Use an infrared thermometer and check the difference between return air temperature and the supply registers. If you are getting 15-20 degrees difference, then AC is working. Your focus then will be using the thermometer to find where heat is coming in. Or figure out why that cool air isn’t coming into the main cabin.
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2021 Montana 3231CK, Legacy, Super Solar Flex, Dual Pane Windows, Slide-out Awnings, Flexarmor
2021 Dodge RAM 3500 4x4 Limited 6.7 HO DRW, Trailer TPMS, B&W Companion Hitch
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