Stainless Flue Liner

[Peacock]

Had a mason recommend a stainless steel flue liner for an older brick chimney used by a newer oil furnace. This is not common and I question the need. Any thoughts?

[Brandon Chew]

What reasons did he give for needing one?

[Peacock]

Sorry, don't have the answer for that. My customer called to ask about this after I had recommended chimney repairs.

[paul burrell]

The Mason is correct. My HVAC company says they are mandatory for new installations.

Paul B.

[Brandon Chew]

It might need a liner if the old flue was damaged enough to warrant a new liner instead of fixing the existing one, or if the existing flue is oversized for the new furnace.

[hausdok]

Agree with the comments above. However, he's probably selling the SS liner and extolling a 50+ year service life. A SS liner costs about $1500 to $2000 here and an ordinary galvanized steel liner costs about $700 to $800 and will last about 15 years. Since the actual cost of the material isn't that much different, the guy installing the liner is benefitting the most from the installation of a SS liner because his profit is far greater.

OT - OF!!!

M.

[carle3]

One other thought here. If the original flu was for more than one appliance its ability to create a good draft my be compromised by the newer furnace with a lower exhaust temperature. This could result in back drafting issues under the right conditions and my be why the recommendation for a liner although I do aggree he is trying to sell a Cadilac repair.