Electric Pool Heater Sizing

Hayward s advanced line of heaters delivers the ultimate in comfort and energy efficiency while maintaining ideal pool spa water temperature all season long.

Electric pool heater sizing.

Hayward electric spa heaters contain all of the sophisticated features and capabilities of heaters twice their size. 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. To heat in normal summer conditions when ambient air temperature average 70 f in a 24 hour period.

For example if you re working on a pool with an attached hot tub most installers would suggest a 400 000 btu heater which is the largest available in most residential applications. An undersized pool heater will heat too slowly and a severely oversized pool heater may end up unnecessarily driving up the cost of this big investment. 20 000 gallons will need a 100 000 btu heater. Rules for sizing your heat pump pool heater size at 4 btu s per gallon or 1 btu per litre of water.

General rule of thumb with heaters. For example take a look at this large 11 kilowatt electric water heater. Bigger is better but to a certain point. Heater size in btu hr.

Therefore if you ve got 15 000 gallons of water you ll require a 75 000 heat pump. A 400k btu heater will heat a pool twice as fast as a 200k btu heater and burn gas twice as fast. Select to compare. Sizing a heater properly means your pool water will heat to your desired temperature in the desired timeframe.

Heatpro heat pump high. This heater would require up to 60 amps of electrical draw and can output a maximum of 37 000 btu s. Heating up a pool versus a pool and spa combination requires less btu power. Heating up a pool versus a pool spa combination requires less btu power.

What size pool heater is a simple question to which there is no simple answer. 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. Size at 5 btu s per gallon or 1 3 to 1 5 btu s per litre of water. Usually if you have a pool and spa combination i recommend purchasing 30 higher btu for example going from a 300k to a 400k.

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.