Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 3 of 3

Thread: Solar cover questions

  1. Back To Top    #1

    Solar cover questions

    I have a gas heater as well as a solar cover and my wife and I prefer pretty warm water (79 degrees). Gas is expensive and it is a pain to constantly take the cover on and off. I typically run the pump on a timer overnight and manually turn on when we are swimming in the day. The cover seems to work really well as an insulator for night but I'm not sure if it is better for heating during a sunny day or if just open sunlight works best. If I leave the cover on with a sunny day, I notice the first few inches of water is VERY warm, but underneath it is chilly. Is it better in that case to circulate the water while the cover is heating it?
    21,000K IG Vinyl Free Form, 1.5 HP Pump, Sta-Rite filter, 5 jets, 2 drains, SWG, 200K BTU gas heater

  2. Back To Top    #2
    SCCS's Avatar
    Join Date
    Sep 2008
    Left coast

    Re: Solar cover questions

    I say "If it is free use it."
    I have a solar cover to, no gas heater. I leave the cover on all the time except when swimming and the pump run's from 2pm to 4pm to circulate the warm water near the cover with the colder water near the bottom. In the last few weeks my water has warmed from the 60's to 82 degrees.
    16,500 gal Roman end with PebbleFina finish
    4 x 160 intelliflo pump
    Easytouch controls with an IC40 chlorinator
    Sta-rite cartridge filter
    A & A infloor cleaning system
    Pentair 5g LED pool light

  3. Back To Top    #3

    Join Date
    Jan 2009
    Cupertino, CA

    Re: Solar cover questions

    I also leave my cover on all day, because I'm more interested in reducing water loss through evaporation than in any heating effects. But I've also noticed the heating effect on the top couple inches on a sunny day. I expect circulating during the day would make that more effective; as you cool the underside of the cover, you increase the temperature difference, and you'll get more efficient conduction from the cover to the water.

    That said, the overall effect is likely small. If you are trying to heat the pool for free, having the cover off during sunny days is probably the most effective method.
    BBB "Intermediate Swimmer"
    IG plaster pool 18.5K gal, Hayward Pro-Grid DE filter, 3/4 HP Hydramax II; Polaris 380, 3/4 HP booster
    AG spa 325 gal, probably Sundance of some kind
    Water testing instructions on one page

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts