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Old 07-06-2024, 08:20 AM   #1
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Desperate for Cool Air

For the life of me, my AC won't cool beyond 84 degrees. Anyone know why???
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Old 07-06-2024, 09:03 AM   #2
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If I'm reading the outside temp at 119 you can't expect much more than that. If you're getting a 15 to 20 degree drop across the coil (room temp 84, air coming out of vent 64/69) it's running as it should.
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Old 07-06-2024, 01:31 PM   #3
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You're almost asking the impossible! I'd say you're about as good as you're going to get. Which is a heck of a lot better than 119.
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Old 07-06-2024, 01:37 PM   #4
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As said, you basically get a 20 degree drop from inlet to outlet. About the only thing you can do is turn the AC on as early as possible so the inlet air is cooler resulting in cooler outlet air. May help for a short period.

Other factors include how often the door is opened and how much light is coming in through the windows. If possible put up some shading.

Air movement makes it seem cooler for a given temp. Add a fan to blow the air around.
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Old 07-06-2024, 02:19 PM   #5
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As a last resort, pray for rain!
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Old 07-06-2024, 03:13 PM   #6
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For the life of me, my AC won't cool beyond 84 degrees. Anyone know why???
With an outside temp of 119, you’re joking, right?
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Old 07-06-2024, 03:22 PM   #7
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1% Humidity?
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Old 07-06-2024, 03:24 PM   #8
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As a last resort, pray for rain!

Then it is 95 with 90% humidity.


My daughter and family are in NYC right now. The temp was 90 felt like 95, with 85% humidity. Light rain at times.
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Old 07-06-2024, 04:13 PM   #9
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I would go somewhere that has a lower outside air temperature. But 84 inside temperature is not that bad. It might cool off when the sun goes down, if your lucky.
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Old 07-06-2024, 04:29 PM   #10
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Ummmmm….
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Old 07-06-2024, 04:44 PM   #11
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Our heat index today is 102*.
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Old 07-06-2024, 04:49 PM   #12
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Our heat index today is 102*.
Lucky you!.....
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Old 07-06-2024, 06:48 PM   #13
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As a last resort, pray for rain!
In the Souther Calif Desert??? Thats a lot of praying
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Old 07-06-2024, 06:50 PM   #14
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1% Humidity?
Desert.... Dry as a bone
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Old 07-06-2024, 06:50 PM   #15
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Our heat index today is 102*.
pretty warm for SC
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Old 07-06-2024, 06:56 PM   #16
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pretty warm for SC
Nice and humid too!
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Old 07-07-2024, 04:11 AM   #17
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For the life of me, my AC won't cool beyond 84 degrees. Anyone know why???
20 degree reduction is what you can expect. The A/C can't do the impossible sitting on top of a box, in the direct sun, with the trailer box R value no better than about 7-8.

If camping in the desert is a regular thing for you, look to add a second A/C unit, if your rig has the capacity to do so. If not, it is what it is. Keep shades down, apply thermo backer/reflect stuff to back side of shades. Keep door open/close to a minimum and get that A/C pumping early in the morning, even if you don't need it. Get a couple countertop/stand fans running.

If you're not satisfied, consider a 2 A/C unit camper. Even my smallish 22rb is 50amp, with the ability to add a second direct air, A/C in the bedroom.

Here is CT we are dealing the opposite. 91% humidity. It's like a swamp out there. My sister is using my camper at the beach this week. She said she stayed inside most of the day yesterday, reading books and catching up on her favorite shows.
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Old 07-07-2024, 06:25 AM   #18
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We are used to heat and humidity on the coast but I think everyone is experiencing more of both this summer. Just glad we are not in South Texas today!
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Old 07-07-2024, 08:42 AM   #19
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In the Souther Calif Desert??? Thats a lot of praying
As the song goes “It never rains in Southern California, it pours, man it pours”
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Old 07-07-2024, 08:46 AM   #20
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Desert.... Dry as a bone
It is a dry heat until the monsoon sets in then it isn’t. We often have dew points in the minus range.
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