Bob is a service technician who is well trained and nationally certified. However, he has sometimes suffered from the same confusion that all technicians occasionally do — the facts that he gathers ...

Skipping the manufacturer's instructions during installation may result in a furnace that fails within six months or less. For example, heat exchangers can crack from improper venting, and gas valves ...

Q. When I installed gas heat I included a humidifier on the hot air furnace. Now the unit leaks water on the basement floor. The installers adjusted filters or something without success. How can I ...