Frequently Asked Questions for Fireplace and Stove Venting

Frequently Asked Questions

If it is an outside wall that does not vent out into a screened in porch or area. Gas fireplaces and stoves, and pellet stoves can be vented directly out the wall. Electric does not need venting. Wood MUST BE vented through the roof.

How does wood stove venting work?
- Inside the house it can be single or double wall stove pipe, but once it hits the roof it must be Class A 3100 degree chimney pipe (which is at least double wall).
How do elbows work?
- Elbows allow you to turn and angle the pipes. Gas can use 45 or 90 degree elbows. Wood can not use anything bigger then a 30 and if an elbow is used with wood venting (stove or fireplace) you must use a second elbow to return the pipe. You can not link elbows directly together. Always put at least one elbow on the estimate, preferred two. Just in case it isn’t directly straight (sometimes builders are wrong).
Can two fireplaces share the same chimney?
- Two fireplaces can be put back to back (if they want to do that instead of a see-though) but they must have separate flue, with separate vents, they must be at least 15” apart. And one termination cap has to come up 15” higher then the other.
How do Heat Zones work?
- Certain fireplaces (Constitution, Cerona, etc.) allow for there two be a maximum of two “heat zones” off of them. Basically, this means you can vent the heat into two other areas of the home. The maximum amount of venting it can go is 40’ from the fireplace, THIS INCLUDES THE RISE AND RUN. The area may be within a 40 foot walk of the fireplace, but the rise and run may disqualify it.
Do I need an outside air kit?
- An outside air kit, AK22, is required for A36, A42, and SC60 models.