RV Air Conditioner Cleaning and Maintenance

RV air conditioners can fail in the most inopportune times if you don’t take care of it. We will walk you through from the moment you get up the nerve to get on the roof to making sure your motorhome or towable RV air conditioner stays in top notch working condition and stays efficient in cooling the inside of your RV or camper.

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RV Maintenance: Keeping Your RV Air Conditioner Working Efficiently

We posted a great how-to tutorial on your RV air conditioner vents and filter cleaning and maintenance.  This article will show you how to inspect and maintain the rooftop components of your RV air conditioning system. 

Get Up on the Roof

RV air conditioning units are mounted on the roof which can present an issue if you’re a bit squeemish with heights or your physically incapable. Getting onto the roof isn’t for everybody. So, if you’re not up to the task, hire a professional.

RV ROOF MAINTENANCE TIP: Before your or anyone sets foot on your roof, ensure your RV and all rooftop components are not located near any low hanging power lines or cables.

We highly recommend wearing non-skid shoes and laces are tied securely. This is not the time to be wearing your Tommy Bahama flip flops. Its a good idea to inspect the bottoms of your shoes to ensure no grit or gravel are stuck in the treads before stepping foot on your ladder. You certainly don’t want to rip, gouge or snag your roof’s rubber membrane. If you hire a professional, we see no harm in asking if you can check the bottoms of their shoes before climbing the ladder. Remember, it’s YOUR RV.

Be extremely cautious of your footing while climbing the ladder or walking on the RV’s roof. One wrong step can and will result in serious injury…or worse.

Inspecting and Maintaining Your RV Air Conditioner

RV Air Conditioner Unit

Ensure the rooftop unit is not energized and cannot be energized while you conduct your maintenance checks. Carefully remove the protective cowling of the rooftop unit to inspect for debris, bee’s nests, dirt, dust, etc.

RV AC Remove Cover

The cooling fins should be free of dirt, not bent and in good condition.  If the fins are dirty use a prescribed air conditioner cleaning brush and some mild soapy water to clean them.

Be aware, you do not want to use a stiff bristle brush as it will damage any delicate components or bend the fins of your air conditioning unit.

RV Air Conditioner Fan

Inspect the fan blades for stress fractures and excessive dirt and dust that could throw the blades out of balance.  Again, make certain you gently clean with the same brush above anything that may hinder proper function.

RV Air Conditioner Wiring

Inspect the base plate of the rooftop unit to ensure weep holes are not plugged and that they allow condensation to drain from the unit. We found using straw cleaning brushes are great for cleaning tubes, hoses and small holes.

RV Air Conditioner Copper Lines

Next, you’ll want to carefully inspect the copper lines of the unit for rust, corrosion and leaks.  This may help you in identifying potential issues before a catastrophic failure happens thus leaving you with no air conditioning on a hot day.

RV Air Conditioner Label

Finally, ensure the wiring diagrams, schematic drawings and serial number are still applied and legible.

If you need to contact to rooftop unit’s manufacturer for service or parts you will need all of the above information. I will take a photo of it and keep it in a file on my digital devices and phone for information that may be needed later.

RV Air Conditioner Thermostat

Finally, work every function on your RV Air Conditioner’s thermostat. Make certain the fan, and different AC zones work correctly.

Inspecting your RV Roof

Don’t let the opportunity of already being on your roof preclude you from doing further inspection on your roof itself. Inspect the roof membrane, fittings, caulking, etc. Clean and recaulk any degraded caulk.

RV Maintenance Tip: Knowing your RV roof material will dictate what caulking product to use. Its always a good idea to have a Roof Repair Kit:

RV Air Conditioner Vents and Filters

And lastly, we also recommend you get into the habit of conducting  monthly air conditioner interior vent and filter maintenance.

Maintaining and inspecting all of your RV air conditioning components will allow your cool air system to perform at peak efficiency for years to come.

Other related RV Maintenance articles:

RV Roof Inspection and Maintenance

Air Conditioner Vents and Filters Cleaning and Maintenance

Window Screens and Fan Screens

Keeping Your RV Drains Clear

RV Hot Water System Cleaning and Maintenance


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