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 ...

It's perfectly acceptable to have a high-efficiency furnace installed with one pipe. Just flip through the pages of any high-efficiency furnace installation manual and you'll find the answer. I'm ...

Shopping for a gas furnace? Read about types, features, and other must-know topics in our gas furnace buying guide to make an ...