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Old 03-04-2017, 07:09 AM   #1
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A/C Units

Is there any annual maintenance suggested for the roof A/C's? i.e. coil & fin cleaning? Are there any filters that need to be cleaned/changed?

Thanks
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Old 03-04-2017, 08:46 AM   #2
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The return air filters need to be cleaned. About 1/2 of the vents in the ceiling are for the return air. The covers just pop off.
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Old 03-04-2017, 05:56 PM   #3
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There are a couple of items that should be done to keep roof AC working good. Should take AC covers off the AC unit once a year and clean condenser with either water or compressed air. You might find a bird's nest like I did on back AC unit. Good idea to add fender washers to the 4 screws that hold AC cover on. Newmar added 2 screws to the back of covers to hold cover on better. Good idea because you see the covers along the highway add 150$ plus paint. Need to clean intake air filters some times once a week if in dusty area in the coach. To check if AC is working good there should be a 20 degree temp difference between income air and out going. Have had our Essex for 13 years and AC and heat pumps have worked great for 1500 days of travel.
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Old 03-06-2017, 07:59 AM   #4
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My two cents:
Same as replies already for except one, I use Dometic coil cleaner, spray on coils and let sit for a few minutes and garden hose coils off. (Just did yesterday as a matter of fact) I do this twice a year.

Intake filters on my coach I clean regularly and I do while using coach. Pull off covers, remove filter, soak in sink with dish soap and then throw in my dryer with dryer sheet on low air and once dry then replace.
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