Electric Pool Heater Sizing

Heating up a pool versus a pool spa combination requires less btu power.

Electric pool heater sizing.

To heat in normal summer conditions when ambient air temperature average 70 f in a 24 hour period. Select to compare. Usually if you have a pool and spa combination i recommend purchasing 30 higher btu for example going from a 300k to a 400k. This heater would require up to 60 amps of electrical draw and can output a maximum of 37 000 btu s.

Therefore if you ve got 15 000 gallons of water you ll require a 75 000 heat pump. 60 amps is a huge electrical draw. It s usually a matter of picking a model you ve used in similar applications. Sizing a heater properly means your pool water will heat to your desired temperature in the desired timeframe.

It depends on factors like how you will use the pool heater and pool location. For example take a look at this large 11 kilowatt electric water heater. Hayward electric spa heaters contain all of the sophisticated features and capabilities of heaters twice their size. General rule of thumb with heaters.

A 400k btu heater will roughly heat your pool twice as fast as a 200k btu heater but it also burns gas twice as fast. 20 000 gallons will need a 100 000 btu heater. Heatpro heat pump high. What size pool heater is a simple question to which there is no simple answer.

Heating up a pool versus a pool and spa combination requires less btu power. Hayward s advanced line of heaters delivers the ultimate in comfort and energy efficiency while maintaining ideal pool spa water temperature all season long. Surface area x temperature difference x 12 where surface area is the area of the pool in square feet temperature difference is the result of desired pool temperature current pool temperature and 12 is our constant number based on the assumption that wind speed is around 3 5 miles per hour. A 400k btu heater will heat a pool twice as fast as a 200k btu heater and burn gas twice as fast.

Heater size in btu hr. Size at 5 btu s per gallon or 1 3 to 1 5 btu s per litre of water. Bigger is better but to a certain point. According to pool center the general rule for knowing the size of the heat pump you need for your pool is 50 000 btu pool heater for 10 000 gallons of water.

For something as large as a swimming pool even smaller ones electric element heaters are not ideal.