The heat pump water heater is a special system which uses electricity to power a condenser, that in turn extracts heat from the air and pumps it into water. It can be used for heating swimming pools, and has a much lower operating cost than a gas-based pool heater.

It sucks in air from the environment is around it, compresses it, and then uses a heat exchanger to transfer the heat from the compressed air into the water. If you ever studied physics, you may remember that air heats up as it is compressed, and the air is pumped out the system, much colder. This is a similar process to air conditioning, but in reverse. You can actually run your heat pump water heater in reverse to call the watered-down instead of eating up, but it's much more usually used to heat water.

The price of using a heat pump water heater is much much lower than using a gas powered water heater, because it only uses a small amount of electricity, compared to a large amount of expensive gas. Considering that this is such a cheap system to operate, is there any reason at all why people sometimes prefer to use gas powered systems? One reason why people sometimes prefer gas water heater systems is because gas heaters are a lot cheaper to install, and even though you can spend as much as $3000 a year to heat your pool with a gas heater, in the short term it actually is cheaper to use a gas powered system. After a few years, because of the lower operating costs, the heat pump becomes the cheaper option.

So if you consider that you are going to have your pool filled many years, and that you will be heating it all the time, you can see why a heat pump water heater is a cheaper option in the long run. However, in the colder times of year, it may not provide enough heat, as it is only able to recycle the heat that is already in the air. For this reason, you might want to install it alongside a gas powered pool heater, so that you can give it a boost when needed.

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