First of all, deal with the source of energy for the water heater. Some of them run on electricity, others use gas. If you have a gas stove in the kitchen there is all necessary flue systems, you might want to pay attention to the gas unit, the more that costs much cheaper.
The second caveat is your decision regarding the use of water. You can purchase a tankless heater or storage. In the first case, the cold water passes through the tubes of the heater and the output hot water. In the second case the tank is filled with water, and then heated. Accordingly, the hot water, if not used, is still in the tank in a heated condition.
When considering a purchase, you should take into account the dimensions of the room where it will be your heater. Flow devices are much smaller in size. They usually hang on the wall. Accumulative waterheaters take up much more space. In some cases, they even appropriate to allocate a separate room. They are both vertical (i.e. hung on the wall) and horizontal. Some models of horizontal machines can be equipped under the sink. But remember that in this case it needs to be with bottom connection.
Gas water heaters (instantaneous waterheaters) of power are divided into three groups: small (17-19 kW), medium (22-24 kW) and high (28-30 kW) of power. If you use hot water a lot and in different places, it makes sense to take the column more powerful. Pay attention to the way the ignition column: piezosurgery or electronic. More convenient for electronic, as in this case, you open the water – column-and-play. Sparkle is formed with the help of batteries or ministertaro.
Electric flowing water heater consumes a lot of power, because its task is to instantly heat the water. Making a choice in his favor, decide for what purpose you will need. Dishwashing and showering will fit the unit with power up to 8 kW. For hot tubs you better buy a more powerful device (13 kW). But to install such a water heater must be three-phase supply voltage 380 V, which in conventional homes is not provided, and therefore, this issue you have to solve with the experts.
Cumulative electro -heaters of water economical. For their operation requires a regular socket, not three-phase network. Hot water through the insulation lasts a long time, and so if you have a reduced rate for using electricity at night, then you can heat the water. Selection of size of tank depends on your needs. For a large family and a regular bath, its volume must be at least 120-150 liters.
When buying a boiler (gas and electric), pay special attention to its protective coating. Porcelain and enamel are cheaper and not subject to corrosion. But enamel is sensitive to temperature changes. Water heaters with tanks in stainless steel and with titanium coating is more expensive but more durable.
It is important to choose the device from the point of view of thermal insulation. The thicker insulating layer in the boiler, the better. Ask also and easy replacement of the magnesium anode (prevents corrosion inside the tank). What it is, the less frequently it will need to be replaced.
Well, if your boiler will be installed, in addition to the main, an additional thermostat. This increases the safety of the unit. Whatever you buy, don't be afraid to ask more about the properties of a device from the sellers and consult with experts. Only in this case you make a purchase that will not disappoint you.
How to choose a water heater for the house. Home " Engineering systems in the country. To begin with, what are different themselves give. Of the water supply system a country house (cottage) can be realized, depends on selecting the correct water heaters. The most simple things when using the water main. In this case, there are no restrictions.
Hot water at the cottage – the choice among different types and brands of water heaters. Want to have at the cottage hot water? So, it's time to think about installing a water heater. We will tell you about how to choose the right device according to your needs. Knowing your usual water consumption (l/min) multiplied by the number of minutes spent in the shower, you can determine how much warm water from the water heater you spend showering. Of course, choosing the parameters of the heater, it is necessary...
Advice 2 : The choice of heater is running water
Water heaters are useful appliances that can be installed in the apartments for a period of planned and emergency outages of hot water and in the suburban homes where they are part of the Autonomous water supply systems. The correct choice of heater can significantly reduce bills for electricity.
Types of heaters
Water heaters are storage and instantaneous types. Cumulative work as a boiler they consist of containers of large size (from 30 to 250 liters), which is water. This water is gradually heated by using a heating element to predetermined values and, if consumption is immediately updated, while its temperature is kept constant. Running the heater has small volume storage tanks, the water is heated almost instantaneously due to the large electrical power devices of this type.
The choice of a particular type of heating unit depends on the needs of the family in hot water. In the case when the house is inhabited permanently and the hot water is needed all the time, it would be economically feasible to use a cumulative electric heater. If you want to improve hot water supply in the country, where people come from time to time, it would be cheaper to install a tankless heater.
Tankless heaters – compact devices to set them in the shower or the bathroom will not require much space.
How to choose tankless water heater
The main working characteristics of this device, of course, is power, because it needs the heaters instantly heat cold water to a comfortable temperature of at least 35oC, water consumption should be about 2-3 liters per minute. Minimum power for this type of heater shall be 3 kW, but if the intention is simultaneous consumption of a large amount of hot water, you should choose a heater with a capacity of 20 to 27 kW.
Flow heaters as well as cumulative, have the capacity to heat water, but its volume is small – a few liters. Naturally, you should pay attention to the material from which it is made, it must be resistant to high temperatures and chemical substances contained in the water. Longer serve you heater, the capacity of which is inside covered with a layer of enamel or the one in which its manufacture has been used brass or propylene.
The apartments and cottages electric tankless heaters are installed only in case if the existing wiring can withstand such a powerful device.
In that case, when you want to use a long heater, you should pay a little extra and buy one that is protected from the formation of limescale on the heating the heating elements and the inner surface of the container. In such models usually there is an indicator, which signals the necessity of replacement of PETN.
In the case when you have to give supplied gas communication, it makes sense to choose a gas tankless heater, which, at current electricity rates will allow you to save.