At air temperatures too much below 50 degrees most swimming pool heat pumps become unable to add any significant heat to your pool.
Add a heater to an inground pool.
Position the solar pool heater where you set up your solar heater for your swimming pool determines how.
If using propane 2 to heat the pool it will cost about double that of natural gas.
Pool gallons x 8 33 x desired temperature rise 24 hours required btus.
This is not to be confused with a gas heater which burns gas or propane to create heat which is then transferred to the pool water passing through the heater.
While adding a pool heater requires an upfront investment it helps you maximize your investment by being able to use your pool for much more.
Add a solar heater to your pool step 1.
The best way to try to simplify pool heater sizing is this calculation.
If using a 400 000 btu unit it will be 4 therms per hour.
Natural gas usually costs between 0 80 and 1 10 per therm.
They are also more costly to purchase up front often twice the cost of a gas fired pool heater and because they utilize a mix of technologies they are similar to an air conditioner working in reverse to add.
Keep in mind that a gas heater will need a larger btu output because of efficiency.
Heat pumps pull in air from the outside and by use of coils and other instruments heats the air itself which then heats the pool water flowing through the pump.
A natural gas pool heater is likely to use about 1 therm per hour for a 100 000 btu unit.
Choose a solar heating kit the main considerations when choosing a solar heating kit are the size of your pool.