Mr. Heater 18,000 BTU Big Buddy PRO Series Heater

Price: $146.48
(as of Sep 19, 2026 16:02:45 UTC – Details)


Cold campsites and frozen lakes call for the warmth of a Big Buddy Pro Series heater. For your next excursion, the Big Buddy Pro Series will keep you comfortable with up to 18,000-BTU of heat. Swivel regulators make for easy setup; just screw on 2 1 lbs. propane cylinders or connect to a 20 lbs. tank using Buddy accessories, the 450 sq. ft. of coverage makes any ice shanty a sauna and any deck a Sunroom. With the heaters Life Safety System you won’t sweat too much knowing the oxygen depletion sensor, thermal shut-down system and tip-over switch are keeping you safe. For all of your indoor and outdoor adventures, the Big Buddy Pro Series is there for you.
Heats up to 450 square feet
Low, Medium, and High heat settings: 4,000 / 9,000 / 18,000 BTU
Heats up to 216 hrs. on two 20lb Propane tanks with optional hose (low setting)
Big Buddy dual heating system combines radiant heat comfort with convection heat air flow
Built-in high powered fan
The use of un-authorized accessories/attachments with this heater are expressly prohibited, may cause serious injury, and will void the warranty.
Customers find the space heater performs well, putting out great heat and bringing temperatures up to 70 degrees in no time. They appreciate its portability, being easy to carry up and down steps, and its suitability for outdoor activities like camping and working in garages. Customers consider it safe for indoor use, with one customer noting its effectiveness in a 2,000 square foot house. Battery life and reliability receive mixed reviews – while the tank lasts about 25 hours on low setting, some report the fan stops working, and the pilot light stops working after a few months of use.