Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater — 18,000 BTU, Model# MH18B Item# 173635

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Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater — 18,000 BTU, Model# MH18B | Buy Item# 173635 now for only $129.99

Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater — 18,000 BTU, Model# MH18B

Item# 173635

Only $129.99

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Overview

Features + Benefits

Up to 108 hours of use
CSA certified
Uses one or two 1-lb. or one 20-lb. propane tank (propane not included) with optional hose connections (Items 173645, 173646)
Blower fan uses A/C adapter (Item# 172641, sold separately) or 4 D-cell batteries (not included)
Minimum tank size: 1 lb.

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What's Included

(1) Heater

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Content Links

	Heaters Buyer's Guide
	173635 Product Manual
	Frequently Asked Questions

Key Specs

Category Type	Combination radiant and convection heat
Product Style	Portable/outdoor
Vent-Free	Yes
Heating Capability (sq. ft.)	400
Heat Settings	Low, medium, high
BTU Output	18,000
Clearance from Corner (in.)	6
Clearance from Side Wall (in.)	6
Thermostat Included	No
Blower Included	Yes
Blower Power Supply (Volts, Amps)	110
Fuel Consumption (gal./hr.)	3–12 hrs. on two 1-lb. tanks, 50–220 hrs. on two 20-lb. tanks
Gas Inlet (in.)	1
Igniter	Matchless push-button starter
Oxygen Depletion Sensor	Yes
Remote Included	No
Dimensions L x W x H (in.)	18 3/4 x 11 x 16 7/8
Manufacturer Warranty	12 months parts / 12 months labor
Ship Weight	19.0 lbs
Item#	173635

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Print Reviews for Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater — 18,000 BTU, Model# MH18B

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173635 Product Manual

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Items You'll Need

Hose Assemblies + Regulators

Add

Mr. Heater Fuel Filter for Buddy™ Heaters, Model# F273699 In Stock	Item# 173639		Only $9.99
Mr. Heater Hose Connection For Item# 173634 — 5ft. Length, Model# F273701 In Stock	Item# 173645		Only $20.99

Power Control + Adapters

Add

Mr. Heater AC Power Adapter for Big Buddy Heaters — 6 Volt, Model# F276127 In Stock	Item# 172641		Only $19.99

Items We Recommend

Propane Tanks + Equipment

Add

Worthington Cylinders Propane Tank with OPD Valve — 20-Lbs., Model# 281247 In Stock	Item# 17286		Only $39.99

Hose Assemblies + Regulators

Add

Mr. Heater Buddy Series Hose Assembly — 10-ft., Model# F273704 In Stock	Item# 173669		Only $29.99
Mr. Heater Hose Connection For Item# 173634 — 12ft. Length In Stock	Item# 173646		Only $27.99

Manufacturer Warranty: 12 months parts / 12 months labor

Protect Your Purchase Beyond The Manufacturer's Warranty With Service Protection Plus!

Extended Service Plan Description (learn more)	1 Year	2 Year
Replacement Plan	$14.99 More Info	$19.99 More Info
Accidental Damage Replacement Plan	$24.99 More Info	$34.99 More Info

Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

4.6 / 5

259 of 270(96%)would recommend this product to a friend.

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270

Provides temporary heat for barns, sheds, cabins, campers, patios, garages, sporting events, hunting blinds and more. Dual heating system combines radiant heat comfort with convection heat air flow for maximum heating efficiency. 4000, 9000 and 18,000 BTU with the capacity to heat up to 400 square feet for up to 108 hours on 20-lb. propane tank. Primary Heating Application: Portable indoor / outdoor, BTU Output: 18,000, Vent-Free: Yes, Heating Capability (sq. ft.): 400, Blower Included: Yes, Blower Power Supply (Volts, Amps): 110, Heat Settings: 3, Fuel Type: Propane, Fuel Consumption (gal./hr.): 3-12 hrs on two 1 lb tanks, 50-220 hrs on two 20 lb tanks, Igniter: Matchless push-button starter, Thermostat Included: No, Remote Included: No, Oxygen Depletion Sensor: Yes 4000, 9000 and 18,000 BTU settings Up to 108 hours of use Tip-over cutoff switch CSA certified Uses two 1-lb. or one 20-lb. propane tank (propane not included) with optional hose connections (Items 173645, 173646) Blower fan uses A/C adapter (Item# 172641, sold separately) or 4 D-cell batteries (not included)

Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Works Great!,

March 7, 2007

By GaragePotter

from Concord, CA

"I spent a lot of time researching the perfect heater to use while throwing pottery in my garage, After returning my first choice (it set off my smoke alarm in 15 sec.) and a few others I did not like I did more research! At first I was apprehensive because I had to order The Big Buddy, No one had them in the stores. But WOW! It works great and Has a much longer propane life than the others! On low I get about 95 hours on a 20 lb tank. I run it mostly on low when by myself, med to high with others or on those really cold night! Not only do I use it in the garage, but i have taken it to pottery shows, camping (it kept the tent toasty the weekend all of california froze this year), outside concerts, and many other events. It does not smell, and not once has it set off my carbon monoxide or smoke alarm.
I recommend this for anyone needing a small portable heater!"

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19 of 20 people found this review helpful.

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Mr. Heater Big Buddy,

November 28, 2006

By DavidH

from St. Paul, MN

"I purchased the Big Buddy to provide extra heat in my four season porch. I've tried various electric space heaters, but none provided the heat I was hoping for. The Big Buddy has done an excellent job! The room has never been so warm during winter. For the first time, my family enjoys the four season porch the entire year. The cost to operate the unit is very cheap when one uses an external 20 pound tank. I would not recommend using the 1 pound tanks. They are convenient, but don't last long at the high or medium settings. The unit is very easy and safe to use. All my children use the unit for occasional extra heat, and there has never been a problem."

What is your level of technical expertise? Home Handyman

5 of 5 people found this review helpful.

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

DuckBlind Heater,

September 13, 2010

By tdhawkeyes

"Purchased to make hunting trips comfortable. The controls allow regulation of the fan and heat. The price is reasonable for the utility of the product. I bought two heaters. The carbon monoxide and upset switchs maximize safety. Would recommend this product to everyone wanting comfort."

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Mr. Heater Big Buddy™ Model# MH18B,

August 30, 2010

By BSB1

from Ridgeway, VA

"Heater works great. The different heat settings really help when the temperature goes down. The ability to use small 1lb propane bottles or hook up to a larger bottle ready adds to the versatility of this heater."

What is your level of technical expertise? Home Handyman

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Excellent heater,

August 30, 2010

By omochoa

from Pharr, Texas

"This heater does the job. I use it to heat two adjacent 12 x 12 bedrooms and it performs beautifully. I leave one full tank in it and let it run for about 4-6 hours until it runs out of fuel on its own. Buy the propane transfer coupler to fill up the small 1 lb. tanks from the 20 lb. tanks to save on propane."

What is your level of technical expertise? Home Handyman

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

warmth,

August 30, 2010

By jimsuph

"this heater worked great in my tent when i was hunting in -9 degrees F stayed warm the hole week on only 2 bottles of propane"

What is your level of technical expertise? Professional

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Big Buddy,

August 30, 2010

By heatmaster

from Tupper Lake, NY

"This is an awsome little heater. I use mine ice fishing and I have used it to heat a 300sq.ft camp on occation. I would recommend the attachment for 20lb propane tank for extended use, burns through to small cans pretty fast. Definitely worth buying."

What is your level of technical expertise? Home Handyman

1 of 1 people found this review helpful.

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Great Portable Heater,

August 30, 2010

By Brian10

from Waterford, WI

"I was looking for a decent portable heater to use for ice fishing w/. my son, as our current one just wasn't enough. I researched many products, and decided on the Mr.Heater Big Buddy. I couldn't be happier w/ it. We use it for ice fishing & camping. I even use this when working in the garage in the winter, and it does the job. This heater is great, it has 3 settings (Low,Med,Hi) so you can set it to your weather conditions for the day and the size space you need to heat. So far I have only used it w/ the 1lb. tanks, but intend to use it w/ a 20lb. tank too, at least when using at home. Also, this unit is safe to use inside the house. We have an unfinished basement, so it is not heated and stays quite cooler, so we have used this at times when the kids play downstairs during the winter months. The fan it has helps to circulate the heat better too. Unfortunately it takes 4-D batteries to run the fan, but it hasn't seemed to "eat" them up anywhere near as fast as I thought it would. Overall great product."

What is your level of technical expertise? Home Handyman

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Helpful during a winter power outage,

August 30, 2010

By rkdart

from Nashua, NH

"Bought this as emergency heat for during a power outage, and it worked well during its first test in a blizzard last winter (although I was trying to heat a much larger area than it's rated for, so it only slowed the temperature drop that was occurring).

I used it with a propane tank from my grill and the 12' hose w/regulator that can be purchased separately. Starts pretty easily and lasts a long time; I think for smaller spaces like garages this would be perfect and easily heat the entire room. Feels like it's safe, and despite running it for hours inside (during the day only, just to be safe), my carbon monoxide detector about 15 feet away didn't register anything (it has a digital readout), so the combustion is indeed very complete as it says."

What is your level of technical expertise? Home Handyman

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Mr. Heater Mr. Heater Big Buddy™ Indoor/Outdoor Propane Heater - Dual Heat Options, Model# MH18B

Overall Rating:

5 / 5

Mr. Big Buddy Heater,

June 3, 2010

By Rankster

from Hopewell Jct., NY

"This heater far exceeded my expectations. My garage was unheated but not any more thanks to Big Buddy. I worked on a few projects in my garage this winter and it was a pleasure not to be bundled up with cumbersome clothes and I could actually feel my fingers. Thanks Nothern Tools for the great price on an exceptional product."

What is your level of technical expertise? Home Handyman

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1 answer

Is an adapter needed to hook up to a 20# tank?

Anonymous

1 week, 3 days ago

Products related to my question

Mr. Heater Buddy Portable Propane Heater - 9000 BTU, Model# MH9BX

(27)

Answers

No, for this Big Buddy heater a fuel filter and connection hose is required in order to utilize a 20 pound cylinder.

Please see my product recommendations listed below...