What should the temp rise be on a Ng Lennox Dimension 93% 2 stage
furnace from return to just at the AC coil with new filter, clean
squirrel cage and all ducts open and on low fire of a 2 stage. Mine is
67 in 137 out a 70f rise. Isn`t that to high indicating it is oversized
for the ductwork. I thought 50- 60 was inline. It is a bit oversized and
I am looking at less Btus on a replacement. The Lennox supposedly was
sized correctly as return and supplies were added.
This is Turtle.
Like Grego said the Temp. Rise should be on the furnace.
Also 70 degree temperature rise is very much on the top end of the
scale . i would like a 50 Temp. Rise or so for me but other opinions
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