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Thread: Heat Pump vs NG heater with Auto-cover in southern WI

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    Join Date
    Aug 2016
    Janesville, WI

    Heat Pump vs NG heater with Auto-cover in southern WI

    We are getting ready to install a new pool and we are deciding between an Aqua-comfort heat pump vs a NG Heater. MY boys love water and would swim everyday. Just wondering about the experience of others with each for heating. We plan to open from May to October
    20 x 40 in ground pool, 3.6 - 8.6' depth, 27 ml vinyl liner, Hayward VSP pump, Hayward H series 300000 heater, Cartridge filter, Aqua-rite Pro sense and Dispense Salt system and pH reduction, Coverstar autocover, Polaris 280 Automatic cleaner, LED color lights, Wild ride slide

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    wjr75's Avatar
    Join Date
    Jun 2013

    Re: Heat Pump vs NG heater with Auto-cover in southern WI

    I would go with a 400k BTU NG Raypak heater. It gets cold up here and the heat pump will not cut it when the temps drop in the spring and fall.
    Inground 22k gallon gunite 15x31 main pool, 15x7 wading pool/sunning deck, hot tub/with overflow (9' octagon with limestone top) & slide NSWG, Aqua Blue Pebble Sheen
    Filter dual cartridge Sta-rite 450sq/ft, TF-100 Test Kit
    Heater Raypak 2100 400k btu cupro-nickel exchanger
    Auto pool cover, Polaris 280 auto pool cleaner, Jandy AqualinkRS8 Remote Control System

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    JoyfulNoise's Avatar
    Join Date
    May 2015
    Tucson, AZ

    Heat Pump vs NG heater with Auto-cover in southern WI

    Basically an NG heater (get the largest possible 400kBTU/hr) will give you the ability to heat up quickly. With an auto cover you should be able to retain a lot of the heat you add. A heat pump is more of a "set it & forget it" where you leave it running all the time since it heats more slowly. A HP loses efficiency as the outside air temps drop and pretty much will produce no heat when the air temp us below 50F. Gas can be used anytime but should not be used when the air temps are below 55F since the exhaust gas (mostly water) can condense and leave behind a mildly corrosive condensate (due to dissolves NOx gases). It's like a car muffler rotting out faster in winter when used for short trips because the engine/exhaust gas never gets warm enough.

    I think gas is a better choice but it also depends a lot on your utility rates.
    16k IG PebbleTec pool, 650gal spa, spillway and waterfall, 3HP IntelliFlo VS / 1.5HP WhisperFlo, Pentair QuadDE-100 filter, IC40 SWCG, MasterTemp 400k BTU/hr NG heater, KreepyKrauly suction-side cleaner Dolphin S300i robot, EasyTouch controls, city water, K-1001, K-2006 and K-1766 test kits, Mannitol test for borates

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