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Last updated: 31 July 2019

Heat Pump Water Heater

What Is a Heat Pump Water Heater?

In general, heat pumps use the electrical energy to distribute the heat from the outside environment into your house, they don’t actually create heat. This makes heat pump systems much more efficient than conventional electric or gas water heaters.

Heat pump water heaters (HPWH) use energy from the outside air or ground in order to heat water, which is gathered in an insulated hot water tank. The productivity you should get from a heat pump water heater relies on the quality of the system, the calibre of the installation, the average temperatures of your climate and the positioning of the compressor unit.

There are two distinct types of heat pump water heaters:

Split systems - generally, the compressor unit is situated outside, while the hot water tank is inside. However, the tank could also be placed outside your home independent from the compressor. If you already own a hot water tank you don’t need to buy a new one.

All-in-one units - both the compressor and the water tank are placed together and the whole system is usually installed outside.

Why Should You Use Heat Pump Water Heaters?

A well-designed and installed water heater use less energy than ordinary electric cylinders. Heat pump water heaters can work in places where solar water heaters fail due to the fact that they don’t need a lot of contact with the sun, like the south side of hills. If you choose the proper heat pump water system it can also give you “central heating”. They do so by pumping warm water from the tank around a system of under-floor heating pipes. Other heat pump systems can also be used to heat up a hot tub, a spa or a swimming pool at a better cost than a regular electric heater.


How Do Heat Pump Water Heaters Work?

As mentioned above, heat pump water heaters use electricity to move heat from the outside to the inside instead of generating heat directly. Hence, they are two or even three times more energy-efficient than conventional electric resistance water heaters. In order to move the heat, these heat pumps work like a refrigerator in reverse.

Heat pump water heaters need the installation to be done in locations that remain in the range of 4.4-32.2 degrees celsius all year-round and be granted at least 28.3 cubic meters of air space around the exact water heater. The cool air exhaust can be depleted into the rooms or outdoors, but it is best to install them in a place with excess heat, for example, a furnace room.

Heat pump water heaters cannot operate appropriately in a cold environment. They have the tendency to cool the spaces they are in. Also, you can install an air-source heat pump system that combines water heating, cooling and heating in general. This type of combination systems pulls the heat indoors from the air outside during the winter, while in the summer it is done from the indoor air. As a result of removing the heat from the air, any prototype of air-source heat pump system works much more efficiently in a warm climate.

The proper installation relies on many aspects. Some of these factors include fuel type, safety issues, climate and local building code requirements. Thus, it is recommended that you have a qualified plumbing and heating contractor or even a geothermal heat pump system installer/designer that can install your heat pump at proper standards.

If you wish the find the best solutions for your home and if it's worth buying a heat pump in the UK try for more useful information and professional assistance in finding the perfect heating system for you.

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