Add Yahoo as a preferred source to see more of our stories on Google. hands testing heat near furnace - sergey kolesnikov/Shutterstock Cold temperatures outside are to be expected during the winter ...

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 ...

As temperatures drop, your furnace becomes the unsung hero keeping your home warm and comfortable. But like any hardworking appliance, it can run into trouble, especially after months of sitting idle.

Changes in the temperatures outside may have you fiddling with the thermostat inside. During certain seasons, you may want to set your thermostat to a specific temperature to save on your energy costs ...