What should the plenum temperature be on a modern furnace

by kolosy   Last Updated January 04, 2018 21:21 PM

I had a tech out to review my furnace that's not keeping up - a Trane XV80. They poked around, and saw that the plenum temperature is 95F. They then told me that it should be around 140F, which is clearly, substantially more. The thing that confused me is that in the same breath, he said that the temp delta between the return and the plenum should be 20-30F, which would mean a return temp of 110-120, which is impossible.

So - which is it? And what causes a low plenum temp / how can it be remedied?

Related Questions

Heating System Premature CutOff / DIY Options?

Updated December 31, 2018 00:21 AM

Furnace Blower Motor Replacement

Updated March 18, 2017 17:21 PM

Why does my furnace work after power reset?

Updated December 19, 2018 16:21 PM

Gas furnace kicks on then off frequently

Updated October 27, 2017 23:21 PM

Question about vent coming right off my furnace

Updated January 30, 2018 09:21 AM