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Thread: AquaCal heat pump not big enough? or is it just me?

  1. Back To Top    #1

    Join Date
    Mar 2008
    Location
    Central VA
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    328

    AquaCal heat pump not big enough? or is it just me?

    I have an AquaCal heat pump, not sure of the model number, but the string of numbers on the side plate are 120AHDEBNB (not exactly the same model #'s as listed on the manual), and I have a 16,800 gal. "jewel" shaped pool (8' deep).
    That sucker doesn't seem to work well (had it for 2 seasons, was installed with the pool build), but maybe it's me. It seems like it runs ALOT in early/late season, doesn't help raise the water temp much at all, and my electric bill seems to skyrocket (I do run my pool pump 24/7, so I'm sure that's also not helping).
    Maybe I'm too cinchy on the run time, and should just let the AquaCal run 24/7 until I get the temp.s I want.
    I did get a solar blanket last year, and that helps maintain heat at night, but the heat pump still runs alot at night in early/late season, just to maintain the temps. My wife likes it to eventually be 86 degrees or so in the water, and I'm in VA, so obviously we're asking for alot.
    Does it sound like my PB possibly undersized my heat pump? My PB is picky about his equipment choices, but my buddy has a Heat Siphon (5 HP) Heat Pump, and a MUCH larger pool than mine (20x40), and he swears that his pump heats his water fine and doesn't add alot to his electric...even in late season.
    Sorry for the long question, but I was just curious as to whether this heat pump is enough for my pool...or if anyone had any operating suggestions to get more out of it.
    I was tempted to have my PB come by and check it out, but it seems like it is operating fine (last ran it in Oct., but the air coming out of the fan was noticeably cooler than the ambient temp.).
    Thanks for any help!
    Todd
    --------------
    Pool: 16x36, 16,800 gal., vinyl, sand filter, SWG & AquaCal Heat Pump
    Spa: Hot Springs Sovereign, 355 gal., ozone/ion
    The most helpful tool you'll ever have for your pool:
    http://www.poolcalculator.com/

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879
    Your heat pump gives 109,000 btu/hour (6.5 btu/gallon), which isn't very much for a pool, though small units are fairly common with heat pumps. Also, the output will fall when the outside temperature is colder, so you aren't going to get nearly as much heat out of it at night this time of year. We have a 198,000 btu/hour gas heater and a 19,000 gallon pool (10.5 btu/gallon) and we are lucky if we can get a 1 degree increase per hour when the sun is shinning directly on the pool.

    If you don't already have a solar cover you should get one, they make a huge difference.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

  3. Back To Top    #3
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    Re: AquaCal heat pump not big enough? or is it just me?

    Quote Originally Posted by tnthudson
    I have an AquaCal heat pump, not sure of the model number, but the string of numbers on the side plate are 120AHDEBNB (not exactly the same model #'s as listed on the manual), and I have a 16,800 gal. "jewel" shaped pool (8' deep).
    That sucker doesn't seem to work well (had it for 2 seasons, was installed with the pool build), but maybe it's me. It seems like it runs ALOT in early/late season, doesn't help raise the water temp much at all, and my electric bill seems to skyrocket (I do run my pool pump 24/7, so I'm sure that's also not helping).
    Maybe I'm too cinchy on the run time, and should just let the AquaCal run 24/7 until I get the temp.s I want.
    I did get a solar blanket last year, and that helps maintain heat at night, but the heat pump still runs alot at night in early/late season, just to maintain the temps. My wife likes it to eventually be 86 degrees or so in the water, and I'm in VA, so obviously we're asking for alot.
    Does it sound like my PB possibly undersized my heat pump? My PB is picky about his equipment choices, but my buddy has a Heat Siphon (5 HP) Heat Pump, and a MUCH larger pool than mine (20x40), and he swears that his pump heats his water fine and doesn't add alot to his electric...even in late season.
    Sorry for the long question, but I was just curious as to whether this heat pump is enough for my pool...or if anyone had any operating suggestions to get more out of it.
    I was tempted to have my PB come by and check it out, but it seems like it is operating fine (last ran it in Oct., but the air coming out of the fan was noticeably cooler than the ambient temp.).
    Thanks for any help!
    sounds about right for a heat pump. gas heaters are faster.

    BTW, YOUR in the WRONG part of VA. we had 75 degrees yesterday. according to the news were gunna be 80s for the rest of the week

  4. Back To Top    #4

    Join Date
    Apr 2007
    Location
    Ft Lauderdale, Florida
    Posts
    1,455
    Without a blanket, the Heat pump will run about 17 hrs/day to maintain 80 degrees water temps. With a blanket, it will run about 7 hrs.
    At this time of year, you're better off leaving the blanket on until you're going to use the pool.
    Sean Assam - Sean@teamhorner.com
    National Accounts and Commercial Products Manager
    AquaCal Heat Pumps www.aquacal.com
    AutoPilot Salt Chlorine Generators www.autopilot.com

  5. Back To Top    #5

    Join Date
    Mar 2008
    Location
    Central VA
    Posts
    328
    Thanks for your help...I guess I was just expecting too much, but I do have a solar blanket and will try to start out using it as much as possible to see how that goes.
    Todd
    --------------
    Pool: 16x36, 16,800 gal., vinyl, sand filter, SWG & AquaCal Heat Pump
    Spa: Hot Springs Sovereign, 355 gal., ozone/ion
    The most helpful tool you'll ever have for your pool:
    http://www.poolcalculator.com/

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