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 ...
Don't spend the winter shivering. Set your thermostat to the right temperature to stay comfortable and save money all season long. Mike De Socio is a CNET contributor who writes about energy, personal ...
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