What temperature should air coming out of the heat exchange be? Is 113 degrees correct or should it be between 120-125 degrees?

Answer

The fan limit switch should tell you what range the temperatures should be running in. EX- 130-160 degrees may be stamped on it.

Updated on January 8, 2018

Original Article:

How to Figure Out What is Wrong With Your Furnace
By Dan Robbins
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