I have been having problems for the last 2 years with a burned exhaust
odor from the heat ducts when the furnace is running. It is more
noticable if I shut the furnace down before it reaches the temperature
that the thermostat was set for. I have had numerous technicians come
and check the furnace out, but they all say it is OK. I even replaced
the exhaust pipe to the roof, as well as the fuel lines just to make
sure they were not the cause of the problem. My furnace is a Miller
Kerosene furnace set up for 100,000 BTU's. It supposedly can be set up
for either 80,000 or 100,000. I'm wondering if 100,000 is too much for
the house, the old furnace was 100,000 but was also 20 years old and
not as efficient. Any thoughts on this situation would be appreciated.
your furnace is probably over-fired and consequentially the hx has
been breached. time for a new furnace, installed by a competent
installer who has performed a load calc to precisely determine what
size of furnace is req'd.
Dildo, please explain to rest of us how a dirty "smoke stock" will create
odours in the hot air plenum......
I assume it is just as complicated as your advice about closing the return
air on the second floor in order to cool it!
The smoke stack was replaced just last year, and the air intake is
clear. One of the technicians said that it's possible that it isn't
getting enough air, but it is the same make and model of furnace that
was in the house when we bought it, and we never had problems with it
YOU SHOULD BUY OR BARROW A CO2 ANALYSER FROM SOMEONE CO2 IS THE BEST
WAY TO DETECT INTERMINTANT LEAKS IN A HX
WHEN YOU NOTICE THE SMELL COMAIR THE LEVELS WITH A LOG OF LEVELS AT
NORMAL CO2 SHOULD NEVER BE HIGH THEN 1000PPM ABOVE OUT DOOR AMBIENT IF
YOU SEE A RISE THEN YOU HAVE A LEAK THE HX NEED REPLACED IF NO RISE
THEN YOU MAY HAVE BECOME HYPERSENSITIVE TO THE CUBUSTION OR FUEL VAPORS
SMALL AMOUNTS CAN CAUSE BIG PROBLEMS IF OTHERS IN THE HOME DO NOT
NOTICE IT THEN THIS COULD BE THE ISSUE IF NOT YOU MAY BE GETING PUFF
BACK THREW THE RETURN THIS ALSO COULD BE THE CASE YOU ALSO COULD BE
DEPRESSURISING THE COMBUSTION AREA MAKE SURE RETURNS ARE SEALED I WOULD
HAVE A CIE TECH COME IN AND DO AN IAQ AUDIT OR REPLACE THE SYSTEM DONT
PLAY AROUND WITH THIS SMALL LEAKS ARE SOMETIMES A BIGGER DANGER THEN
LARGER THEY CAUSE CRONIC HEALTH PROBLEMS THAT GO ON FOR LIFE NEVER
I AM NOT TRYING TO BE A MEANIE TO YOU BUT FOR SIX TIMES I HAVE TRIED TO
READ YOUR POST BUT HALF WAY THROUGH I FEEL LIKE I WAS DRINKING ELECTRIC WINE
AGAIN AND HAVE TO START OVER AND OVER. WHO EVER SHOWED YOU HOW TO TYPE WAS
BEING VERY MEAN TO YOU.
I have 2 CO detectors, one with a digital readout, and they have not
once gone off. I don't smell the odor, my wife does, so it's hard for
me to describe it. She tells me that it's more of a Kerosene odor than
it is an exhaust odor, could it be the furnace is burning too rich? I
have the numbers that were generated by the last smoke test, if that
would help anyone with a diagnosis.
Old CO detectors wont detect anything. See how old they are. Early
ones lasted 3 yrs. Newer ones last 5.
Your wife isnt smelling CO. Its odorless.
Maybe she is just silently farting.
"Lick a window"
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