The vent pipe from my furnace to the chimney is to hot to touch. Isn't this a lot of waste?


That is efficiency. The flue is to be hot but it is the amount of wasted heat that determines how efficient you are. 80% efficient means 20% waste. Etc...

Updated on January 19, 2018

Original Article:

Troubleshooting Common Furnace Problems With an HVAC Expert
By Dan Robbins