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 ...

After freezing temperatures descended on metro Phoenix and large swaths of Arizona, many likely were using their heater to keep warm, perhaps even for the first time this year. But if your heater was ...

If you need to purchase a gas-burning forced-air furnace but aren't sure how they work, here's what you need to know.