Mr Heater Big Buddy Portable Heater Liquid Propane Dual-Heating System, F274800

4.5 stars
35 reviews ratings
Walmart #: 001135398
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The Big Buddy Dual-Heating System combines radiant heat comfort with convection heat airflow for maximum heating efficiency

Gifting note: This item ships in the manufacturer's original packaging. If intended as a gift, the packaging may reveal the contents.

About this item

The Big Buddy heater combines radiant heat comfort with convection heat airflow for maximum heating efficiency. The propane gas system heats up to 400 square feet of space for up to 220 hours. Use this Mr. Heater unit to evenly heat small to medium-sized rooms, dorms, apartments and offices.

Big Buddy Dual-Heating System:

  • Designed and approved for emergency indoor & outdoor use
  • Automatic low oxygen shutoff system
  • Accidental tip-over safety shutoff
  • 18,000 BTU per hour
  • Fuel: propane gas
  • Connects directly to two 1-lb. disposable cylinders or to a 20-lb. cylinder with optional hose (cylinders not included)
  • Operating Position: Vertical
  • Heating Options: Pilot, Lo, Med. & Hi
  • Heating Time: one 1lb. cylinder/1.5 to 6 hour
  • Overall dimensions: 17"L X 10"W X 17.5"H
  • CSA certified
  • Big Buddy heater model: MH18B

This Big Buddy heater is safe for indoor use in small recreational enclosures, having means for providing combustion air and ventilation, such as enclosed porches, cabins, fishing huts, trailers, tent trailers, tents, truck caps and vans. It may be used for emergency indoor heating when connected to a disposable 1-lb. propane cylinder(s) and for indoor use in commercial enclosures, having means for providing combustion air and ventilation, such as construction trailers or temporary work enclosures.

When the heater is cold or at room temperature, it will take a few minutes for the burner(s) tile to turn bright orange. This is normal and the heater is working properly. If burner(s) tile is visibly flaming, turn heater off and call a qualified service technician.


Assembly Required: N
Model No.: MH18B
Shipping Weight (in pounds): 16.95
Product in Inches (L x W x H): 17.0 x 10.0 x 17.5
Assembled in Country of Origin: USA
Origin of Components: USA
Walmart No.: 1135398

Customer reviews

Customer Reviews | 35 reviews | 4.7 out of 5

4.5 stars

35 reviews | 4.7 out of 5

5 stars
4 stars
3 stars
2 stars
1 stars
Would recommend to a friend



excellant portable heat

Customer review by timeouttemp

5.0 stars by timeouttemp

I have used this space heater indoors and out for emergency heat and for camping. No smell when using it, it's very quiet and heats quickly with no fuss and anyone can use it safely. It heated a 6 man tent in 20 F weather to a nice a toasty 55 + degrees and ran 36 hours straight on highest setting (using a 20 lb. bottle) without a problem. It's easily the best little space heater I've ever owned. Using the 1 lb. bottles gives you the best portable heat I've seen on the market and a 1 lb. bottle on highest setting lasts about 1 1/2 hrs. and up to 6 hr.s on low setting. 2 bottles of course doubles the use time. Great emergency heat for a medium sized room and will keep you cozy while you wait for the power to come back on. Only negative I can think of is it does not come with the AC adapter and my local store could not order it for me. But the 4 D cells needed to run the little fan lasted 12 hours. As much heat as this little baby throws it really doesn't need a fan.

Was this review helpful? (99) (6)
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Would recommend to a friend? Yes
Ownership:Longer than one year
Age:55 - 64
Usage:A few times per year
Great heater for the money

Customer review by satisfiedowner

5.0 stars by satisfiedowner

The Buddy Heater is an excellent heater for the money. It is very easy to light, efficent, and versatile. This heater makes a great back up heat source if the power goes out in the winter. It also burns very clean with no apparent ordor. I highly recommend it!

Was this review helpful? (38) (7)
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upstate N.Y.
Would recommend to a friend? Yes
Ownership:2 - 7 weeks
Age:55 - 64
Usage:A few times per month
Outdoor Heaven

Customer review by Isawitfirst

5.0 stars by Isawitfirst

I purchased this product for Hunting & Camping. I received the unit just one day before departing on a camping trip and didn’t have the opportunity to test it at home. While in the field the heater was placed in-service inside a 20 by 17 foot tent. It proved to be more than enough for that size area even at a low setting. As a consumer I would of liked, if the manufacturer would Have included the 20ft propane extension hose and the 6 volt AC adapter along with the total price of the Heater.

Was this review helpful? (27) (7)
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Ellenwood, GA
Would recommend to a friend? Yes
Ownership:2 - 7 weeks
Usage:A few times per year
1-3 of 33 total reviews See all

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Warranty Plan

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A limited product warranty is included free for most items. With an optional Walmart Care Plan you can enhance the manufacturer's coverage from the date of purchase . Walmart Product Care Plans cover 100% of the cost for repair or replacement, including shipping charges for the exchange.

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Product warranty: 1 Year See details

Supplier Warranty: Mr. Heater warrants its products free from defect for one year from date of purchase. Mr. Heater will repair or replace this product free of charge if it has been proven to be defective within the 1-year period, and is returned at customer expense with proof of purchase to Mr. Heater within the warranty period.
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