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Thread: Heat pump v gas heater

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    Join Date
    Aug 2014
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    Heat pump v gas heater

    I am in the process of building a pool in NJ, but haven't picked my PB yet. My pool will be about 1200 square feet, have a variable speed pump (probably Jandy), a Aqua Comfort AC-150 Heat Pump, a Polaris 280 with 3/4 booster, a Rockwall and Grotto (inside Grotto there will be 6 Jacuzzi jets and blower), 2 Laminar Jets, 2 LED Bubblers in a sunshelf, 2 Ledlights in pool and one in Grotto, Jandy PDA P8 remote control, 90% Quartz finish, Zodiac SWF 185 GMP waterfall pump, Levelor K1100 autofill, and Autopilot Digital SWG. My pool will have 2 skimmers and (as of now) 5 returns. Most piping is 3 inch.

    I would like to keep the pool at a constant temperature from June through August (maybe 85 or 87) and keep it as high if possible in May and September. I know from all the threads that a gas pump will work better in May and September but am curious how much more it would cost to run a gas heater than the heat pump in June through August if I want to keep a constant temperature.

    Thanks

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    mas985's Avatar
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    May 2007
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    Pleasanton, CA
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    Re: Heat pump v gas heater

    It depends. What do you pay for electricity and what do you pay for gas?

    Generally, if gas $/therm is 5x more than electricity $/kwh, then a heat pump is cheaper to operate.

    Here in CA, gas always wins.
    Mark
    Hydraulics 101; Pump Ed 101; Pump/Pool Spreadsheets; Pump Run Time Study; DIY Acid Dosing; DIY Cover Roller
    18'x36' 20k plaster, MaxFlo SP2303VSP, Aqualogic PS8 SWCG, 420 sq-ft Cartridge, Solar, 6 jet spa, 1 HP jet pump, 400k BTU NG Heater

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    Re: Heat pump v gas heater

    Thanks. Gas is about 7X, so I'll stay with the heat pump.

  4. Back To Top    #4

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    Re: Heat pump v gas heater

    My contract calls for an AQUA Comfort heat Pump ACT-1500 (150,000 BTUS). I could upgrade to the ACT-1750,which is 166,000 BTUs. But the Act 1750 requires a 50 amp breaker (as opposed to a 40 amp breaker for the ACT-1500) so the PB wants 900 for the upgrade (in part for extra electric). Does anyone have an idea of how much better the larger heat pump will operate on my pool?

    Thanks
    1200 Sq Ft 41,000 Gal. Gunite, JANDY SVRS VS pump, JANDY JXI 400,000 BTU, Polaris 280 w/ 3/4 BP, Rockwall and Grotto (w/6 jets and blower), 2 JANDY Lam Jets, 2 LED Bubblers, 5 Ledlights, AQUALINK P16 RS, 90% Quartz, SWF 185 GMP BP, SWF 125 BP, Levelor K1100 Autofill, AP Digital SWG, 2 skim and 5 returns, and mostly 3 inch piping

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    JasonLion's Avatar
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    May 2007
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    Silver Spring, MD
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    Re: Heat pump v gas heater

    That difference won't make much difference. The larger heater will heat the pool more quickly, but only by about 10%, you probably won't notice the 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

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    Re: Heat pump v gas heater

    Thanks. I guess I'll stay with what I have then.
    1200 Sq Ft 41,000 Gal. Gunite, JANDY SVRS VS pump, JANDY JXI 400,000 BTU, Polaris 280 w/ 3/4 BP, Rockwall and Grotto (w/6 jets and blower), 2 JANDY Lam Jets, 2 LED Bubblers, 5 Ledlights, AQUALINK P16 RS, 90% Quartz, SWF 185 GMP BP, SWF 125 BP, Levelor K1100 Autofill, AP Digital SWG, 2 skim and 5 returns, and mostly 3 inch piping

  7. Back To Top    #7

    In the Industry

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    Mar 2011
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    441

    Re: Heat pump v gas heater

    I think that aqua comfort inflates its efficiencies, and BTU ratings.

    One of their sales reps just made up a bunch of **** when I asked them why they don't submit their heat pumps for AHRI testing to support their claims.

    $900 sounds like a lot to increase the wire from a #8 to a #6.

    I would however get the largest heat pump I could afford because that 10% in size someone times pays for itself in efficiency (i.e. aquacal SQ 155 vs 175).
    20X40 30,000 gallon gunite pool

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