Mr. Heater HERO 35,000 BTU Cordless Forced Air Heater - $219.99

The first and onlycordless forced-air heater on the market, it heats spaces up to 800 sq. ft., or a two-car garage, with 35,000 BTU of warmth-blasting power. Exclusive WhisBurner Quiet technology and a finely tuned direct-current fan also reduce noise, making it 50%quieter than standard heaters. It includes a built-in rechargeable battery and a smart changing system for grab-and-go convenience. A full charge provides eight hours of run time (also operates while recharging, five-hour recharge time). Overcharge protection lets you keep it plugged in, so its always ready with a full charge. Easy-access propane connection, hose and regulator included (20-lb. propane cylinder offers 12 hours of heat). Electronic ignition. Removable power cord. Rugged steel and ABS composite housing for cold-weather durability. Wide base and low center of gravity prevent tipping. ETL-certified for safety.Dimensions: 17L x 9-1/2W x 12-3/4H. Weight: 14 lbs. Type: Heaters. - $219.99