Many things can be at fault when a furnace is not blowing hot air but only blowing cool. You can look at and fix a few things on your own before you call an HVAC technician for a house call. But you ...

Furnace short cycling occurs when heating systems run for less than 5-7 minutes per cycle instead of the normal 7-15 minutes, causing comfort issues and equipment damage. The top five causes include ...

Check thermostat settings, filters, and fuel supply first when your furnace blows cold air. Call an HVAC technician for issues like sensor failures, clogged burners, or duct leaks. Skipping routine ...