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 ...

A very small number of Americans live in mountainous regions, which is why many HVAC professionals may not even know that gas-fired furnaces installed at higher altitudes usually require modifications ...

Judging by the number of emails I get from Canadians wondering (and worrying) about their gas furnace heating system, this is a hot topic. More than most nations in the world, we rely on modern ...