HVAC Problem Center
What's wrong with my HVAC system?
Practical answers from the field: what usually causes the problem, what you can safely check yourself, and when it’s time for a professional evaluation.
Heating
Boilers
Cooling
Heat Pumps
Thermostats & Controls
Navien
Any System
Not sure what's wrong?
Tell us what the system is doing. We'll determine what needs to be evaluated.
A photo of the equipment, the model label and any error code is often enough to point us in the right direction before we arrive.