Perfect for staying warm indoors, the Mr. Heater Big Buddy Portable Indoor Propane Heater combines safety with high-performing and adjustable warmth. The single control start knob lets you light the unit with a simple push and rotation, while the built-in Piezo sparking mechanism takes care of the rest. Additionally, the knob lets you switch between the 3 output settings: 4000 BTU/hour (low), 9000 (medium), or 18000 (high). This adjustable 4,000 – 18,000 BTU/hr output offers up to a 450 sq. ft. area of heated coverage, making the Big Buddy perfect for heating up enclosed spaces like a cabin.
Ensuring years of safe and comfortable indoor heating, the Big Buddy features an Oxygen Depletion Sensor (ODS) and accidental tip-over safety shut-off. For operating power, the unit connects to two 1 lb. cylinders with the 2 swivel regulators (1 on the left, and the other on the right side of the unit), or to a 20-lb. cylinder with optional hose and filter (not included)*. Furthermore, a Quick Connect fitting on the left side of the unit can connect to a remote gas supply with a single hose and filter (not included)**. Note from manufacturer: Propane tanks larger than 1 lb. must be kept outdoors.
*Hose + Filter Combos for Connecting to Larger Cylinder
• Hose F273701 + Fuel Filter F273699
• Hose F273702 + Fuel Filter F273699
• Hose F298802 + Fuel Filter F273699
• Hose F273704 (fuel filter not required)
• PROPANE TANKS LARGER THAN 1 LB. MUST BE KEPT OUTDOORS
**Single Hose & Filters for Connecting to Remote Gas Supply
• F271802: connects to Quick Connect fitting at heater, and to 3/8″ female flare connection on a regulated, 11″ water column propane source (fuel filter not required)
• F271803 connects to Quick Connect fitting at heater and to bulk tank up to 40 lbs. (no fuel filter required)
Before You Order
Verify part number F274805 exactly Match the listed product details to the part you are replacing before ordering. Compare dimensions, specifications and fitment information with your RV or component.
Frequently Asked Questions
What part number should I verify before ordering?
Verify F274805 on your existing part, documentation or equipment label before ordering.
How should I confirm this part fits?
Compare the listed part number, dimensions, specifications and fitment details with your existing component. Do not rely on appearance alone.
