Jimbo that is an excellent set up, Wish I had been using mine for that!!!
I bought my blue blower with heater from the Notorious Gary Heacock for $20.00 plus he threw in a ton of other stuff at a swap meet we had a few years back.
This year I went and bought a new surround heat type of heater instead of the normal 1500 watt job I have used in the past.
Boy was I lucky this morning and for the past couple of weeks with the 20 degree weather we have been having. I found out that I have been just having the fan on without any heat. sure glad my 24x74 garage is insulated cause we had no heat in it except for my 10x8 chemical room.
I thought for sure I would have a frozen pump or even a froze QD, but, nada, all was well, Last time we used the truck was Monday, Helen asked if I had the heater in the truck, I said sure thing Honey, She gave me a dirty look this morning when I told her I had the switch on fan, not heat. New glasses are due in any day. Whew, Sure glad I can clean by Braille!!!