How to choose a gas flow column. How to choose a gas water heater - the main types of devices and what to pay special attention to. Video - How to choose the right flow-through gas water heater

Lack of centralized hot water supply is a problem only if the apartment or house does not have a good water heater. The gas water heater provides optimal comfort, it is reliable and powerful, and allows programming according to a number of parameters. But on sale there is a huge selection of equipment, in which it can be difficult to navigate. Next, you will find out what is the best and most reliable gas water heater, what parameters to pay attention to when choosing, whether it is worth paying for a brand.

How to choose

A good gas water heater is one that meets the needs of a particular buyer. Equipment can have different parameters and features - they need to be taken into account and known. There are also many manufacturers on sale - there are less and more famous ones, the price range is wide.

The main characteristics for comparing the best gas water heaters:

Power;
Burner type;
Ignition;
Security.

A practical and reliable gas water heater must be powerful enough - in this case, it will cope with the solution of current tasks, it will serve the stated period of time.

Power determines the capacity - namely, the amount of water that the device pumps in a given period of time. Conventionally, the best gas water heaters are divided into 3 groups in terms of power - medium, low-power, powerful. The total range of values is 17-31 kW. It is imperative to take into account the approximate number of water intake points in the room. If there are many of them, it would be better to choose a medium or high power unit.

The next parameter is the type of ignition. Previously, matches and lighters were used, now there are more options. Modern models assume a fully automated system (the best gas water heaters come with auto-ignition), in which batteries or turbines create a spark. To start a model with auto-ignition, you need to open a hot tap. Geysers with piezo ignition are also among the best, they represent an average semi-automatic option. In this case, you will need to press a specially designed button - and the column will start working. Fuel consumption in models with semi-automatic switching on is quite high, which is their relative disadvantage (the wick burns even after the flame has gone out).

Special attention should be paid to the type of burner. The best option is with flame modulation, since products of constant power will have to be adjusted all the time, adapting to the pressure parameters inside the system. The modulating power automatically adjusts to the water jet.

The next point is safety. In modern models, there is a three-level set of protection, which is triggered when the flame disappears, the development of a reverse type of thrust, which should not be. Hydraulic valves are provided separately to prevent overheating.

Important! There are different options for the removal of combustion products. The main ones are through the chimney or in a turbocharged way. In the first scheme, everything goes out into the street, in the second - into an equipped chimney. Both options can be implemented in the house, the chimney is not made in the apartment.

Analysis of popular models of gas water heaters: rating (TOP of the best)

Which gas water heater is better and how to choose is a question that interests every buyer of this technique. Experts draw up popularity ratings that will help you decide. They include the best gas water heaters for home, apartments from the point of view of consumers and experts. So, the most modern and reliable gas water heater - we compare, analyze, choose.

Bosch WR 10-2P

The first place in the list of recommended water heating gas appliances belongs to the Bosch WR 10-2P model. Users choose it for its compactness, stylish design. The unit will harmoniously fit into any room, including a small kitchen or utility room.

Automatic gas water heater, reliable, comes with auto-ignition. The device starts up after opening the hot water tap. There are restrictions on heating temperatures, a piezo device is provided for ignition, no batteries are required. Reliability and quality indicators are high, there are no restrictions in terms of water pressure - the water heater will work at any pressure (for Russia, an important indicator, since the pressure is often unstable). To adjust the temperature, the strength of the flame, the manufacturer has provided a set of regulators.

Pros and cons of the best gas water heater for home:

No dependence on water pressure.
Heating 10 liters per minute.
Dependence of the quality of work on the composition of the water.
The need for complete disassembly of the unit for cleaning.
Expensive service.

There is a service center not in every city; original parts are expensive.

Ariston Fast Evo 11C

Silent and safe gas water heater. The Ariston Fast Evo 11C is an alternative to the previous name in our ranking from the Bosch concern. The unit operates at a pressure of 0.1 bar. There is an integrated security system - it includes flame control, which provides protection against overheating, a draft sensor, a thermostat device. The possibility of setting the maximum temperatures taking into account the limit values (up to 65 degrees) is available.

One of the main advantages of the equipment is mains power, which is much more convenient than batteries. The heating power is 19 kW, which is enough to pass 11 liters of liquid per minute. What users complain about in this model is the incorrect display of operating temperatures by a digital display.

Neva Lux 5514

Budget gas water heaters of the line compete in build quality with premium imported counterparts. The functionality of such water heaters is limited, but the build quality and reliability are excellent.

What is in the budget household leader:

Auto ignition;
Thoughtful intuitive control system;
Independence from the water pressure indicators in the system (a hydraulic regulator is used to adjust the parameter);
Lack of body heating;
Calculation for two points of draw-off (without temperature jumps);
Gas control;
Effective cooling of the combustion chamber.

The primary settings function for a long time, everything works at the same level and does not go astray. The best gas water heaters with such a set of options are multifunctional, reliable, inexpensive, but they make a lot of noise during operation. Also, the batteries need to be replaced regularly, the heat exchanger is expensive.

Mora vega 10

Their advantages:

High-quality assembly;
Copper heat exchanger with a high level of efficiency;
Lack of scale during operation;
Large selection of security systems.

Perceptible weight - not less than 2.5 kg. Another disadvantage is that if the water supply is insufficient, the device may not connect.

Important! In Mora Top, the manufacturer has set a minimum pressure in the system of 0.2 bar, if it is less, the equipment will not start.

Zanussi GWH 10 Fonte

Best gas water heater 2019 which has a guaranteed high quality is Zanussi GWH 10 Fonte. It quickly heats up significant amounts of water for an apartment or cottage. Thanks to their attractive design, gas water heaters with automatic ignition blend harmoniously into interiors decorated in different styles.

The model is economical, low-noise, moderately consumes labor resources. Productivity is 5-10 liters per minute. The water heater works without problems even with pipes. Batteries need to be changed from time to time (- those that have an increased resource, since the installation consumes a lot).

Hyundai H-GW2-ARW-UI307

If you are thinking about which gas water heater to choose for an apartment, consider this option of TM Hyundai. This is a high-quality solution that is suitable for the Russian Federation. The weight of the device is 8.5 kg, so there are no restrictions on wall mounting. The burner turns on when the valve is opened automatically. The regulators are very smooth, allowing you to adjust any required parameters in no time. On the front there is an LCD display for displaying operating parameters.

Automatic or semi-automatic geyser - such a question is not even worth it, since only automatic models can be called the best in their class. In the case of the H-GW2-ARW-UI307, the buyer also receives an advanced 4D-guard protection with a set of functional sensors, an ionization rod.

Other features of the water heater:

Average price;
Reliability and quality;
Excellent security;
Heating of the case and noise during operation.

Since the gas instantaneous water heater runs on batteries, they will need to be replaced during operation.

Bosch WRD 13-2G

Considering the options, which model is better for a house or apartment, one cannot fail to mention the Bosch WRD 13-2G gas water heater. It is reliable and comes with a full set of fasteners.

There is an auto-ignition system, a hydrodynamic generator, which ensures the stable functioning of the system. From the front, an indicator panel is provided for controlling the heating level, detecting possible errors during the operation of the device. The power is controlled, therefore the gas consumption is relatively small. There are no batteries in the system.

The heat exchanger of a gas column with auto-ignition is made without the use of tin or lead. For the manufacture of plumbing fittings, the manufacturer uses polyamide, additionally the material is reinforced with fiberglass. There is a sensor that stops the reverse flow, a temperature limiter at the outlet to increase the safety of the device. A valve is used to change the volume of water supply.

Advantages of model gas water heaters:

Compact dimensions;
High-quality reliable assembly;
Stable operation for a long time;
Adjustment of operating temperatures with an accuracy of a degree;
Smooth heating without sudden changes;
Extinction of the burner in the event of a shutdown of the hot water tap.

Reference. The hydrogenerator whistles during operation, it can react sharply to pressure surges. At the bottom of the column is a protective casing.

Ariston Gi7S 11L FFI

Ariston Gi7S 11L FFI - the best gas water heaters for apartments and houses, they have an attractive design, excellent performance. Suitable for seasonal and permanent use, there is protection against freezing in case of operation in conditions of negative air temperatures. The design includes a fan, so there is no need to connect the column to a traditional chimney.

The case is made of stainless steel, it is compact and has a versatile design style. Gas consumption is economical, water heating to required temperatures is fast and reliable. The front panel has an LCD display and a set of buttons for fine-tuning settings. A protection system is provided to protect against high water pressure. It guarantees the safe and long-term operation of the devices. The column is equipped with overheating protection.

Advantages of the solution:

Wide range of options;
Presence of fine settings;
Convenient functional display;
Economical operation;
High build quality;
Reliability of components;
Attractive design.

The price is high, this best gas water heater is rarely installed in apartments - it is more intended for private houses. What kind of gas water heater is it - automatic or semi-automatic? Like other participants in our review, automatic machines, semi-automatic machines are now practically not used.

Vaillant MAG OE 11-0 / 0XZ C +

The Vaillant MAG OE 11-0 / 0XZ C + gas water heater with the ability to supply a set of water intake points at once is connected to a cold water supply system, a gas line and a ventilation system. The model has a piezoelectric fuse, which does not require additional service. There is a reverse draft type protection sensor, which cuts off the gas and extinguishes the flame in case of combustion products entering the room.

The power is adjustable so that you can save gas. The column is 100% compatible with various types of mixers, including designs equipped with thermostats. There is a window and a pair of swing arms.

Pros of the best gas water heater TM Vaillant:

The presence of two modes of operation - winter and summer (guarantee maximum efficiency);
Coarse filter at the inlet;
High-quality automation;
Instant heating;
Easy customization.

When turned on, warm water flows, and not boiling water, as is often the case. The shield is noisy.

Gorenje GWH 10 NNBW

Considering the question of which gas water heaters are better, one cannot fail to mention the Gorenje GWH 10 NNBW model. It is reliable and feeds up to 5 points of water intake. The maximum power of the best gas water heater is 20 kW. Warm up fast to any temperature. Electric ignition.

The copper radiator practically does not make noise during operation, it has an attractive design. Due to the presence of the gas monitoring function, gas leaks are excluded. A filter is installed at the inlet to the column - it filters out large polluting particles. The system displays the settings, which is very convenient.

Pros of the model:

Smooth settings;
Low noise;
Compact dimensions.

Reference. Sometimes, when replacing a coarse filter, users have difficulties. To carry out such work, it is better to contact the service station.

Trento lono Select 11 iD

If you are looking for which gas water heater is better to buy for an apartment, pay attention to the Trento lono Select 11 iD TM ATLANTIC model. The equipment is reliable, of high quality, well-thought-out functionality. Ignition occurs automatically after opening the tap, the gas water heater turns off as the water supply stops. Open combustion chamber, bottom piping. Ignition assumes the use of batteries - it is included in the kit, as it is used, a replacement is needed.

Advantages:

Convenient control panel;
Precise adjustments;
Wide operating temperature range;
Copper heat exchanger;
Environmental friendliness.

Installation should be done by professionals. The installation is economical, but makes noise during operation.

Bosch Therm 4000 O WR 13-2 B

Therm 4000 O WR 13-2 B is one of the best instantaneous gas water heaters. It is attached to the wall vertically; stainless steel is used for the manufacture of the heating element. Operating temperatures can be adjusted within a range of 60 degrees. The power of the installation is 7-22 kW, the water consumption is about 13 liters per minute.

Features of the geyser model:

Compact dimensions;
Excellent reliability;
Profitability in work;
The presence of a flame modulator.

The set temperature indicator will be stably maintained at a minimum gas consumption.

Trento Pilot MAX 11

An interesting model from the manufacturer. A flow-through gas unit is used to heat water in private houses and apartments. The operation of the installation is automated to the maximum - when the tap with water is opened, the main burner is ignited. Heating takes place inside the heat exchanger. Power regulation is proportional, gas consumption depends on the intensity of hot water use. The unit heats up about 11 liters per minute.

Features of the model:

Complete completeness in the basic delivery;
The ability to use more than two points of water intake;
Fast preparation of hot water;
The presence of a special gas valve.

The device does not present any difficulties in operation.

WTD 27 AME

Another great speaker from the Bosch brand. It is economical, energy efficient, guarantees uninterrupted operation of heating equipment, assumes the presence of fittings and modulation. Contact with air is constantly stable, heat distribution is even. Power high - the device heats up to 27 liters of water in one minute.

Pros and Features:

Possibility of switching to operating mode using liquefied gas;
Flame modulation option;
The presence of a forced removal ventilation device;
Ionized flame force control;
Autostart;
Overheating protection.

It is possible to combine the column with the solar system. Adjustment of settings is electronic.

Beretta Idrabagno Aqua 11

Which gas water heater is better for domestic use - imported or domestic? This is a matter of financial possibilities, but if you want to purchase high-quality, ideally working equipment, then stop at the Beretta Idrabagno Aqua 11. The gas water heater is rectangular, it is installed on the wall in a vertical position. The operation of the device assumes heating of flowing water. Productivity - about 10 liters per minute.

Features and benefits of the water heater:

Maximum operating temperature 60 degrees;
Auto ignition;
Autonomy from external power sources;
Piezo ignition;
Good build quality.

There is a stabilizer of gas pressure indicators, which guarantees maximum safety and uninterrupted operating conditions of the device. The solution is economical in operation.

How to make the best gas water heaters work as efficient as possible

We work with a low pressure and will be better for an apartment, a house, now let's see how to increase the time of their operation.

Trust the installation, connection, commissioning of installations to qualified craftsmen. The quality of service of the equipment depends on how correctly the settings were made.
The outlet temperature should not be more than 60 degrees, for some models the maximum limit is 40 degrees. If you ignore the requirement, scale will begin to collect on the membrane.
For hard water, an anti-salt system can be provided in the water heater. Its arrangement is worth a little, and many problems will be avoided.
During operation of the boiler, it is impossible to adjust the temperatures, especially by opening the cold tap. This will end with an excess of steam formed in the system, the pressure will rise to critical levels. Water leaks are likely.
The heat exchanger and igniter should be cleaned regularly to remove any blockages resulting from the build-up of combustion products.
It is important to monitor the water pressure in the system - if it is low, then install an additional pump.

Preventive measures are simple, straightforward and prevent unnecessary breakdowns. Modern gas water heaters have an impressive operational resource, they are able to work much longer than the period stated in the manual.

conclusions

Geysers 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, low pressure. When analyzing prices, it is necessary to take into account both the cost of the installation itself and the costs of its maintenance.

Do you want to always have hot water and heating in your home? Installing a gas water heater will provide you with this. Independence from utilities, self-adjustment of heating power - this is possible if the gas water heater for the apartment is correctly selected. What to look for when choosing? Is it true that the column is an explosive device? What criteria are important to consider? These and many other questions are of concern to the buyer. Get ready to get answers to each of them.

Features of choice

Remember that the main part is the heat exchanger. Better if it is made of copper. Then the efficiency of the device increases and the service life increases. When you open the faucet for hot water, with automatic ignition, heating starts immediately. If a model with a piezo ignition is selected, you will have to light the device manually by holding the piezo element button.

pay attention to ignition type... Automation is more expensive, but much more convenient in daily use.

When water is supplied in the system, the pressure rises, which opens the gas valve. Gas is supplied to the burner, a spark appears, a flame breaks out. The burner evenly heats up the heat exchanger, through the tubes of which water moves.

Burner type... For uniform heating, select a burner with multiple flutes and flame modulation. The latter function will help save on fuel consumption.

Combustion products are discharged through a chimney or coaxial duct. It is important to understand in advance which type is suitable for your apartment: turbocharged or chimney.

Find out if the building has a shared chimney. In this case, it is allowed to install equipment with an open combustion chamber, when the smoke is removed naturally - through the mine into the street.

In other cases, stop the choice on closed-type columns: there is a fan inside that forcibly removes smoke through a coaxial pipe.

The power of the device will help to understand how much hot water the heater will provide. Its performance directly depends on this figure. A rating of 10-19 kW will provide one intake point. An average performance of 20-24 kW is enough for a shower and a tap in the kitchen. The high power of the device of 27–31 kW is suitable for three points and guarantees a stable water supply, without temperature extremes.

Power is an important criterion. For an accurate determination, find out what is the pressure in the water system, gas main. If you install a productive technique at low pressure, it will not work properly.

The elements of protection will help you to choose a safe technique. Modern water heaters are equipped with sensors that detect irregularities in the operation of the device and block it until the problem is eliminated.

The flow sensor monitors the strength of the water flow that opens the fuel valve.
The combustion (ionisation) sensor detects the presence of a flame in the burner. If it is absent, the heater is turned off.
The chimney draft sensor prevents carbon monoxide from entering the room.
The heating sensor turns off the operation when the nominal temperature is exceeded.
The safety valve releases excess water at increased pressure.

How to choose the best equipment in terms of quality and reliability? Comparing the characteristics of different models in our review will help you.

Gas columns rating

Even good appliances have their pros and cons. Above, we examined the types of equipment, the principles of its operation. Now let's move on to the detailed characteristics of gas columns. In the Top-list, we will consider 5 models.

Neva 4510-M

The heater of the well-known trade mark "Neva" has a low cost. Its functionality contains everything you need for convenient use. With a power of 17.9 kW, the model has a capacity of 10 l / min. Neva 4510-M is suitable for rooms where there are problems with pressure stability, the equipment can work at 0.10 atm.

The combustion chamber is open, thanks to the electric ignition, there is no need to connect the device to the mains. Overheating protection, gas control is provided. Mechanical control with regulators.

The cost is from 6000 rubles.

Bosch W 10 KB

Another budget model. Convenient control: the mixer was opened - a hot stream was received. This is possible thanks to the battery operated electric ignition. A 17.4 kW device will provide heating of 10 liters of water per minute. The copper heat exchanger is highly efficient.

The device also runs on liquefied gas in a cylinder. It has 12 nozzles for uniform heating of the radiator. It is connected to the chimney, combustion air is taken from the room. The following protective mechanisms are built into the heater of this model:

traction control automatically turns off the product in case of problems;
flame ionization;
thermal sensor against overheating;
safety valve.

Works well at low pressures of 0.15-12 bar.

Price - from 7000 rubles.

Ariston NEXT EVO SFT 11 NG EXP

The Italian gas water heater has a stylish design. The laconic control panel does not contain unnecessary elements. The operation of the device becomes convenient thanks to the touch control. You get 11 liters of water per minute, with an average energy consumption of 19.58 kW.

Closed combustion chamber with built-in fan. Carbon monoxide is discharged forcibly. Electric ignition from batteries saves on electricity consumption. It is possible to fix the water level: the system will give a signal to stop heating.

Safety elements:

frost protection;
self-diagnosis system;
prevention of overheating.

Connection to a gas cylinder is possible. Additionally, it is possible to include a chimney in the package.

Cost - from 16,000 rubles.

Vailant MAG 14-0 / 0 RXZ H

Products of the "" brand will fit into your interior with dignity and provide several water intake points. This powerful heater delivers 14 l / min, consuming 24.4 kW. The device is of a closed type, therefore the combustion products are discharged through a pipe. The built-in fan allows high quality smoke removal.

There is a possibility of temperature regulation and 10 power steps. The burner made of chromium-nickel steel is equipped with a smooth modulation system from 40 to 100%. Copper radiator covered with SUPRAL protection. The ignition is semi-automatic, it is required to hold the button of the piezoelectric element.

The security system includes a traction sensor, flame presence, gas control. Case size 350x680x259 mm.

Price - from 21,000 rubles.

Bosch WTD 27 AME

This device combines maximum power (47 kW), fast heating (27 l / min) and savings thanks to condensation technology. The latter provides for the collection of condensate in a separate container for further use.

The heat exchanger is made of copper, without additional impurities. The steel burner works perfectly with liquefied fuels. Flame modulation function, turbocharged gas evacuation system turned on.

For safe operation, the following are provided:

flame control;
thermal sensors;
limiting the heating temperature.

Error diagnostics is carried out automatically by showing a malfunction code on the display.

Cost - from 70,000 rubles.

We hope our article and review of the models will help you determine which speaker to buy. It is not only the characteristics and functions that matter, but also how the technique fits into the overall design of the room. Another tip: in advance, before going to the store, determine the dimensions of the water heater that are optimal for your kitchen.

It is difficult to do without hot water in an apartment or house. If there is no central hot water supply, then the issue is solved by installing an electric or gas-type water heater. Electrical devices are not very economical and serve much less, gas water heaters are much more widespread, they are more economical and more efficient to use. When choosing this equipment, they pay attention to a number of important factors:

Product power: the ability of the column to deliver the required volume of hot water - there are 10-11, 13-14 and 16-17 liters per minute;
The ability to adjust the flow of water and its temperature;
Manufacturer - the better the device, the longer it will work and the faster it will heat up the water.

In our ranking of the top 10 dedicated to the choice of gas water heaters, we examined the most popular models that have a good price-quality ratio. It includes products that have received only positive reviews among consumers.

This water heater is quite large in size. You can use two taps at the same time - this will not affect the efficiency of work and the temperature of hot water. Ignition is carried out using a piezoelectric element, which ensures easy switching on of the device. A work indicator and a gas sensor are provided inside. If it works, then the column is automatically turned off.

The burner is made of high quality stainless steel. The heat exchanger is copper, has a long service life - about 15 years. The device does not overheat during operation. It is quite easy to connect the Bosch WR 10-2P to the water supply system, besides, it does not weigh too much - it can be easily hung on the wall. The water heater is connected to the gas supply exclusively by a specialist of the gas company. For its price range, this is one of the best water heaters.

Advantages:

Works reliably and stably;
With timely maintenance, no complaints arise;
Long service life;
Acceptable price.

Disadvantages:

The piezoelectric element does not always work;
A significant number of control sensors that are usually not needed or quickly fail during operation.

This automatic device, the heater is able to turn on and off by itself. Productivity is about 14 liters per minute, making it one of the optimal for centralized water supply systems, which produces about 9-11 liters per minute. The temperature is regulated only once - in the future, the water heater will maintain it on its own.

It is very simple to operate the device - there is only one handle on the case, which is responsible for temperature control. This heater does not have a display, so the water needs to be adjusted according to the sensations. To the left of the rotary handle is a special indicator light. If it lights up, it means that there is a need to replace the batteries in the piezoelectric element. When it blinks from one to five times in a row, you need to call the master. The water supply at the heater is lower, which makes it easier to connect the device. Near the water inlet, the device has another knob that adjusts the volume of water entering the heater. In fact, this is a standard regulator valve.

Advantages:

Attractive appearance;
High build quality;
Ease of management.

Disadvantages:

The copper heatsink is quite thin - leaks occur quickly in some models;
Batteries in piezo ignition are discharged rather quickly;
Clogged with limescale if the water is hard.

This is the only heater in this rating that has a manual ignition system. Its design provides a handle that allows you to adjust the magnitude of the flame, to the right of it there is another handle, which is responsible for the supplied volume of water. A digital display is installed under them, which shows the temperature of hot water. It turns on when the tap is opened.

A coarse filter is installed at the water inlet, which traps debris, which prolongs the life of the heater. The model has a low weight, due to which it can be easily hung on the wall. It is forbidden to connect to the gas line yourself. The heater works almost silently.

Advantages:

Copper heatsink is tin plated to extend service life;
High power level - about 19 kW;
Weight is only 5 kg;
The presence of automatic protection against overheating;
Display showing water temperature and possible errors.

Disadvantages:

The system of automatic shutdown at low water pressure is triggered;
After some time of work, it starts to make claps;
The need to turn on manually;
The temperature has to be regulated all the time.

This is a fairly compact design with a small flat body. The heat exchanger is made of copper, the ignition is set to automatic. It is an upgraded 4510 model. The capacity remains the same at 10 liters per minute. To this has been added the modulation of the burner flame depending on the water pressure. There is no need to constantly monitor and regulate the temperature.

On the front side of the body there are two control knobs: one is responsible for the flow of incoming water, the second is for setting the temperature. There is a digital display in between for more precise adjustments. In addition, the design provides for a significant number of sensors that ensure the reliability of operation and the safety of its use. They are responsible for the magnitude of the flame, water temperature, traction, there is a gas control system that does not allow leaks.

Advantages:

Simplicity of construction;
Maintainability;
Low cost of spare parts;
Acceptable cost;
Small dimensions;
The convenience of use.

Disadvantages:

Components periodically fail;
Short service life of the heat exchanger.

The maximum thermal power of this device is 17.3 kW, the effective throughput is 10 liters per minute. This is one of the best gas water heaters, it is additionally equipped with an electric ignition system, well suited for domestic water supply systems. The design has a small size, high performance. The column has a long service life and can be repaired if necessary. It houses a back draft valve that prevents combustion products from entering the room - this makes the column absolutely safe during operation.

An ionization electrode is also provided, which shuts off the gas supply if the flame suddenly goes out. The column can completely provide three parsing points with water at once. Another advantage is the ability to work with natural or liquefied gas.

Advantages:

There is an electric ignition system;
Open combustion chamber;
Wall-mounted column, gas and water are supplied from below;
There are a number of functions that are responsible for safe operation;
There are two knobs in the design - one is responsible for the maximum heating temperature of the water, the second regulates the magnitude of the burner flame.

Disadvantages:

Condensation forms on the cold water pipe during the summer months;
If the column is idle for about 7 hours, then the heat exchanger heats up very much from the wick - because of this, boiling water comes out for several seconds after turning on the water;
Cracks appear on plastic parts during operation, this leads to the need to replace them.

5. Neva 4511

The model is a classic instantaneous water heater, which is produced by the well-known Russian company "Baltgaz". The products are equipped with an automatic ignition system - just open a hot water tap. It works offline, so you don't have to connect the device to the mains, the main thing is to change the batteries in a timely manner. On the front panel there is a viewing window and two control knobs. One is responsible for the water pressure, and the second allows you to select the required temperature. The heater's productivity is 11 liters per minute, that is, this power will be quite enough to provide two points of water intake at once. The products have a heat exchanger made of copper, the gas burner has 10 sections at once. The nozzles are made of brass.

There are two temperature sensors at once - working and emergency. The gas control system and the traction sensor installed on the combustion chamber are responsible for the safe operation of the product. If the chimney is clogged or the draft has decreased for another reason, then it will simply turn off the column. The products run on natural gas, but it can also be converted to liquefied fuel, but for this it will be necessary to replace the nozzles with special nozzles, whose passage has a smaller diameter. Fuel consumption is not too high - 2.2 cubic meters of gas per hour. The efficiency of the equipment is high: it is 87%. The column is mounted to the wall, does not take up useful space. The body is made of galvanized painted steel, the weight of the apparatus is only 10 kg with overall dimensions of 56.5x22.1x29 cm.

Advantages:

Simple enough construction;
Autonomous automatic ignition system;
It can work even at low pressure in the water supply system;
Compact overall dimensions.

Disadvantages:

Quite a lot of noise;
The burner flame is not modulated smoothly.

Differs in reliable operation, the kit includes everything you need for mounting to the wall. It is equipped with an automatic ignition system and a hydrodynamic generator, which ensures the stable operation of the device. On the front side there is a multifunctional indicator panel that allows you to control the level of water heating and possible errors in the operation of the equipment. The power of the structure is controlled, which allows to reduce gas consumption; batteries are not provided in the automatic ignition system.

The heat exchanger is made of lead or tin free alloys. All plumbing fittings are made of polyamide, which is additionally reinforced with fiberglass. A sensor is provided that protects against backdraft, there is an outlet temperature limiter, which increases the safety of the device. The column has a valve, due to which you can change the volume of supplied water.

Advantages:

Compact device;
Reliable build;
Stable work over time;
The temperature can be adjusted to within a degree;
The water is heated smoothly, without surges;
The burner goes out when the hot water tap is closed.

Disadvantages:

The hydrogenerator emits a loud whistling sound;
Reacts sharply to pressure drops in the water supply system;
There is no protective cover at the bottom.

3. Bosch W 10 KB

Reliable and safe design, capable of providing two or three points of draw-off with hot water at once. With its help, you can quickly and comfortably heat water to the required temperature. Ideal for domestic use. The system has reliable protection against overheating, and is also equipped with a reliable technology for protecting the room from the penetration of flue gases. An atmospheric burner made of stainless steel is installed here. Copper heat exchanger. The average productivity of the device is 10 liters per minute at a hot water temperature of 25 degrees. The power of the water flow and its temperature are regulated manually. The column is capable of operating at low water pressure in the system - from 0.15 bar. If there is no access to the natural gas system, the device can be converted to liquid fuel.

The flame control sensor is ionization, which allows you to control the water temperature with an accuracy of one degree. The ignition system is electronic and runs on batteries. The mass of the device is insignificant - only 10.5 kg with dimensions of 400x850x370 mm. A system responsible for traction control is also installed here, which is able to automatically turn off the device, there is a maximum temperature sensor. It prevents water from heating above a certain threshold. The copper heat exchanger is equipped with turbulators to prevent deposits and scale formation.

Advantages:

Acceptable cost;
Heats water quickly to the specified parameters;
The column can work even at low pressure;
Compact overall dimensions;
High quality production;
Attractive appearance;
Long period of operation.

Disadvantages:

It ignites with a very loud click;
Batteries are not included.

2. Electrolux GWH 12 NanoPlus 2.0

In geysers of this series, only the most modern technologies are used, with the help of which it is possible to ensure comfortable and absolutely safe operation of this device throughout its entire service life. The water heater fully complies with all the requirements that apply to similar equipment. It has a battery-operated electronic ignition system. The controls are intelligent and intuitive. Safety control is multi-level - for this, a large number of different sensors are provided: gas leaks, ingress of combustion products into the room, maximum water heating temperature, and so on.

A liquid crystal display can be found on the front of the case, which informs the user of the temperature of the water in the system and the remaining battery charge. The burner is made of high-alloy stainless steel, which is able to withstand high temperatures for a long time, as well as its significant drops. Gas consumption is insignificant, the column works almost silently, it is capable of heating water even at low pressure in the system. The productivity of the device is increased - it is about 12 liters of water per minute. The chimney diameter here is 110 mm, so absolutely all combustion products will immediately enter the hood.

Advantages:

Quiet work;
Heats water almost instantly;
Economically consumes battery power;
Ignition functions without interruption;
Digital temperature indicator.

Disadvantages:

It is not advisable to use alkaline batteries.

A gas water heater, or rather its choice, is not an easy task. If you are reading this article, then you are probably faced with a task of this kind. This article is intended to help you. We'll tell you what to look out for first and outline a series of questions that we will ask in the store. So that in the end the purchased column fully meets all expectations for the comfort of use and the required safety standards.

Seven questions to help you make your choice:

1. Why do we need a gas water heater and what kind of apparatus is it in general?
2. What kind of power and performance should I choose for my family?
3. Will the gas water heater work, provided that I have low pressure from time to time?
4. What is power modulation and should I pay extra for it?
5. What kind of ignition is better to choose?
6. What is a heat exchanger and how to choose the best and most durable?
7. How many stages of protection and safety does the column have?

Why do you need a gas water heater and what is it all about?

The gas water heater has long been a part of modern life. This device can be found both in apartments and in private houses. In the modern world of central heating and hot water supply, gas water heaters have a future, and an undeniable advantage.

Considering that gas is currently one of the cheapest sources of energy, the gas water heater is the most economical device for preparing hot water. A liter of hot water heated by a gas water heater is several times cheaper than heated by an electric water heater.

The incoming water from the central water supply will also be more expensive. Conveniences include the fact that the column is a flow heater, which ensures the efficiency of water heating, besides, the column has a compact size, unlike a boiler, for example.

What kind of power and performance should I choose for my family?

The most important indicator worth paying attention to is the performance of the water heater. The power is determined in kW, and the water flow that the column is capable of heating in liters / min. These parameters are stated on the factory sticker, both on the packaging and on the device.

Such a plate can be easily found on the back of the water heater, as well as in the technical data sheet of the product. Productivity is the amount of water heating over a period of time with a temperature difference at the inlet and outlet at a delta of 25 C. For example, it looks like this: the capacity of the column is 10 liters per minute. Let's say water enters the +12 C column, comes out to the consumer comfortably at +37 C ..

We get that the device is capable of providing a flow of 10 liters per minute with a temperature difference of 25 C. It should be understood that this value is very arbitrary and depends on many factors, so by increasing the temperature we need, we will accordingly reduce the flow of water. The flow of the gas water heater you need is determined by the number of mixers in the house.

For an average, the required flow for the mixer is considered to be up to 7 liters per minute. That is, a typical indicator of the productivity of a gas water heater of 10 liters per minute is quite enough if you have one mixer in the kitchen. For comfortable operation of the device in an apartment with two water points, it is recommended to purchase a gas water heater with a capacity of 13 liters per minute

Table for determining the size of the gas column:

Will the gas water heater work, provided that I have low pressure at times?

In addition to performance, you should focus on the ability of the device to turn on and work stably at low pressure. The parameter is responsible for this. "Minimum switch-on pressure". This parameter is also spelled out on the product nameplate. Many older buildings are characterized by a low pressure water supply.

A minimum switch-on pressure value above 0.15 bar will most likely lead to problems when the water heater is switched on. In addition, the components at the joints must withstand water shocks. Of course, it is difficult to visually determine this, but the manufacturer, who cares about his reputation, uses materials that are quite durable.

Water hammer is accompanied by a sharp increase in pressure. The consequences of such a blow are leaks in the joints. The pressure that the connection and materials must withstand should not be lower than 11-12 bar.

What is power modulation and should I pay extra for it?

We will try to explain the difficult concept of power modulation with an example. Imagine a situation when a person is taking a shower and suddenly cold water comes out of his watering can. The man swears, and a moment later boiling water is pouring over him. Sound familiar?

The reason for this was the circumstance in which one of the household members turned on the tap in the kitchen to wash the apple. So, equipping the gas column with the power modulation function helps to avoid temperature fluctuations. With this equipment, the water heater adjusts the flame power to the burners, avoiding the influence of pressure changes in the system.

As you might guess, the maximum flame of the burner is determined by its power. The lower range determines the sensitivity of the components of the water armature, or rather its membrane. The lower the modulation value, the better. The lower this value, the less the device reacts to pressure changes in the system. A good modulation range can be considered an indicator from 40 to 100% of its power characteristic.

What kind of ignition is better to choose?

When choosing an instantaneous water heater, it is necessary to decide on its ignition method. More recently, a gas column was fired in the following way. With the help of matches, they made fire, the valve opened the access of gas to the wick, set it on fire and it burned constantly. Today the modern market offers two main types of ignition.

The first is to ignite the igniter directly and the second way to ignite the column from the electrode. The first method assumes that the igniter is ignited from an electric pulse. An electrical impulse can be supplied from a battery or a piezoelectric element, sometimes generated by a generator. The combustion of the flame on the igniter is monitored by an ionization sensor. After that, gas is supplied to the burner, and it ignites smoothly.

If the gas column is equipped with direct ignition, then the gas is immediately supplied to the burner and ignited by an electric pulse not through the igniter, but immediately in the combustion chamber. In case of imbalance in the timing of gas and electrical impulse, a small pop may occur. This is due to the fact that the gas accumulates in the gas chamber in a small amount and, when ignited, a microexplosion occurs.

When using such a column, households are likely to encounter discomfort. While in the store, check that the ionization sensor and the ignition electrodes are fixed exactly in their positions during production.

What is a heat exchanger and how to choose the best and most durable?

Modern manufacturers have not equipped gas columns with such heat exchangers for a long time due to low efficiency. We can find copper heat exchangers everywhere and in almost any gas column on the water heater market in the Russian Federation.

However, for a long service life, as well as long-term operation without failures of the device, it is necessary to use high-tech oxygen-free copper. The quality of copper depends on impurities of other metals, as well as all kinds of additives. Quality copper can be visually identified by its specific bright color and luster.

Manufacturers who cannot afford high-tech copper paint their heat exchangers with paint in order to reduce the negative effects of condensation. Brands from well-known manufacturers do not use manual labor in the joints. Modern production uses robotic technology for these purposes. This is how Bosch uses high-precision ultrasonic soldering.

This approach eliminates the presence of various black dots or lines when using manual soldering. Black spots indicate overheated areas during the manufacture of the heat exchanger. Over time, in these places, with a high degree of probability, there will be a burnout, which will lead to a leakage of the heat exchanger.

How many levels of protection and safety does the column have?

Since the consumer is dealing with a gas and a device in which the combustion process is carried out, it is logical to ask the question: How many degrees of protection and what level of safety does a gas water heater have? Currently, a modern gas water heater must be equipped with at least three essential protection sensors.

Firstly, it is a sensor for ionization control of flame combustion. The ionization electrode is placed next to the Westerners or directly next to the main burner. The operation of the sensor is simple enough, but at the same time very reliable. When the flame burns, an ionization current is generated at the electrode. It is this current that is held by the gas access valve. As soon as the flame is extinguished, the gas supply is immediately blocked.

The second danger for the operation of the device is the lack of draft in the chimney. Protection against this trouble is assigned to the temperature sensor, which is located at the top of the flue gas collector of the water heater. In the absence of draft, the combustion products heat the control temperature sensor, which in turn sends a signal to the valve, which shuts off the gas.

The third degree of protection is provided by a temperature sensor on the heat exchanger. The gas shuts off if, for some reason, the temperature of the heat exchangers exceeds 100 degrees Celsius

In addition to the degrees of protection described, there is another so-called “reverse draft” blocking. The phenomenon occurs if new plastic windows are installed in non-modern buildings. This innovation drastically limits the air supply necessary for the combustion of the flame.

In winter, when the wind is strong, the danger of "overturning" the draft in the chimney increases. Since the consequences of this conception can turn into big problems for household members, there are methods of dealing with such things. For example, Bosch has introduced a reverse draft control sensor that allows the speaker to be turned off when such a situation occurs.

Today we have asked and answered seven basic questions that will help us with the right choice of a gas water heater. ...