I have a remote temp sensor outside under my curb side slide and it was showing 96 degrees outside a little while ago. I was nice and cool inside so I decided to see what the air temp was coming out of my a/c's. I used a Klein Infrared Thermometer and my rear 15K a/c air was 63 degrees, while the air from my front 13.5K a/c was 62. The temp for both was measured right at the air grill. Most of the air for both is ducted, but I opened the grill just enough to get a little flow through and then measured the temp of the grill after it had time to cool down with the flowing air.I'm pleased.

You could also measure the return air temp. Should be about an 18 degree differential.

Since it's not possible to measure the temperature of air with an infrared thermometer you actually measured the duct plastic temperature most likely. This means the air itself was probably a little cooler that your measured temperature. Good job.

To determine the differential you measure the return air & output air. Not the outside temp. :)

Sounds about right and your ACs are functioning as designed. On really hot days it pays to start them early making it easier for them to keep up in the heat of the day.

RV air conditioners are suppose to reduce the temp about 20 degree. The temp differential has nothing to do with outside temperature - both intake/outflow are measured from the inside of the RV. You don't need anything fancy to measure the temp differential. Outside temp obviously has has a significant impact on interior temp but that varies from rig to rig based on insulation, shade, etc.

How Are My A/C's Doing? | Good Sam Community

filrupmark
Explorer
Jul 15, 2016
I believe they are working fine.
ksg5000
Explorer
Jul 15, 2016
RV air conditioners are suppose to reduce the temp about 20 degree. The temp differential has nothing to do with outside temperature - both intake/outflow are measured from the inside of the RV. You don't need anything fancy to measure the temp differential. Outside temp obviously has has a significant impact on interior temp but that varies from rig to rig based on insulation, shade, etc.
Sandia_Man
Explorer II
Jul 15, 2016
Sounds about right and your ACs are functioning as designed. On really hot days it pays to start them early making it easier for them to keep up in the heat of the day.
tvman44
Explorer
Jul 15, 2016
To determine the differential you measure the return air & output air. Not the outside temp. :)
sch911
Explorer
Jul 15, 2016
Since it's not possible to measure the temperature of air with an infrared thermometer you actually measured the duct plastic temperature most likely. This means the air itself was probably a little cooler that your measured temperature. Good job.
Mandalay_Parr
Explorer
Jul 15, 2016
You could also measure the return air temp. Should be about an 18 degree differential.

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