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Mr. Heater MH4B-Massachusetts/Canada Portable LP Heater , Red

  • Based on 784 reviews
Condition: New
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Availability: 11 left in stock
Fulfilled by UnbeatableSale, Inc

Arrives Apr 29 – May 1
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Features

  • 3,800 BTU per hour
  • For use with propane gas
  • Heats up to 95 sq ft
  • One button ignition on function
  • 8in round stand; uses little floor space
  • Accidental tip-over safety shut-off
  • Automatic low oxygen shut-off system
  • Connects directly to one 1lb propane cylinder
  • Quiet, clean,odor-free operation
  • The use of un-authorized accessories/attachments with this heater are expressly prohibited, may cause serious injury, and will void the warranty.

Description

Stay toasty and comfortable wherever your adventures take you with the Mr Heater Little Buddy Heater. Designed for outdoor enthusiasts like campers, hunters, and hikers, this portable powerhouse delivers an impressive 3,800 BTU per hour, effortlessly warming areas up to 95 square feet. Imagine cozying up in your ice fishing shack, surrounded by the quiet, clean warmth this heater provides, all without the hassle of odors or noise. With its user-friendly one-button ignition, getting started is a breeze, and its compact 8-inch round stand ensures it occupies minimal floor space. You can count on the Little Buddy for reliable safety, thanks to an array of features like the Oxygen Depletion Sensor (ODS), accidental tip-over safety shut-off, and cross-thread protection. Plus, its self-extinguishing plastic and thermocouple add peace of mind while you enjoy the great outdoors. Simply connect it to a 1 lb propane cylinder, and you're set for hours of worry-free warmth. Whether you're embarking on a chilly hike or setting up camp under the stars, the Mr Heater Little Buddy Heater promises the comfort and dependability you need to make every experience memorable.

Brand: Mr. Heater


Special Feature: Portable


Color: Red


Form Factor: Dish


Indoor/Outdoor Usage: Outdoor


Special Features: Portable


Form Factor: Dish


Indoor Outdoor Usage: Outdoor


Power Source: Propane gas


Heating Method: Radiant


Recommended Uses For Product: Outdoor Use


Mounting Type: Tabletop Mount


Room Type: Patio


Heating Coverage: 100 sq ft


Heating Element: Radiant


Heat Output: 3800 British Thermal Units


Fuel Type: Propane


Number of Speeds: 1


Voltage: 110 Volts


Max Temperature Setting: 120 Degrees Fahrenheit


Smart Home Compatibility: Not Smart Home Compatible


Color: Red


Brand Name: Mr. Heater


Model Number: MH4B


Warranty Description: 3 year limited.


UPC: 089301151208


Global Trade Identification Number: 08


Part Number: F215100


Unit Count: 1.0 Count


Item Type Name: portable heater


Manufacturer: Mr. Heater Corporation


Included Components: Heater


Item Dimensions D x W x H: 8.35"D x 10.31"W x 10.04"H


Item Weight: 4.1 Pounds


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Apr 29 – May 1

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Heater
Works perfect! Bought for my side by side, and it warms great!
Reviewed in the United States on January 2, 2026 by Ashley Burriss

  • Mr. Heater makes a great gift for a hunter.
This Mr. Heater MH4B was purchased as a Christmas gift. However, it was put to use during the last week of deer hunting. Husband very pleased with it. He felt it did an excellent job of warming and was fuel efficient. Was not too heavy to move around safely.
Reviewed in the United States on December 27, 2025 by Judith A. Hutchison

  • Works great in a hunting blind
Easy to carry , no smell,does a great job of extending your sit
Reviewed in the United States on January 16, 2026 by brian cross

  • Nice little heater
Porduct is as advertised. Very simple to use & puts out an adequate amount of heat when seating on my screened-in back porch on chilly mornings. Appears to be well made & is very simple to operate. I'm enjoying it very much!
Reviewed in the United States on March 3, 2023 by Billy D.

  • Awesome
I use it indoors and out. Perfect if the power goes out and you need to keep a small room warm. It won't heat a whole house, but will work in a pinch.
Reviewed in the United States on September 29, 2024 by Stacey

  • comfort and protection
works great,safety features,
Reviewed in the United States on December 21, 2025 by Peggy

  • Fast service
Works well
Reviewed in the United States on December 18, 2025 by Dave

  • Kept us from freezing
I bought this a while ago, but this past weekend was the first chance I had to use it. It dropped to below 40 F outside (with wind chill). And while this heater didn't keep our tent warm, it at least brought it up to bearable and warm enough to sleep in. I'm thinking of ordering another to more easily start one without having to attach a new tank when it runs out of propane in the odd hours of the morning. ... show more
Reviewed in the United States on March 28, 2023 by Eris

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