my shop was originally that size (40x30) when I bought the house, but I added 20 feet to the back of the building to fit my bigger boat in, and that additional 600 square feet seems to be making this Hot Dawg run a bunch more. Are you 10 foot ceilings like me? Now that I think of it I need to check if my insulation is R19 or R25 version. I am not positive which and not sure if I can even tell by looking at it or not.I have a 1200 sq foot woodshop that I heat with an Enviro ef 3
The shop is insulated to R24 in the walls and R40 in the roof
which is light for Eastern Ontario. The 8 by 10 door is
insulated and weather-stripped. I have no problem keeping
the shop temp at 70 using 1 bag a day the pellets I buy are
Cubix at 6$ a bag. I have used propane, wood, and oil and I will
stay with pellets constant comfortable heat
Just my nickels worth.