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Old 10-13-2014, 09:53 PM   #1
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Question Rooftop A/C

Sorry for newby questions........
can roof top air conditioners be serviced and or rechared?
Looking at an older trailer and am told the a/c works but isnt blowing very cool air, so would like to know what I would be getting into.
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Old 10-13-2014, 10:09 PM   #2
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They can be recharged, but there isn't a port to do it so they have to add one, by that time you're better off the change the whole unit as everything else is getting too old anyway and the expense is too high.
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Old 10-13-2014, 10:14 PM   #3
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Funny this topic came I just took a look at mine this weekend and noticed a thick layer of dust on the intake fins. I am skocked the thing works at all . I didnt thinkrealize the intake fins needed cleaning
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Old 10-13-2014, 10:26 PM   #4
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Ok, food for thought. Thanks
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Old 10-13-2014, 10:36 PM   #5
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if it needs a recharge, there is a leak.
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Old 10-14-2014, 11:40 PM   #6
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You might want take the roof cover off and clean the coils, sometimes I get away with compressed air but sometimes it takes the garden hose to get the crud off. Unplug the Camper if you use water, and spray only the coil fins.
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Old 10-15-2014, 01:23 AM   #7
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My old Jayco wasn't working too well and found that the condenser fins were all bent over. No air flow. Sat up there and straightened them and all was ok. There had been a hail storm.
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Old 10-15-2014, 07:14 AM   #8
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thank you for the responses.....
the trailer I am considering is a 1979 Komfort and it has been cared for like none other I have looked at so far......I will take all the advise given and eliminate all possibilities.
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Old 10-15-2014, 07:56 AM   #9
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Can they be serviced?
The most common service needed by a Rooftop (or window) air conditioner is cleaning,,, This needs to be done at least once a year if not more often,,, And that is a user doable job.. I have seen air conditioners ruined by lack of cleaning (thankfully only one was mine and it was cheap.. The replacement was also bigger).

Remove the top cover, then remove the cover on the condenser, and inspect, Odds are the fins are fully clogged.

A soft brush and compressed air work wonders (you can use water too but compressed air works better).

YOu may wish to open the evaporator compartment and clean it as well (if needed it has intake filters so does not need the same degree of cleaning)

If it is low on coolant... See above replies. Seriously though these things can run 10-20 or more years without a recharge Same as a residential fridge (Same system in fact) so if it needs re-charging, Something is wrong.
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Old 10-15-2014, 09:46 AM   #10
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Nice clean looking unit !!! Be sure to slide underneath with an ice pick and probe for rot, especially around doorways and corners ! I learned the hard way !!!!!

Jim
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