Best critiques from Mr. Heater Big Buddy Propane Heater Reasonably priced

Big Buddy Propane Heaters have 3 settings; low= 4,000btus; med= 9,000btus; high= 18,000btusPowerful 18,000 BTU/hr portable heater Heats up to 400 square feet of space Runs up to 220 hours on low setting Built-in thermal protection probe Low-oxygen shutoff pilot safety system Durable porcelain-coated reflector CSA Certified for indoor and outdoor use AC adapter (not included) or 4 D-cell batteries (not included) powers blower fan Enjoy 18,000 BTU/hr output from your portable heater with the Mr. Heater Big Buddy Propane Heater. Packed with safety features, the Big Buddy can be trusted to heat up to 400 square feet of space for up to 220 hours (on low position) . Built-in thermal protection probe and low-oxygen shutoff pilot safety system provide peace of mind while using. Durable porcelain-coated reflector. CSA Certified for indoor and outdoor use. Uses an AC adapter (not included) or 4 D-cell batteries (not included) to power the blower fan. Big Buddy Propane Heaters have 3 settings; low= 4,000btus; med= 9,000btus; high= 18,000btus. Manufacturer model F274825. Mr. Heater Propane Fuel Filter is sold separately and can be found through item search for item number 612-997-77