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  1. #1
    Join Date
    Apr 2008
    Location
    Upstate New York
    Posts
    725

    will my generator run my central ac ?

    I have a generator that is 5550 watt and peak 8550 it seems to run my whole hose when I need it, lights, refridge etc

    Is it ok to run my central ac ?? AC company said no problem.

  2. #2
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    17,600
    I would be real careful....many times the electrical sign wave isnt even and can damage circuitry.
    "The road to Hell is paved with progressive policies."

  3. #3
    Join Date
    May 2009
    Location
    courtenay, bc, canada
    Posts
    12
    3.412 btu's per Watt
    Last edited by PacifiKool; 04-05-2010 at 02:46 PM. Reason: dyslexia

  4. #4
    Join Date
    Apr 2008
    Location
    Upstate New York
    Posts
    725
    Paci, what does that mean ??? Also, I have run my Rheem gas furnace on it and my refridgerators with no problems, isnt this what they are for ????

  5. #5
    Join Date
    Jun 2007
    Location
    The Twilight Zone
    Posts
    2,964
    Quote Originally Posted by PacifiKool View Post
    3.412 btu's per Watt
    So?

    What about the motor start-up draw?

  6. #6
    Join Date
    Jun 2007
    Location
    The Twilight Zone
    Posts
    2,964
    Quote Originally Posted by cvcman View Post
    Paci, what does that mean ??? Also, I have run my Rheem gas furnace on it and my refridgerators with no problems, isnt this what they are for ????
    My 3-ton heat pump draws 2930 watts steady-state at AHRI rating conditions for cooling mode.

    Not sure what the power spike is on compressor start-up. That may be a problem for your generator.

  7. #7
    Join Date
    Jul 2000
    Location
    Guayaquil EC
    Posts
    10,085
    If you're already running lights and the refrigerator, a 5550 watt generator isn't capable of running even a small 2-ton central A/C. They simply don't have the surge power to start the compressor. They're pretty much maxed out with a 5-6000 Btu window unit.

    Here's a good read on selecting a standby generator to handle your A/C:
    http://www.generators.smps.us/sizing.html

  8. #8
    Join Date
    Apr 2008
    Location
    Upstate New York
    Posts
    725
    I think my ac unit is 1-1/2 ton ?? Its a small ranch house. I have 1 refridg. I have had this run my 80 gallon elect water heater before no problem ????


    How would I know for sure ?? If I tried it it would bog right down if it wasnt enough ?

  9. #9
    Join Date
    Apr 2008
    Location
    Upstate New York
    Posts
    725
    It ran my NG furnace ok , should it have ??

  10. #10
    Join Date
    Jan 2005
    Location
    Emerald Coast
    Posts
    924
    You're on thin ice ... Water Heater, probably it's a resistive load.

    NG Furnace, maybe - maybe not ... repair could be $$$.

    You need 12 - 15 kw to reliably run an a/c and there's no guarantee attached. You wreck it - you own it.
    Do not attempt vast projects with
    half vast experience and ideas.
    ...

  11. #11
    Join Date
    Apr 2008
    Location
    Upstate New York
    Posts
    725
    when I do the water heater I shut everything else off, the A/C chart beow said starting power needed fr 2 ton unit was 5k watts after 3 seconds that drops off a lot. Mine peaks or surges at over 8k watts !

    You dont think I should use it to run the furnace either ??? What the heck good is it then

  12. #12
    Join Date
    May 2006
    Location
    Bedford,Ohio
    Posts
    27
    What the heck good is it then?

    so you can fire up your puter and join us here.

  13. #13
    Join Date
    Apr 2008
    Location
    Upstate New York
    Posts
    725
    looking at the online sizing chart it says mine is PLEANTY big enought ot run my furnace and refridge and lights, you guys dont think so ?? Again it has 8550 surge ! I have run the furnace before on it with the refridge and small freezer with zero problems.

    If it couldnt handle the start wouldnt it throw the breaker on the generator ?

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