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Mr. Heater F232017 MH9BXRV Buddy Grey Indoor-Safe Portable RV Radiant Heater (4,000-9,000-BTU)

4.6 4.6 out of 5 stars 2,814 ratings
Grey
Heater
Brand Mr. Heater
Special Feature Portable, Tip-Over Protection
Color Grey
Form Factor Compact
Indoor/Outdoor Usage Indoor
Power Source
Gas Powered
Heating Method
Radiant
Item Weight
1 Pounds
Heat Output
9000 British Thermal Units

About this item

  • 4,000- to 9,000-BTU radiant heater for spaces up to 225 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.
  • Auto shut-off if tipped over, if pilot light goes out, or if detects low oxygen levels
  • Fold-down handle; swivel-out regulator; connects to propane tank (not included).Fuel Type:Propane
  • THE USE OF UN-AUTHORIZED ACCESSORIES/ATTACHMENTS WITH THIS HEATER ARE EXPRESSLY PROHIBITED, MAY CAUSE SERIOUS INJURY, AND WILL VOID THE WARRANTY.

Customer ratings by feature

Easy to use
4.7 4.7
Easy to assemble
4.7 4.7
Portability
4.6 4.6
For small spaces
4.6 4.6
See all reviews
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From the manufacturer


Mr. Heater Buddy Grey Indoor-Safe Portable Radiant Heater

Mr. Heater

Enerco, based in Cleveland Ohio, has been at the forefront of infrared combustion technology since 1957. This market leading technology has allowed Enerco to build expertise in consumer heating products as well as heavy-duty commercial and construction heating products. Starting in 1984, Enerco’s Mr. Heater brand has delivered innovative technology and unmatched quality and service as America’s Most Popular Brand of Heaters. From its Original Tank Tops to its patented Buddy Heaters, millions of consumers have enjoyed high quality comfortable heat. Mr. Heaters Contractor Series Forced Air Propane (now the Quiet Burner Technology line – new 2014) and Kerosene Heaters have become the industry standard for dependability while its unit heaters have expanded the garage to usable workspace in the winter months. 2011 marked the launch of the HERO – The World’s First Cordless Forced Air Propane Heaters featuring Quiet Burner Technology. Through innovative products, innovative marketing, and world class customer service, Mr. Heater is leading the way in portable heat.

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Warranty & Support

Product Warranty: For warranty information about this product, please click here. [PDF ]

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Mr. Heater F232017 MH9BXRV Buddy Grey Indoor-Safe Portable RV Radiant Heater (4,000-9,000-BTU)

Mr. Heater F232017 MH9BXRV Buddy Grey Indoor-Safe Portable RV Radiant Heater (4,000-9,000-BTU)

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Product Description

North America's Most Popular Portable Propane Heater! This patented radiant 4,000-9,000 BTU Liquid Propane heater connects directly to a 1 lb. cylinder and is the perfect solution for heating enclosed spaces like large tents up to 200 sq. ft. The expertly engineered size to BTU ratio is augmented with a fold down handle to give this heater maximum output while retaining a minimalistic footprint. A swivel regulator gives you the ability to adapt usage from a disposable cylinder to a remote gas supply with the purchase of a hose and filter. To light the unit, simply rotate the knob to pilot and push. Then the integrated 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.**

Top Brand: Mr. Heater

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Price—$99.99$169.99-17% $18.98
List: $22.99		$133.89$64.81
Delivery—
Get it as soon as Tuesday, May 14
Get it as soon as Friday, May 10
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Get it as soon as Tuesday, May 14
Customer Ratings
4.64.6 out of 5 stars2,814
4.34.3 out of 5 stars36
5.05.0 out of 5 stars3
4.14.1 out of 5 stars41
4.54.5 out of 5 stars188
4.54.5 out of 5 stars7,881
Easy to use
4.7
3.0
—
3.7
—
4.4
Value for money
4.3
2.6
—
3.6
—
4.3
Heat output
—
4.0
—
—
4.5
4.2
Sold By
—
YifocoShop
Lifestyle by Focus
Amazon.com
Amazon.com
Amazon.com
power source
Gas Powered
Gas Powered
Gas Powered
gas powered
Gas Powered
propane
heating method
Radiant
Radiant
Convection
Radiant
Radiant & infrared,
Radiant
heating coverage
225 square feet
200 square feet
225 square feet
—
Radiant & infrared,
95 sq. ft.
heat output
9000 btus
7500 btus
9000 btus
—
18000 btus
3800 btus
weight
1 pounds
7.7 pounds
13.62 pounds
1.52 pounds
15.1 pounds
1 pounds

Customer reviews

4.6 out of 5 stars
4.6 out of 5
2,814 global ratings

Customers say

Customers like the heat output, performance, size and value of the space heater. They mention that it gets the whole area warm in 10 minutes, works well at even its low setting, is compact and lightweight for its size. They also appreciate the ease of use, safety and value. However, some customers are disappointed with durability and have mixed opinions on quality.

AI-generated from the text of customer reviews

225 customers mention207 positive18 negative

Customers are satisfied with the heat output of the space heater. They mention that it gets the whole area warm in 10 minutes, it is easy to use, and holds the temperature within the camper. Some say that it is a perfect heater for tent camping and that it takes the cold edge off. Overall, most are happy with the product's performance and recommend it to others.

"...It gets the whole area warm in 10 minutes.It’s compact so easy to store and cools down quickly." Read more

"...canopy/shelter in October in Maine for bird hunting and it was very warm (as in remove hat and gloves and jacket in small area)...." Read more

"...The heater helped me keep warm until the power came back on. I love that it’s propane but can be used indoors !" Read more

"...that it was safe to have inside our outfitter tent and did a great job keeping us warm and cozy all nite long." Read more

163 customers mention143 positive20 negative

Customers like the performance of the space heater. For example, they mention it works well, is small and compact, and produces big results. Some say it works best with an air flow and that it works great on deer hunting. Overall, most are satisfied with the performance and recommend it to others.

"...You simply screw on the bottle and turn it on. Works perfectly...." Read more

"This thing worked great on our deer hunting keeping me and the wife nice and toasty during our deer hunt...." Read more

"This heater is a life saver. Great product." Read more

"...However, I was still impressed at how this heater performed at even its low setting...." Read more

60 customers mention57 positive3 negative

Customers find the space heater compact, lightweight, and portable. They say it's great for small spaces and easy to operate. Some customers even say it can be carried in a reusable grocery bag.

"...It gets the whole area warm in 10 minutes.It’s compact so easy to store and cools down quickly." Read more

"This little buddy has been a life saver this football season. It’s light weight, portable, and keeps me and my husband warm in the stands...." Read more

"The Mr. Buddy heater is a great product, very warm, good for small spaces, and fairly compact...." Read more

"...Very light and portable, you can carry it in a reusable grocery bag." Read more

59 customers mention48 positive11 negative

Customers like the value of the space heater. They say it's well worth the purchase price, the canisters of propane are very inexpensive, and the heating is inexpensive. Some mention that the Mr. Buddy heater is a great product and a good little unit that does what they say it does.

"This heater is a life saver. Great product." Read more

"...It’s a great buy for the price and we’ll made." Read more

"I like the quality of this heater. This is a really good product." Read more

"The Mr. Buddy heater is a great product, very warm, good for small spaces, and fairly compact...." Read more

50 customers mention50 positive0 negative

Customers find the space heater easy to use, with easy to follow instructions. They also appreciate the convenience and ease of hooking up the product.

"The ease of hooking up and using this product was amazing. You simply screw on the bottle and turn it on. Works perfectly...." Read more

"I like that it's easy to handle. Made to use inside or outside." Read more

"...As far as operation it was super easy and super efficient. It does go through the small propane canisters...." Read more

"...I bought this guy just in case and so glad I did. It is easy to use and warmed the tent up quickly. No mess or fuss...." Read more

37 customers mention33 positive4 negative

Customers like the safety of the space heater. They mention that it seems safe for indoor use, is compact yet powerful, and is rated for indoor and outdoor use. Some say that it's great for camping and snow camping.

"...I love that it’s propane but can be used indoors !" Read more

"I like that it's easy to handle. Made to use inside or outside." Read more

"...This item is light, feels solid and safe, and has a good look going for it to boot...." Read more

"...It usually lights right up. It will be awesome for camping. Or just in a cold garage which is where I’m using it right now...." Read more

36 customers mention21 positive15 negative

Customers are mixed about the quality of the space heater. Some mention that it's well made, dependable, and solidly built. However, others say that they've had issues with broken parts and the unit arrived damaged with no obvious signs of damage.

"Quiet, great quality and works well. This was purchased to replace my very old one from years back. A must have for the cold season" Read more

"...The heaters were still usable but the quality of the plastic is very poor and brakes very easy." Read more

"I like the quality of this heater. This is a really good product." Read more

"...Also, it's pretty sensitive to wind and blows out pretty easily...." Read more

34 customers mention10 positive24 negative

Customers are dissatisfied with the durability of the space heater. They mention that the small bottles don't last long, the 1lb tank does not last through the night, and the pilot assy failed. Some say that the heater was completely damaged when they took it out of the box and the bottom part of the ignition knob was broken.

"...Not damaged in shipping, but old, dirty and broken. Didn’t even have the loose broken pieces in the box. It’s just a old used Mr. Buddy...." Read more

"...The only downside is that the small fuel cylinders don't last the night. We got about 5 hours out of one tank...." Read more

"...warm and toasty atmosphere or anything like that... but it did keep the house livable...." Read more

"...and refill for less money other than buying the small bottles, they don't last long...." Read more

Consistent and Reliable
5 Stars
Consistent and Reliable
I used this for a 2 person sports canopy/shelter in October in Maine for bird hunting and it was very warm (as in remove hat and gloves and jacket in small area). I now have it set up in my 4-6 person Eskimo and it’s on low and and it’s 29 degrees outside and no wind and I’m very satisfied! Keep in mind also that I have an insulated Eskimo that’s like a quilt. I’m sure I’ll be hooking up my 18.000 BTU before long, but for price and reliability, a HOMERUN! (Used it now about 30-40 times)!
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Top reviews from the United States

DavidHarper
5.0 out of 5 stars Works quickly
Reviewed in the United States on January 13, 2024
Color: GreyStyle: HeaterVerified Purchase
This is my second one. The first one lasted 8 years. I use it on the boat to eat the galley when It’s early and I don’t want to disturb my neighbors by starting the generator.
It gets the whole area warm in 10 minutes.
It’s compact so easy to store and cools down quickly.
One person found this helpful
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Jayson Floyd
5.0 out of 5 stars Consistent and Reliable
Reviewed in the United States on December 9, 2023
Color: GreyStyle: HeaterVerified Purchase
I used this for a 2 person sports canopy/shelter in October in Maine for bird hunting and it was very warm (as in remove hat and gloves and jacket in small area). I now have it set up in my 4-6 person Eskimo and it’s on low and and it’s 29 degrees outside and no wind and I’m very satisfied! Keep in mind also that I have an insulated Eskimo that’s like a quilt. I’m sure I’ll be hooking up my 18.000 BTU before long, but for price and reliability, a HOMERUN! (Used it now about 30-40 times)!
Customer image
Jayson Floyd
5.0 out of 5 stars Consistent and Reliable
Reviewed in the United States on December 9, 2023
I used this for a 2 person sports canopy/shelter in October in Maine for bird hunting and it was very warm (as in remove hat and gloves and jacket in small area). I now have it set up in my 4-6 person Eskimo and it’s on low and and it’s 29 degrees outside and no wind and I’m very satisfied! Keep in mind also that I have an insulated Eskimo that’s like a quilt. I’m sure I’ll be hooking up my 18.000 BTU before long, but for price and reliability, a HOMERUN! (Used it now about 30-40 times)!
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3 people found this helpful
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Amazon Customer
5.0 out of 5 stars Simply screw on the bottle and turn it on. Amazing!
Reviewed in the United States on March 10, 2024
Color: GreyStyle: HeaterVerified Purchase
The ease of hooking up and using this product was amazing. You simply screw on the bottle and turn it on. Works perfectly. I bought this heater because I was driving to Kansas City with -27 windchill and didn’t want to break down and not have a backup plan.
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matt
4.0 out of 5 stars Good small heater
Reviewed in the United States on January 30, 2024
Color: GreyStyle: HeaterVerified Purchase
I lost power for 24 hour and the outside temps were near zero during that time frame. The heater helped me keep warm until the power came back on. I love that it’s propane but can be used indoors !
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Dilf
5.0 out of 5 stars Really puts out great amount of heat in small amount of time--it sure seems safe for indoor use
Reviewed in the United States on January 3, 2018
Color: GreyStyle: HeaterVerified Purchase
Given the stellar reviews, it really seemed that this would serve my needs--to supplement a decent electric heater on those below zero days in a small room in an unheated garage.
And I think it will do that great, it really cranks with the heat, and starts right up.
But I'm worried about the CO factor some. There are no windows in the small room, and running the unit immediately kicks the air cleaner into high gear (the air cleaner detects changes in air quality and reacts accordingly). But that probably is because there always is the faint smell of propane when starting a heater like this--and that's normal, you'll smell a little on all propane devices, like gas grills, etc. My air cleaner will not detect CO.
Reviews on the subject are split, you DO need venting because it's gas powered, you DO NOT need venting because unit has an oxygen depleting sensor that will shut unit off if it is triggered, thereby eliminating possibility of CO being produced.
Even the instructions hedges their bets on it--for emergency indoor use that touts benefits of aforementioned sensor, while also stating that proper ventilation is necessary in use of unit. It seems like it should be one or the other. And if it's just a case that so long as unit is functioning properly there is no need to worry about CO, then I wish Mr Heater said so in that simple of language in the instructions.
I'll pick up a CO detector and go with what it indicates.

UPDATE: Ran unit on high with Kidde CO detector 4 feet above and away from it for an entire life of 1 lb propane cylinder, 2 hours with door closed. Garage room is about 7' by 8' by 15'. Alarm did not go off, not once. I'm NOT recommending running it without ventilation, but feel much safer with it now that it tests out to my satisfaction. Changed rating from 4 to 5 stars, I highly recommend this unit.
18 people found this helpful
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Amazon Customer
5.0 out of 5 stars Worked Great for our cold weather hunt
Reviewed in the United States on October 13, 2023
Color: GreyStyle: HeaterVerified Purchase
This thing worked great on our deer hunting keeping me and the wife nice and toasty during our deer hunt. Surprised me that it was safe to have inside our outfitter tent and did a great job keeping us warm and cozy all nite long.
5 people found this helpful
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Evelyn Gallegos
5.0 out of 5 stars Love it.
Reviewed in the United States on March 30, 2024
Color: GreyStyle: HeaterVerified Purchase
This heater is a life saver. Great product.
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tj7620
5.0 out of 5 stars put out the heat
Reviewed in the United States on October 13, 2023
Color: GreyStyle: HeaterVerified Purchase
Found this heater on Amazon for $20.00 less than what Walmart charges. It heated up my 30' travel trailer 10 degrees in a matter of minutes. It put out so much heat on high that I had to use it on low. It does put out some fumes so you need to make sure you have some form of ventilation so you don't have to worry about carbon monoxide.
7 people found this helpful
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Top reviews from other countries

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Stephen
5.0 out of 5 stars Kept us comfortable during a couple rainy autumn days and evenings
Reviewed in Canada on October 26, 2023
Color: GreyStyle: HeaterVerified Purchase
Feels well built.
Puts out a lot of heat.
It's the only one that's really indoor-safe AFAICT, they do specify at minimum a 3"x3" ventilation opening.
It worked great to keep us comfortable in a large screen tent during a few cold rainy autumn days and evenings.
Straightforward operation.

Know though that is has no thermostat (it'll keep putting out heat).
Also I would advise against using it in a sleeping tent.

It has worked well for us for this trip, and I'm also glad to have it in case of emergency.
4 people found this helpful
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Cliente de Amazon
5.0 out of 5 stars Excelente calidad.
Reviewed in Mexico on May 12, 2021
Color: GreyStyle: HeaterVerified Purchase
Lo he usado en un par de ocasiones y funciona hasta ahora perfectamente.
One person found this helpful
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LES HORNE
5.0 out of 5 stars IT IS GREAT
Reviewed in Australia on September 15, 2023
Color: GreyStyle: HeaterVerified Purchase
THIS IS THE BEST THING FOR A CAMPER VAN SINCE SLICED BREAD WAS INVENTED, I AM STOKED.
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Ricardo Ruiz
4.0 out of 5 stars Práctico
Reviewed in Mexico on December 30, 2022
Color: GreyStyle: HeaterVerified Purchase
El dispositivo es bastante bueno y seguro, sin embargo creo que la duración de un tanque de propano tipo camping (verde) es una tanto corta en HI posición.
One person found this helpful
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Anthony
5.0 out of 5 stars Save money and beat the heat with this buddy!
Reviewed in Canada on October 4, 2017
Color: GreyStyle: HeaterVerified Purchase
Easy to use, works great for taking the humidity out of the tent as well as providing perfect heat in an enclosed space. I used it mainly evenings and
and in the mornings. If left on even for a short time this really can heat a place up in a hurry so with all the mesh in the tents these days which works well to provide the ventilation required the heat obviously goes through the mesh and heats up the outer part of the tent as well so you won't have to pack up the tent damp. It also works fantastic when left on all night on those below zero nights. At first I worried about oxygen deprivation or carbon monoxide build up, that was unnecessary the unit performed flawlessly and now I view it as I would a dishwasher, a necessary luxury to be sure. I built a carry case out of 3/4 inch plywood to set the unit on in the tent giving it height and and enough weight to provide a solid base and alleviate the chance of a knock down. It also raises the unit above the height of most mattresses etc and when the unit is in use extra propane cylinders can be kept inside. The carry case is open on the top and approximately 18" square. This works extremely well and for those really concerned about the chance of a spill weights could be stacked into the case. I've spent thousands of dollars on sleeping bags over the years some rating to -40 C and still felt chilled winter camping, this could have been avoided had I known...
18 people found this helpful
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