On Monday, December 2, 2013 12:26:27 AM UTC-5, Tony Hwang wrote:
That's what companies are counting on. Dummies like you.
It's a 20 year old furnace. How long is "very long' and
even if the part itself is covered, by the time you factor in that labor
rarely is included, nor are other charges like miscellaneous parts,
the rest of it is still 20 years old, etc. it
rarely makes sense to put a new heat exchanger in a 20 year old furnace.
On 12/2/2013 9:56 AM, email@example.com wrote:
tell you what they think and why. You'll learn a
lot more by doing it in that sequence!
"It's cold in here. Do you think it might need
a new thermostat" is a good way to start with the
Went to a couple friends, one time. House was hot.
Find out they were on their 4th thermostat, and
hadn't got it fixed yet. Yep, fourth, 4th. Wow.
On Sunday, December 1, 2013 2:04:42 AM UTC-5, Big Giant Head wrote:
They all force the conditioned air past the heat exchanger for just the safety reason you figured out. I'd start shopping now for a new furnace since your's is that old.
Not that I'll take responsibility for what you do about the old one but I have seen heat exchangers in such bad shape that when the circulation fan started up it blew the flame all over the place.
Yeah, that's what the guy was telling me. I guess I never looked closely
at other configurations.
It's going to get replaced in a matter of days. Meanwhile I am keeping
an eye on things and have the two CO alarms.
I'm fine with how things are for a few days. It did occur to me that one
could partly restrict the venting into that area of the furnace creating
a very slight vacuum which would ensure that any blowback gases would get
sucked into the other burners and vented out. But that would be stupid
as reduced air only increases the likelyhood of CO production. I'd bet
right now there's almost none. I won't mess with it. It would be funny
if there were access points into the HE and someone stuck a CO probe into
each and found that the channel that appears to have the issue was
actually making less CO because of that additional air. We'll never know
but it's possible. Secondary air they call it in other industries.
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