Using your kitchen faucet to heat the pool

[CarlD]

It takes 8 BTU to raise a gallon of water 1 degree. Just as a SWAG, let's say the pool is at 80F, water heater is at 120F. Each gallon of water from the water heater then has 8X40=320 BTU more than the pool water. Divide that by the 24,000 gallons in the pool (ignoring the gallon added), and you will have .013333BTU, which would raise the pool temperature by around 1/1000th of a degree. The BTU content of the water in the heater starts dropping as soon as you start using it, so this is best case. Even with a 100 gallon tank, you are talking about raising the pool temp by only 1/100th of a degree. The cost would be astronomical too.

Pool heaters are on the order of 400,000 BTU per hour. You aren't in the same ballpark.

Nicely done!

[imfignewton]

Why not hook a hose thru the cooling system of your car and heat it that way?

[cygnusecks]

Of course, all of these methods are a waste of time once you see the Redneck pool heater. http://www.redneckpoolheater.com/.

[mwsmith2]

Why not hook a hose thru the cooling system of your car and heat it that way?

Because that's even more inefficient than a water heater.

Michael