Quote:
Originally Posted by twindman
I have used a laser thermometer and it works ok. I shine it on the plastic on the intake and the output ducts. I get 15-20 degrees difference. All this talk about air flow,etc is premature until you know the A/C unit is cooling properly.
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If the laser thermometer is accurate, when aimed at the opening of the vent it's pretty spot on to the temp I have the thermometer set at.