Alex and Tee wrote:
Doug - thanks for your input. The digital thermometer I used is a Jumper digital thermometer. The “House” symbol indicates object measurement mode. It seems to be accurate with other similar type measurements. The readings I got were taken right at the vent with both a/c’s running. Although this is not perhaps the right tool to use it’s what I had and I doubt it would be 20 degrees off.
I have the mobile tech from La Mesa RV coming next Saturday to fix my reversed furnace wiring and some other things. I will have them check both a/c units while they are here. I would imagine they have a more appropriate measuring device for the application.
My google search of a Jumper Digital Thermometer indicates it is a IR/thermal type Medical thermometer. Which, I stated you CANNOT use. IR thermometers CANNOT sense AIR. They sense solids. Reversed Furnace wiring????? How did you determine that? Not what may be causing your cold problem, just want to know what your furnace problem is and how you determined it is reversed. Doug