Quote:
Originally Posted by nmcmilla
Thanks, this is what I think I need to do. My AC is blowing air that seems not that much cooler than what my roof top unit blows when set to it's "fan" setting.
I imagine you need a special thermometer for this test?
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Almost any thermometer that is convenient to hold and read while in cold air stream (A/C discharge) will do the trick. It doesn't even have to be all that accurate or calibrated because you're just looking for the difference between temperatures. If the A/C is working you'll know pretty fast.
Some thermometers will start to warm up very fast once removed from cold air stream, so best to read temperature before pulling away from A/C discharge if at all possible.
It does help to have one with the right range, so best to avoid using one that goes up too high like those made for cooking that are designed to read temperatures in the 100s of degrees F. Since you're only looking for a difference of about 15 degrees F or less, one that only goes up to about 120 F should work fine.
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