Mr. Heater Big Buddy Heater


Dual Heating System combines radiant heat comfort with convection heat air flow!

Mr Heater’s Big Buddy Heater can provide up to 18,000 BTU per hour with the capacity of heating up to 400 sq ft of space for up to 220 hours on low heat setting. The Dual Heating System ( DHS ) combines radiant heat comfort with convection heat air flow for maximum heating efficiency and may be used with smaller 1-lb propane cylinders or larger 20-lb propane tanks depending on heating needs.

It’s multi-position heat settings control the comfort level while the built-in low oxygen sensor / tip off switch and non-skid surface pads ensure safe indoor operation. The ergonomic easy carry handle and rear wall mounted holes make this heater versatile and easily portable.


Available on backorder



Tanks and hoses are not included

3 heat settings 4,000 / 9,000 / 18,000 BTU per hour

Provides 3 – 12 hours of heat from 2 1-lb propane cylinders or up to 220 hours on 2 20-lbs cylinders with optional hose attachments

Ergonomic easy carry handle

Low oxygen shutoff pilot safety system for indoor/outdoor use

Blower fan power On/Off switch

Large 4 position heat level knob with built in piezo starter

Integrated hot air blower venting system

Attached swing open doors with swivel out mount for easy cylinder installation

Porcelain coated reflector for extended life

Dual ceramic burner tiles with shock absorbing floating insulation

High temperature coated safety wire guard

Non-Skid surface pads for extra stability

Rear wall mounting holes

Built in tip over shutoff switch

Quick disconnect hose connection with 2-way positive shutoff for extended stay with regulated RV systems – uses optional RV hose assembly(not included, Sku 34464)

Hose storage bay accommodates up to 12′ hose assembly

Uses A/C adapter or 4 D cell batteries to power blower fan

Temporary heat for barns, sheds, cabins, shelters, tents, campers, RV’s, workshops, worksites, porches, patios, decks, garages, storage buildings, picnics, tailgate parties, sporting events, hunting blindes, ice fishing shanties, truck, horse trailers, and for emergency heating needs

Not designed for permanent installation or for use above 7,000 feet

20 lb tanks to be used outdoors only

CSA certified for indoor use

Weight: 9.05 lbs.

Dimensions: 17.5″ H X 10″ W X 17″ L

Warranty: 1 Year Limited Warranty

Manufacturer: Mr Heater Corp

Mfg Part #: F274865

Tech Notes: BTUs / Hour: 4,000 / 9,000 / 18,000

Fuel Type: Propane

Operating Position: Vertical

Valve Position: Pilot / Low / Med / High

Additional information

Weight 16 lbs
Dimensions 18 × 12 × 19 in


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