There's no problem with a one-pipe system, but the rules for venting are different. I've read dozens, maybe hundreds of high-efficiency furnace installation manuals. Every single one of them had ...

Residential gas-fired equipment is changing and so are the related codes. As efficiencies and energy factors creep up — whether organically or because of regulation — the installation processes and ...

The concept of the “high-efficiency furnace” in popular consciousness dates back to the 1980s. That’s when the National Appliance Energy Conservation Act of 1987 required all new furnaces be 78 ...