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Availability:
In Stock.
Arrives
Saturday, Sep 6
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Features
- 4,000- to 18,000-BTU radiant heater for spaces up to 450 square feet. Approved for indoor/outdoor use; clean-burning; nearly 100-percent efficient
- When operating the heater at altitudes over 7,000 FT above sea level the heater may shut off. Maximum Hours Of Operation- 220.0
- Auto shut-off if tipped over, if pilot light goes out, or if detects low oxygen levels
- Low, medium and high heat level control knob for steady temperatures; connects to propane tank (not included). Note- Due to recent governmental changes to import tariffs, Mr. Heater has removed the fan on some models of the Mr. Heater Big Buddy (MH18B).
- THE USE OF UN-AUTHORIZED ACCESSORIES/ATTACHMENTS WITH THIS HEATER ARE EXPRESSLY PROHIBITED, MAY CAUSE SERIOUS INJURY, AND WILL VOID THE WARRANTY.
Description
The Most Popular Portable Propane Heater in North America. This patented radiant 4,000-18,000 BTU Liquid Propane heater connects directly to two 1 lb. cylinders and is the perfect solution for heating enclosed spaces like cabins up to 450 sq. ft. An integrated fan increases the heating capacity of this unit, blending radiant and convection style heat to give you the best of both worlds. Two swivel regulators give you the ability to adapt usage from disposable cylinders to a remote gas supply with the purchase of a single hose and filter. To light the unit, simply push and rotate the knob. The built in Piezo sparking mechanism will take care of the rest. With the Oxygen Depletion Sensor (ODS) and accidental tip-over safety shut-off, you can be sure that you will enjoy years of comfortable indoor safe heat.WE ARE NOT ABLE TO SELL THIS PRODUCT TO CANADA AND MASSACHUSETTS Please note when operating the heater at altitudes over 7,000 FT above sea level the heater may shut off.
Brand: Mr. Heater
Special Feature: Adjustable Temperature, Flame Resistant, Low-Oxygen Safety Shutoff, Portable, Tip-Over Protection
Color: Red
Form Factor: Pedestal
Indoor/Outdoor Usage: Indoor, Outdoor
Brand: Mr. Heater
Special Feature: Adjustable Temperature, Flame Resistant, Low-Oxygen Safety Shutoff, Portable, Tip-Over Protection
Color: Red
Form Factor: Pedestal
Indoor/Outdoor Usage: Indoor, Outdoor
Product Dimensions: 18.5"D x 18"W x 11.4"H
Recommended Uses For Product: Desk, Garage, Home, Office, Patio
Mounting Type: Floor Mount, Wall Mount
Room Type: Home Office, Living Room
Heating Coverage: 450 sq ft
Burner type: Radiant
Fuel Type: Propane
Number of Speeds: 3
UPC: 089301748002 089301748255
Global Trade Identification Number: 06
Manufacturer: Mr. Heater
Model: Big Buddy Pro Series
Item Weight: 11 pounds
Item model number: F274800
Batteries: 4 D batteries required.
Is Discontinued By Manufacturer: No
Manufacturer Part Number: F274800
Special Features: Adjustable Temperature, Flame Resistant, Low-Oxygen Safety Shutoff, Portable, Tip-Over Protection
Date First Available: October 23, 2004
Frequently asked questions
If you place your order now, the estimated arrival date for this product is:
Saturday, Sep 6
Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
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Top Amazon Reviews
Color: Red
These are great little heaters, bought three; two gifts and one for myself. You may use the small propane tanks, sold separately, or it has a connector inside to plug a separate hose into and connect large propane tank, so you'll have plenty of propane. Puts off plenty of heat, which is adjustable, of course the higher the heat is adjusted the more propane it will use but it does a great job. It's safe of course but make sure it has plenty of ventilation. I use during cold weather on the back porch and in my garage when I work out, leave the door and windows cracked. Nothing negative to say about this heater.
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Reviewed in the United States on July 3, 2025 by JRMJR
Color: Red
I purchased the Big Buddy heater in October 2011 as an emergency heater (we were in the early part of a snowstorm-induced 5 day power/heat outage). It works with those disposable 1lb propane tanks; I also purchased the quick-connect hose adapter to allow me to connect it to a standard "grill sized" 20lb propane tank (http://www.amazon.com/gp/product/B000UC7966) I used this heater for indoor emergency heat during that October 2011 outage, and again this year during the aftermath of Hurricane Sandy, when we were without power / heat for two weeks (and again, treated to a snowstorm). Have not used this heater for regularly heating my home, or for any other purpose such as heating a garage, heating any outdoor area, etc. So my review is based on use as a residential heating appliance in emergency situations. In my experience, this heater performs very well, and I can't think of anything that I think needs to be changed or improved. It's lightweight, portable, and reliable. It puts out a good amount of heat, and functions well as a room heater in our old, drafty house. I did not detect any odor or fumes when using the heater. Nonetheless, as with any non-vented combustible heater, one must be careful because ALL such heaters will output carbon monoxide, and you need to make sure you have a carbon monoxide detector in the room you will be using it. I prefer to use this heater with the 1lb disposable propane bottles (the heater uses two of them at a time). It makes the heater much more portable. But more importantly, I have come to understand that it is very dangerous to bring a 20lb propane tank indoors, because of the risk of leakage (propane is a gas that is heavier than air, and it will invisibly pool on the floor and could ignite if it encounters a source of ignition, such as a gas stove pilot light, or a furnace pilot light, etc.) I had never realized the lingering danger that propane presents to indoor use. Outside, or in certain indoor locations that have lots of venhilation, such as barns, sheds, etc., you can count on the fact that the propane will dissipate before it becomes a danger; the same is not true in most residential houses. In truth, even a 1lb bottle of propane can be a risk indoors, it's just a lesser risk due to the lesser amount of potential leakage. It's no fault of the heater, it's just a fact with propane as a fuel source, and one must really understand this when making decisions about these types of heaters. By contrast, with something like a kerosene heater, you sometimes hear comments about how it might smell (I think mostly this is due to either a faulty or old heater, or improper operation/maintenance). But at least with kerosene, it will not give off vapors that can spontaneously ignite and explode, and you can be pretty sure that, so long as you are following proper procedure and refueling outdoors when the heater is cool etc., it's not going to explode on you. Propane is, in my opinion, a more dangerous indoor fuel, because you are at possible risk of mechanical failures (e.g. leaking valves on even the 1lb propane bottles, or some internal leak in the heater). I would not run either a propane or a kerosene heater at night while I'm sleeping. Anyway, taking into consideration the above points about propane, the Big Buddy heater does what it's supposed to do, and does it very well. With two 1lb bottles of propane attached, we could use it to heat up the kitchen in the AM to take the chill off, have breakfast, and get the kids dressed. Then I would turn off the heater, store it outside (just in case it started leaking), and bring it back inside in the evenings to use for a few hours when the house started getting cold after the sun went down, to eat dinner and get the kids ready for bed. I would run it mostly on high or medium, and that's enough to heat a large room in our drafty old house. Using the heater in this manner, I would burn two 1 lb bottles per day. As a short term fuel, the 1lb bottles are great. But as a longer-term fuel source, it would be expensive. I do have the connector hose to connect it to the 20lb tank, which works great and I have done that a few times (leaving the 20 lb tank outside on the porch and leaving the door open a crack to allow the hose into the house to connect to the heater). But the more I learned about propane, the more hesitant I became about using it like this, even with the tank outside. My concern is a leak somewhere along the rubber hose, or again, maybe somewhere within the heater, and connected to a 20lb tank that could dump a lot of propane inside the house that could ignite if it lingers and finds a source of ignition. I wouldn't hesitate to use this heater outdoors or in any of those garage/barn type of situations, where it would be great and you wouldn't have the same concerns about leaking propane. I'm giving this 5 stars because I do think this heater performs great for its intended purpose. It's far superior to a kerosene heater in terms of its portability and transport for things like outdoor sporting activities, etc. It's clean (as clean as it can be anyway), reliable heat. But I wrote all of the concerns I had about the fuel source generally, so that one could make an informed purchase decision. For an emergency home heater, I also picked up a kerosene heater. It's good to have two options, as fuel can be difficult to find (as I found out during our 2 week outage!) and those of us without a lot of outdoor storage space would have difficulty safely storing enough propane (I don't have a garage or shed, where I would preferably store the propane, so I keep it in one of those weatherproof plastic outdoor boxes you can buy for gardens supplies etc.).
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Reviewed in the United States on November 19, 2012 by Raul DG
Color: Red
My buddy. My buddy. My buddy and me! I love my Big Buddy. We're like, best buds and junk. I have a 350 sq foot cabin and this thing does the job with no probs. I purchased the 12 ft regulator hose with quick connect and have it hooked up to a 20 lb propane tank. I keep mine on LOW, pretty much all the time. Just running it on LOW will generally give you an increase of 30 degrees, compared to the outside temperature. For example, it's 35 degrees outside right now and it's a comfortable 64 degrees inside my cabin. If I wanted to jack it up to 75 inside, I'd put it on HIGH for about 10-15 minutes and it'd be 75 in here. But since the girlfriend is up in the loft asleep (under the electric blanket), I'd just rather chill in my hoodie and keep it a reasonable 64 in here. When she wakes up and starts whining about "being cold," I'll crank it up to HIGH until the inside temp reaches 72. Then I'll cut it back down to LOW and it'll hold that temp pretty well. My cabin is insulated, BTW. Nothing too fancy, just R-13 all the way around and up top. When we leave for work around 6pm, we cut the heater off. If it was 70 when we left, after 8 hours, the inside temp may have dropped to around 55 degrees, but that's with outside temps in the 20's or 30's. 55 degrees is still very comfy for my huge Rottweiler that stays inside the cabin. When I get home, I cut it on HIGH and the inside temp will be back to 70 in about 20-30 minutes. Then I'll cut it down to LOW to maintain the temperature, and we generally cut it off when we sleep. We also use an electric blanket, which keeps us plenty toasty while we sleep. I have left it on while sleeping, but only when it got into the teens outside. Otherwise, we'd be sweating at night. The low-oxygen sensor is a great touch, but I have a carbon monoxide detector in the cabin as a back-up system. Another great feature is the "tip-over" sensor. If you (or your dog) bumps into it, it'll shut right off, which can prevent serious accidents. I never have any problems lighting it. Keeping it on LOW, I run through a 20 pound tank about every 7-12 days. It says it'll run for 220 hours on LOW, which is essentially 9 days. I refill my tanks at the hardware store for $3.29 per gallon, which comes to about $13 per tank to fill it up. Getting it filled will save you about $7 to $9 per tank, as opposed to just exchanging the tank for $20-$22 at Walmart or Walgreens. So I'm able to keep my cabin toasty for about $52 per month. (4 tanks x $13 each) Again, my dimensions are about 350 sq foot with a 10 ft high apex (ceiling). I've been using this for November and December, but I'm probably only going through 2.5 tanks per month, because there hasn't been a need to run it constantly. Finally, I invested the $17 in the AC adapter for the fan, which I highly recommend. Using batteries in the fan is about as inefficient as using the small 1 lb. propane tanks. You shouldn't do either (unless you're just using the heater for tailgating or something similar). But if you're using this as a primary or secondary heating unit, you need to get the regulator for the 20 lb. tank and invest in the AC adapter for the fan. If you follow these instructions, I'm confident you'll be a FAN of the Big Buddy. Pun intended.
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Reviewed in the United States on December 15, 2014 by BMerhout
Color: Red
Good price and well thought out design. I have used this heater for various outdoor projects to provide some localized heat to keep you going. It is also a nice addition at deer camp to be able to have some additional heat source to warm things up quickly. I do appreciate and have used the ability to add the external regulator to the unit to enable hook up to a 20llb or larger propane tank for extended use. Lastly, i have used this unit to heat a small shed approximately 12 x 16' in sub freezing weather and it made the space very comfortable to work in.
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Reviewed in the United States on June 19, 2025 by BB