Awesome propane heater. Works perfectly. Super hot! battery operated fan to push hot air... Can run for about a week or 2 on one 20 lbs tank for daily use. Perfect for garage, workshop, or trailer. Automatic shut off if the oxygen levels get to low is a great feature. (use a carbon monoxide detector as well!!!) also auto shut off if tips over. WHAT MORE CAN I SAY! $120 OBO