Pool Heater Btu Per Gallons

Solar pool heaters produce the lowest btu output of any type of pool heater.

Pool heater btu per gallons. To heat in normal summer conditions when ambient air temperature average 70 f in a 24 hour period. Size at 4 btu s per gallon or 1 btu per litre of water. Size at 5 btu s per gallon or 1 3 to 1 5 btu s per litre of water. Heating up a pool versus a pool and spa combination requires less btu power.

This calculator is approximate because it doesn t account for the many factors that impact heat loss in the swimming pool. Usually if you have a pool and spa combination we recommend purchasing the largest btu size available because you re not just heating up a single. So a reasonably safe bet for our example pool is a heater that is rated for around 250 000 btu s. 15 000 x 8 33 124 950 divide by 24 5 206 pool is at 55 f and required temp is 82 f so rise is 82 55 27.

Clearly there is no company on earth which will sell you a 7 million btu hr. You can figure about 1 gallon per hour per 100 000 btu s to operate a propane pool heater. However solar heating also has the lowest cost per btu since they heat water using the warmth of the sun. Rules for sizing your heat pump pool heater.

This figure represents the heater output necessary to heat the pool to the desired temperature in 24 hours. For the 30 000 20 x 40 pool gallon example. Now accounting for the entire volume of our pool the total heat energy required is 125 1 x 53860 6 737 886 btus. Currently propane runs about 2 50 per gallon propane prices do fluctuate so keep an eye on this website updating the national average cost of propane.

For the example pool that needed 207 500 btu per hour to heat the pool when you add another 20 it becomes 248 400 btu. The exact time needed to change the pool temperature will vary based on evaporation rate convection losses thermal radiation losses and conduction losses explained more below. Multiply that result by 12 to arrive at the required btu per hour output of the heater. Using a heating element to heat water like you would find with an electric kettle or a traditional hot tub heater is the least efficient method.

A 400k btu heater will heat a pool twice as fast as a 200k btu heater and burn gas twice as fast. Heater sizing for shared pool spa systems. 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. If you want to perform the calculations for.

That s a whole lot of heat energy right. 10 412 x 20 208 240 btus per hour. Usually if you have a pool and spa combination i recommend purchasing 30 higher btu for example going from a 300k to a 400k. Heating up a pool versus a pool spa combination requires less btu power.

Another example if your pool is 15 000 gallons.