--- title: "Mr. Heater Big Buddy Propane Heater 4,000-18,000 BTU" description: "Propane heater with 4,000-18,000 BTU output, three heat settings, dual 1 lb cylinder support, low-oxygen shut-off, and tip-over protection." canonical_url: "https://www.kygunco.com/product/mr.-heater-mh18b-4000-18000-btu-big-buddy-heater-no-fan-standa" meta: author: KYGUNCO "og:description": "Propane heater with 4,000-18,000 BTU output, three heat settings, dual 1 lb cylinder support, low-oxygen shut-off, and tip-over protection." "og:image": "https://cdn.kygunco.com/assets/products/206576/thumbnail.jpg?v=1713454507" "og:image:height": "500" "og:image:width": "500" "og:title": "Mr. Heater Big Buddy Propane Heater 4,000-18,000 BTU" --- > Index of every page on this site: [llms.txt](https://www.kygunco.com/llms.txt) [Home](https://www.kygunco.com/) / [Adventure](https://www.kygunco.com/category/adventure) / [Camping](https://www.kygunco.com/category/adventure/camping) / [Heaters](https://www.kygunco.com/category/adventure/camping/heaters) / MRH-MH18B ![Main product image](https://static.kygunco.com/cdn-cgi/image/f=auto,w=600/assets/products/206576/main.jpg?v=1713454507) For illustration purposes only, this image may not be an exact representation of the product. # MR. HEATER 4,000 - 18,000 BTU Big Buddy Heater NO FAN The Mr. Heater Big Buddy is a propane heater with adjustable 4,000 to 18,000 BTU output for enclosed spaces up to 450 square feet. It offers High, Medium, and Low settings, dual swivel regulators for two 1 lb propane cylinders, compatibility with a remote propane supply using optional accessories, and low-oxygen and tip-over shut-off systems. $169.05 ** 5 interest-free payments of **$33.81** with ![Sezzle logo](https://www.kygunco.com/brands/sezzle.svg) ** Online In Store ** Flat Rate $13.94 for every 25 lbs. Shipping to HI & AK may incur additional fees. ** Ships To Your Home Fulfilled by a partner warehouse. ** Partner Fulfilled Selling fast. Limited quantities available. Item # 206576 Style MRH-MH18B UPC 089301004825 Condition New Manufacturer [Mr. Heater](https://www.kygunco.com/brand/mr-heater) The Big Buddy Heater delivers powerful and versatile heating performance, making it an ideal solution for enclosed spaces such as cabins, workshops, and garages. Designed for convenience and safety, it offers adjustable heat output and flexible fuel options, ensuring reliable warmth wherever you need it. FEATURES - Adjustable heat output from 4,000 to 18,000 BTU for customizable comfort - Heats enclosed spaces up to 450 square feet - Dual swivel regulators allow connection to two 1 lb propane cylinders - Compatible with remote propane supply when used with optional hose and filter - Hi, Medium, and Low heat settings for efficient temperature control - Automatic low oxygen shut-off system (ODS) enhances safety in enclosed areas - Accidental tip-over safety shut-off for added protection SPECIFICATIONS - Fuel Type: Propane - Heat Output: 4,000 – 18,000 BTU - Heating Capacity: Up to 450 sq. ft. - Control Settings: High / Medium / Low - Ignition Type: Manual - Cylinder Compatibility: Dual 1 lb cylinders or remote supply (with accessories) - Safety Features: Low oxygen shut-off system, tip-over shut-off ** WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to [www.p65warnings.ca.gov](https://www.p65warnings.ca.gov). 0.0 ** ** ** ** ** 0 reviews ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ** ** ** ** ** 0 ## More from Mr. Heater ```json {"@context":"https://schema.org","@graph":[{"@id":"https://www.kygunco.com/#website","@type":"WebSite","description":"Shop KYGUNCO for firearms, ammo, accessories, parts, and outdoor gear at low prices with fast, easy nationwide shipping.","name":"KYGUNCO","url":"https://www.kygunco.com/","publisher":{"@id":"https://www.kygunco.com/#/schema/organization/kygunco"}},{"@id":"https://www.kygunco.com/product/mr.-heater-mh18b-4000-18000-btu-big-buddy-heater-no-fan-standa#webpage","@type":"WebPage","description":"Propane heater with 4,000-18,000 BTU output, three heat settings, dual 1 lb cylinder support, low-oxygen shut-off, and tip-over protection.","name":"Mr. Heater Big Buddy Propane Heater 4,000-18,000 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