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Mr. Heater F274830 MH18BRV Big Buddy Grey Indoor-Safe Portable RV Propane Heater (4,000 , 9,000 and 18,000 BTU)

4.7 4.7 out of 5 stars 1,826 ratings

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Grey

Purchase options and add-ons

Brand Mr. Heater
Special Feature Portable, Low-Oxygen Safety Shutoff, Tip-Over Protection
Color Grey
Product Dimensions 19"D x 12"W x 17.75"H
Mounting Type Floor Mount
Power Source
Corded Electric
Heating Method
Radiant, Convection
Item Weight
0.01 Ounces
Heat Output
18000 British Thermal Units

About this item

  • Heat your camper, cabin, porch, picnic area, garage, barn, shed, hunting blind, and more by choosing from high, medium, and low heat settings for custom warmth
  • Gives off 4,000, 9,000, or 18,000 BTU per hour with a heat range of 450 square feet; For use with propane gas integrating a 1-pound LP cylinder or 20-pound cylinder with hose (not included)
  • Single control start knob for easy use with a piezo sparking mechanism for reliability and an Automatic Oxygen Depletion Sensor (ODS) safety shutoff in case of an accidental tip over for added safety
  • Connects to 1-pound propane tanks with swivel regulators, allowing you to go from using disposable cylinders to a remote gas supply; Hose, filter, batteries, and propane are not included
  • Comes with an easy-grip handle and heavy-duty safety wire guard for added tile protection and rugged durability while traveling and runs up to 3.6 hours on low and 1.8 hours on high
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$13.79
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Mr. Heater F274830 MH18BRV Big Buddy Grey Indoor-Safe Portable RV Propane Heater (4,000 , 9,000 and 18,000 BTU)
Mr. Heater F274830 MH18BRV Big Buddy Grey Indoor-Safe Portable RV Propane Heater (4,000 , 9,000 and 18,000 BTU)
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Mr. Heater F215100 MH4B Little Buddy 3800-BTU Indoor Safe Propane Heater With Portable|Low-Oxygen Safety Shutoff|Tip-Over Protection|Lightweight, Medium , Black/Red
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Price$151.99-6% $149.99
List:$159.99
-11% $59.99
List:$67.49
-39% $129.99
List:$213.67
$117.85-10% $52.79
Typical:$58.90
Delivery
Get it as soon as Saturday, Mar 23
Get it as soon as Tuesday, Mar 26
Get it Mar 26 - 27
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Get it as soon as Tuesday, Mar 26
Customer Ratings
Heat output
4.7
4.1
4.5
4.5
4.2
Easy to use
4.6
4.6
4.8
4.4
Value for money
4.3
3.9
4.3
4.3
Safety Features
4.6
4.7
4.4
Sold By
Spreetail
Amazon.com
Equipsupply
Lifestyle by Focus
Amazon.com
Amazon.com
power source
Corded Electric
gas powered
Battery Powered
Gas Powered
Gas Powered
propane
heating method
Radiant, Convection
Radiant, Convection
Radiant & infrared,
Radiant
Radiant
heating coverage
450 square feet
450 square feet
Radiant & infrared,
300 sq ft
95 sq. ft.
heat output
18000 btus
18000 btus
18000 btus
12000 btus
3800 btus
weight
0.01 ounces
15 pounds
15.1 pounds
14 pounds
1 pounds

From the manufacturer


It features quick-connect assembly and an automatic low oxygen shutoff system. The Mr. Heater has swivel regulators and can be used in cabins, RV's, workshops, patios, porches and more.

  • 4,000, 9,000, or 18,000 BTU per hour
  • For use with propane gas
  • Heats up to 450 sq. ft.
  • Single control start knob
  • Hi-Med-Low heat settings
  • Swivel regulators
  • Automatic low oxygen shut-off system (ODS)
  • Accidental tip-over safety shut-off
  • Connects to two 1 lb. cylinders
  • Connects to a 20 lb. cylinder with optional hose
  • Fan operates on 4 - D batteries or AC adapter, both sold separately
  • The distinctive Red Mr. Heater Buddy that has delivered comfort and safety for decades.

Product 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. **

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here

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Mr. Heater F274830 MH18BRV Big Buddy Grey Indoor-Safe Portable RV Propane Heater (4,000 , 9,000 and 18,000 BTU)


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What's in the box

  • 4 complete heaters
  • Product guides and documents

    Looking for specific info?

    Customer reviews

    4.7 out of 5 stars
    4.7 out of 5
    1,826 global ratings

    Customers say

    Customers like the heat, performance, and weight of the space heater. For example, they mention that it provides a good bit of heat, works well, and is portable. That said, opinions are mixed on ease of use, value, fan, and efficiency.

    AI-generated from the text of customer reviews

    299 customers mention279 positive20 negative

    Customers are satisfied with the heat provided by the space heater. They mention it provides a good bit of heat, it heats up the space really quickly, and it has three levels of heat output. The built-in fan makes a big difference when trying to quickly heat a room. Customers also appreciate the wide range of heat options and the built- in fan. Overall, customers are happy with their purchase and recommend it to others.

    "...a Little Buddy and the new Big Buddy in the space, and have been perfectly warm!!!! LOVE these Buddy Heaters!!!" Read more

    "...The built in heater fan makes a big difference when your trying to quickly heat an indoor environment...." Read more

    "...Highly recommend this. It will work great in garages, emergency heating for a house or as a constant source..." Read more

    "...it was a perfect solution for having heat with no power for a few days!" Read more

    180 customers mention135 positive45 negative

    Customers like the performance of the propane heater. For example, they say it works well, is easy to connect, and has three levels of heat output. Some mention it's great for garages and emergency heating for a house. Overall, most are satisfied with the performance and recommend it to others.

    "...This unit functioned properly as expected. There were no defects detected in operation or workmanship." Read more

    "...Highly recommend this. It will work great in garages, emergency heating for a house or as a constant source..." Read more

    "...20lb tank hose worked perfectly and was easy to connect. Unit is very light...." Read more

    "...Once I had realized that the unit was not performing properly (as related above), I re-read the printed manual one more time just to be sure that I..." Read more

    28 customers mention25 positive3 negative

    Customers like the weight of the space heater. They say it's portable, lightweight, and easy to carry. Customers also say it is convenient for football games and camping.

    "...20lb tank hose worked perfectly and was easy to connect. Unit is very light...." Read more

    "Love the heater. Like all Mr Buddy heaters, it's portable, lights easily and with three different levels of heat, you can always find the right..." Read more

    "...I would buy again because this is so portable and works great." Read more

    "Easy to operate, lightweight.But the fan is extremely weak, almost unexistant (sp) and uses up propane fairly fast" Read more

    22 customers mention22 positive0 negative

    Customers are satisfied with the safety of the space heater. They mention that it has all the necessary safety features, and is safe to use both indoors and while camping. Some customers also appreciate the adjustable safety mechanism.

    "...used this little heater for power outages, it works great, I felt very safe with it and easy for a grandma to use...." Read more

    "...I really did like all the safety features...." Read more

    "...Seems pretty safe using camping but I still take precautions by keeping a Carbon Monoxide detector and venting while using just to be on the..." Read more

    "...It has safety features and I hope they work, not that I have any concerns, but accidents happen...." Read more

    79 customers mention48 positive31 negative

    Customers are mixed about the ease of use of the space heater. Some mention that it works great so far, is easy to start, and simple. However, others say that it has problems keeping the unit lit and the medium setting only burns one side.

    "Easy to set up and connecting the hose to a propane tank was okay (had some issues at getting the hose to connect and twist on the first time)...." Read more

    "...gave up on the unit, accepted the fact that it was defective and dangerous to use, and notified Amazon this morning that the unit was defective, and..." Read more

    "...20lb tank hose worked perfectly and was easy to connect. Unit is very light...." Read more

    "...power outages, it works great, I felt very safe with it and easy for a grandma to use...." Read more

    48 customers mention28 positive20 negative

    Customers are mixed about the value of the space heater. Some mention it's a great product for the money, more economical than their RV furnace, and saves. bundle of cash. However, others say that it'd be a waste of time and money.

    "...This is a great product for the price and a good investment to have if the power happens to fail..at least you and your family/pets will stay very..." Read more

    "...The printed user manual that accompanies this unit is seriously deficient in some ways, as follows:..." Read more

    "...They a worth the extra money verses off brand items. I know for I have tried it both ways." Read more

    "Works great in an enclosed area, but at an outdoor event, not good...." Read more

    26 customers mention12 positive14 negative

    Customers are mixed about the fan. Some mention that the fan is a nice option for heating a smaller area, while others say that it's weak and useless.

    "...was a bit misleading regarding the built-in fan ... this model does NOT have a fan...." Read more

    "Nice heater for smaller area, The fan is a nice option, I have not tried the fan on batteries as I bought the Mr heater ac adapter, but don’t waste..." Read more

    "...The fan blows stronger on the right side than left. But low and medium only lights the left side. Plus it eats D cell batteries way to fast...." Read more

    "...I especially like the built in fan with manual switch which makes it very versatile, Most of the time I run it on low; only on 3 very cold mornings..." Read more

    22 customers mention12 positive10 negative

    Customers are mixed about the efficiency of the space heater. Some mention that it uses a lot of propane, while others say that it is very efficient.

    "...The Mr Heater is quite a bit more efficient...." Read more

    "...But low and medium only lights the left side. Plus it eats D cell batteries way to fast. And the power supply is NOT included?..." Read more

    "...Best heater purchase. Light wait. Doesn't use a bunch of gas." Read more

    "...It does eat up the fuel. In extreme cold weather, I can expect a 20lb tank of propane to last me about 5 days...." Read more

    Really nice heater!!!
    5 Stars
    Really nice heater!!!
    I have my shop, rehearsal, and practice space in a Quonset Hut, and we're in the Pacific Northwest. We are just getting out of a very cold (for here) snap, down to about 15 degrees for several days. I have a Little Buddy and the new Big Buddy in the space, and have been perfectly warm!!!! LOVE these Buddy Heaters!!!
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    Top reviews from the United States

    Reviewed in the United States on January 18, 2024
    Customer image
    5.0 out of 5 stars Really nice heater!!!
    Reviewed in the United States on January 18, 2024
    I have my shop, rehearsal, and practice space in a Quonset Hut, and we're in the Pacific Northwest. We are just getting out of a very cold (for here) snap, down to about 15 degrees for several days. I have a Little Buddy and the new Big Buddy in the space, and have been perfectly warm!!!! LOVE these Buddy Heaters!!!
    Images in this review
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    One person found this helpful
    Report
    Reviewed in the United States on February 17, 2024
    Reviewed in the United States on December 4, 2023
    2 people found this helpful
    Report
    Reviewed in the United States on December 13, 2022
    5 people found this helpful
    Report
    Reviewed in the United States on November 26, 2022
    Customer image
    4.0 out of 5 stars Great heater - with one issue
    Reviewed in the United States on November 26, 2022
    Pros - With a CO monitor and plenty of ventilation, it kept my Gazelle T4 8'x8' 3 season tent warm (comparatively) on low heat when the temps fell to 2 degrees F. Ran it at night for 6 days straight for about 10 hours each before the 20lb tank died about 2 hours early on the last night. Made camping/sleeping in frigid temps very bearable. D cell batteries for the fan worked for at least 2 days/20 hours. 20lb tank hose worked perfectly and was easy to connect. Unit is very light. Power adapter and/or spare D cell batteries (2 per use) can be stored in one of the two 1lb tank spaces.

    Cons - the fan made a screeching noise when it turned it on for the third night. Was afraid it was the fan bearings but changed the batteries just in case. Noise went away. Fourth night when I tried turning it on it wouldn't stop screeching. Tried the AC adapter for S&G, no luck. Fan bearings were shot. Ran the heater the last three nights without the fan on and had noticeably more cold areas in the tent - especially down low. Currently working with support to get a new fan assembly. Hopefully they come thought.

    Summary - Great heater for small spaces. Fan might be an issue for extended use and is pretty anemic even when it is working. Use the large tank hose with the quick disconnect for long term use or high heat output. Overall a great thing to have when you need more heat and a circulation fan as compared to the Hunter or Portable versions.

    12/14/22 Update - contacted support and they responded quickly and more than willing to help. I provided my serial number and they sent me a new back panel with integral fan. 4 screws and the panels were swapped out. Fan isn't the best quality but hopefully the replacement lasts a bit longer.
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    26 people found this helpful
    Report
    Reviewed in the United States on October 15, 2023
    5 people found this helpful
    Report
    Reviewed in the United States on October 22, 2023
    7 people found this helpful
    Report
    Reviewed in the United States on February 16, 2024