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Thread: Need some help on hot tub cost to heat with gas

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    Join Date
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    Need some help on hot tub cost to heat with gas

    I have an inground hot tub approx 500 gallons that is heated by a gas 400,000 Heat pump located in Los Angeles.

    Can someone give me a vague idea of how much it should cost to heat?

    We only used in 5-6 times in the last month and our bill was almost $200. Without the spa usually our gas bill is around $12 and has never been more than $36.

    Any help would be very appreciated.

    Thanks!

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    Mod Squad tim5055's Avatar
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    Re: Need some help on hot tub cost to heat with gas

    Welcome to TFP!!

    I'm kind of confused a gas heater and a heat pump are two different devices. Can you give us some exact model numbers and/or photos of your equipment please.
    TFP Moderator 39 X 18 23,000(ish) freeform gunite; built 2007ish; Pentair Triton II TR100 600lb Sand filter; 2 HP Pentair pump with 2.2 HP AO Smith single speed motor; 2 skimmers, 1 main drain, 4 returns w/waterfall, Stenner 45MHP2 3GPD running@ 60% - 15 gal Tank; heated by the sun CYA 200+ when I started - 50 now. Dolphin Supreme M5 Pool Cleaner. Hot Springs SX Spa, 285 gallon

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    JoyfulNoise's Avatar
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    Re: Need some help on hot tub cost to heat with gas

    That sounds a bit excessive to me but we'd need to know some more information - how long were you in the spa each time you used it and what was the temperature of the water BEFORE you started the spa heater up? Also, what are your utility rates for natural gas (I'm assuming your heater is hooked up to municipal NG as opposed to a liquid propane tank)? Typically rates are posted as $/THERM.
    Matt
    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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    Re: Need some help on hot tub cost to heat with gas

    Quote Originally Posted by tim5055 View Post
    Welcome to TFP!!

    I'm kind of confused a gas heater and a heat pump are two different devices. Can you give us some exact model numbers and/or photos of your equipment please.

    thanks!

    Hayward H400FD 400,000 for the heater
    Pumo is Hayward ecostar sp3400vsp

    municipal gas socal gas co.

    Any help is much appreciated.

    Water was starting at about 65 for most days and we were in for just 1-1 1/2 hours.

    Also, oddly the temp of the spa seemed to hold somewhat overnight. It was still in the mid-high 70's the next morning (I definitely turned everything off)

    Could there be an issue that is causing this?

    Again thank you!

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    JoyfulNoise's Avatar
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    Re: Need some help on hot tub cost to heat with gas

    Can you get your actual rate off of a recent bill? They can vary by region.


    Matt
    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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    Re: Need some help on hot tub cost to heat with gas

    Quote Originally Posted by JoyfulNoise View Post
    Can you get your actual rate off of a recent bill? They can vary by region.


    Sent from my iPhone using Tapatalk,16k gal SWG pool (All Pentair), QuadDE100 Filter, Taylor K-2006

    per the bill .78 for the first 52 then 1.04 for the rest.

    Thanks!

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