Air Conditioner is not cooling the trailer

fla-gypsy wrote:
The amount of incorrect information on this forum is incredible.

I could not agree more.

The leaving air temperature on the a/c unit should be 18 to 20 degF cooler than the entering air temperature...NOTHING to do with the outside ambient.

In 90 degF plus temps, I doubt if a 13.5KBTUH unit will keep a 29' plus RV cool in full sunlight. A 15KBTUH unit will help.

How old is the RV and are the filters clean? Is the evaporator coil clean? Is the return air side properly sealed from the outlet air side?

Take you temperature reading with a thermometer and not infrared temperature gun. The infrared will not read air temperature. It will read the temperature of the material near the air.

Ken

some complex math and thermal engineering could help here,

heat gain compared to the units cooling ability

I had mine parked in my back yard, with the direct sunlight hitting the back side and tail end (most windows) it was only maybe 93, 94 degrees out, and the ac could not get the temp down more than 5 or 6 degrees, the sun moved behind some trees in the early evening and within an hour the temp in the unit dropped down to 72.
now if this thing had 3 inches of spray foam insulation in the walls and floor, and 4 in the ceiling, double pain windows with a uv reflective coating. a bowl of ice cubes on the dinette would cool the unit down.

Wouldn't it be nice!!! the better built RV

The amount of incorrect information on this forum is incredible.

I am biased as a Floridian, but Arctic Fox does not build a single 5th wheel model that would cool sufficiently here with anything shy of a 15000, and that would just do a 27 footer. Any longer and I would require 2 AC units. 102 degrees is not messing around, you need some significant cooling power. I have a 41' TH and the front is essentially a 27 foot fiver, and I had to replace a 13,500 with a 15,000 for the front area, and run another 13,500 in the 14 foot garage. Remember our "4 season" RVs also use the cooling in the basement areas as well. Down here I am in a shaded spot with temps in the high 90s daily, and I would freeze up the relatively new 13,500 unit every afternoon trying to maintain 74 degrees inside.

You may have other problems as well but I would not hesitate (heck I would DEMAND) to run a 15,000 in that coach. I was told the same crud as well that I can only expect blah blah degrees under outside, but on a 98 degree day I can have our coach 66 inside now no problem.

is it acopleman or domestic ? Have you pulled the inside cover to verify it is sealed to the ducting?

You may want to run your question past these guys.

That's right, the AC is just design to lower the temp around 20 degrees lower then the outside air.

How cool is the air when it exits the unit? Don't expect over 15-20 below outside temp.