When we bought our HC, it had 1 A/C. The one in the main living area. In 2016 my wife needed to spend the summer in southern Missouri to be near her parents who were just admitted to a nursing home.
That A/C burned out. When we had it replaced, I also had a second one(13,500BTU) added to the bedroom. She still had to place blankets over the window blinds to help keep the heat out.
This A/C combination has worked pretty good as long as we stayed in the U.P. or northern climates where we didn't need to cover the windows.
A couple of years ago I went thru the system and made sure the intake and exhaust sides of the A/C were separated and sealed. I also found a break in the ductwork in the ceiling that I was able to access and repair by removing the galley ceiling exhaust fan.
I also discovered the ceiling vents were sticking up into the ductwork by an inch. The ducting is only 2" tall to begin with. I cut the vents down to flush with the bottom of the ductwork to eliminate restrictions.
We are now in South Dakota working our way back home to the U.P. Since we left at the end of July it's been in the high 80's to mid 90's everyday. I close the vent in the bedroom and almost close the one in the bathroom. And we keep the bedroom door open and the bathroom door closed
And we are roasting.
I believe a lot of the problem is having single pane windows thru out. I just used my laser temp gun to take some readings.
First, outside temp is 88 with an 18 mph wind, gusting to 27.
Intake - 78
Exhaust - 64
Inside temp from an inside wall - 79
Ceiling - 82
Wall opposite sun - 83.5
Wall in sun - 86
Slide out ceiling - 88.5 (we have slide toppers)
Slide out wall - 85
Window blind - 88
We are starting to look at new units due to this little girl starting to show her age. We will be looking for something with 3 A/C's and double pane windows.
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A rainy day campin' is better than a sunny day workin'.
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