I have a Bryant Plus 90 which has a clogged heat exchanger. Bryant is
refusing to replace it since they say it was caused by "bad gas."
Anyone else having this problem with Bryant not honoring their
warranties? I told this to our gas company and they said it is Bryant
and not them. Anyone know how to approach this problem?
As a Bryant dealer that has installed many Plus 90's and never had a
Are you running the unit on LP or natural gas? How old is the unit, what's
the model and serial number? I would first rule out the quality of the gas
rather than automatically take the word of the "gas company." Then there
are installation and set-up issues that have to be dealt with. Let me know
what area you are in, is it your installer/service company that's telling
you the warranty is refused or have you spoken directly with Bryant?
We are running LP.
It was the company who installed it about ten years ago.
Have not taken it up with Bryant as of yet.
I am in Middle Tennessee - Tullahoma area
Model Number Is 350MAV036080
Serial Number Is 3096A02364
I don't believe a word of it. Do you realize how regulated the propane
refineries are? I think its a poor install.
Propane gas is regulated, more than United Technologies is regulated who
made your furnace.
A plugged heat exchanger is due to a possibility of several things, and most
are on the installers side with poor installations.
I would DEMAND to see a letter from Bryant stating 'bad gas', you will never
Sooting or plugging of a heat exchanger can be the result of, but not
Flame impingement, this is where the flames are hitting/touching the heat
exchanger and this causes sooting
Gas pressure too high so the oxygen mixture is too low and this allows
Poor scrubbing within the heat exchanger causes sooting, this is when the
air & fuel do not mix well, like oil burning by itself, it is smoky.
Lack of combustion air, this is a biggy. Did they run the fresh air pipe for
combustion outside? Does it exceed the maximum amount of feet for the pipe
with the number of elbows they installed? Even if the furnace runs and has a
cut out switch for lack of combustion air it still could be lacking air
Contaminated combustion air, are they taking it out of the crawl space which
is damp or an attic instead of the outside?
Oversized furnace can cause sooting with propane. This situation causes the
furnace to cycle a great deal and never get to operating temperature for
Too cold of a return air causing the heat exchanger to be too cold on start
up and the fumes condense and then soot up over time.
Notice that their is only one thing I mentioned that the factory can be the
trouble and everything else is the installer or the gas? I doubt VERY
seriously that you have 'bad' gas!
Ask to see the combustion analysis of the unit when it was started up, what
the Oxygen, CO, and CO2 was, I bet they won't even know what your talking
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.