I recently had a new heat pump installed. The installer did a good job but
one thing is concerning me. I had them install a VisionPro thermostat and
an external thermometer to control the crossover from heat pump to
The problem is, they installed the thermometer inside the service cover of
the outdoor compressor unit. When it is cold out, and the compressor has
been running, the temperature reads about 10 degrees too cold. I assume
this is because of where it is mounted. However, this is one of the
installation options listed in the outdoor air temperature sensor manual.
Am I being too picky? Or should I ask them to mount it on the side of the
house? Technically they did mount it in one of the recommended locations,
but I think it would be more accurate on the side of the house.
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