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Mr. Heater Big Buddy 18000 Btu/h 450 sq ft Radiant Propane Portable Heater

Puts out 18,000 BTU of radiant propane heat to cover up to 600 sq. ft., with CSA-listed safety and auto delay shutoff.
Mr. Heater MPN F274800 In Stock & Ready to Ship
$199.99
Free shipping on orders over $149
Ships within 24 hours · most orders arrive in about 2 business days
Ships free on orders over $149 $14.99 flat shipping until your order reaches $149.

About Product Overview

The Big Buddy from Mr. Heater puts out 18,000 BTU of radiant heat, enough to take the chill off a garage, workshop, cabin, or job site covering 300 to 600 square feet. Running on propane, it's built for indoor use and includes an automatic delay shutoff for added peace of mind while it's running. There's no thermostat or timer to fuss with here - this is a straightforward, no-frills heater you fire up when you need heat and shut off when you don't.

CSA listed for safety, the unit is housed in durable black plastic and sized to sit on a workbench, floor, or tailgate without taking up much room. It's not wheeled, so plan to carry it to where you need it.

  • Heat output: 18,000 BTU
  • Heating area: 300-600 sq. ft.
  • Fuel type: Propane
  • Automatic delay shutoff
  • CSA listed
  • Dimensions: 19" x 11.88" x 17.5", 16.73 lbs

The Details Specifications

Brand Mr. Heater
Model / MPN F274800
UPC 089301748002
Weight 17 lbs
Safety Data Sheet (SDS) Manufacturer documentation · opens in new tab
Price check

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On Amazon, start with these four questions before you click buy.

01

Who's actually selling it

The brand name is on the listing. A different company is in the seller field. Those aren't the same thing, and the second one is who you're buying from.

02

Whether the warranty survives

Most manufacturers only honor a warranty when the unit came through an authorized dealer. We're authorized for Mr. Heater. A third-party marketplace seller usually isn't.

03

Where the box came from

Gray-market stock, returns repackaged as new, and outright fakes move through marketplaces constantly. It all looks identical in the photo. It stops looking identical when it fails.

04

Who you call when it breaks

Ours is a phone number with a person behind it who has held this product. M–F, 6 AM – 5 PM Pacific. (866) 469-8556

The big boxes don't care if your hardware store survives.

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Why we tell you to shop local
Authorized dealer · Mr. Heater

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