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Old 06-21-2018, 09:29 AM   #1
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freon

How hard is it to check the Freon level and add some if needed?
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Old 06-21-2018, 09:40 AM   #2
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Chassis or coach AC?
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Old 06-21-2018, 09:43 AM   #3
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If it is an RV roof top..........no way to check \sealed units---no charge valves---throw aways
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Old 06-21-2018, 09:46 AM   #4
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...not to offend anyone but if you are asking the question, you are probably out beyond your "headlights" on this issue....typical newbie solution is to buy a can of 134a [not Freon] find the fill ports, throw in a can and see what happens....occasionally you get some temporary relief but usually the problems comes right back because your system is leaking....
As OB points, out this applies to automotive style chassis dash A/C; roof top A/C is a whole different conversation, and not very encouraging.....
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Old 06-21-2018, 10:02 AM   #5
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There are no connections for gauges on a rooftop ac. You can get a saddle tap that will sandwich over the line to connect a gauge. If it's low, you'll have to find the leak, evacuate it, fix it, vacuum it down, then recharge it. It's a complicated process that takes tools most don't have. What are your symptoms of why you think you need to look a that?



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Old 06-21-2018, 01:22 PM   #6
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-It my House ac unit I checked it yesterday and it did not feel that cool come out.
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Old 06-21-2018, 01:35 PM   #7
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How hot was it outside? Parked in the sun? 20 degree difference between inside and outside would be about typical.
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Old 06-21-2018, 04:54 PM   #8
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thanks everyone, do worry biscuit you did not offend me.
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Old 06-21-2018, 06:02 PM   #9
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OK--residential A/C is a totally different "kettle of fish," for one, port connecters, I believe, are different from automotive-type systems.....depending on age of system, refrigerant may also be different like 410A or whatever.....also, the 20 degree differential rule is with regard to difference between ambient indoor intake vs output air temps entering and leaving evap coil...eg, if house is 80 degrees, then output air temp would be around 60 degrees....doesn't relate directly to outdoors ambient air temps, except as with regard to system workload.... unless you have residential gauges and tools--generally not a DIY job......
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Old 06-21-2018, 08:51 PM   #10
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I guess I should have been more specific about the 20į temp difference between inlet air and outlet air. i was thinking fresh outside in and the temperature of the discharge air.
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Old 06-21-2018, 10:29 PM   #11
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Home A/C probably uses F22 Gauge to low side fill till about 60-65 psi shows.'

Heck, I get 20 degrees depression with my evaporative cooler here in the summer!
Have to turn it off at night, it gets too cold!
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