One btu is capable of raising the temperature of 1lb of water by 1 degree fahrenheit.
400000 btu pool heater.
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The universal h series 400 000 btu natural gas heater is an energy efficient high performance installation adaptable commitment to the pool service professional.
Hayward h400fdn universal h series 400 000 btu pool and spa heater natural gas low nox.
But you should also know that it s always better to buy a larger pool heater so you re not running your heater at 100 all the time.
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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.
Heater sizing for shared pool spa systems.
Swimming pool heaters are rated according to a measurement known as british thermal units or btu.
So a reasonably safe bet for our example pool is a heater that is rated for around 250 000 btu s.
A british thermal unit btu is the amount of energy required to raise one pound of water by one degree fahrenheit.
This item hayward h400fdn universal h series 400 000 btu pool and spa heater natural gas low nox raypak pr266aen 266k btu electonic natural gas swimming pool heater 009217 pentair 460736 mastertemp high performance eco friendly pool heater natural gas 400 000 btu.
For a typical 400 000 btu heater that s 4 gallons per hour.
This means the more btus a pool heater produces the faster it will heat the water in your swimming pool.
Any brand 400k btu or up according to your budget but you have to consider wind more than 5 mph could keep the temperature down distance from equipment to pool can cool down the water and the temperature of the water when begin to heat up and the air.
And 400 000 btus is more than enough power.
Propane pool heaters you can figure about 1 gallon per hour per 100 000 btu s to operate a propane pool heater.
Pentair 461059 master temp 125k btu natural gas swimming pool heater.
Pentair 460736 mastertemp high performance eco friendly pool heater natural gas 400 000 btu.
Those factors affect the time and efficiency to heat up your pool.
An industry leading hydraulic design reduces circulation pump run time.
Pool heaters are typically used only 3 5 of the average annual pump runtime.
This makes it run quieter last longer and because of larger size it will heat your pool quicker.
The other 96 5 of the time the heat exchanger can be bypassed so the pump works less saving electrical energy and up to 350 a year.