Forum Discussion

CPAHOG's avatar
CPAHOG
Explorer
Feb 11, 2016

Cost to install generator?

We're buying a built-to-order 5th wheel and having the factory do a generator prep for about $400. There's an Onan installer not far from the factory so they offered to take it to Onan and have them put one in before we pick up. The 5th wheel dealer quoted us a reasonable price for the generator (5.5 Propane) for $4,100 but then said it would cost between $1000-$1500 to install. Huh?? What am I missing that, with the prep done, it would take someone over $1K in labor hours to put the thing in and make the hook up? I can see jacking up the price a bit to cover their time to take it over and pick it up but still. Any insight you can give me?

18 Replies

  • Really my preference is to purchase a portable gen set instead of the Onan, much cheaper in the long run. Again do your research on here.
  • Check here before installing propane, it doesn't seam to be liked that much, they can install a small gas tank, mine is 10 gallons, it is a better option.
  • Good price on the 5.5 generator. Way too much for install.
    Install should be less then $300. Or just pick up the generator and put in in the bed of your truck on pick up of the 5er.

    And find help at home to install the generator.
  • In 2006 my Onan Microquiet 3600LP cost $4,100 for the total cost. Generator and installation. I don't have a transfer switch, the shore power cord is simply moved to the generator powered receptacle.

    I hope to never have an LPG generator again. Under continuous use, expect to go through 60 pounds of LPG in 24 hours.

    The next TH I am considering provides a 30 gallon gasoline tank for the generator. Gasoline is much easier to get than LPG. If LPG was the only choice for a built in, I would simply use gasoline fueled portables.
  • RoyB's avatar
    RoyB
    Explorer II
    Where do they install a built-in generator on a fifth wheel... Seems like to me it has to be in a special location that is sealed from the living areas and have access to the ground from the bottom etc... This is in additional to providing external exhaust and electrical wiring and controls...

    You are already short on storage space as it is...

    I suspect the Motorhomes are designed already to have an on-board generator and the trailer type units will have to give-up some precious room to install one.

    Then after you get one installed you will have to follow all the rules when you can run your generator at public places... Sure sounds like a WIN-WIN senerial to me haha...

    Roy Ken
  • Good question on what the prep includes. Put in a call to the dealer to find out.
  • Just a guess here... but the "generator prep" is probably for electrical (wiring, transfer switch, maybe a readout panel inside) and $400 sounds cheap for that. I doubt that price includes anything propane related.

About RV Tips & Tricks

Looking for advice before your next adventure? Look no further.25,139 PostsLatest Activity: Jun 12, 2025