Mach 15 a/c not cooling well
I have a 2020 travel trailer with a coleman mach 15 in a 33ft travel trailer, with 2 bedrooms. In the back bedroom I have a portable a/c with the door shut, that room is no concern to me other than it...
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we have a 33ft double slide trailer with a MachIII 13.5K BTU AC. really should have two AC units. As it came from the factory cooling was definitely sub optimal. However with a few fixes it now will keep the trailer in the mid 70's with outside temps in the 90's as long as the AC comes on when temps inside hit 72/74. No way it will cool down the trailer with those outside temps.
My mods:
1) took off the inside AC cover and closed up all the leaks in air gaps with metal tape.
2) removed all the ducted vent outlets and again, sealed up the gaps with metal tape.
3) they put a minimal number of air vents, but typically run the plenum to the end of the trailer. So, I added a second vent in the bedroom, a vent to the bathroom on the same run, and 3 more on the living area plenum.
4) replaced all the factory celing vents with an areo vent which is much easier to adjust and blows the air horizontally in a circle rather than straight down.
All these changes made a huge improvement. Still is marginal but as long as the AC comes on at 72-74 it will keep the temps in that range with daytime highs in the mid 90's. Now we are in western oregon so we don't get high temps till afternoon. If I was somewhere that had temps in the 90's by mid morning, not sure it could keep up.
My mods:
1) took off the inside AC cover and closed up all the leaks in air gaps with metal tape.
2) removed all the ducted vent outlets and again, sealed up the gaps with metal tape.
3) they put a minimal number of air vents, but typically run the plenum to the end of the trailer. So, I added a second vent in the bedroom, a vent to the bathroom on the same run, and 3 more on the living area plenum.
4) replaced all the factory celing vents with an areo vent which is much easier to adjust and blows the air horizontally in a circle rather than straight down.
All these changes made a huge improvement. Still is marginal but as long as the AC comes on at 72-74 it will keep the temps in that range with daytime highs in the mid 90's. Now we are in western oregon so we don't get high temps till afternoon. If I was somewhere that had temps in the 90's by mid morning, not sure it could keep up.
