How to choose an electric instantaneous water heater? The best instantaneous water heater for an apartment: reviews. How to choose the right instantaneous water heater for an apartment

Why is there a water heater in the apartment? Perhaps this question did not torment those who travel to distant countries during the traditional summer hot water outages. But the majority of residents of our country who managed to purchase a heater managed to appreciate the benefits of a hot shower at any time of the year and day.

To do this, it’s not enough to go to the store and compare prices. It is worth knowing that the devices operate on gas and electricity and differ in volume, performance, type of installation and position, material and many other parameters. IN modern apartments rarely used gas water heaters, especially large volumes. Therefore, we will dwell in detail on popular electric models, defining best options For various conditions. "How does it happen? , You can read in our article.”

Flow devices are compact and inexpensive. This heater fits perfectly in a cabinet under the kitchen sink and does not take up much space on the bathroom wall. Installation takes minimal time. With this “helper” you won’t have to wash dishes and hands in cold water. The jet, passing through the heating element, has an output temperature of 35-40 degrees, sufficient for a comfortable shower.

But along with all the advantages of these silent units, there is a significant drawback - high energy consumption. Therefore, flow-through models are more suitable for economical seasonal use during shutdown periods hot water and for apartments in which, for various reasons, cold water runs out of the hot water tap at night.

Note! If the wiring in your apartment has not changed since the times of the Soviet Union, it is better to refrain from purchasing an instantaneous water heater or completely replace the electrical cables.

Instantaneous water heaters are produced in two versions - single- and three-phase. The models also differ in the principle of operation - pressure and non-pressure.

1. Single-phase devices are more popular, the power is usually from 4 to 8 kW, less often 12 kW.
2. Three-phase The equipment is considered professional, costs several times more and is rarely installed in apartments. Such water heaters differ from single-phase ones not only in power, design, functionality, but also in the ability to simultaneously service several water points.

Pressure

Pressure water heaters flow type are very simple and do not require special care/maintenance. They heat the stream of water almost instantly, starting to work as soon as the tap opens. Such products are installed directly into the water riser.

Popular manufacturers of quality water heaters:StiebelEltron,Vaillant,Siemens,AEG,Unitherm,Clage, Timberk.

Video - Review of Timberk Watermaster instantaneous water heaters

Gravity

Non-pressure instantaneous water heaters are installed next to the water source and can be equipped with a shower and spout. The big advantage of a pressureless tank is mobility. Such a device can be quickly installed if necessary and removed when the need for hot water supply disappears. But it is worth knowing that non-pressure water heaters have very low power. Those. the output of heated water will be no more than 1-3 liters per second, or the water will not warm up enough. Another drawback lies in the design - over time, the heat transfer of the heating element may decrease.

To take a shower comfortably, you should purchase a heater with a power of 8 kW or more, but such devices require high-quality wiring and mandatory grounding.

Instructions for Atmor Basic 5 kW

Video - Features of choosing instantaneous water heaters

A little about performance

Productivity as the number of heated volumes of water per unit of time is always indicated by manufacturers. However, for models of a low price category this figure may be underestimated, because the incoming water t = 20°C is taken into account, while in Russian apartments the flow temperature in the pipes rarely rises above 15 degrees. Large companies, on the contrary, underestimate productivity indicators, taking into account minimum temperature incoming water (total 10°C).

Therefore, it is worth purchasing high-quality products from well-known brands, avoiding shelves with cheap products, even if the latter have fabulous performance indicators in the description.

Flow-storage water heaters for apartments

Flow-storage devices are perfect for use in apartments. Water heaters are connected to a regular shower hose and a standard 220 V socket. Even a housewife can handle the installation. The power of compact water heaters is small (about 2.5 kW), but in just half an hour a sufficient amount of heated water will accumulate in the tank, which is enough to take a shower.

Popular manufacturers:"Etalon" and "Termex".

Price range: 5-7 thousand rubles.

Table. Characteristics of ETALON MK 15 Combi

Storage water heaters or boilers are devices that not only heat, but also maintain the temperature of water for a long time. You can use heated water even if the heater is unplugged. One water heater is enough to service all the plumbing. appliances in the apartment.

Boilers are much more convenient to use than flow-through devices, but they take up more space and installation is a lot important nuances. Such a device cannot be simply removed from the wall and hidden in a closet when needed. alternative source hot water will disappear.

How to choose tank volume

The tank volume acceptable for an apartment ranges from 50 to 100 liters. This supply of water is enough for a family of two to four adults and a small child. If periods of hot water shutdown are short-term and you plan to use hot water only for domestic needs, it is worth installing a more compact 30-liter boiler.

To calculate the approximate daily volume of water consumed, it is best to check the readings of water meters, checking the readings at intervals of 24 hours. The approximate volume of water required for 1 day for 1 person is 230-300 liters. Since the water in the boiler is heated to 75-85 degrees, after which it is diluted with a cold stream, the output is 2 times more warm water, what was heated by the device. Based on this, it will be enough for one user to turn on a 50-liter heater twice a day to provide himself with warm water for the whole day.

Mounting method

Boilers are mounted on the wall in a vertical or horizontal position, installed in niches under kitchen sinks or on the floor. The latter type of installation is typical only for large-sized models with a volume of 150 liters and above. Horizontal boilers are more convenient and compact, but are more expensive than vertical ones.

The hidden location of the heater under the sink is very convenient, but most often boilers are hung on the wall in the toilet or bathroom, next to the water supply. This is due to the design of devices that differ in the type of liner (upper or lower).

Tank

Boiler tanks are made of steel (including stainless steel), less often - copper (very expensive devices), as well as with coatings of bioglass porcelain, glass ceramics, enamel, titanium enamel. A new product is a coating with silver ions AG+ from the Ariston company, which not only protects the metal from corrosion, but also has a pronounced antibacterial effect.

When purchasing a tank, it is important to pay attention to the quality of its thermal insulation. Best materials– polyurethane and polyurethane foam. The thicker the insulation (optimally 35 mm), the longer water will remain hot in the tank, the less electricity will be consumed. The low weight of a volumetric device will indicate low quality thermal insulation. Such models are cheap and suitable for rare short-term use in cases of seasonal or emergency power outages. energy.

The low weight of the device will additionally indicate the unsatisfactory quality (small thickness) of the internal tank. A thin layer of enamel will quickly crack. When choosing, you should compare several models of the same displacement, pay attention to their weight and make sure that better-quality products weigh > 10% more.

Heating element and its power

A heating element is a heating element that is made of carbon or alloy steel, copper, etc. Heating elements can be dry (built into a sealed flask) or wet (in contact with water, heating it). The heating element must have space for attaching the magnesium anode.

Straight heating elements are often installed in vertical boilers, while long curved ones are installed in horizontal ones. It is better to choose a heating element with the longest length. Because short heating element is different high temperature surface heating and rapid scale formation.

Fastening is carried out either with a ¼ nut or a flange (diameter 42-72 mm, M4, 5, 6 or 8 thread).

Conclusion: for installation in an apartment, it is better to choose a water heater with a 2 kW heating element, a large surface area, made of copper or “dry” (with a steatite flask).

Service

Boilers require periodic maintenance:

• cleaning the internal tank and heating elements from scale;
• replacing the magnesium anode.

Depending on the water quality, maintenance is recommended once every 1-2 years.

1. Assess your budget and frequency of use of the device. Expensive equipment lasts longer, but there is no need to spend a huge amount on a water heater that will be used 2-3 days a year.
2. Consider where you will install the water heater. Measure the wall with a tape measure and check whether it can support the weight of the device. The dimensions of water heaters are indicated in the instructions. The position and type of wiring are selected based on the free space in the room. Flat horizontal devices are aesthetically pleasing and compact, while vertical cylinder-shaped devices are cheaper. The volume of the water heater should be selected based on the number of users.
3. Please pay attention to all technical specifications. Check the power of the heating element, the material used to make the parts, the thickness of the thermal insulation (for boilers), the type of coating, heating time, etc.
4. The interface should be clear and control should be convenient. The best water heaters are equipped remote control and have an electronic panel on the body.
5. Buy equipment from well-known brands with a long warranty period. Don’t forget to find out about the service center, installation and cost of spare parts.

We remind you that a water heater is purchased for many years. Take your time with the choice, compare prices and water heaters.

Video - Choosing a water heater

Flow-type electric water heating systems have significant advantages over storage devices. First of all, it is the perfect design and compact dimensions of the unit, allowing the equipment to be installed in small rooms. Also distinguished higher speed heating water, which makes household work easier.

In order to decide which is better to buy a flow-through electric water heater, you should know that the installation of the device requires an individual electrical cable and a circuit breaker on the panel. Therefore, installation of equipment is prohibited in buildings of the old type of development. In this case, it is recommended to use equipment with a power of up to 3.5 kW.

How to calculate the required power?

Good instantaneous water heater must meet not only the consumer’s criteria, but also the water consumption required to carry out all household processes.

The maximum value of the power indicator of an electric heating device is calculated according to the following formulation:

Decoding of component symbols:

• P - maximum power value of the device, kW;
• R - flow rate of circulating water, liters per 60 seconds;
• T - required temperature regime liquid coming from the mixer;
• ∆t - required temperature increase, o C. ∆ t = T - tvx.
• Tvx - temperature regime of cool liquid: cold season +5°C, hot season - +15°C.

These values ​​can also be determined more in a simple way. The performance indicator inherent in the most suitable option must be divided by two. The result will be the expected water consumption in liters per minute at a temperature of 20-30°C.

For example, a device with an efficiency of 16 kW provides the user with 8 liters of heated liquid per minute. This amount will be enough to fulfill one of the goals listed in the table.

If it is necessary to distribute the water supply to several points, you need to focus on collecting the most frequently used water. If you plan to pick up at several nodes simultaneously, then you should select a high-performance unit.

It is recommended to install a 13-36 kW instantaneous electric water heater in residential buildings, where consumption is provided large quantity electricity. In connection with the division of classifications, two types of units were formed: three-phase and single-phase.

Pressure or non-pressure devices

In addition, the equipment has two groups of pressure and non-pressure equipment.

Pressure-type flow-through electric units make it possible to use water from any mixer installed in the cottage. The device is installed directly on the cold and warm outlet pipeline. This method is considered the most convenient in case of disconnection of the centralized water supply system.

Starting and stopping the operation of the device is carried out at an automated level, using a control unit that responds to the flow rate.

A set of the best instantaneous water heaters includes bath-shower and kitchen attachments. The parts function exclusively for one water pressure unit. This modification is most suitable for use during the warm season in a private home.

If water intake mixers are located at a large distance from heating equipment, it will be more profitable to purchase separate devices for each unit. This method will significantly reduce the energy consumption for heating the liquid in the pipes.

VIDEO: how the flow machine works

Since non-pressure technology is not able to provide the home with a large amount of liquid, the openings of the shower element are small. This way you can get good pressure.

If the coolant has a high hardness index, it is necessary to regularly wash the nozzles with a solution that removes scale.

Most non-pressure equipment is designed for use in countries with warm climatic conditions. The devices are not designed for harsh weather conditions, so they cannot perform well at low temperatures. The water will be heated to no more than 30 o C.

Review of popular models

The technical market presents a wide range of heating equipment from various manufacturers. To choose the right device, you should study the technical characteristics of the most suitable models.

The equipment varies in technical characteristics, performance and additional options. The units of the Swedish company are equipped with an effective heating element in the form of a spiral.

The instantaneous electric water heater on the tap has an expanded clay filter and a copper flask.

The Polish brand is one of the best instantaneous water heaters of systemic and non-pressure types. The parts that have direct contact with fashion are made of copper and brass material.

The entire line of these units is equipped with an overheating protection system and has safety valve. The front panel is decorated with a display, where there are temperature and on/off indicators. The main complaint of users is frequent shutdowns and periodic “lumbago” cold water.

When using, make sure that the device does not operate on full power. This leads to overheating of the wiring and possible short circuit.

The kit does not include a cable or plug. They are purchased separately. Recommended cable cross-section is 4 mm. A separate connection via the machine is required. The quality is excellent. In its price category, this is a leader, which is consistently included in the TOP 10 instantaneous water heaters.

The line of this manufacturer is equipped with a complete set:

• overheat protection;
• water filter;
• plug and wire for connection

In general, it is characterized as a medium-power, trouble-free device, easy to use and quite reliable. Due to its low performance, it does not require separate wiring, but for safety reasons it is not recommended to turn it on simultaneously with other powerful electrical appliances.

The WHE 4.5 XTR H1 model requires mandatory grounding. As for negative reviews, many users agree on one thing - it’s inconvenient without an on/off button. First you have to open the tap and then plug the device into the outlet.

Before you order a 2016-17 water heater in an online store, you should first answer a number of questions:

1. Possibilities of the house in which the installation of the device is planned. Do they meet the requirements of the unit?
2. Decide on the installation method and, if you do not plan to carry out the process yourself, order an installation service from a specialist.
3. Check warranty periods and availability of spare parts.

In any case, regardless of the condition of the wiring, first of all, after purchase, make a separate cable and connect it to the panel. It would also be advisable to check the condition of the water supply and connect the water heater using flexible hoses.

VIDEO: How to choose a water heater? Which one is better to buy?

Choose an electric instantaneous water heater for the apartment, provided there is an uninterrupted supply of cold water. There are many models that differ in technical characteristics. If the question arises about how to choose an instantaneous electric water heater, all the parameters of the device will have to be studied. After all, an incorrectly selected model can create two problems: it will not provide full hot water or it will waste extra electricity.

Tankless water heaters are placed under the sink or next to the shower. To choose the right instantaneous water heater, you need to know that some devices work with high pressure water, while others need only a weak flow of liquid. In accordance with this parameter, devices are divided into two classes:

The manufacturer completes non-pressure water heaters with a shower head or mixer with a set of pipes for connection.

When choosing an instantaneous water heater, first measure the pressure in home plumbing, and then it is determined which class of device is suitable.

Selection by control type

Having decided on the class, it is still impossible to say which instantaneous water heater would be better suited. There is another equally important parameter - the type of control. Here the device is similarly divided into two groups:

• Hydraulic is the simplest type of control. This parameter is typical for cheap flow-through models. The mechanism consists of a block, inside of which a membrane, a rod and a switch are installed. Depending on the water heater model, the switch has one or two stages.

The single-stage mechanism is simpler, but has a big drawback. If the heater activation threshold is greater than the water pressure, it will not turn on. In a two-stage block with low pressure the first stage is turned on. If the fluid pressure increases, the second stage comes into operation. Regardless of the steps hydraulic system is unstable, and the temperature at the outlet of the tap is not constant.

• Electronic control works with sensors that transmit a signal to the processor. The system is capable of functioning in extreme operating conditions, when two or three water taps are used simultaneously. Because of this feature, electronic control is used on expensive pressure water heaters.

There are two types of electronic control. The simplest device is limited to keys that set only the water heating temperature. A more complex device allows you to control the temperature and flow of liquid. Electronic system sensors accurately monitor water heating, significantly saving energy.

Choose a water heater with electronically controlled It makes sense if hot water supply is provided at two or three points. It is more profitable to supply hot water to one shower or washbasin with a cheap water heater with hydraulic control.

Calculation of device power depending on water consumption

Its performance depends on the power of the water heater. If you choose a weak model, with a lot of analysis, the water will not have time to warm up. A large power reserve is also not in favor of the apartment owner. Excess energy consumption will result in large payments. Storage and flow-type water heaters are selected based on power that can fully provide hot water to all simultaneously switched on water points.

There is a formula to perform the calculation: V = 14.3 * W/(t2 – t1), where:

• V – water consumption at all water points connected to the flow-through heater;
• W – power of the heating element of the flow-through heater;
• t1 – temperature of cold water at the inlet of the flow-through heater;
• t2 is the temperature of the hot liquid at the outlet of the tap.

You can roughly select equipment designed to fully provide hot water to all points using the following parameters:

• for hand washing, the optimal flow rate is up to 4 l/min of liquid at a temperature of 38 o C;
• a shower requires up to 8 l/min of hot water flow at a temperature of 40 o C;
• V kitchen sink liquid is supplied at a temperature of up to 55 o C, and the flow rate is 5 l/min;
• A comfortable bath takes place in water at a temperature of 40 0 ​​C, the flow rate of which is 10 l/min.

The simplest calculation of the heating system power is performed based on the required hot water flow at one point. The estimated volume is multiplied by two. Let’s say that at the outlet of the tap you need to obtain a liquid flow rate of 8 l/min. Multiplying the indicator by 2, we get the power of this device - 16 kW. The reverse calculation is done in the same way if the water heater has already been purchased. For a model with a power of 8 kW, the maximum hot water flow rate is 4 l/min.

If the calculation of the power of an instantaneous water heater is carried out for several mixers, then the emphasis is placed on the point where a larger volume of hot water is expected.

In houses with a large number of people living, large quantities of hot water can be simultaneously carried out at several points. For such a system, the calculation is carried out similarly, only the finished result is increased by 1.5 times.

Security measures

Instantaneous and storage electric water heaters require the same safety measures. Two important points that cannot be ignored:

• Grounding installation. The heating element is in direct contact with water. In the event of an insulation breakdown, a current passes through the water, which is fatal to humans. Grounding takes the hit.
• Water heaters with reinforced heating element insulation belong to high class electrical safety. Such devices can be installed without grounding, but the supply wiring is connected through an RCD. In the event of an emergency situation associated with current leakage, the protection will disconnect the circuit. The power supply to the water heater will stop.

In addition to important safety points, it is worth paying attention to the convenience of controlling the operating modes of the water heater. Their work should be understandable to all family members.

It is better to give preference to a flow-through device equipped with a water filter and overheating protection. The indicator for turning on and the temperature of the flow through is a small thing, but they let the user know how well the water heater is working.

Review of popular manufacturers and models

Manufacturers offer a large selection of instantaneous water heaters, differing in design, purpose and technical characteristics.

Timberk WHEL-3 OS

The non-pressure type model is suitable for a summer residence. The device is sensitive to the temperature of the incoming water. The manufacturer does not recommend supplying ice liquid directly from the well. It is desirable that the incoming water warms up to at least +15 o C. A safety valve is built inside the water heater, as well as protection against overheating. The power of the heating element is 3.5 kW. The set includes a shower head with a flexible hose. Productivity – 1.9 l/min.

Electrolux NPX6 Aquatronic Digital

The Swedish water heater is equipped with an electronic control unit with a touch screen. The device has protection against overheating and is compact. However, weak power and low productivity make it possible to use flow heater in a country house or in an apartment where 1-2 people live. A heating element with a power of 5.7 kW is capable of providing hot water flow up to 2.8 l/min.

Timberk WHE 5.5 XTR H1

A budget, but quite productive model that can provide hot water for a shower or sink. Inside the water heater there is a heating element with a power of 5.5 kW. Hot water consumption does not exceed 3.85 l/min. Installation of the heater requires mandatory grounding.

When choosing an instantaneous water heater, it is important to make the correct calculations and select a device with the optimal technical characteristics. They pay attention to the manufacturer at the last moment.

Flow-through household heating systems are distinguished by a simple control system and compact dimensions, since they do not require an additional tank for operation. The operating process consists of circulating water through a tubular heating element, where it is instantly heated to a certain temperature. Most the best way equip the house with an uninterrupted supply of warm water - install instantaneous water heaters for the apartment.

Brief technical specifications

Modern equipment is divided into several types, which involve the use different ways liquid heating:

• The heating coil or heating element operates on the basis of electricity;
• Work is carried out through the use gas burner;
• Operation occurs thanks to a heat exchanger through which water passes and reaches the desired temperature.

Electrical devices are considered the easiest to use - they are very easy to connect, work without problems, but consume a lot of electricity. The average power of such a heater is 3-5 kW.

The most economical ones are gas, but they require connecting the house to gas networks and are installed exclusively by specialists with a clearance category.

VIDEO: How to choose a water heater? Which one is better to buy?

Rules for choosing a flow apparatus

The problem of how to choose an instantaneous water heater for an apartment must be approached as responsibly as possible. To avoid making a mistake in your choice, you should answer several questions.

1. What energy source will the device operate on?

Today there are two types of energy sources: gas or electricity. If the house is heated by a gas boiler, you can generally purchase a double-circuit boiler, which both heats and provides hot water. Both circuits are autonomous and are not interconnected in operation.

In the absence of gas, electric instantaneous boilers are chosen, which are installed in close proximity to the water intake point - on the tap, on or instead of the shower, near the sink as an additional source of hot water, etc. The performance of the device depends on the type installed wires. For example, in old buildings, panels are designed for a maximum current supply of up to 16A. They can withstand equipment power of no more than 3.5 kW. Later buildings have shields that can withstand 32-40 A, in this case you can use a powerful device with a value of up to 8 kW.

Regardless of the quality of the wiring and the year of construction during installation electrical device You should additionally run a separate wire running from the unit to the electric machine.

1. Type of equipment

There are two types of equipment: non-pressure and pressure. The second option is more suitable for the apartment, which during the installation process is mounted directly on the hot and cold water pipes. The device has the ability to supply hot water to several faucets at once.

However, if the purpose of purchasing a device is to seasonally shut off the centralized water supply, you should choose a non-pressure option. It often has less power and comes with additional shower heads. This unit is intended to heat the coolant only in the summer; in winter it is not able to cope effectively with the work.

1. Equipment performance

Here, to a greater extent, you need to navigate what water consumption is required for domestic purposes, taking into account the incoming and outgoing temperature conditions. It is these parameters that are recorded in the passport of the instantaneous water heater for the apartment.

To calculate, place a container with a known volume under the tap and time it for one minute. The amount accumulated over a given period of time is the main parameter for choosing a device.

The temperature of the incoming water is of fundamental importance. If it is at 14°C or higher, the output will be the degrees declared by the manufacturer. The lower the incoming temperature, the correspondingly cooler it will be.

Experts recommend purchasing equipment from a well-known manufacturer. Since dubious products will significantly save investments, however, a little later, problems may arise with rapid breakdown of the unit and difficult to access parts.

Installing low-quality equipment in a house or apartment can lead not only to difficulties associated with its functioning, but also to a violation of the security of the entire property.

In order to figure out how to choose an instantaneous water heater for an apartment, you need to correctly assess the upcoming load. For a family of four people you will need a device with a power of 14-16 kW. The volume of water in this case will be 5-8 liters per minute, which is enough for 1-2 water intake points.

The maximum temperature should be at least 50°C, but keep in mind that in winter it may be 3-5°C lower at the outlet. Since we are talking about domestic use, the power supply must be designed for 220 V, frequency 20-30 Hz. If the house is private or there are regular voltage drops in the network, buy devices with a frequency of 30 Hz. If voltage stabilizers are installed, you can get by with 20 Hz.

Do not buy devices without overheat protection. The protection must be marked IP30.

As for probes, it is better to prefer anti-corrosion ones, but some manufacturers have already released a line of soapstone ones. Both types have proven themselves equally well in operation.

When the choice is made, be sure to ask the sales consultant for a certificate of quality conformity and do not forget about the warranty period.

Popular brands, models and reviews about them

As was already discussed a little earlier, the use of more powerful models is not advisable for an apartment, as with a private house the situation is different. Therefore, we will give examples of less productive units that occupy leading positions in the technical market.

Electric instantaneous water heater for kitchen Atmor Basic 3.5 kW

Power 3.5 kW and maximum flow liquids - up to 3 l/min. The budget version of the heating system is capable of producing a temperature range of up to 40 ° C, under one condition, if the liquid at the entrance to the device is not colder than 18 ° C. The estimated cost varies from 1000 to 1500 rubles.

The main complaints from users are frequent shutdowns and cold water “shooting” when turned on at high power.

Water heater Polaris Vega T 3.5

Power 5.5 kW and capacity - 4.3 liters. Thanks to its universal shape, the appliance can be mounted under a bathtub, washbasin or in a niche. The package includes a faucet and shower head.

In general, there are very few negative user reviews; the equipment is called good quality, which fully justifies its affordable cost - 2000 rubles.

Instantaneous water heater for apartments Cartridge PE-VN-220

It has an average cost of up to 2600 rubles. Power does not exceed 5 kW, flow rate - 5 l/min. The device involves the treatment of low quality water, therefore it is equipped with an additional protective layer that increases the service life of the equipment.

Electric instantaneous water heater Electrolux SMARTFIX 2.0 S (3.5 kW)

A very high-quality line of equipment, equipped with all necessary protective equipment. Average productivity is 3-4 liters. Power 5.5 kW. Very compact size, laconic design. They are conveniently placed in niches. There is only one drawback - the price. On average, such equipment will cost 5,000 rubles.

IN modern models predominantly steatite heating elements are already provided, which even compared to anti-corrosion ones extends the service life. Maximum temperature 50°. Parameters - 220V, 20-30 Hz. Everything is done very high quality.

Instantaneous water heater Thermex System 1000 (wh)

Universal water heaters that are in demand among consumers, but at the same time have a number of complaints. First of all, this concerns the lack of gaskets under the thermostat. Limitation of the operating frequency to 25 Hertz, which can affect the operation of the equipment in case of voltage fluctuations in the network. It is advisable to immediately install a voltage stabilizer and not use the device at full power.

The advantages are thermal switches, high-quality regulators and versatility. Most have 3 operating modes. Price - 5500-6000 rub.

How to install the device?

First of all, it is necessary to install the device directly on the wall, and then connect it to the general water supply system.

Next, a power connection is required. Even if the instantaneous water heater has a low power, it should still have a separate electrical wiring. This process must be carried out based on the fact that not every electric meter is able to withstand a large current load.

The wiring diameter and type of automation are selected based on technical features water heater and meter. It is important to remember that the standard outlet through which you plan to connect equipment must have a grounding element.

After this, the device is connected to the water supply directly to the tap or the shower head is replaced, depending on the configuration and type of device.

VIDEO: Instantaneous water heater. Schematic diagram connections

Hot water for modern man is not a luxury at all. He feels an urgent need for it. In this regard, many apartment owners who centralized system water supply cannot ensure the supply of hot water around the clock and throughout the year, sooner or later they begin to think about purchasing a device such as a water heater.

The modern market of household appliances offers many models. However, not everyone can answer the question of which water heater is best to buy for an apartment. Let's try to figure it out.

Electricity or gas?

Which water heater is better to buy for an apartment? Reviews from experts and consumers confirm that when choosing, it is necessary to determine which energy source will be used to operate this device. Depending on what will be supplied to heat the water, the units are divided into two types. They can be gas or electric.

Which water heater is better to buy for an apartment? Consumer reviews indicate that gas appliances are cheaper to operate. At first glance, it may seem that this option would be the most acceptable for apartment owners. However, this is not quite true. Cheaper water heater gas type will bring the water to the set temperature very slowly. In addition, to install this device, you will need to attract the help of specialists from the gas service. They will charge a fee for laying additional pipes and ventilation ducts. The end result is a pretty decent amount.

They are also quite expensive for heating an impressive volume of water. In addition, there is no point in placing such units in a small apartment.

As for electric water heaters, all models of this type of device operate from the network:

220 volts (single-phase);
- (three-phase).

Which water heater is better to buy for an apartment? User reviews indicate that the most powerful devices are connected to a 380 volt network. Similar devices They heat water very quickly, but at the same time their cost is quite high. In addition, such units will require powerful wiring, and three-phase networks are not available everywhere. In addition, for old city apartments it is not recommended to choose a water heater that consumes more than 5 kW. Otherwise, the network will simply be overloaded.

If the apartment is located in a new building, then the owner is given the opportunity to choose a more powerful device. How many kilowatts to count on can be determined according to the existing project.

Which water heater is better to buy for an apartment? Reviews from many people who have decided to purchase this useful device indicate that they are afraid of a sharp increase in electricity bills. But there is no need to worry about this. Electric water heaters, which have average volume and power indicators, cost their owners no more than a couple of hundred rubles per month if they are constantly running.

Installation location

Which water heater is best to buy for an apartment must be decided not only based on the type of energy it consumes. Users note that if the project does not initially provide for the place in which the device should be installed, it is quite difficult to find free space. In addition, the entire structure, together with water, has an impressive weight, which makes it difficult to attach it to non-permanent walls. All this is taken into account by modern manufacturers who produce wall-mounted and floor-mounted devices.

If you decide to purchase a water heater for your apartment, which of these two types is better? Wall-mounted units save space. Floor-standing water heaters are securely installed on the floor and do not pose the risk of collapse even with large volumes of water in them.

When choosing wall version Before purchasing, you will need to measure the width and height of the free space with a tape measure. This will allow you to find out the permissible dimensions of the water heater and how best to position it.

Wall-mounted units are mounted either horizontally or vertically. At the same time, the manufacturer produces universal devices that can be positioned depending on the available space, as well as special models with one or another configuration.

Today, the manufacturer also offers water heaters that can be installed directly under the sink. However, their main disadvantage is the limited amount of heated liquid.

Volume

This is one of the important parameters that should also be taken into account when choosing a water heater. In order to determine the required tank volume, you will need to take into account the required dimensions of the unit, the number of connection points, as well as the number of family members. For those owners who purchase a water heater only for washing dishes, a tank volume of 10-30 liters is sufficient. But to take a shower you will need more water (from 50 to 100 liters). If family members are used to taking a bath, then the maximum volume of the tank is required (up to 150 l).

Device type

Water heaters are of the following types:

Cumulative;
- flow-through;
- cumulative indirect heating.

Let's take a closer look at them.

Storage water heaters

Units of this type are the most popular. In such devices, the entire volume of water in the tank is heated. Storage water heaters bring the temperature of the liquid to a certain limit, and then maintain it at a given level. In this regard, such units are the most economical.

Which storage water heater Is it better to buy for an apartment? One that will allow you to use the required volume of water, because if it is completely consumed, you will have to wait again for the heating of a new portion of the liquid. In this regard, when choosing a model, it is necessary to calculate the size of the tank.

Instantaneous water heater

As for this type of heater, it is smaller in size. However, it is worth keeping in mind that this device does not allow the water to warm up enough and be very hot. Moreover, such units have more than storage units. However, if you consider that heating occurs only at those moments when the owners go to the shower or wash dishes, then the costs will not be very high.

But for apartments with old wiring, it is better not to buy instantaneous water heaters. After all, previously designed networks will not be able to withstand the installation of units whose average power exceeds 6 kW.

Which one is better to buy for an apartment? To select a device, you will need to evaluate the load that will be placed on the unit.

What power water heater is best to buy for an apartment? In the case where up to three people will use the water, it should be approximately 12 kW. This power will allow you to keep the performance parameter at a level of up to three liters of hot water for one minute. Wherein Maximum temperature the feed will be at least fifty degrees.

How to determine which instantaneous water heaters are best for an apartment?

The choice of such a unit is also based on the available parameters of its power supply. As a rule, water heaters of this type have it at 220 V with a frequency of 20 to 30 Hz. However, in cases where homes have problems in the form of power surges, the 30 Hz model should be purchased.

Storage water heaters with indirect heating

According to user reviews, such units are the most economical. The fact is that their work is carried out while simultaneously turning on a single-circuit heating boiler. In winter, such water heaters use the same energy that is intended for heating.

The main disadvantage of such a device is its difficult installation, providing for insertion into heating system. But if we consider the advantages of using this unit, it is worth noting that there is no need to connect it to the electrical network.

Indirect heating devices are installed, as a rule, in urban private or country houses, which have autonomous system heating.

Performance and Power

Which electric water heater is better to buy for an apartment? For selection optimal option The device must be looked at in the instructions for its performance, which directly depends on the power.

The strongest dependence of these indicators is observed in instantaneous water heaters, as mentioned above. In such units, for comfortable consumption of hot water, the power must be above 12 kW. In storage devices, a power of 2 kW is sufficient. The performance of this type of device will be at a sufficient level.

heating elements

When deciding on choosing a heater, you also need to pay attention to this parameter. Manufacturers offer models that have either one or two heating elements.

In the first case, water heaters use energy, which is controlled automatically. At the same time, to maintain the set temperature level, the device switches on the economy mode. After complete use of water in such units, further heating is carried out slowly.

Which water heater is better to buy for an apartment? For high hot water flows, models with two heating elements are the most preferable option.

Other selection criteria

Modern water heating devices are characterized by low heat loss. This indicator is only a few degrees during the day. This becomes possible thanks to the good thermal insulation of the tanks, for which polyurethane foam, fiberglass or polystyrene foam are used.

When choosing a water heater, you can compare heat loss rates for different models. To do this, you need to clarify this parameter in the instructions supplied with the device.

Equally important is the service life of the device. On average, it is 5 years, but in the best case, the manufacturer will indicate a period of up to 7 years. This parameter characterizes the reliability of the water heater. After all, the service life will directly depend on the material used for the tank, as well as on the quality of the anti-corrosion coating applied.

When buying a water heater, you need to focus on its price. It will be directly dependent on all the above parameters, as well as the mark of the device.

Manufacturers

Which brand of water heater is best to buy for an apartment? Inexpensive, but at the same time reliable devices are offered to consumers by Ariston. Units produced by the Swedish company Electrolux are affordable. This manufacturer is considered a leader in the gas water heating appliances segment. Electrolux electrical units are of high quality, and at the same time they are just as expensive as Bosh brand products.

Cheap, but at the same time quite high-quality heaters offered by Thermex are becoming increasingly popular on the market. Devices from manufacturers such as Drazice and Gorenje also receive good user reviews. What brand of water heater is better to buy for an apartment if you need to install a compact device? In this segment, the leader among manufacturers is AEG. Below are the most popular water heater models.

Ariston ABS BLU R 80V

This water heater stands out among other models due to its minimal heat loss. The device is very convenient in everyday use thanks to the lower water supply provided in its design. The main material for the manufacture of the device tank is hardened steel. At the same time, the manufacturer reliably protected the device body from heat loss by covering it with an aluminum plate.

Users note that the water in such a unit reaches the maximum heating temperature in almost 3-4 hours. Consumers are also pleased with the spacious tank of 80 liters, which can be easily mounted on the wall. During operation, it is convenient for owners to monitor the temperature of the water in the tank, which is displayed on a special thermometer.

AEG RMC 75

According to user reviews, this instantaneous water heater is very easy to install. In addition, the device is characterized by productivity and practicality of use.

The instantaneous water heater of this model is capable of bringing 4-5 liters of water to the desired temperature in just one minute, while consuming 7.5 kW. According to user reviews, the model is perfect for simultaneous connection to several water intake points.

The design of the device provides for the installation of a copper heating element. It has an operation indication and mechanics. Users note that the model has reliable protection from overheating, as well as from water getting into it

This high-quality device receives many positive reviews due to its compactness, as well as stability and durability.

Timberk SWH RS1 80 V

This model, according to consumer reviews, is quite productive, protected and stylish. The manufacturer offers users a device with excellent performance parameters and a pleasant design. The tank volume of this model is 80 liters. It heats up the water in just two hours. In this case, the device consumes 2 kW.