We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › A: Cold house aside and chattering teeth aside, a malfunctioning home furnace could ...

The customer in this particular troubleshooting situation is somewhat savvy about his 12-year-old gas furnace. When he calls for service, he tells you that when things got very cold in the house, he ...

Forced-air heat is generated at a central furnace and is then distributed and delivered to the conditioned space via a duct system. A properly designed heating system will generate quiet, filtered, ...

I understand that our natural-gas furnace will not operate during power blackouts because there is no power to the electric fan. Power to the furnace is via a direct line; there is no plug. Given ...

Lee Wallender is a home improvement writer of nearly 20 years and specializes in home remodeling, repair and maintenance. Sami Allen is the managing editor at Forbes Home, with over seven years of ...