Big Buddy heats up to 400 square feet for up to 220 hours on low. Dual heating system combines radiant heat comfort with convection heat airflow for maximum heating efficiency. Powerful built-in fan spreads heat evenly. Convenient push-button piezo ignition lights without matches. A heavy-duty wire safety guard and shock-absorbing floating insulation protect the ceramic burner tiles and porcelain-coated reflector. Safety features include automatic low oxygen shut-off and accidental tip-over shut-off. Swing-out cylinder mount makes installing disposable propane cylinders easy. Non-skid pads for extra stability.