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 ...

Replacing the old furnace in your central heating system with a new, more efficient model can offset volatile energy prices. (So far, it’s predicted that fuel costs will go up this winter.) Money ...