An electric heater for your pool draws outside air in and circulates this air through an outer evaporator air coil. The liquid refrigerant within the evaporator coil absorbs the heat from the outside air and transforms it into a gas. The warm gas in the coil passes through the compressor where heat is increased.

What is best way to heat a pool?

If you want an energy-efficient way to heat your pool, consider using a heat pump pool heater in mild climates. Solar water heaters are cost competitive with other types of water heaters and have low annual operating costs.

Can a regular pool be heated?

Gas pool heaters for swimming pools can sell for anywhere in the range of $1000 to $3000, for heaters with energy output of 100K-500K BTU. Gas pool heaters are the fastest way to heat a pool or spa.