The Mr. Heater F274800 MH18B Portable Propane Heater: Stay Warm Anywhere

Introducing the Mr. Heater F274800 MH18B, the most popular portable propane heater in North America. This innovative radiant heater is perfect for heating enclosed spaces like cabins, garages, or tents up to 450 sq. ft. With its high BTU output of 4,000-18,000, you'll stay warm and cozy wherever you go.

Stay Warm with Dual Heat

Featuring an integrated fan, the Mr. Heater MH18B combines radiant and convection-style heat, delivering the best of both worlds. The adjustable heat control knob allows you to choose from low, medium, and high heat settings, ensuring steady and comfortable temperatures.

Safe and Reliable

Your safety is a top priority with the Mr. Heater MH18B. It has built-in safety features such as the Oxygen Depletion Sensor (ODS) and an accidental tip-over shut-off, giving you peace of mind while enjoying its warmth.

Additionally, this propane heater has an auto shut-off feature if the pilot light goes out or detects low oxygen levels. This ensures safe operation and prevents any accidents or mishaps.

Easy to Use

The Mr. Heater MH18B is designed for convenience. To light the unit, simply push and rotate the knob, and the built-in Piezo sparking mechanism will take care of the rest. It also connects directly to two 1 lb. cylinders, making it easy to refill and use on the go.

Please note that the use of unauthorized accessories or attachments with this heater is prohibited and may cause serious injury. Also, for customers in Canada and Massachusetts, we apologize but we are unable to sell this product in these locations due to regulations.


What is the heating capacity of the Mr. Heater MH18B?

The Mr. Heater MH18B has a maximum heating capacity of 18,000 BTU, making it suitable for spaces up to 450 sq. ft.

How long can the Mr. Heater MH18B operate?

Under normal conditions, the maximum hours of operation for the Mr. Heater MH18B is 220 hours.

Can I use this heater with a propane tank?

Yes, the Mr. Heater MH18B can be connected to a propane tank using a single hose and filter. Please note that the propane tank is not included with the purchase of the heater.


With its powerful heating capacity and portable design, the Mr. Heater F274800 MH18B is the ultimate solution for staying warm in enclosed spaces. Its safety features and ease of use make it a reliable choice for any outdoor adventure or emergency heating situation.

Don't let the cold stop you from enjoying your favorite activities. Get the Mr. Heater F274800 MH18B Portable Propane Heater today and stay warm wherever you go!

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