Re: OT: high efficiency furnaces, would like opini

Posted by Ed Hotaling on January 11, 2004 at 08:13:36 from (199.232.76.250):

In Reply to: OT: high efficiency furnaces, would like opinions posted by KURT (mi) on January 11, 2004 at 03:23:09:

I worked in the HVAC business for more years than
I care to remember. When the high efficiency
furnaces first came out, the folks installing them
tried to do it the same way as they did the old
50% efficiency units. The reason they got a bad
rap is that the installation instructions have to
be followed TO THE LETTER or you will have
trouble. Even the ones with big design flaws run
well if installed correctly.
As for your specific problem, that can happen with
any furnace, regardless of design. It sounds like
you have an old-school service man. The old school
guys I worked with tought me a lot, but I had to
learn to follow mfr's instructions on my own.
That said, I had more trouble with 80% furnaces
because of flue condensation. Again, the
installation makes the difference. If the guy
hooking it up thinks he's still working in the
1960's, you will have trouble. If the installer
does it right, any hot air furnace should last
between 15 and 20 years with regular maintenance
(above all else, KEEP THE FILTER CLEAN!!). Of
course, everyone makes a stinker and there are a
few that will go on for ages.
If you do change to a low-efficiency furnace, make
sure the flue is installed EXACTLY as the
instructions say or you will be very dissatisfied
with it.

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