Calgarypuck Forums - The Unofficial Calgary Flames Fan Community - View Single Post

sclitheroe · 12-05-2010, 07:29 PM

Why do high efficiency furnaces need changes in venting, and why specifically PVC piping? I've tried googling it, but nothing so far..

Edit: found the answer. High Efficiency furnaces extra so much heat from the exhaust that you'd end up with condensation forming in regular flues, and that condensation, because it has combustion by-products, is corrosive.

12-05-2010, 07:29 PM	#26
sclitheroe #1 Goaltender Join Date: Sep 2005 Exp:	Why do high efficiency furnaces need changes in venting, and why specifically PVC piping? I've tried googling it, but nothing so far.. Edit: found the answer. High Efficiency furnaces extra so much heat from the exhaust that you'd end up with condensation forming in regular flues, and that condensation, because it has combustion by-products, is corrosive. __________________ -Scott Last edited by sclitheroe; 12-05-2010 at 07:45 PM.