Recharging Freon In An RV Air Conditioner Isn’t A DIY Project

Roof-mounted RV air conditioners under normal conditions work well and are relatively maintenance free.  Owners can get into trouble when older units start to lose their cool. 

While it may be tempting to attempt to recharge the freon on your RV’s A/C when it’s blowing warm air, you’re far better off having a professional address the issue.

One cause of RV air conditioner failure is damage caused by attempting to run it when plugged into an outlet not rated for a minimum of 30 amps.  That reducer adapter that allows you to plug into your house receptacle can’t handle the load.  The air conditioner will be running in a low voltage condition and burnout is very likely to happen.

Beyond replacing a damaged plastic shroud that covers the A/C, there is very little an RV owner should be doing in the way of repairs to an RV air conditioner.

Curtis Carper

Curtis Carper

I’ve been involved in RVing for over 40 yrs -- including camping, building, repairing, and even selling RVs. I’ve owned, used, and repaired almost every class and style of RV ever made. I do all of my own repair work. My other interests include cooking at home, living with an aging dog, and dealing with diabetic issues. If you can combine a grease monkey with a computer geek, throw in a touch of information nut and organization freak, combined with a little bit of storyteller, you've got a good idea of who I am.

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  • Brian Silkwood

    I have a roof air unit that worked just fine. I had remove the metal covers to clean leaves and build up on  the filter heat exchange. I’d done this on other seasons without a problem. But for some reason this time one of the screws just touched one of the u shaped tubes and caused a leak. Please tell me there’s a kit that can be soldered on so as to recharge the system.

    • Curtis

      Brian,  That sounds like an expensive “Oopsy”.  Time to take it to the dealer I’m afraid.

      • chase

        I am sure by now you have got a resolve to this problem. In the industry we often have done this ourselves. The option is put tape on the hole to prevent moisture from getting in the system. Call a reffer tech and have him braze the hole. Often taps will have to be installed to service the unit. and a vac will have to be pulled on the repair. total repair should be around 400.00 tops. That is a bunch when new air units are around 800.00..

  • Brenda

    I would like to know if you could help me. We was leaving for a camping trip but our air-conditions seem to have quit. It was running yesterday. The thermostat is reading:
        zone 1  auto  00
        zone 2  auto  00
    We have tried to look for a fuse but no luck.
    Tried to replug it in and still nothing will come on.
    We have a 40X Fleetwood Discovery, 2008 360 Cummings engine. There is no one to call locally and Fleetwood RV is closed until Monday. If you have ever had this problem, could you help us.
    Thank you,
    Brenda McQueen
    Columbus, MS 

  • Curtis

    Brenda, Not much you can do but wait for an RV dealership to open Monday.  Remember air conditioners run on 110 AC voltage.  Most likely there is a circuit breaker in your electrical panel for them rather than a fuse in the 12VDC panel.