What Size Btu Heater Do I Need For My Pool

In fact a 175 000 btu heater could be used.

What size btu heater do i need for my pool. Heating up a pool versus a pool and spa combination requires less btu power. Heater size in btu hr. Use the following formula to get started. A heat pump with capacity of 130 000 btu hour will take about 48 hours to heat the 30 000 gallon 20 x 40 pool in the examples above and would need a cover to be able to maintain the temperature.

Similar to the above example when a pool owner asks about what size pool heater they should get most installers just pick their favorite heater that is between 200 000 btu and 350 000 btu knowing from experience that this will work on a pool approximately the size of the one in question. If you don t determine the proper size of heater you should be looking for you run the risk of your heater not effectively heating the space or overheating it causing the room to be either drafty or stuffy. Larger heaters will warm a pool faster and are slightly more energy efficient but of course they cost more. A simple question but there is no simple answer.

This figure represents the heater output necessary to heat the pool to the desired temperature in 24 hours. Degree rise expectations based on pool size and heater size. Posted on september 7 2011 by john february 19 2018. What size pool heater do i need.

How to size a pool heater. 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. We might suggest stopping now and giving our professionals a call at 800 772 0467 a pool heater recommendation is something our pool experts take very seriously. Multiply that result by 12 to arrive at the required btu per hour output of the heater.

Conversely if you oversize your heater with too many btus you may be spending more money than necessary on your heating bill. Determine what temperature you d like the pool water to be. Solar pool heaters are a different kettle of fish. 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.

Back to my original bigger is better statement. The reality is however that most pool owners will not need to heat their pool from 50 degrees to 80 degrees very often or to do it within the arbitrarily assigned 24 hours. Gas pool heaters typically range from 100 000 btu hour to 400 000 btu hour and all will heat your pool. It is true that larger heaters heat your pool faster than smaller ones.