During the winter, running the heater can slightly improve efficiency of a gasoline or diesel engine by increasing the heat rate. Very different from the A/C which adds load with the compressor. The fan is negligible compared to improved heat rejection.
“During the winter, running the heater can slightly improve efficiency of a gasoline or diesel engine by increasing the heat rate.”
Well I did just start doing this a couple months ago and when winter hits I do plan on using the heat again. Thank you for putting to rest any doubts that I or anyone reading this thread may have had about the efficiency issue, I had no idea.
I’d like to see you do that in TX, in the summer.