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Thread: Heating water using Waste setting?

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    MilkMaid's Avatar
    Join Date
    Jun 2013
    Bumpass, Virginia

    Exclamation Heating water using Waste setting?

    I was just sitting here thinking of how I could heat up my pool water in addition to our solar cover. I was thinking of attaching 1.5" black, flexible, PVC, coiled hose to my backwash port on my sand filter, running the coiled hose to a sunny location, then back into the pool using the Waste setting on my multi-port sand filter. This way I would be using an existing setup and wouldn't have to build anything special (my husband, I mean ) The pool water would simply be circulating through the black hose, heating up and put back in the pool instead of over the hill, right?? My husband won't get in the pool unless the water is 85* or above and he's missed out on a lot of swimming this summer because of the cool temperatures. I'm just trying to figure out something without spending "more money" on the pool!

    If you guys think this will work, how much hose should I start with since my pump is 1.5 hp? 50' of hose probably wouldn't have enough time to heat up, would it?

    Also, I was thinking that if he put a Y and a valve at the backwash port, we could use two separate hoses for this. That way, I'm not putting dirty water back into the pool. Will it work? Come on guys, tell me it'll work! Please!!

    21'x54" Quest (Resin) -11,700 gal. AGP
    Hayward 18" Sand Filter System (150lbs.)
    1.5-HP Power-Flo Pump (2100 gph)
    Terra Cotta liner (25 gauge)
    TF-100 test kit
    BBB method
    Full sun

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Tucson, AZ

    Re: Heating water using Waste setting?

    Solar heating is all about exposure to the sun and is best done by heating a lot of water by a few degrees and not heating a small amount of water by many degrees. It is not economical to try to DIY a setup when the solar panels have become so cheap.

    You also can not run all the water flow through a single garden hose ... your pump is not going to like being that restricted and the flow rate will drop. You would need to have many hoses plumbed in parallel and that will quickly cost as much as buying a few cheap solar panels off Ebay.

    I am not sure I understand your description of a Y on the backwash port to keep the water clean? If you are running in waste mode, nothing is going to be filtered.
    Jason, TFP Moderator
    18k IG pebblesheen pool, Hayward ProLogic P4 w/ T-15 SWG, Pentair 1HP 2-speed Superflo, Hayward 6020 DE filter
    500 sqft Heliocol solar panels, ThePoolCleaner, TF-100 test kit w/ SpeedStir
    Pool School + Test Kit + PoolMath = A TROUBLE FREE POOL
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  3. Back To Top    #3

    Join Date
    May 2013
    Fort Lauderdale, FL

    Re: Heating water using Waste setting?

    Nooope. Solar panel or pony up and get a gas heater. I run my pool at 85-88 degrees on the weekends. I can go from 79 to 85 in a few hours.
    45'x12' 17k gal, IG plaster, Pool Pilot Nano+ SWG, 1/2hp Whisperflo pump, PAC-FAB TA-60D sand filter, Raypak 266 heater
    Pool School + Test Kit + Pool Math = Trouble Free Pool

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