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View Full Version : CFM of old Tappan furnace----->>>>HELP!


James 3528
10-20-2005, 02:49 PM
GUF 105D42E5

Aprox. 1976 Circa
curry
10-21-2005, 01:26 PM
Try going to an Armstrong dealer. Not sure but they might be able to point yoou in right direction.

Barring that get the HP off motor and wheel size.
Measure the supply opeing and compare to other furnace literature of the era.

My gut tells me it is a 1400cfm furnace, but not positive.
James 3528
10-21-2005, 01:28 PM
Thanks but I have decided to go with a known replacement based on the out door tonage of the A/c
RoBoTeq
10-21-2005, 11:35 PM
Tappan didn't even have their furnaces set up for A/C as a standard feature back then. Is this one of their orange and brown furnaces? I used to install a ton of them but had to buy the fan relays as an option if I was also installing cooling.
James 3528
10-22-2005, 12:43 AM
Yes it is.
BaldLoonie
10-22-2005, 08:50 AM
Found it in the archives. curry's gut is right.
RoBoTeq
10-22-2005, 10:07 PM
Wow, there's still literature on that stuff, eh?
BaldLoonie
10-23-2005, 08:49 AM
In my private literature stock :D Amazing what I have accumulated...

http://www.johnmills.net/ht/44.jpg