Key Points 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 ...

Pay attention to furnace smells. A metallic or burning odor could mean overheated electrical components. A musty smell ...

Q: I turned on my furnace for the first time this year, and it made the whole house smell musty. I checked the filter and found it caked with dust, so I replaced it with a new filter, and the indoor ...

Replacing a dirty air filter is simple and less time-consuming. If you want to keep your house comfortable during absurd weather, replace the filters to get fresh air to breathe. Having your own house ...

If you notice an unpleasant burnt oil smell in your home, check your furnace. It could be a simple fix, or it could mean call an expert right away.