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 ...

John Krol of Phoenix would like advice on the type of humidification system to add to a forced-air furnace as well as the pros and cons of adding a system, how much it will cost, and recommended ...