Thanks in advance for your advice.

I've got a small shop, 12x16, 9 ft ceilings. Last year I heated with an old electric milkhouse heater. There was daylight showing through the walls in places, and this heater was sufficient. For instance, I could do glue-up on all but the coldest (-20 degrees) of days.

I reworked the space a bit this summer - large insulated windows on the south wall, plywood floor instead of the old cracked slab, tighented up the walls and doors. I'm finishing the insulation right now.

The little heater I used last year has given up the ghost - just too decrepit to fix up. I could easily go buy a new one like it, but wonder what other suggestions folks have.