The LPC25 propane heater does not require electricity. It can be used with propane tanks from 20 to 100 pounds. The circular design provides 360 degree of heating warmth. - 25,000 BUT's - covers up to 600 sq. ft. - runs up to 28 hours on a single 20 pound LP canister - integrated spark ignition - 15K and 25K BTU heat settings - 10' hose w/regulator