|
|
Thread Tools | Search this Thread | Display Modes |
|
|
#1 |
|
Pittsburgh
Guest
Posts: n/a
|
Existing 80% Staying, Replacing Gravity W/ 90% Venting Question
I am buying a house that's been split into two apartments. One apartment has a new 80% furnace. The second apartment has an old gravity furnace that I am replacing with a 90% furnace. Both of the existing furnaces vent into the masonry chimney. I don't think that there is a condensation problem now since the gravity exhaust is so warm. However, when I install the 90% furnace, what is my best venting solution? Stainless Steel flue liner? Or can the 80% and 90% both go out a PVC vent?
|
|
|
|
#2 |
|
Pro
Join Date: Dec 2003
Location: MA
Posts: 438
|
Re: Existing 80% Staying, Replacing Gravity W/ 90% Venting Question
90+ is a seprate flue to the outside, do not connect to the flue.
Leave the 80% where it is just block off the old opening where the old unit connected. Benie |
|
|
|
|
|
#3 | |
|
Unregistered
Guest
Posts: n/a
|
Re: Existing 80% Staying, Replacing Gravity W/ 90% Venting QuestionQuote:
|
|
|
|
|
#4 |
|
Pro
Join Date: Dec 2003
Location: MA
Posts: 438
|
Re: Existing 80% Staying, Replacing Gravity W/ 90% Venting Question
Is the flue on the inside of the home? if so no liner is needed.
However if the flue is on the outside of the home, you may need a liner as the flue will not be heated by the old unit. Bernie |
|
|
|
![]() |
| Thread Tools | Search this Thread |
| Display Modes | Rate This Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Basement Window Question | gregt848 | Windows, Siding and Doors | 9 | 07-26-2006 06:29 PM |
| Roof venting question (help!) | happy_will | Roofing | 9 | 03-18-2006 03:41 PM |
| Venting 80% furnace & water heater | Unregistered | HVAC | 7 | 02-11-2004 06:13 AM |
| Go to Page... |
