Rating of instantaneous gas water heaters without chimney: the best offers and tips for choosing

Alexey Dedyulin
Checked by a specialist: Alexey Dedyulin
Author: Kristina Skoritskaya
Last update: November 2024

Constant access to hot water makes life much easier. However, central hot water supply is not always uninterrupted. And connecting a summer house or a cozy cottage to it can even become an impossible task.

Fortunately, a powerful gas water heater without a chimney easily solves the problem of the lack of hot water, even outside the city. Modern models of flowing columns instantly provide a household with water of the right temperature and consume resources quite economically.

In this article we compiled a rating of the best gas water heaters working without a chimney, examined the technical characteristics and features of specific models, which will help even the most inexperienced buyer to understand the main nuances of choosing a good water heater and choose the best type of equipment for yourself.

TOP-9 instantaneous gas water heaters without chimney

A place
Product
Rating
power, kWt
Product., L / min
Price
Models with a productivity up to 8 l / min
Models with a productivity of 10 l / min
Models with a productivity of 10 l / min

Models with a productivity up to 8 l / min

#1

Bosch WTD 12 AME

Reliable and powerful model from the manufacturer with an impeccable reputation

Expert rating:
98
/ 100

The modification of the Therm 4000 S series of the Bosch brand is distinguished by standard dimensions, thanks to which the column can be placed even in a small room.

Despite its relatively modest performance, the water heater, designed for one point of water intake, is quite powerful. Therefore, with it, the water is heated almost instantly to 60 degrees. It is also convenient that the Bosch Bosch WTD 12 AME model works without interruptions even with a low water pressure at the inlet: the unit only needs 0.1 atm to start the heating process.

Pleasing and gas consumption: this column consumes 2.1 cubic meters. m / h when connected to a common gas pipeline and 1.7 cubic meters. m / h when working from a cylinder. Electric fuel also contributes to fuel economy, from which the burner switches on exclusively when the valve is opened.

Specifications:

  • power - 20.8 kW;
  • productivity - 8 l / min;
  • minimum / maximum water pressure - 0.1 / 12 atm;
  • type of control - electronic;
  • Dimensions (WxHxD, mm) - 300x568x170.

Bosch WTD 12 AME can be called the optimal model for houses with low pressure in the water supply. And work on liquefied gas from a cylinder allows the use of equipment even where gasification has not yet been implemented.

Advantages
  • Cost-effectiveness
  • Control of temperature fluctuations up to 1 degree
  • Great power
  • Water heating up to 60 degrees
  • Uninterrupted operation at low water pressure
disadvantages
  • Cost
#2

Oasis b-12w

Compact and inexpensive speaker for very small kitchens

Expert rating:
96
/ 100

The budget column from Oasis has a small capacity, but fully compensates for it with its dimensions and low weight of 4.2 kg. It is one of the most compact in height and depth, making it suitable for small rooms or even niches. Electric ignition is carried out by batteries, which makes the device completely independent of the mains.

A bonus is the operation in conditions of reduced pressure in the gas pipeline. For a normal start of heating the model, a pressure of 0.02 MPa is sufficient. At the same time, the column maintains a high efficiency of more than 90%. The manufacturer provides an opportunity to limit the maximum temperature of water heating, which saves gas.

Specifications:

  • power - 11 kW;
  • productivity - 5 l / min;
  • minimum / maximum water pressure - 0.2 / 8 atm;
  • type of control - mechanical;
  • Dimensions (WxHxD, mm) - 290x370x120.

Oasis B-12W is installed vertically with a lower eyeliner. A multi-level security system makes operation as reliable as possible, which is especially important for families with children.

Advantages
  • Compact and light weight
  • Low pressure in the gas pipeline
  • High efficiency
  • Affordable price
  • Availability of display and thermometer
disadvantages
  • The first malfunctions may appear after a couple of years of operation

Models with a productivity of 10 l / min

#1

Roda JSD20-T1

Practical performance speaker in ultra-slim body

Expert rating:
99
/ 100

Among gas water heaters operating without a chimney, the Chinese-made model stands out for a more compact depth, which provides a fairly flexible installation. Roda JSD20-T1 is equipped with a gas control system and makes it possible to limit the temperature of water heating.

A useful feature of the model is a reliable anti-freeze system. As soon as the heat exchanger temperature drops below +5 degrees, the built-in ceramic heating elements automatically start heating the water in the tubes.

The model is maximally adapted to work in conditions of low gas pressure and is extremely sensitive to the opening of a water tap. In addition to the integral gas control, the water heater is equipped with protection against overheating and exceeding the permissible water pressure.

Specifications:

  • power - 20 kW;
  • productivity - 10 l / min;
  • minimum / maximum water pressure - 0.3 / 8 atm;
  • type of control - mechanical;
  • dimensions (WxHxD, mm) - 330x515x140.

The modification is extremely protected from pressure or temperature surges, has internal control systems, therefore it is optimal for installation in problem housing with old communal utilities.

Advantages
  • Adapted to difficult operating conditions
  • Simple operation and setup
  • Ergonomic LED display
  • Affordable price for class
disadvantages
  • Low life heat exchanger
#2

Bosch WTD 15 AME

High-quality liquefied gas water heater

Expert rating:
98
/ 100

Another Bosch model in the review, able to provide homes with hot water that are not connected to the gas supply network. It features faultless build quality and reliable performance. In addition to limiting the maximum heating of the carrier, the column has a flame modulation system. The option allows you to adjust the strength of the fire, strictly maintaining the set water temperature.

The heat exchanger itself is made of high-quality copper without undesirable impurities, resistant to burning. The model is assembled to the conscience and is practically not subject to breakdowns.

Specifications:

  • power - 25.4 kW;
  • productivity - 10 l / min;
  • minimum / maximum water pressure - 0.3 / 12 atm;
  • type of control - electronic;
  • Dimensions (WxHxD, mm) - 300x568x170.

Bosch WTD 15 AME belongs to the Therm 4000 S series. It is characterized by economical consumption of blue fuel and has a spectacular design. This model can be recommended to consumers who are willing to overpay for reliability, smooth operation and a decent level of equipment safety.

Advantages
  • Multilevel equipment protection
  • High power
  • Stylish design
  • High-quality assembly without backlashes and crevices
  • Fast heating of water to 60 degrees
disadvantages
  • High price
#3

Superflame SF0420T bal (turbo)

The model most suitable for domestic conditions

Expert rating:
96
/ 100

The turbocharged column SF0420T bal is just that gas water heater working without exhaust, which is ideal for working with unstable water pressure. After all, the Superflame brand itself was registered in Spain, most of the brand's products are focused on Europe. But after entering the Russian market, the manufacturer improved the speakers to suit the operating conditions in the CIS countries.

A pleasant bonus for buyers of brand water heaters is the opportunity to support the domestic manufacturer, because the equipment is assembled at the Tula gas equipment factory and meets the ISO 9001-2011 standards.

The protection system is made at the highest level: the functionality will not allow the column to turn on without water, which protects the heat exchanger from burnout. An overheat blocking unit is also provided. Of particular note is the filigree setting of gas and water flow, carried out by two rotary knobs.

Specifications:

  • power - 20 kW;
  • productivity - 10 l / min;
  • minimum / maximum water pressure - 0.25 / 7.5 atm;
  • type of control - mechanical;
  • Dimensions (WxHxD, mm) - 320x520x150.

The model is optimal for use in buildings with low pressure in water pipes. It is recommended for purchase to anyone who wants to independently adjust the potential fuel and water consumption in accordance with their needs.

Advantages
  • The most accurate setting
  • Several levels of emergency protection
  • Cost-effectiveness
  • Low price
  • High build level
disadvantages
  • Warranty period is only 1 year.
#4

Gorenje GWH 10 NNBW

Reliable multi-point pressure water heater

Expert rating:
95
/ 100

Inexpensive model with an extremely wide range of useful additions. Gorenje GWH 10 NNBW is equipped with a thermometer, on and heating indicators, which greatly facilitate monitoring the operation of the equipment.

The number of integrated defense systems is also impressive. The model is not susceptible to freezing, has water and gas filters, and is blocked from overheating. Additionally, it allows you to adjust the threshold for heating water, which makes it possible to reduce gas consumption.

Specifications:

  • power - 20 kW;
  • productivity - 10 l / min;
  • minimum / maximum water pressure - 0.2 / 10 atm;
  • type of control - mechanical;
  • Dimensions (WxHxD, mm) - 327x590x180.

The model is undemanding to the pressure of water in the system. Technical parameters and the quality of the assembly performed significantly exceed the price segment of the product.

Advantages
  • The best combination of specifications and price
  • Protective filters
  • Multistage protection system
  • Low cost service
  • Smoothness settings
disadvantages
  • Quite noisy

Models with a productivity of 10 l / min

#1

Bosch WTD 18 AME

Powerful speaker with wide functionality and excellent build

Expert rating:
98
/ 100

Bosch WTD 18 AME is a canonical model that embodies all the advantages of the Therm 4000 S. It has the highest power rating. Economical gas consumption is possible due to the presence of an atmospheric burner that carefully mixes fuel with air.

The accuracy of water heating is adjustable up to 1 degree, so that the heater optimally adapts to the needs of the family. The self-diagnosis system and protective system level the likelihood of malfunctions or emergency situations.

A high-quality copper heat exchanger lasts for years, so the Bosch WTD 18 AME is practically not prone to breakdowns, and any inaccuracy in operation is instantly displayed on the display. The device is able to modulate the flame depending on the current conditions, so the given outlet temperature is simply maintained perfectly.

Specifications:

  • power - 31.6 kW;
  • productivity - 12 l / min;
  • minimum / maximum water pressure - 0.3 / 12 atm;
  • type of control - electronic;
  • dimensions (WxHxD, mm) - 364x568x175.

Bosch WTD 18 AME is ideal for those who need a high heating temperature with a relatively economical cost of resources. This column is extremely reliable and productive, therefore, fully justifies its cost.

Advantages
  • Power and performance
  • High carrier heating temperature
  • Sensitivity to opening the tap
  • High quality build
  • Maximum control of operation and parameters
disadvantages
  • High price
#2

DEMRAD Compact C 350 F

High performance natural gas and bottled gas column

Expert rating:
97
/ 100

Like competing models from Bosch, the Compact C 350 F from DEMRAD can run on LPG and main gas with proper configuration. The removal of combustion products is turbocharged, the pilot flame is completely absent, which greatly facilitates operation. An additional advantage of the modification is the ability to service up to three points of water intake.

The security system of the device is carefully thought out. The model has fuses for extinguishing the flame, overheating of the heater, increasing the pressure in the water circuit. Additionally, a water flow sensor and pilot burner controller are integrated in the unit.

Specifications:

  • power - 27.9 kW;
  • productivity - 14 l / min;
  • minimum / maximum water pressure - 0.5 / 10 atm;
  • type of control - mechanical;
  • dimensions (WxHxD, mm) - 383x685x283.

One of the most protected columns in the rating should be bought by those who value the safety of operation. High performance of the model will be a pleasant bonus and will complement the pleasant impression of using the model.

Advantages
  • average cost
  • Maintenance of several water points
  • Multi-level speaker protection
  • LPG operation
  • Marginal productivity
disadvantages
  • The considerable dimensions of the column
#3

Termaxi JSG-20R

Cost-effective column with ignition from the network

Expert rating:
96
/ 100

With a relatively modest power and performance, the Termaxi JSG-20R heats the water to the limit of 65 degrees, so that the user can debug the temperature that is most comfortable for himself. Moreover, the nominal gas flow rate is only 2 cubic meters. m / h The equipment itself complies with ISO 9001 standards, which serves as an additional confirmation of the high quality of the model.

Electric ignition is carried out from the network, which makes the water heater vulnerable to voltage surges, however, it saves money without buying batteries or accumulators.For smooth operation, many users recommend installing Voltage regulator.

The gas unit has a Winter / Summer switch, so in the warmer months the user can reduce fuel consumption by about 25%.

Specifications:

  • power - 20 kW;
  • productivity - 10 l / min;
  • minimum / maximum water pressure - 0.2 / 6 atm;
  • type of control - electronic;
  • Dimensions (WxHxD, mm) - 350x560x142.

The model is extremely economical and fully meets the needs of a family of 3-4 people. Working at low pressure in the water supply system makes it possible to install the Termaxi JSG-20R even on the upper floors, which so often lack water pressure.

Advantages
  • High heating temperature
  • Electric ignition from the network
  • Work at a low pressure of water
  • Protective systems against freezing, overheating, switching on without water
  • The presence of a thermometer, indicators of heating and inclusion
disadvantages
  • Stable Power Supply Dependence

The main criteria for choosing a gas water heater

A feature of a chimneyless gas flow type water heater is practically instant water heating to the set temperature. Therefore, one of the most important criteria for choosing this type of technology is power. This parameter directly affects both the performance of the device and the maximum temperature to which the column can heat the water.

But do not forget that the performance indicator is indicated in the nominal value and implies the passage of water during heating about 25 degrees. For a family of 3-4 people, a column producing about 10 l / min is quite enough.

Type of gas (liquefied gas or trunk) is a key factor in choosing a water heater for installation in a non-gasified building. Therefore, pay attention to the equipment labeling and manufacturer's recommendations.

Connecting a flowing gas column to a cylinder in an apartment
The nodes necessary for reconnecting the water heater from the main gas to the liquefied gas are not always included in the package. Parts may need to be purchased separately.

Plays a significant role in the reliability of the device heat exchanger type.

This assembly is classified by the material of which it is made:

  • Steel heat exchangers significantly reduce the cost of the column, resistant to corrosion processes and quite reliable. However, parts of this type weigh a lot, which affects the mass of the entire structure.
  • Highly refined copper heat exchangers are optimal. The assembly of this material is characterized by high efficiency, excellent heat transfer and corrosion resistance.
  • High Impurity Copper - a sign of an inexpensive column. This is a perfectly acceptable material, however, impurities in the metal significantly reduce the life of the water heater, prevent uniform heating of the heat exchanger, and most often require repair.

From kind of ignition depends not only on the ease of operation of the water heater, but also the economics of gas costs. So, a simpler piezo ignition, which implies starting the column after pressing the button, contributes to an increase in gas consumption by about 20%. It is this amount of blue fuel that is wasted due to the constantly working igniter.

Electric ignition from batteries or mains is more economical, as it is carried out immediately at the moment of opening the crane. But batteries need to be changed occasionally.

Auto-ignition columns from a spark produced by a hydroturbine are equally economical. However, such models are sensitive to pressure in the water supply and the quality of the water itself.

Gas turbine turbine
A water turbine in a geyser is one of the most moody nodes. Therefore, water heaters with this type of ignition are not recommended to be installed in houses of the old foundation, as worn-out water pipes are an additional source of contamination of structural parts

Security systems - one of the most important complexes in the design of the column. Availability gas control - a prerequisite for operation. Additional functions of the device will also be useful, for example, protection against freezing of the media, the presence of check valves that keep the device from drops water pressure and so forth

The main sensors for monitoring the gas column are:

  • heat exchanger temperature indicatorblocking the operation of the heater at dangerously high temperatures;
  • gas controlinterrupting fuel supply during flame attenuation;
  • flue gas temperature sensor in models requiring connection to a chimney.

Type of control the column is an exclusively subjective parameter of choice, which cannot be said about the method of changing the temperature of the medium.

Water heater may have flame modulation or work with constant power. The latter involves temperature control in accordance with the pressure of the water, which is not always convenient. Modulation, on the other hand, allows the burners to give out the temperature set by the user even when the pressure of the water decreases when the crane is partially covered.

Conclusions and useful video on the topic

Detailed recommendations on choosing a good geyser from an experienced master are presented in the video below:

The above rating of top models from trusted manufacturers includes devices that are optimal for domestic conditions, which will reliably and efficiently heat water even if the common water supply and gas system are not functioning properly.

A gas water heater that can be installed without being connected to the chimney remains a real find for most buyers. Such models are distinguished by a fairly simple installation, stable operation and rich functionality.

But do not forget that gas water heating is a dangerous equipment, therefore it is very important for connecting speakers invite a specialist to help avoid trouble. And also do not forget about the rules fire safety when using it.

Have you recently chosen a gas water heater and are quite satisfied with your purchase? Share with other users the main difficulties that you had during the selection process. Tell us which column parameters, in your opinion, should be paid attention first of all. Add a photo of your column in the comment block.

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