In this troubleshooting situation, the equipment is a package unit heat pump, and the customer has called for service because although they have the thermostat set at 74° F, the temperature in the ...

This troubleshooting situation is actually a look ahead to the upcoming cooling season. Our customer has called to say that their heat pump “isn’t cooling at all,” and while the outdoor temperature is ...

In early July, when temperatures were rising to the 90s, my smart thermostat, a Nest Gen-4 model, shut down completely in the worst timing possible. None of the quick fixes I had used when testing ...