Originally Posted By: kmcmahon This post was automatically imported from our archived forum.
Inspected a gas fireplace insert into a masonry chimney yesterday. Unit was a little smaller than the opening which gave me opportunity to view the flue. It was made of that aluminum acordian style ducting that is normally used for dryer ducts or bathroom fan vents.
I’ve never seen this used for a fireplace venting before. Is it acceptable? Lots of handyman work on this home, so would not be suprised if this wasn’t acceptable.
I wish I had a photo, but didn’t get back around to photograph it.
Originally Posted By: mlong This post was automatically imported from our archived forum.
Kevin,
yes that type of application is very acceptable (assuming it was installed correctly) and is quite common. If it is a B-Vent application there would be a single flex vent and if a direct vent application, which is currently the more common, it would have 2 flex vents. They could be both 3" diameter, 4" diameter, or one 3" and one 4" in some cases.
There are many manufacturers of these type of inserts, Heatilator, Heat-N-Glo, Kozy, Quadrafire, Jotul, FMI, Superior, Envirofire, Harmon, Breckwell, to name a few that I'm familiar with.
