Mr. Heater MH9BX Review

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Updated June 27, 2022
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89 Expert Rating

The Mr Heater is a popular portable propane heater that runs off of a one lb propane cylinder. It has multiple safety settings to avoid the dangers of the unit igniting a fire. The Mr Heater Portable Buddy is a must-have if you work in a garage or basement in the winter or if you like to camp during cooler times of the year. It is approved for indoor and outdoor use. The Mr heater portable propane heater is ranked on our top seven heating cooling items along with the SereneLife 8,000 BTU Portable 3-in-1 Air Conditioner, Homech Quiet Ultrasonic Humidifier, Honeywell HPA300 True HEPA Air Purifier.

Why We Like It – Mr. Heater MH9BX

The Mr. Heater portable buddy heater is ideal for warming up small spaces on a cold day. Indoor safe, this portable propane heater can easily heat up 225 sq ft. It also has multiple heat settings control.

  • Available in two color options
  • Free shipping with Amazon Prime
  • Radiant heater for spaces up to 225 square feet
  • When used in high altitudes over 7,000 ft. the heater may turn itself off


Overall, this heater performs well. It has powerful temperature controls and a safety shut off should the heater accidentally get knocked on its side, if the propane runs out, or if it detects low oxygen levels. The propane tank hook up is easy to use, and you can swap out a new lp tank with an empty one in under a minute. While it does not have a fan to circulate heat, according to customer reviews, the Mr heater buddy is still a great tool to have in your garage or workshed.


The Mr. Heater is made of steel, plastic, and nickel. It weighs just nine pounds and is, therefore, ideal for use in a variety of locations. If you are camping or hunting, you can have it close by to warm your hands and feet. When used in a garage or workshed, it is designed to push out between 4,000-9,000 BTU’s depending on the temperature control settings you select. Utilizing a BTU liquid propane gas, one lb cylinder, you can take it with you without worrying about having a 5-gallon gasoline canister in tow.


The price of this heater is great for the amount of BTU’s it puts out. Related products sell for much more. On Amazon, you also get free shipping with your purchase. Verified purchase reviews corroborate the benefits of this heater. If you have any issues, Mr. Heater has a customer service team ready to answer your questions. Overall, the Mr. Heater BTU Propane Radiant Heater is a priced well and a good value. It is suggested that you have extra one-pound propane tanks on hand, should you need to change the tank.

Mr. Heater MH9BX Wrap Up

The Mr. Heater propane radiant heater is a good product to have around. While it does have problems operating in high elevations, as it has a low-oxygen emergency shutoff, it works well in areas under 7,000 feet above sea levels. The two color options of red and grey give off a garage or outdoor vibe, while the 4,000-9,000 BTU radiant heat easily heats small spaces.

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