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Thread: Heater has vibration?

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    Heater has vibration?

    My pool heater (Gulfstream Heat Pump) is making more than normal noise this season and has a vibration going on in the condenser fan or motor. All seems to be working fine but the noise from the vibration is anoying to hear when trying to sit at the pool. I am thinking that the fan blades are somehow out of balance. I dont know how they got that way but I suspect the got whacked maybe by a falling something or another. There is no dent to indicate this though. There is no screaching sound as if the bearings are ceasing up. There is a shaking though and the resulting noise. Its not too bad but I feel I should address it before it becomes worse or causes bearing failure. Any help or insights would be appreciated.
    27 foot round above ground

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    Richard320's Avatar
    Join Date
    Jan 2010
    San Dimas, CA (LA County)

    Re: Heater has vibration?

    I'd look for mud or a wasp nest or something stuck to the fan blades. It doesn't take much to throw a fan out of whack.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Join Date
    Apr 2011
    Warner Robins, GA

    Re: Heater has vibration?

    I have a Gulfstream too (HE125-T-A heat and cool).....

    A few things I can think of that you can check without actually doing anything to the unit:

    1. How is your unit sitting? Is it on a slab or pavers, hopefully not wood? If pavers has one sunk into the ground a bit? be sure the base is firmly sitting on the substrate
    2. Did you use any type of shim (hope not) under your unit that has since come out?
    3. Are you connections (unions for water?) to the heater loose

    Anything other than these is potentially an internal problem (possible fan bearings, etc...)

    may I ask how old your unit is?

    I would Call Gulfstream Tech support at 954.318.6900 or email

    Let us know how you turn out
    - Jim
    16 x 32 Grecian Vinyl. Salt-Aqua Plus PS-4, Hayward Pro Series Sand Filter, Hayward Ecostar SP34000vsp, Gulfstream HE-125-T-A Heat/Cool heat Pump

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    Re: Heater has vibration?

    I took the fan/motor outyesterday and found nothing loose or out of the ordinary other than the motor seemed quite warm. It was too warm to put your hand on it and leave it there.The blades seemed top spin freely though. There was one blade that has balance pin inserted in it but I can not tell if it is all there or if there is a part on the back that has come off. It looks like a smooth shank short nail that sticks out about 1/4 inch on the back but nothing is on it, just the stud sticking out. This is obviously the balance weight or whats left of it.

    I did email them and have not heard anything back yet. Hopefully today though. The unit is a GS 1000 H-A which is about 4-5 years old I think. I picked the unit up used from a guy in Florida that moved and didnt need it any longer. Being in NC myself I am not in an area that has service available locally and unlike other brands of heaters there is no listing of parts available on the net. Sure hope that they respond today.
    27 foot round above ground

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