Stay warm and toasty wherever you go with the Mr. Heater Portable Buddy Heater – anbsp;4,000-9,000 BTU liquid propane heater thatnbsp;connects directly to a one-pound cylinder. Safe for indoor use, it#39;s the perfect way to heatnbsp;small enclosed spaces up to 225 square feet.4,000 or 9,000 BTUnbsp;OutputWith an impressive heat output ofnbsp;4,000 or 9,000 BTU per hour, the Mr.nbsp;Heater Portable Buddy Heater features a fold-down handle to offer unobstructed heat output. Incorporated into its design is a swivel regulator which allows thenbsp;Buddy Heater thenbsp;ability to adapt usage from a disposable cylinder to a remote gas supply with the purchase of a hose and filter.Piezonbsp;Sparking Mechanismnbsp;The Mr. Heater Portable Buddy Heater takes the guesswork out of operating. Simply rotate the knob to pilot and push to light the unit and the Piezo sparking mechanism will get things started.nbsp;Safe Heatingnbsp;Safety features include an Oxygen Depletion Sensor (ODS) to detect low oxygen and a tip-over detection system to automatically shut off the unit should it accidentally fall. You can depend on the Mr. Heater Portable Buddy Heater to keep you warm and comfortable no matter where your travels may take you!nbsp; Bundle Includes: Mr. Heater F232000 Portable Buddy Heater and Brass Propane Tank Refill Adapter Features: With an impressive heat output of 4,000 or 9,000 BTU per hour, the Mr. Heater Portable Buddy Heater features a fold-down handle to offer unobstructed heat output Piezo Sparking Mechanism: The Mr. Heater Portable Buddy Heater takes the guesswork out of operating. Simply rotate the knob to pilot and push to light the unit and the Piezo sparking mechanism will get things started Safe Heating: Safety features include an Oxygen Depletion Sensor (ODS) to detect low oxygen and a tip-over detection system to automatically shut off the unit should it accidentally fall Design: Incorporated into its design is a swivel regulator which allows the Buddy Heater the ability to adapt usage from a disposable cylinder to a remote gas supply with the purchase of a hose and filter