Hello, I'm looking for info/advice/cost from all of you regarding heating a pool in winter.
First some specs:
Fiberglass pool 10,000 gal
Gas heater 400,000 btu
Southern California desert
Months to heat Nov-Feb [pool is heated by the sun all other months]
Worst scenario ranges during the above months [usually Jan] Air Temp 70ÂºH/ 45ÂºL, Water Temp 50Âº
Desired swim temp 80Âº
Daily swim/therapy at 3pm
Have heater hold a constant Â±70Âº, then bring the temp up to 80Âº at 3pm [lots of short cycles to hold, one longer cycle to boost the last 10Âº]
Let the temp drop everyday [no heater] to Â±50Âº, then bring the temp up to 80Âº at 3pm [one massive cycle every day to raise all 30Âº]
My spa [475 gal] heats at about 1Âº per minute, so using that as a rough guide 10,000 gal would take 10.5 hrs to raise 30Âº
The Gas Company estimated Â±20 Therms/day heating 5 hrs x 30 days = Â±$600 month [ouch!!] at 10 hrs we are looking more at $1200 [double ouch!!]
Not looking for solar or pool cover info.
Look forward to hearing from you all