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  1. #1
    Join Date
    Jan 2009
    Location
    Foothills of NC
    Posts
    44

    Double wide package unit install

    I have a customer who wants a package unit installed in his doublewide. Ive never done this before, but ive been told you have to have a particular unit for a mobile home because of the duct work. If that is true, what manufacturers make mobile home units? It looks like im going to have to cut a new return in the floor also. Any advice would be appreciated from someone who has had to do this before. Thanks.

  2. #2
    Join Date
    Jun 2009
    Location
    Upstate SC
    Posts
    1,439
    The duct work causes high static pressure. Install a gas pack if possible because the head psi will be too high on a heat pump during the very start and end of heating season. Cut in a floor return. Blank off where old unit was and make your own y to split the trunks.

    Sent from my ERIS using Tapatalk 2

  3. #3
    Join Date
    Jan 2009
    Location
    Foothills of NC
    Posts
    44
    I was told because the duct causes a high static pressure you need a unit with a high static blower. Is that something most manufacturers make? I want to try to talk him into a split, his complaint about that is the noise.

  4. #4
    Join Date
    Nov 2007
    Location
    Mississippi
    Posts
    1,401
    Go to a mobile home supply house and get a package unit floor return kit. It comes with correct size floor grill and boot to go between floor joists.

  5. #5
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,833
    Just put in a split!!!

  6. #6
    Join Date
    Jul 2008
    Location
    Rochester NY
    Posts
    4,763
    Quote Originally Posted by supertek65 View Post
    Just put in a split!!!
    Ya know yur a redneck when... ya own a yard furnace.

    I pulled an 87,000 and put in a 40,000 carrier mh unit in a 1700 sf double wide a few years back. 1.5 ton heat pump. Smallest fan they made. People hated watching tv with remote in their lap. Happy they don't have to do that any longer.

    Very happy they're annual gas went from 1000+ therms to just over 600. Electric stayed about the same. $4-500 annual savings.

    Taped holes in beer can duct, connected hard return to center return that previously jumped to open plenum road barrier return, and caulked leaky window extension jambs (you need a blower door to understand leakage opportunity.)

    Expect energy use to go UP quite a bit with a yard furnace.
    Which makes more sense to you?
    CONSERVATION - turning your thermostat back and being uncomfortable. Maybe saving 5-10%
    ENERGY EFFICIENCY - leaving your thermostat where everyone is comfortable. Saving 30-70%

    DO THE NUMBERS! Step on a HOMESCALE.
    What is comfort? Well, it AIN'T just TEMPERATURE!

    Energy Obese? An audit is the next step - go to BPI.org, or RESNET, and find an auditor near you.

  7. #7
    Join Date
    Jan 2009
    Location
    Foothills of NC
    Posts
    44
    I'm going to price him a split also. He asked for a package unit. He complained about being able to hear the fan.

  8. #8
    Join Date
    Jun 2009
    Location
    Upstate SC
    Posts
    1,439
    I've had better results with a package unit. If you do the split You will need a good transition for a the air handler and then the split underneath will still need to be reworked.

    Sent from my ERIS using Tapatalk 2

  9. #9
    Join Date
    Nov 2011
    Location
    USA
    Posts
    406
    If you install a split, you still got to have a high static blower. You're looking for something that will blow the nominal air volume at 0.7 - 0.8 inWC. "Conventional" equipment isn't typically rated that high.

  10. #10
    Join Date
    Sep 2004
    Location
    Kansas City, Kansas, United States
    Posts
    13,833
    a mobile home split is the way to go!

    they have 90% too!
    I WILL SELL WORK,GENERATE BUSINESS, GO GET NEW CUSTOMERS!
    YOU SHUT THE HELL UP AND QUIT RUNNING YOUR MOUTH!

  11. #11
    Join Date
    Jan 2004
    Location
    PA
    Posts
    68,789
    Check out Coleman and Nordyne packaged units.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  12. #12
    Join Date
    Jul 2012
    Posts
    18
    Coleman, Nordyne and Goodman. Always had good results from Goodman.

    Sent from my SAMSUNG-SGH-T989 using Tapatalk 2

  13. #13
    Join Date
    Mar 2007
    Location
    NW AR
    Posts
    2,478
    Rheem sales a MH rated package unit. I havnt seen a gas pack rated for MH's, theyre usually heat pump or straight a/c with electric heat. What we do is use the space where the old unit was as the return. Cut that section of supply duct out, blank it off, and run your return into that closet then branch your supply and tap into the two sections of supply ducting. EZ

    The easiest is just to go back with a MH split system...

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