Untested. The Dyna-Glo BFSS30LPT-4P 30K BTU LP Blue Flame Vent Free T-stat Wall Heater is a powerful and efficient space heater suitable for homes and garages. With a 30,000-39,999 BTU heating rating and a 1-way air direction, it effectively warms areas up to 100 sq ft. The heater features a timer control, auto shut-off, and vent-free operation for added safety and convenience. With a sleek white design and a variety of mounting options, this Dyna-Glo heater is a reliable choice for keeping spaces comfortable during colder weather. Arm-6225-pd0-v109-upstairs
Please note that this unit is a space heater and not a ventless heater. I would not recommend it to heat a house as it needs lots of oxygen to run it. Heating a large garage or outside building is what it is best suited for. On that Note it is a great heater that puts out lots of heat.