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expired Posted by TattyBear | Staff • Nov 8, 2023
expired Posted by TattyBear | Staff • Nov 8, 2023

18,000 BTU Mr. Heater Big Buddy Portable Indoor/Outdoor Propane Heater

+ $10 Shipping

$100

$180

44% off
Northern Tool
44 Comments 20,993 Views
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Deal Details
Northern Tool has 18,000 BTU Mr. Heater Big Buddy Portable Indoor/Outdoor Propane Heater (MH18B) on sale for $99.99. Shipping is $9.99 but varies by location or choose store pickup/free ship to store where stock permits

Note: Pickup availability will vary by location.

Thanks to Deal Hunter TattyBear for finding this deal.

About this product:
  • 4,000- to 18,000-BTU radiant heater for spaces up to 450 square feet
  • Up to 108 hours of use
  • Approved for indoor/outdoor use; clean-burning; nearly 100-percent efficient
  • 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.
  • Uses one or two 1-lb. or one 20-lb. propane tank (propane not included) with optional hose connections
  • CSA certified
  • 1-Year Limited Warranty

Editor's Notes

Written by slickdewmaster | Staff
  • About this deal:
    • This price matches this recent Front Page deal.
    • Rated 4.6 out of 5 stars on Amazon based on over 4050 customer reviews.
    • Please read the Forum Thread for more deal discussion.

Original Post

Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Northern Tool has 18,000 BTU Mr. Heater Big Buddy Portable Indoor/Outdoor Propane Heater (MH18B) on sale for $99.99. Shipping is $9.99 but varies by location or choose store pickup/free ship to store where stock permits

Note: Pickup availability will vary by location.

Thanks to Deal Hunter TattyBear for finding this deal.

About this product:
  • 4,000- to 18,000-BTU radiant heater for spaces up to 450 square feet
  • Up to 108 hours of use
  • Approved for indoor/outdoor use; clean-burning; nearly 100-percent efficient
  • 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.
  • Uses one or two 1-lb. or one 20-lb. propane tank (propane not included) with optional hose connections
  • CSA certified
  • 1-Year Limited Warranty

Editor's Notes

Written by slickdewmaster | Staff
  • About this deal:
    • This price matches this recent Front Page deal.
    • Rated 4.6 out of 5 stars on Amazon based on over 4050 customer reviews.
    • Please read the Forum Thread for more deal discussion.

Original Post

Community Voting

Deal Score
+30
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Top Comments

Since my heat is electric, I rely on this exact model as a backup in case of power loss in the winter in my two story townhouse. Thankfully, I haven't had the chance to test it during the real power outage, but when I first purchased it two years ago, with outside temperature in the 20s, I intentionally turned off my thermostat for a week to test if the Big Buddy heater would be sufficient. I kept all the windows closed to trap as much heat as possible, and to see if natural ventilation would be sufficient. It is also worth noting that my townhouse benefits from heat from two neighbors on either side.

I ended up running the heater at the medium setting to maintain a comfortable temperature. A 20lb propane tank that I connected Big Buddy to lasted about three and a half days at that level. Neither one of my two carbon monoxide sensors, one of which was positioned right next to the heater, got tripped during the test. I did not experience any symptoms of oxygen depletion (and I believe Big Buddy has a low oxygen sensor built in that tripps at around 16%), but there was a slight propane odor, probably from me plugging and unplugging tanks during testing. Another small benefit during the power outage is that a bit of light this heater emits helps light the room at night.

TL;DR: I wouldn't use it as a primary home heater, but it does seem to be a solid option for emergencies, when paired with a 20lb propane tank.
It really depends on the volume of air. In a full sized house, it is super unlikely to deplete the oxygen. They burn very cleanly once the catalytic plates are fully heated. When I use this in a camper van, I crack a window and run two carbon monoxide detectors.
There is a $20 off $100 coupon also. You have to find a filler to get over $100. I bought the fuel filter that's needed for the 20lb tank hookup. Had to pay shipping for that but the part and shipping was around $20 so it was basically getting it free

283762 is the code

43 Comments

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Nov 8, 2023
53 Posts
Joined Dec 2011
Nov 8, 2023
gravymatt
Nov 8, 2023
53 Posts
Anyone know if Amazon will match this price or other big box stores like Home Depot and Lowe's?
Nov 9, 2023
178 Posts
Joined Sep 2011
Nov 9, 2023
sowazit2you
Nov 9, 2023
178 Posts
Quote from gravymatt :
Anyone know if Amazon will match this price or other big box stores like Home Depot and Lowe's?
I just had home depot price match, and they gave the additional 10% off.
Nov 9, 2023
127 Posts
Joined Dec 2010
Nov 9, 2023
tonight
Nov 9, 2023
127 Posts
Quote from sowazit2you :
I just had home depot price match, and they gave the additional 10% off.
How did you get the additional 10%?
Nov 9, 2023
589 Posts
Joined May 2020
Nov 9, 2023
aberro
Nov 9, 2023
589 Posts
Quote from tonight :
How did you get the additional 10%?
Military discount ?
Nov 9, 2023
177 Posts
Joined Jul 2009
Nov 9, 2023
garreta
Nov 9, 2023
177 Posts
is this really safe for indoor use?
Nov 9, 2023
306 Posts
Joined Oct 2004
Nov 9, 2023
g00lag
Nov 9, 2023
306 Posts

Our community has rated this post as helpful. If you agree, why not thank g00lag

Quote from garreta :
is this really safe for indoor use?
We used it in our tent and no asphyxiation. So there's that
1
2
1
Nov 9, 2023
4,220 Posts
Joined Jul 2010
Nov 9, 2023
Selman
Nov 9, 2023
4,220 Posts

Our community has rated this post as helpful. If you agree, why not thank Selman

Quote from garreta :
is this really safe for indoor use?
It really depends on the volume of air. In a full sized house, it is super unlikely to deplete the oxygen. They burn very cleanly once the catalytic plates are fully heated. When I use this in a camper van, I crack a window and run two carbon monoxide detectors.
1
1

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Nov 9, 2023
116 Posts
Joined Sep 2021
Nov 9, 2023
Anar_Agha
Nov 9, 2023
116 Posts
Just fyi: 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).
Nov 9, 2023
122 Posts
Joined Nov 2018
Nov 9, 2023
mihanich
Nov 9, 2023
122 Posts

Our community has rated this post as helpful. If you agree, why not thank mihanich

Since my heat is electric, I rely on this exact model as a backup in case of power loss in the winter in my two story townhouse. Thankfully, I haven't had the chance to test it during the real power outage, but when I first purchased it two years ago, with outside temperature in the 20s, I intentionally turned off my thermostat for a week to test if the Big Buddy heater would be sufficient. I kept all the windows closed to trap as much heat as possible, and to see if natural ventilation would be sufficient. It is also worth noting that my townhouse benefits from heat from two neighbors on either side.

I ended up running the heater at the medium setting to maintain a comfortable temperature. A 20lb propane tank that I connected Big Buddy to lasted about three and a half days at that level. Neither one of my two carbon monoxide sensors, one of which was positioned right next to the heater, got tripped during the test. I did not experience any symptoms of oxygen depletion (and I believe Big Buddy has a low oxygen sensor built in that tripps at around 16%), but there was a slight propane odor, probably from me plugging and unplugging tanks during testing. Another small benefit during the power outage is that a bit of light this heater emits helps light the room at night.

TL;DR: I wouldn't use it as a primary home heater, but it does seem to be a solid option for emergencies, when paired with a 20lb propane tank.
2
Nov 9, 2023
122 Posts
Joined Nov 2018
Nov 9, 2023
mihanich
Nov 9, 2023
122 Posts
Quote from Anar_Agha :
Just fyi: 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).
Thanks for bringing this up. I have the model with the fan and, in my experience, the fan didn't seem to affect heat distribution all that much in an enclosed space. It did, however, make the heater substantially more noisy. For those whose use case would benefit from a fan, a wood stove fan might be a good option since it is powered by the heat, and doesn't require batteries.
Nov 9, 2023
4,220 Posts
Joined Jul 2010
Nov 9, 2023
Selman
Nov 9, 2023
4,220 Posts
Quote from Anar_Agha :
Just fyi: 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).
I run something like this. Heat powered. Just sit it on top.
https://a.co/d/aiuvXig
Nov 9, 2023
855 Posts
Joined Aug 2004
Nov 9, 2023
Rockpick
Nov 9, 2023
855 Posts
Seeing $10 shipping...
Nov 9, 2023
445 Posts
Joined Dec 2004
Nov 9, 2023
reader
Nov 9, 2023
445 Posts
same here, went to buy; now shows $10 shipping

Quote from Rockpick :
Seeing $10 shipping...
Pro
Nov 9, 2023
602 Posts
Joined Jun 2014
Nov 9, 2023
eclpse44
Pro
Nov 9, 2023
602 Posts
There is a $20 off $100 coupon also. You have to find a filler to get over $100. I bought the fuel filter that's needed for the 20lb tank hookup. Had to pay shipping for that but the part and shipping was around $20 so it was basically getting it free

283762 is the code
Last edited by eclpse44 November 9, 2023 at 02:29 PM.

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Nov 9, 2023
10,125 Posts
Joined Dec 2008
Nov 9, 2023
steppedinit
Nov 9, 2023
10,125 Posts
Just chatted with them, they are having the same issue and you will need to call in the order to get free shipping.

1-800-221-1589

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