified into.

In this article you will learn:

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Frequent interruptions, shutdowns of hot water for the prevention and repair of centralized networks have become the norm today. If we add to this the seasonal increase in utility prices for hot water, it becomes quite reasonable to install water heating equipment in a private house or apartment.

In this block, we will talk about a gas water heater: which one is better for an apartment, and which one is better for a private house, we will consider the types of water heaters and the principle of its operation.

Principle of operation

The essence of the operation of a gas water heater is that gas is supplied through one pipe, which is a source of energy for heating, through the second pipe it enters cold water. Gas is supplied to the burners, due to the open fire, the water in the heat exchanger is heated to the specified temperature values.

Gas combustion is possible only in the presence of oxygen, and harmful gases are formed during the processing of raw materials. The ventilation system is responsible for these processes, which must comply with the requirements of SNiP and SanPin. All combustion products are eventually discharged through the chimney.

Kinds

To choose a safe geyser for an apartment or house, you need to deal with suitable view equipment.

With open chamber

Another name for such models is atmospheric. The essence of the operation of such a gas water heater is that air is taken from the room to burn gas. This happens naturally. The designs of such devices are simple from a technical point of view, and at a price these models are more profitable. But the security, unfortunately, is not the highest.

Cons of atmospheric geysers:

High gas consumption.
High technical requirements to installation and installation site.
Low efficiency.
Be sure to have a chimney of the appropriate configuration, length, size.
The need to organize a high-quality ventilation system.
Fire hazard.
Risk of poisoning carbon monoxide in the event of a system failure or burner self-extinguishing.

Closed camera

These models are also called turbocharged.

The principle of their operation is somewhat different:

The combustion chamber is sealed.
Air intake is carried out not from the room, but from the street.
The design has one or more fans that pump air for burning gas and contribute to a faster removal of waste products of combustion.

Advantages of turbocharged models:

Economical gas consumption and better, complete combustion. When installing a water heater with a closed combustion chamber, gas consumption is reduced by an average of ⅓ compared to atmospheric models.
High efficiency.
A high level of safety not only in terms of the removal of combustion products, but also protection against overheating of the unit.
The possibility of using a coaxial chimney.
Fully automated process of the system that does not require frequent monitoring by the user.

Minuses:

Energy dependence. Usually such geysers are still connected to the mains.
There is background noise during system operation, so you need to think carefully about the placement.

When choosing between the options described above, it is definitely better to choose gas water heater with a closed combustion chamber, especially if it is planned to be installed in an apartment.

With piezometric ignition

Models with piezometric ignition have long appeared on the market, displacing equipment with manual ignition, being simpler, more convenient, and safer to maintain.

Geysers of this type are equipped with a button on the front panel, pressing which activates the piezometric element. It gives a spark that ignites the igniter. Then everything functions in automatic mode - the gas supply valve opens, the column lights up, the water heats up and is supplied to the water intake point.

With electric ignition

These are the most reliable and safe gas water heaters of the latest generation. The ignition system works from a set of a pair of batteries, which provide the charge necessary to produce a spark. When choosing such a model, you do not even need to press any buttons - just open the tap with water, and ignition is carried out autonomously, as well as the burner stops burning.

Selection Options

After you have understood for yourself which gas water heater to choose according to the principle of operation, it's time to deal with important technical characteristics.

Power

The power indicator affects how quickly a certain volume of water will heat up. But it also affects gas consumption, and in the case of volatile models, it also affects electricity consumption. Therefore, the power should be optimal for specific conditions, and not underestimated or overestimated.

All equipment is conditionally divided into 3 categories:

low power - here the values will be from 17 to 19 kW;
medium - range from 22 to 24 kW;
high - power reaches 28-31 kW.

For a family of 3-4 people, medium power equipment is suitable. If you need to choose a gas water heater for an apartment where a family of 1-2 people lives, then 17-19 kW will be just right. The best gas water heater for a private house with a large area and with a large number of water intake points is 28-31 kW.

Type of burner

Which geyser is the most reliable, based on the type of burner? Consider both available options, their pros and cons:

Constant power. This - standard scheme, which was present in the very first models of gas water heaters and up to the development modern systems. A constant power burner is characterized by variability in water pressure, requires manual adjustment, affects a higher gas flow rate, and it is not always convenient to set the desired water temperature.
Modulating. An excellent option, since several burner operating modes are assumed here, which change automatically, based on the pressure of water and its flow from different points of water intake. The stability of pressure, temperature, the absence of additional actions for the operation of the system are the undoubted advantages of modulating models. But their price, of course, is somewhat higher.

heat exchanger

heat exchanger gas burner- one of the main working units of the system. Therefore, its device must be of high quality and reliable. The following materials are mainly used today:

Copper. Expensive water heaters are equipped with heat exchangers made of copper, which does not corrode, has a high heat transfer, and is durable. The only downside is the price and weight.
Steel. The best option according to the criteria of durability, cost, anti-corrosion properties and strength. Of course, in general, in terms of characteristics, it is somewhat inferior to copper, but for many this is not critical. The main thing is that the manufacturer you choose does not save on the manufacture of the heat exchanger and its design has a good base alloy and thick walls.

Security

Geysers have the following elements in the device:

Thrust sensor;
Temperature control sensor;
Flame sensor;
Gas sensor;
Overheat protection system.

Which gas column to choose?

There are a few more points that need to be considered in order to choose a gas water heater for an apartment or for a private house:

Place of installation and dimensions of the equipment. Classic models have dimensions of 700 * 450 * 250 mm. If you need a more compact column for installation in an apartment with a small kitchen, it is possible to choose a device with dimensions of 550 * 328 * 182 or 590 * 340 * 140 mm.
Price. More expensive equipment is supplied by companies such as Bosch, Ariston, Termex, AEG. Models from Electrolux, Neva, Gorenie are cheaper, but this does not mean that they will be bad - in the line of these manufacturers there are options that are very worthy in terms of quality, characteristics and components.

Rating of geysers

Consider an overview of the most popular geysers in different categories so that you can clearly see the difference and make your choice.

Bosch WR 10-2P

This model adequately takes its place in all ratings of gas water heaters. It is considered universal - suitable for installation in a private house in order to be able to use both natural and liquefied gas, and for a small apartment for a family of 1-3 people. The price is very attractive for the average buyer.

Characteristics:

Power - 17.4 kW.
Open combustion chamber.
Ignition based on a piezoelectric element with a push-button mechanism.
Efficiency - 10 l / min.
Gas consumption - 2.1 m3 / h.
Dimensions - 580 * 310 * 228 mm.

Of the minuses, only sensitivity to water quality and the need for almost complete disassembly of the equipment are noted if filters or a heat exchanger need to be cleaned.

Model Bosch WR 10-2P

Ariston Fast Evo 11C

This is the best gas water heater for an apartment with two or three water intake points.

Characteristics:

Power - 19 kW.
Efficiency - 11 l / min.
Electric autonomous ignition, which is powered by the mains.
Dimensions - 310x580x210 mm.
There is a display that shows the set temperature data and a code in case of an error in the system.

According to reviews, sometimes there is temperature instability for some time after turning on the equipment. Otherwise, there are no complaints.

Model Ariston Fast Evo 11C

Neva 4510-M

This gas water heater was included in the review of the best in the first place because of its very low price, at which good quality has been proven in practice.

Characteristics:

Power - 17 kW.
Productivity — 9-10 l/min.
Dimensions - 624x356x186 mm.
The combustion chamber is open.
Electric ignition.
There is a display.

Of the minuses, users note some technical shortcomings, for example, the use of sealant and rubber bands instead of threads for connecting parts. Some materials are quite flimsy, which can cause the system to leak later. But if we take into account the cost of the unit and the fact that, subject to the conditions of connection and operation, it will be enough for at least 5 years, then these shortcomings can be considered not critical.

Model Neva 4510-M

Bosch WTD 27 AME

Powerful equipment that can be safely called the best geyser for a private house with a large number of water intake points.

Characteristics:

Power - adjustable from 6 to 47 kW.
Works on natural and liquefied gas - consumption, respectively, 5.1 and 3.8 m3 / h.
The combustion chamber is closed.
Dimensions - 452 * 775 * 286 mm.
Productivity — 2,5 -27 l/min.
There is a display.
Good security and automation system.

An autonomous hot water system is extremely convenient. In many private houses and city apartments, gas water heaters are used for this. They have long and firmly entered the life of a person, fit perfectly into the interior of the kitchen, without spoiling it at all. The geyser gives the owner of the apartment a feeling of independence from the central heating supply, that is, annually held preventive work will not affect the availability of household hot water. In addition, the column helps to save a lot - the water is heated when it is really necessary, in the required quantities, it is possible to adjust the level of temperature rise.

However, previously installed devices sooner or later run out of their resources, therefore, for safety reasons and to increase the comfort of use, they have to be replaced. And many homeowners are planning the initial purchase of such a unit, deciding once and for all to get rid of dependence on the central hot water system. In both situations, the problem of choosing the optimal model will certainly arise. The diversity of the assortment presented for sale sometimes even makes this task difficult. Therefore, we hope that the rating of gas water heaters presented below will be a good help to the reader of this article.

Varieties of geysers and criteria for evaluating the chosen model

Geysers are divided according to several important criteria. You need to know this when studying the rating and choosing a device for a house or apartment.

In short, modern models of gas water heaters may differ in the following parameters and features:

By type of ignition.
According to the type of burners installed in the device.
By type of combustion chambers
The power and performance of the device.

In addition, gas water heaters are more often of a flow type, but there are expensive models that can also work in storage-boiler mode.

Types of ignition of geysers

Speaking about this characteristic, it should be noted right away that there are no special differences in the operation of the device itself when different types there will be no ignition. The difference is more about ease of use.

At the moment, there are speaker models on the market with three different types ignition - manual, piezo and electronic.

Prices for geysers

geyser

Manual ignition already very rarely used - it can only be found in older models. Such columns are ignited with a match after the gas supply valve to the wick is opened. When igniting, it is necessary to act very carefully, because if the match is not brought up in time, a flash may occur with a large accumulation of gas.

Piezo ignition. This ignition option functions on the principle of a conventional lighter. The mechanical force applied to the piezoelectric element causes electrical discharge, accompanied by the appearance of a spark, from which the gas of the ignition wick ignites. To light a column that has a piezo ignition, you just need to press a special button. After a few seconds, hot water will come out of the open tap.

Water heater with electronic ignition - the battery compartment located below is clearly visible

Electronic ignition is the most convenient. True, for the operation of models with this function, an autonomous power supply is most often required - usually these are batteries placed in a special compartment.

In different models, sparks are used different types batteries. The automation of the column reacts to the appearance of a current of water in the pipe, a glow plug fires, which kindles a fire first in the wick-igniter, and then from it the flame is transmitted to the burner of the water heater. The installed batteries are enough for uninterrupted operation of the device for a year. There are models that do not require batteries - the necessary electrical potential for the glow plug is generated by an impeller driven by a stream of water open through a column.

Varieties of burners

Manufacturers are currently installing different models water heaters various types of burners - with constant power or stepwise change, as well as modulating.

Burners with constant or stepped power, require manual adjustment of the water temperature. They are very dependent on water pressure, so often when they are installed on the upper floors of tall buildings, problems with ignition and stable combustion can occur. Typically, such units have two control handles - separately for setting the amount of water flowing through the heat exchanger, the second - for adjusting the flame level.
Modulating burners installed in modern models. They are controlled by built-in automation, which provides heating of water to a certain temperature, regardless of its initial temperature and pressure in the plumbing system (of course, within the allowable range). Special sensors monitor all input and output parameters and regulate the optimal height of the flames.

It is also convenient that if several points of hot water supply are simultaneously involved in a house or apartment, then at all its temperature will be maintained the same. For example, if someone in the household is standing in the shower, and another turns on the hot water in the kitchen, the temperature of the water in the shower will not change. Automation will instantly take into account the increased consumption and make adjustments to the operation of the device.

Geysers equipped with similar automation with modulating burners are, of course, more expensive, but this is fully justified by the comfort of their operation.

Open and closed combustion chambers

Here everything should be clear from the name.

An open chamber implies the intake of air necessary for the combustion process directly from the room. And the combustion products are diverted to the upper part of the body, where the branch pipe for connecting the chimney, which works on the principle of creating natural draft, is located. That is, the mandatory height difference between the heater and the chimney cap must be observed.

The disadvantages are obvious - it is required to take into account the additional flow of air into the room where the column is installed, the requirements for organization also increase sharply, since it is difficult to completely eliminate the ingress of combustion products into the room. In addition, creating a chimney for such a column is a rather large-scale and costly business, and in a city apartment, if a common chimney is not provided for by the house project, it is completely impossible.

But for a private house, this is a completely acceptable solution, since the existing conditions, as a rule, allow building a chimney. Such speakers usually do not have a high price, and therefore for such conditions - a very attractive option.

The closed combustion chamber does not come into contact with the atmosphere in the gas column installation room. A special coaxial chimney feeds the air necessary for combustion through one channel, and the second channel serves to remove combustion products directly to the street. That is, even in a city apartment, such a column can be installed quite well - it is enough to make an opening in the wall for the exit of a coaxial chimney. Of course, its placement is also regulated by certain rules, but usually they allow you to do this.

Geyser with a closed combustion chamber and a coaxial chimney discharged horizontally through the wall

By the way, a few words should be said about the once so popular small columns with an open combustion chamber that do not require connection to the chimney. The sad history of their operation is full of tragic cases of poisoning people with gas combustion products. Therefore, in many regions they are generally prohibited at the legislative level, even when creating all necessary conditions- forced exhaust ventilation, which some owners simply forgot or were too lazy to turn on once again.

Good advice: if such a device is still found on sale, and the sellers will assure you of its convenience and complete safety, it’s not worth the risk. Moreover, the very insignificant power and performance of such models is unlikely to give the expected increase in comfort, but there will be a lot of problems.

Power and performance of gas water heaters

These parameters of gas water heaters can be called the main ones, which you should be guided by when choosing a device, since it is on them that the overall ease of use and the full supply of family life with hot water depend.

Prices for gas water heaters "Zanussi"

gas water heaters "Zanussi"

All flow gas heaters This parameter can be divided into three groups:

Low power devices, up to 15 kW. The performance of such columns is usually limited to 8÷9 liters of heated water per minute, which is enough for only one draw-off point. A water heater with this capacity will be enough for one-room apartment, in which one or two tenants live, where the water consumption is not too high, and the likelihood of simultaneous use of hot water in several currents is extremely small.
Heaters with an average power of 16 ÷ 23 kW. These columns are capable of heating 10 ÷ 15 liters per minute, and are already able to support simultaneous consumption in two points, for example, in the kitchen and in the shower.
Columns with a high power of over 23 kW heat up 15÷20 liters of water per minute, and this is quite enough for all household needs of a large family. However, such models already have impressive dimensions and a rather high cost, that is, their purchase should be justified. Otherwise, excess power, and during their operation, will lead to a significant inefficient increase in the cost of both gas and water.

It is quite possible to calculate the required power and performance of the gas column on your own. In a standard apartment, as a rule, two or three hot water intake points are installed - in the kitchen and two or one in the bathroom. In one minute, when using the shower, about 6 liters of water go out, and about 4 from the tap in the kitchen. If you simultaneously open the taps in the bathroom and in the kitchen, then the flow will be approximately 10 liters per minute. Of course, a small margin should be added to this, that is, focus on approximately 11 ÷ 12 l / min.

(The values of 6 and 4 liters mentioned above are very arbitrary, although they are considered sufficient. But some people like to use a large pressure of water both in the shower and when washing dishes. the number of liters at the optimum, from the point of view of the owners, water pressure).

Performance is always indicated in the column passport. But do not howl about an important nuance - it is shown for a nominal rise in water temperature by a certain number of degrees. For example, 10 l/min at Δt= 25 °C.

Capacities are usually quoted with regard to a certain rise in water temperature, for example, as in this example, at 25 degrees

But another indicator is overlooked - the temperature of the water at the inlet. Agree, there can be + 5 ° С in winter, and +18 ° С in summer. And at the exit it is always desirable to have a temperature of at least +40 ° C - it is considered comfortable for washing dishes and for water procedures.

Perhaps the table below will help:

The temperature of tap water at the inlet to the column	The amount of water heated up to +40 ° C, depending on the power of the column (liters per minute)
	up to 3 kW	6 kW	8 kW	12 kW	15 kW	18 kW	21 kW	24 kW	27 kW
5 °C	1,3	2,75	3,6	5,5	6,75	8,25	9,4	10,75	12
10 °C	1,5	3,1	4,2	6,1	7,75	9,25	10,75	12,3	13.75
15 °C	1,75	3,6	4,75	7,25	9,0	10,75	12,75	14,3	16.2
18 °С	2,1	4,3	5,75	5,5	10,7	12,9	15,0	17,25	19.25

You can use a formula that takes into account the temperature difference between the inlet and outlet, the expected (or experimentally determined) flow rate and the heat capacity coefficient of water. In order not to torment the reader with independent calculations, the author of the publication “concluded” this formula in an online calculator.

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