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Old 04-26-2016, 10:52 AM   #1
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Recharging roof AC

I was looking at one of my roof units to see if it had schrader valve connections but could not see one. The out put is down to less that 10 degrees difference at the output vent Does anyone know if you can recharge the roof units. It is a Coleman unit.
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Old 04-26-2016, 10:57 AM   #2
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Usually not, as you found there is no port. Tech would have to add one and usually by then the labor cost is as much as a new unit and you still have an old unit that something else might be ready to break.
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Old 04-26-2016, 11:15 AM   #3
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If it needs a charge, it's leaking.

With sealed compressors, that means piping, evaporator or condenser coil.

By then it makes sense to replace it.

Did you try to hose out the condenser coil.
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Old 04-26-2016, 11:23 AM   #4
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Twinboat is right.
In my former life in the Middle East we had dozens of roof and window AC units and did repair them on a regular basis. But, we had nothing but time and no new ones to be had. In the real world, all you can do is make sure it's clean and replace if required.
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Old 04-26-2016, 11:37 AM   #5
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Thanks
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Old 04-26-2016, 07:27 PM   #6
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Quote:
Originally Posted by cbdeajr View Post
I was looking at one of my roof units to see if it had schrader valve connections but could not see one. The out put is down to less that 10 degrees difference at the output vent Does anyone know if you can recharge the roof units. It is a Coleman unit.

cbdeajr
We stayed a week at a campground close to Elvis's place. One of the roof ac units stopped cooling. I called a hvac wholesale supplier in town and asked them to recommend a good moble repair company that could and would repair our unit and at the same time give us a fair rate. They did and I called them. He was impressed that the wholesale supply company recommended him and seemed determined to make us happy. He met me at the coach, fixed the leak and installed a charging port, and filled it with 410A. $125.00. The repair was done June of 2014 and it continues to work well.

The tech may also find out that it is something other than low freon.
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Old 04-26-2016, 08:53 PM   #7
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Thanks Jesse
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