mine is running 120-160 depending on the location.
i have a lpg central hot air furnace that was fed by two 100 gal tanks. the gas supplier informed me with a bill of a minimal usage fee. i called him and we hee hawed for sometime and then i told him to yank the tanks.
i tied my harman mag hot air outlet into the duct work of the gas furnace. if anything went wrong with harman all i had to do was to hook up the blower and pull the plate i had to install to keep the air from short circuiting and fire up the gas unit.
after getting off the phone with the guy i said to myself" the only thing i need to keep coal burning is the feed motor." so i bought a spare and i think i paid 130. for it but that was seven years ago. its still in the box
squirt some oil in the bearing caps and see if the temp drops at the same firing rate.