So glad I ordered this garage heater.  Our oversized 2 car garage is 750 sq ft.  With 9’ ceiling (Insulated).  It heats up really nice , we have the setting on auto where it shuts on and off . Although we have a 240V plug we still had our electrician switch out the receptacle plate (to match the one on the heater). Please make sure you’re reading the description and specs of this item first as I’ve seen other reviews mentioning they were unaware of the 240V.