On 11/24/2012 10:08 AM, The Daring Dufas wrote:
On 11/24/2012 7:02 AM, HeyBub wrote:
"Replacing an aging furnace could cost homeowners thousands of dollars
more
after May 1, when new federal energy efficiency standards take effect for
northern states, including New Jersey. The new energy-efficient
natural gas
furnaces aren’t that much more expensive themselves, but they must be
vented
directly to an outside wall rather than through the chimney, which can
increase installation costs dramatically ..."

Similar rules will latch in for A/C in the southern climates.

http://www.northjersey.com/news/berg....html?page=all


But, but, but ... it's for the CHILDREN !



Every installation of high efficiency condensing furnaces I've been
involved with has been vented through the wall with PVC pipe because the
exhaust temperature is so low. All of them have a draft inducer or power
vent if you want to call it that. So much heat is extracted that
water condenses in the combustion chamber and must be drained through
the same drain as that used by the AC evaporator coil. ^_^

TDD

Sure is bizarre to see PVC flue pipes.

The problem is if the outside wall is not near the furnace. An article
in the local paper said furnaces would be on the market soon that would
handle longer exhaust/intake pipe runs, which would eliminate (most of?)
the much higher installation costs.