Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 8 of 8

Thread: Inground gas heater on above ground pool

  1. Back To Top    #1

    Join Date
    Mar 2014
    Location
    Kansas City
    Posts
    7

    Inground gas heater on above ground pool

    Can I use an inground heater on an above ground pool? I was told the output would be too hot and melt the hoses and fittings. Maybe that defends on the flow rate. I was also told by someone else that a 100k btu heater would be to small.

    What is the best way to get the rights size considering pool size, pump size, flow rate, etc? I have too much shade for solar and am afraid and 50K btu heat pump would be too expensive and not supply enough heat. So I'm leaning toward natural gas.

    I have a 15x24 AGP with 3/4hp pump and sand filter.

  2. Back To Top    #2
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Inground gas heater on above ground pool

    Welcome to TFP!!!

    I would think that you could use any heater you want. Usually they only raise the water temp by a few degrees at a time so the melting of hoses and pools sounds silly to me. Of course heating works best at high flow rates. IF the flow was too slow, most heaters would turn off to avoid overheating the exit water and/or damaging itself.

    Generally the size of the heater just determines how fast the pool is heated, while still using a similar amount of gas.

    What is the volume of your pool? How much do you want to raise the temperature and how fast do you want to do it?

    - - - Updated - - -

    Assuming 10k gallons, to raise the pool by 10 degrees would require ~830,000 BTUs. So a 100k BTU heater running at 83% efficiency (a reasonable number) would take about 10 hours to raise the pool by 10 degrees (not counting losses to evaporation and radiant losses).
    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
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  3. Back To Top    #3

    Join Date
    Mar 2014
    Location
    Kansas City
    Posts
    7

    Re: Inground gas heater on above ground pool

    My pool is about 9000 gal. I'd like to raise the temp 10-15 deg and more concerned about efficiency/cost than speed.

  4. Back To Top    #4
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Inground gas heater on above ground pool

    All gas heaters will require about the same amount of gas to heat a pool ... their efficiencies are about the same. But the slower you are heating it, the more time for losses to the environment.

    9k *8.3 lb/gallon * 10 degrees = 747000 BTUs

    100K heater should do 10 degrees in 9 hours so 15 degrees in 13.5 hours
    400k heater should do 10 degrees in 2.25 hours so 15 degrees in 3.4 hours

    If you are going to maintain a higher temp and only in the summer, then the heat pump might be more efficient. But, it will not work well when the air is under 60 degrees and it will be a lot slower than a gas heater.
    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
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  5. Back To Top    #5

    Join Date
    Mar 2014
    Location
    Kansas City
    Posts
    7

    Re: Inground gas heater on above ground pool

    Thanks, that all makes sense. Should I be concerned about the flow rate from my pump, especially if I go with a bigger heater?

  6. Back To Top    #6
    Mod Squad jblizzle's Avatar
    Join Date
    May 2010
    Location
    Tucson, AZ
    Posts
    37,389

    Re: Inground gas heater on above ground pool

    I am not sure if the required flow rate for the heater changes with size or not. I would think that any reasonable single speed pump (or 2-speed on high) should provide enough flow rate for the heater to run. But, I am not positive on this.

    - - - Updated - - -

    It is not going to be cheap to keep adding 10+ degrees to your pool though.
    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
    If you found TFP helpful and we saved you money ... Become a TFP Supporter!

  7. Back To Top    #7

    Join Date
    Mar 2014
    Location
    Kansas City
    Posts
    7

    Re: Inground gas heater on above ground pool

    Thanks, you are very helpful. I'll just have to see how the cost works out and if it's too high I'll have to lower my expectations.

  8. Back To Top    #8
    Patrick_B's Avatar
    Join Date
    Jun 2011
    Location
    Midland TX
    Posts
    15,001

    Re: Inground gas heater on above ground pool

    They make these types of heaters for small ABG pools too. Gas or propane as I recall.
    TFP Moderator
    Essential Links:
    ABC's Of Pool Chemistry, Test Kits, SLAM Your Pool
    28K Gal IG FreeForm, CLI Quartz, Pentair 36"SF & VS Pump, Dolphin M5, Rheem

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •