High eff furnace vent

Posted by jeddoman on May 11, 2009, 1:10 pm

-------------------------------------

Should the PVC intake and exhast lines for my hi-eff furnace have screens
over them, or will it effect the air flow. What stops birds from building
a nest in either of these 4" pipes?

Thanks.

##-----------------------------------------------##
Delivered via
http://www.thestuccocompany.com/
Building Construction and Maintenance Forum
Web
and RSS access to your favorite newsgroup -
alt.hvac - 28484 messages and
counting!
##-----------------------------------------------##

Posted by Lefty on May 12, 2009, 1:38 pm

Manufacturers' recommendations are *the* gospel when it comes to such
questions.
Your equiptment is no longer UL listed or approved by any underwriter unless
those instructions are followed to the Tee.
There is no room for after-the-fact-engineering in dangerous equiptment
installs.

HTH

> -------------------------------------
> Should the PVC intake and exhast lines for my hi-eff furnace have screens
> over them, or will it effect the air flow. What stops birds from building
> a nest in either of these 4" pipes?
> Thanks.

Posted by geothermaljones on May 12, 2009, 10:34 pm

Screens?
No!
1/4" Hardware Cloth, Yes!

Effect Flow?
Screens definitely
Hardware Cloth some/not much

Stops Birds?
Screens Yes
Hardware Cloth Yes
CO yes, run furnace all summer.
Cats tied to flue, for a while.
Feed cats when birds run out...

goodluck
geothermaljones

> Should the PVC intake and exhast lines for my hi-eff furnace have screens
> over them, or will it effect the air flow. What stops birds from building
> a nest in either of these 4" pipes?
> Thanks.

Similar Threads	Posted
furnace vent tube in wall and stove hood vent	March 13, 2007, 11:12 pm
Trane Nat. Vent furnace	December 1, 2006, 9:13 am
Furnace vent question ...	July 4, 2008, 9:30 pm
(bought furnace off internet now it wont work )New High effiency Furnace dual fan temp goodman ny hvac duct	December 8, 2006, 9:55 pm
Insulating gas furnace warm air vent	February 12, 2007, 9:31 pm
Retrofit existing gas furnace with power vent?	August 25, 2007, 2:46 pm
B vent compatible with standard vent duct?	April 13, 2007, 5:08 pm
80% gas furnace RUUD in a icyenene foamed attic - Need a combustion air vent solution	March 15, 2009, 9:26 pm
Question about high efficiency Furnace Exhaust	January 16, 2007, 10:48 pm
High Efficiency gas furnace - return air temperature	January 19, 2007, 12:12 am