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 ...

Whether you're wondering if you accidentally switched on air conditioning mode to fretting that your home's heating system is about to break down, nothing sends a chill down your spine like the ...

Loud furnace noises and their causes . All furnaces make some noise during normal operation, including soft hums and gentle ...

man with open furnace unit attempting to fix it while reading directions from a tablet - Gregorbister/Getty Images Whether you're wondering if you accidentally switched on air conditioning mode to ...