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Most larger heat pumps have a chiller feature option available, this is possible from the manufacturer installing an additional valve inside that reverses the freon.
We found this great video discussing the 3.
Water from your pool passes through your heat pump, just like a gas or solar heater. The heat is created by a fan that takes the outside air and directs it over an evaporator coil. There is liquid refrigerant inside the coil that absorbs the heat from the air and turns into a gas.
The warm gas heads over to a compressor which increases the heat, then make its way through a condenser. The condenser is what takes that hot gas and adds it to your pool water.
As the hot gas passes back through the condenser, it transforms back into a liquid and heads back to the evaporator to start the whole process again. Pretty cool, eh?
Gas pool heaters use natural gas or propane. Water passes through while a combustion chamber burns and warms the water before returning to the pool. In other words, the water passes through a burning hot tube then back to your pool.
Solar pool heaters work by pumping the water from your swimming pool to your filter, and partially diverting it through a group of solar collectors that warms the water before it goes back into the pool.
Millivolt means you have a small amount of gas that keeps a pilot light lit so that it’s always available to fire up while an electronic ignition lights the burners with a spark just like a gas grill.
We recommend going with an electric ignition so you don’t risk a gas leak and you end up using less fuel.
The type of fuel you use will depend on the availability and the price of fuel in your area. The good news is both types of heaters are the same price.
If your home has Natural Gas you can also use it to heat your pool. If you don’t, you will have to buy a large, ugly propane tank and install in your backyard, which will need to be filled up regularly. On the other hand, propane is 2 1/2 times more expensive than natural gas, depending on supply and demand.
There are 3 different types of pool heaters, Heat Pumps, Gas, and Solar. Pool heaters are sized using BTUs, which stands for British thermal unit. A BTU is the measured amount of heat created by a pool heater. Outputs range from 75,000 Btu to 500,000 Btu.