How to Quick Check Rv Air Conditioners to Prepare for the Camping Season

Take the time to do a little maintenance of your RV air conditioner.  A little work now may save you lots of time and money later!

The first thing to look at is the filter.  Dirty or clogged filters reduce air flow which can create freeze up, electrical, and efficiency problems. Also, dirty RV AC filters will allow dirt to get thru to the evaporator.  The filter should be checked once a month during the season.  Most filters are made of foam which are washable and reusable. Gently remove the filter and wash in warm water. Allow to air dry before reinstalling.  Replace damaged filters with the correct size and type for your air conditioners' make and model.

Check the evaporator. Unclean filters can allow excessive contaminants to be pulled through and build up on the evaporator fins. The build up insulates the evaporator and reduces efficiency, and can cause the compressor to overheat.  You can usually see the evaporator from the inside of the RV when you remove the ceiling assembly and filters.  Wipe off dirt with slightly damp cloth if needed.  Dry before reassembling.

Next, climb on top of the RV and inspect the condenser fins.  Carefully straighten fins that have been bent or crushed. Remove debris or bugs caught in the fins.  This will increase efficiency by allowing better air circulation.  While on top of the RV, look at your shroud.  Check for cracks and make sure it is securely attached to the coach.

Plug your camper into a 30 amp outlet and turn on your air conditioner to test it.  It is important to run your AC using at least 30 amps. Using anything less may do serious damage to motors, compressors and other components by providing insufficient power. Run your RV air conditioner for at least a half hour to check the fan and controls.  Test cooling by placing a thermometer where the air is going into the filter, and one where the air is coming out.  There should be at least a 20 degree difference with the compressor running.

Problems found during this quick check should be diagnosed by a qualified RV mechanic, using the proper meters and tools. The RV air conditioner is a sealed unit, and can not be repaired except at a repair shop with technicians trained to work on them.