Tired of hot water outages? Then install the instantaneous water heater. If residents of apartments, this problem applies only in the summer, then for a private house and cottage it is constant. In the article we will talk about the features of choice, give examples of models and customer reviews.
The principle of operation of the heater
Flow-type boilers are perfect for those with limited space in the room. The compact case fits into any corner, unlike bulky storage models.
The principle of operation and the device are simple. Inside the case there is a flowing heater in the flask. The flow passes through the heater, instantly reaching the desired temperature. You will always get hot water in any quantity.
The equipment can be designed for one or several points of sampling. Today they produce small water heaters with a shower hose or faucet, which are perfect for summer cottages.
Advantages and disadvantages of technology
Domestic heaters for the home have such advantages:
- Compact body.
- Electricity consumption occurs only when the device is turned on. Accumulators, on the other hand, constantly consume electricity to maintain temperature.
- Water consumption does not depend on the volume of the tank.
- Lower cost compared to funded.
Of the shortcomings emit a large energy consumption: from 3 to 24 kW. Not all wiring is ready to withstand such an installation, so sometimes thick cable laying is required.
The quality of heating depends on the service points. If you run several at the same time (for example, on a faucet and on a shower), the water will not have time to warm up normally or will flow in a thin stream.
Low-power models will work fine only in the warm season, since they will be able to heat the water by 25 degrees to the maximum. Therefore, they are recommended to be used in the country or in a country house.
Types of flowing boilers
In order to choose the best device for the apartment, you need to understand the features of the work. Grooves are divided into:
- Pressure They are installed on several sampling points, cut into hot and cold pipelines. The quality of work depends on the pressure in the line. The equipment is designed for 3-12 kW connected to a single-phase network. At 3-30 kW - in three-phase.
- Pressureless. They function not from the pressure and strength of running water, but from a connected tap. Usually these are small devices that are locally connected to the fence point. It is enough to connect them to the network and set the temperature. As soon as you open the tap, work will begin. Close - will stop.
Also, the technique varies in type of power: electric and gas. The former are considered safer and easier to install: you can connect them without the help of specialists.
Gas can not be installed independently: the organization of the boiler pipe, ventilation. The advantage of gas is only in low cost.
Features of choice
Before you go shopping, you need to decide:
- How many points will the technician serve.
- How much water you will spend.
- What indicators should the boiler have in order to ensure sufficient heating.
In the store, check with the seller for the following details:
- The complexity of installation. Can I make the connection myself, or will I need the help of a specialist?
- If the installation is performed by a store employee, is the service free? Possibly a discount.
- Warranty Terms.
Make arrangements for warranty repairs in advance. Sometimes a ticket is issued as expected, but as soon as you ask for help, it turns out that the service is in another city or there are no spare parts.
Calculation of the power of the flow storage heater
To determine the indicators, you need to understand how much your family has.
How much hot water a heater can provide per unit of time depends on power. You can find this out by the formula:
P = Q × (t1 - t2) × 0.073
R - this is the boiler power indicated by the manufacturer.
Q - desired fluid duct.
t1 - required heating temperature.
t2 — inlet water temperature.
0,073 — correction factor.
Consider the costs of not only the purchase of equipment, but also its maintenance. The more power, the more energy the device will consume. You can do without formulas and schemes: the instruction manual always indicates the purpose of the water heater.
For example:
- Devices with a consumption of 8 kW or more are recommended for summer cottages. They provide heating up to 40-50 degrees.
- At least 20 kilowatts will be needed to fully service the house and apartment in several places of the fence.
- 3-4 kW are designed for use in the summer, since the incoming water must be at least 15 degrees.
If you want to constantly use a boiler, choose a device from 6 kW or more.
Type of control, modes, options
By type of control, instantaneous water heaters are:
- Hydraulic— the same as mechanical control. These are inexpensive models. However, they cannot maintain a constant temperature and may not turn on at low pressure.
- Electronic. They allow you to set the desired mode, in accordance with it to regulate the pressure, save electricity.
Electronically controlled devices are significantly higher in price than mechanical ones. But it’s worth overpaying for them, because they will provide usability for many years.
Of the additional options, the heater may have:
- Adjustment of modes.
- Indication during operation and during shutdown.
- Protection against overheating (thermal protection), corrosion and scale (magnesium anode), high pressure (safety valve).
More expensive models can be connected to solar panels, have a lock from accidental pressing, the choice of shower mode.
It is worth paying attention to:
- To the heater. It is advisable that he be in a protective flask that will save from scale. The remaining parts must be made of copper or brass.
- Body material. Experts recommend giving preference to enameled, copper and polypropylene. They are most resistant to corrosion and durable.
- Complete set. Includes power cord with plug, shower head (depending on model), fittings.
Most often, buyers give preference to the brands of "Termex", "Electrolux", "Ariston", Zanussi with a small capacity, because they are easy to use. Those who spend a lot of water every day install storage boilers. During operation, they are cheaper. But if you decide to buy a protochnik, we have compiled a list of popular models.
Rating of flowing heaters
Pay attention to the price, specifications, functions and installation method.
Electrolux NP6 Aquatronic
Flowing electric device "Electrolux". The case is made of durable plastic. Due to its compact size (191x141x85 mm) and top water supply, the device can be installed in a cabinet or under the sink. The NP6 Aquatronic model is a pressure type, so it can provide several intake points.
TEN is made of stainless steel. Its power is 5.7 kW. Water heater productivity - 2,8 l / min. Built-in overheat protection, weight - only 1.42 kg.
Price - from 5 000 rubles.
Andrei
I decided to install a heater with the approach of seasonal shutdowns. As the space in the bathroom is limited, the choice fell on the Electrolux NP6 Aquatronic. I use it only during the summer outages. The device itself is about half the size of an A4 sheet, the case is durable, but the cord for connecting is short. I am satisfied with the work of the equipment, there is constant hot water. When the tap is opened, the heater turns on; when closed, it turns off. Very comfortably.
Thermex Tip 350 (combi) Prime
The model is equipped with a faucet and shower head. Suitable for periodic use, since the flow in cold weather is less. Maximum performance: +60 degrees. Pressureless type, can serve one point.
Features:
- Two-stage protection system. The pressure switch does not allow starting the equipment without water, and the thermal protection prevents overheating.
- The heat exchanger is made of copper.
- The case is made of heat-resistant plastic (it definitely does not threaten corrosion).
Consumption is 3.5 kilowatts. Case dimensions: 19x30x10 cm.
Cost - from 4 000 rubles.
Yuri
Great for temporary use. Used in order to replace the time off the water. Heats up normally, the connection is easy, managed in a few minutes. In the presence of all gaskets, fastenings are clamped by hand. Fully justifies its value.
Bosch Tronic Heat 3000/3500
The equipment can be used as a full-fledged boiler for heating, so the cost of the device is quite high. But Trronic Heat fully justifies it:
- Compact and stylish case with dimensions of 41.6 × 71.2 × 30 cm.
- Choosing a model 3000, you get a device without a tank and pump. It will serve to heat water at points.
- Choosing option 3500, you get a full-fledged heat source. Equipped with a tank (7 liters) and a three-speed pump.
There is a possibility of regulation from 4 to 24 kW. The maximum heating reaches 85 ° C. Equipped with a self-diagnosis system. Electronic control with display.
Price - from 47 000 rubles.
Atmor In-Line 5 3.5
Atmore pressure device with a capacity of 5 kilowatts and a capacity of 4 liters per minute. Case dimensions: 31.7 × 30.5 × 12.5 cm. The equipment can be installed in a cabinet, a hidden niche, a curbstone. Easy to use: you do not need to constantly turn on and off the device. It is enough to open the faucet - the heating will start, close it - will stop. The rest of the time electricity is not wasted.
Built-in protection against switching on without pressure, as well as from overheating. Two heating elements can be switched on in turn. The maximum performance is 65 degrees.
Cost - from 3 000 rubles.
Victor
Has worked without problems for 4 years. When installing, I had to lay separate wiring, it is a pity that Atmor does not produce less powerful models. It is very convenient to use, it is not scary to leave it on and go on business. There is the possibility of blocking the water at the entrance. I recommend to buy.
EVAN EPVN
These are high-speed heaters that can be used in everyday life and in production. This technique belongs to the Standard-Economy class. Consumes 7.5 kW, productivity is 3 liters per minute. Mechanical control.
EVAN EPVN provides:
- Instant heating.
- Significant volumes for multiple sampling points.
- Stable operation even with a network deviation of 10%.
- Economical energy consumption, because it consumes it only when turned on.
Case dimensions: 64.5x25x18 cm.
Price - from 11 000 rubles.
Anatoly
If possible, I would buy more power, but for household purposes only such models are produced. It warms normally, but not as good as expected. To take a shower, you need to adjust the pressure and temperature. In the process, it is necessary to gradually add pressure so that the flow does not become cold. After seven minutes, the water is barely warm. There is enough time for you to leave the bathroom so that the water warms up for the next person. More suitable for installation in the kitchen.
AEG MP 8
Multi-point pressure device. Provides productivity up to 4.1 liters per minute. Power - 8 kW. TEN and its flask are made of copper. Turning on / off occurs when adjusting the mixer. The stronger the flow, the less heat.
Safety valve, thermal protection provided. Eyeliner bottom. The size of the device is 21.2x36x9.3 cm. Warranty for 6 years.
The cost is from 17,000 rubles.
Valentine
Do not listen to those who claim that you can use such a groomer in winter. This is all a marketing ploy. At an inlet temperature of +15 degrees, the device will bring it to +40. This is normal in the summer. If in the cold season the indicator will be +3 at the entrance, it is unlikely that you will be satisfied with washing at + 28 ° C. Therefore, I recommend it only for periodic use. I have been using AEG for 10 years.
Stiebel DHE 18/21/24 Sli
The closed model is equipped with a microprocessor. Electronic control and a display on the panel allow you to use with convenience. Indicators are adjustable from +20 to +60 degrees. Supports preset tinctures. You can set the contrast shower. Provides protection against air traffic jams.
Throughput - 12.3 l / min. Requires connection to a three-phase network 380 V (24 kilowatts). Pressure - from 1 to 10 Atm. Dimensions - 20x47x13.8 cm.
Price - from 60 000 rubles.
Timberk WHE XTL
The device is connected to a three-phase network 380 V. Power - 12 kW. The heating element consists of five spirals, which are switched alternately, stepwise. Built-in automatic protection against overheating and high pressure.
Patency is 8 liters per minute. Electronic control with display. Dimensions: 26x46x12.8 cm.
The cost is from 14,000 rubles.
Ekaterina
A powerful device that allows you to quickly heat water. The pressure is enough to wash normally. You can use it immediately from two points - in the bathroom and kitchen, it works fine. Pleased with the choice.
Polaris ORION 3.5 S
Heater "Polaris" is suitable for use during the shutdown period of hot water. Allows you to instantly heat the cold to +60 degrees. Shower head included. Quartz heater has a high efficiency - 98%, it is not afraid of scale.
The mechanical regulator allows you to set three modes: 1, 2.5, 3.5 kW. Thermal protection disables the operation of the heater if the indicators exceed the norm. You cannot mistakenly start equipment without water; it is blocked.
Price - from 2000 rubles.
Oasis Glass 20VG
Gas flowing device "Oasis". Thermal power - 20 kilowatts. The flow throughput is 10 liters per minute. The stylish design of the body will decorate your kitchen or bathroom.
Features:
- It works independently of electricity.
- The display shows the set parameters as well as the heating.
- Electronic ignition when opening the mixer.
- The switch "winter-summer" allows to reduce fuel consumption.
- Special control cuts off the gas supply when extinguishing the flame.
- The heat exchanger is protected against overheating.
- If there is poor draft in the chimney, the sensor switches off the device.
Dimensions: 34x59x14.5 cm. Professional installation required.
Cost from - 5 000 rubles.
Alexandra
Liked the design and cost. Bought. During installation, the gasman sighed heavily. Outside, everything is in order, and inside the filling is of poor quality. Naughty when turned on: it turns on, then no. Heating is quick, but replacement is difficult to find.
CLAGE CEX 9
German-made indoor water heater. The power of the device can be regulated from 6.6 to 8.8 kW. This means that installation requires reliable wiring. Thanks to its high power, the Clage Cex 9 delivers high performance up to 5 l / min. You can comfortably take a shower while another is washing the dishes.
The boiler turns on automatically, just open the mixer. Using electronic control with a display, you can set the temperature from 20 ° C to 55 ° C. Indicators are fixed in a given position. Spiral heater is resistant to the formation of limescale.
Additional option: control using the remote control. Case dimensions: 18 × 29.4 × 11 cm. Weight - 2.7 kg.
Cost - from 21 000 rubles.
Paul
Before that, there was a drive, but it was taken to the country. I thought about buying a new device for a long time, I wanted to save space. German Clage appliances are more expensive than other heaters, but have never regretted a purchase. The German assembly is immediately visible: everything is firmly and reliably assembled. Even the installer was satisfied, quickly completed the installation. The instructions detail settings, energy is consumed only during operation. The main thing - now no one beats his head against the body, it takes up a minimum of space.
After reading our recommendations, you can make the right choice for your home and family.