All Questions
1 question
0
votes
2
answers
6k
views
Can I have a shared exhaust flue for a high efficiency furnace and tankless water heater?
I recently purchased and am installing a 96% efficiency two-stage gas furnace. The old unit was an 80% efficiency unit using a 4" metal flue. This flue merges the exhaust of both the hot water heater ...
- 231