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  • Mr. Heater Big Buddy Portable Indoor Propane Heater

    Item # 411150
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    In Stock

    Additional Information:
    • Additional freight charge of $5.00 applies.
    • This item can only be shipped to U.S. addresses.


    • 3 BTU settings: 4000, 9000, & 18,000 BTU/Hour

    • Up to 450 sq. ft. area of heated coverage

    • Powered by two 1 lb. propane cylinders

    • Can use remote gas source & tanks up to 40 lbs.

    • Oxygen Depletion Sensor & tip-over safety shut-off

    Product Summary 

    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. Integrated fan blends radiant and convection-style heat, so you get the best of both worlds and an increased heating capacity (operates on 4 x D batteries or AC adapter, not included). 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)

    **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)