Posted 2/23/2021 19:03 (#8853778 - in reply to #8852702) Subject: RE: Hog barn heaters
WC IA
If you have a regulator at the furnace there will be an air intake on it, find it and blow it out. I go thru many cans of compressed air for electronics a yr btwn turns. That air intake on the regulator is the culprit of most flame problems