Mr. Heater Portable Buddy Manual: A Comprehensive Guide
This guide details the operation, safety, and maintenance of Mr. Heater Portable Buddy models, offering crucial instructions and warranty details for optimal performance.
Understanding the manual ensures safe and efficient heating, covering topics from propane tank connection to troubleshooting common issues, as seen in online resources.

Understanding the Mr. Heater Buddy Series
The Mr. Heater Buddy series provides portable, propane-fueled radiant heating solutions, ideal for various applications like camping, ice fishing, or emergency warmth. These heaters are known for their clean-burning efficiency and user-friendly operation, as highlighted in numerous online manuals and reviews.

Key features include pulse ignition, oxygen depletion sensors (ODS), and tip-over safety switches, ensuring safe operation. Different models, such as the MH9B and MH18B (Big Buddy), offer varying BTU outputs to suit different space sizes.
Proper understanding of these features, detailed in the operating instructions, is crucial for maximizing performance and safety. The “Buddy” heaters are registered trademarks of Enerco Group, Inc., emphasizing their established reputation in the portable heating market.
Model Variations: MH9B, MH18B, and More
The Mr. Heater Buddy series encompasses several models, each designed for specific heating needs. The MH9B, a popular choice, delivers 9,000 BTU, suitable for smaller spaces. The MH18B “Big Buddy” doubles the heating power to 18,000 BTU, effectively warming larger areas.
Variations also exist with differing features, such as built-in fans for wider heat distribution. Online resources, including downloadable manuals from ManualsBase, provide detailed specifications for each model. Understanding these differences is vital when selecting the appropriate heater for your application.
Always refer to the specific manual for your model, as operating instructions and safety precautions can vary. These heaters are clean burning, offering a portable solution for cold environments.
Safety Precautions: Critical Information
Prioritizing safety is paramount when operating a Mr. Heater Buddy. Carbon monoxide (CO) is a serious risk; ensure adequate ventilation, never using the heater in enclosed spaces. Maintain a safe distance – at least three feet – from combustible materials like furniture and curtains.
The heater’s Oxygen Depletion Sensor (ODS) shuts off the unit if oxygen levels drop, but this isn’t a substitute for proper ventilation. Regularly inspect the heater for damage, and never leave it unattended while operating.
Follow all instructions in the owner’s manual to prevent fire, explosion, or injury. Failure to adhere to these precautions can result in property damage or loss of life.
Carbon Monoxide (CO) Risks and Prevention
Carbon monoxide (CO) is a colorless, odorless gas that can be deadly. Mr. Heater Buddy heaters produce CO during combustion, making ventilation absolutely critical. Never operate the heater indoors, in tents, or in any unventilated area.
Symptoms of CO poisoning include headache, dizziness, nausea, and confusion. If you experience these symptoms, immediately get fresh air and seek medical attention.
Install a CO detector with a battery backup in the same room as the heater as an added safety measure. Regularly inspect the heater for leaks or damage. Proper usage, as outlined in the manual, minimizes CO risk.
Proper Ventilation Requirements
Adequate ventilation is paramount when using a Mr. Heater Buddy. The manual stresses that these heaters consume oxygen and release carbon monoxide, necessitating airflow. Operate the heater in a well-ventilated space, ideally with at least one window or door open.
A minimum of 4 square inches of free opening is generally recommended per 1,000 BTU/hr of heater input. Ensure the ventilation path isn’t obstructed. Avoid using the heater in confined spaces like sheds or garages without substantial airflow.
Regularly check for proper ventilation, especially in changing weather conditions. Failure to ventilate correctly can lead to carbon monoxide poisoning.
Safe Distance from Combustibles
Maintaining a safe distance between the Mr. Heater Buddy and combustible materials is critical for preventing fires. The manual explicitly states a minimum clearance of 36 inches from walls, furniture, curtains, and any flammable objects. This includes paper, clothing, and liquids like gasoline;
Never place the heater directly on carpets or linoleum, as some materials may discolor due to radiant heat. Use a protective underlayment if necessary. Ensure overhead clearances are also sufficient, avoiding low-hanging ceilings or shelves.
Always supervise the heater while in operation and be mindful of surrounding materials. Ignoring these precautions can result in a dangerous fire hazard.
Setting Up Your Mr. Heater Buddy
Proper setup is essential for safe and efficient operation of your Mr. Heater Buddy. Begin by ensuring the heater is placed on a level, stable surface. Connecting to a propane tank requires a regulator designed for low-pressure propane appliances – do not use an unregulated tank.
The manual details compatible propane tank sizes; typically, a standard 20lb tank is used. Inspect the connection for leaks using a soapy water solution after attaching the regulator. Before initial startup, verify the heater’s components are intact and the battery is correctly installed for ignition.

Always follow the manufacturer’s instructions for a secure and reliable setup.
Connecting to a Propane Tank
Securely connecting your Mr. Heater Buddy to a propane tank is paramount for safe operation. Utilize only a propane tank with a POL valve, and ensure it’s a 20lb or larger capacity. The heater requires a regulator specifically designed for low-pressure propane appliances; never attempt direct connection without one.
Hand-tighten the regulator to the tank valve, then use a wrench to give it a quarter-turn further. Crucially, test for leaks by applying a soapy water solution to the connection – bubbles indicate a leak. Never use a damaged or corroded tank or regulator.
Refer to the manual for detailed diagrams and warnings regarding proper propane tank connection procedures.
Propane Tank Size and Compatibility
Mr. Heater Buddy heaters are designed for use with standard 20lb, 30lb, or 40lb propane tanks featuring a POL (Portable Cylinder Valve) connection. Larger tanks are permissible, but require a POL adapter if necessary. Compatibility hinges on the regulator’s ability to reduce high-pressure tank propane to the heater’s low-pressure requirement.
Using incorrect tank sizes or incompatible regulators can lead to inefficient heating, dangerous gas leaks, or even heater malfunction. Always verify the regulator is specifically designed for Mr. Heater Buddy models. The manual details acceptable tank types and warns against using damaged or outdated propane containers.
Ensure the tank is upright during operation for optimal fuel flow.

Initial Startup Procedure
Before the first use, carefully inspect the heater and propane tank connections for any damage or leaks. Ensure the area is well-ventilated, following safety precautions outlined in the manual. Connect a fully charged battery to power the ignition system – typically two D-cell batteries are required.
Slowly open the propane tank valve, and then attempt to ignite the heater following the lighting instructions. Observe the pilot light; a steady blue flame indicates proper operation. If ignition fails, immediately close the tank valve and troubleshoot according to the manual’s guidance.
Allow a brief warm-up period before adjusting heat settings.
Operating Instructions
Proper operation of your Mr. Heater Buddy requires strict adherence to the manual’s guidelines. Begin by ensuring adequate ventilation and maintaining the recommended distance from combustible materials. To ignite, follow the step-by-step lighting procedure, typically involving turning the control knob to ‘Pilot’ and pressing the ignition button.
Once lit, the heater offers adjustable heat settings – ‘Low’ and ‘High’ – controlled by the knob. Understand the pulse ignition system; it may click during operation, which is normal. Regularly monitor the heater and never leave it unattended while in use.
Always turn off and disconnect the propane tank when not in use.
Lighting the Heater: Step-by-Step Guide
Before attempting to light your Mr. Heater Buddy, ensure proper ventilation and a fully connected propane tank. First, turn the control knob to the ‘OFF’ position. Slowly open the propane tank valve. Then, turn the control knob to ‘PILOT’ and press and hold the ignition button. Continue holding the ignition button while observing the pilot light.
Once the pilot light is established, release the ignition button. If the pilot doesn’t stay lit, repeat the process. After the pilot is lit, turn the control knob to ‘LOW’ or ‘HIGH’ to select your desired heat setting. Always monitor the flame and ensure stable operation.
Adjusting Heat Settings: Low vs. High
The Mr. Heater Buddy offers two primary heat settings: Low and High, controlled via the adjustment knob. The ‘LOW’ setting provides a gentler warmth, consuming less propane and extending tank life, ideal for maintaining a comfortable temperature in smaller spaces. It’s suitable for prolonged use and conserves fuel.
Conversely, the ‘HIGH’ setting delivers maximum heat output, rapidly warming larger areas. However, it consumes propane at a faster rate. Selecting the appropriate setting depends on the space size, ambient temperature, and desired heating level. Monitor the heater’s performance and adjust accordingly for optimal comfort and efficiency.
Pulse Ignition System Explained
The Mr. Heater Buddy utilizes a pulse ignition system for reliable and convenient lighting; Unlike pilot lights, this system generates a high-voltage spark each time the control knob is turned to the ‘ON’ position, igniting the propane flow; This eliminates the need for matches or lighters, enhancing safety and ease of use.
The system’s effectiveness can be affected by low battery voltage or a damp burner. Ensure the battery is fresh and the burner assembly is clean and dry for consistent ignition. If ignition fails, repeat the lighting procedure several times, checking the propane tank level. A consistent pulse is key to successful operation.
Maintenance and Troubleshooting
Regular maintenance ensures your Mr. Heater Buddy operates safely and efficiently. Periodically clean the burner assembly with a soft brush to remove dust and debris, preventing burner issues. Replace the battery annually, or when ignition becomes weak, as a low battery impacts the pulse ignition system.
Common issues include no ignition or flame problems. Check propane levels, battery condition, and burner cleanliness. If the heater won’t ignite, ensure the gas valve is fully open and repeat the lighting sequence. Flame issues may indicate a dirty burner or insufficient oxygen; ensure proper ventilation. Consult the manual for detailed troubleshooting steps.
Cleaning the Burner Assembly
Maintaining a clean burner assembly is crucial for optimal performance and safety. Before cleaning, always disconnect the propane tank and ensure the heater is completely cool. Use a soft brush, or compressed air, to gently remove dust, lint, and debris from the burner and pilot light area.
Avoid using water or harsh chemicals, as these can damage the components. Inspect the burner for any obstructions in the ports; carefully clear them with a small wire. A clogged burner can cause uneven heating or ignition failure. Regular cleaning, as outlined in the owner’s manual, prevents malfunctions and ensures efficient operation.
Replacing the Battery

The Mr. Heater Buddy relies on a battery for its electronic ignition system. When the heater fails to ignite or exhibits a weak spark, the battery is often the culprit. Typically, these heaters use a standard AA battery. Locate the battery compartment, usually on the underside or back of the unit, and open it.
Remove the old battery and insert a fresh one, ensuring correct polarity (+ and -). Close the compartment securely. Test the ignition by turning the control knob to the ‘Pilot’ position and pressing the ignition button. Refer to your owner’s manual for specific battery replacement instructions and recommended battery types.
Troubleshooting Common Issues: No Ignition, Flame Issues
If your Mr. Heater Buddy fails to ignite, first check the propane tank level and connection. A low tank or loose connection are frequent causes. Next, verify the battery is fresh and correctly installed, as a weak battery hinders ignition. If still no ignition, inspect the burner for obstructions.
For flame issues – a weak or yellow flame – ensure adequate ventilation. Insufficient oxygen can cause incomplete combustion. Also, check for dirt or debris around the burner. If problems persist, consult the owner’s manual or contact customer support; attempting repairs yourself could be dangerous.
Advanced Features & Considerations
The Mr. Heater Buddy incorporates several safety features, including an Oxygen Depletion Sensor (ODS). This crucial component shuts off the heater if oxygen levels drop to unsafe levels, preventing carbon monoxide buildup. Additionally, a tip-over safety switch automatically disables the heater if it’s accidentally knocked over, minimizing fire risk.
High altitude operation requires adjustments. At higher elevations, reduced oxygen levels can affect performance; consult the manual for specific recommendations. Proper understanding of these features and operational considerations ensures safe and efficient use of your Portable Buddy heater, maximizing its benefits while mitigating potential hazards.
Oxygen Depletion Sensor (ODS) Functionality
The Oxygen Depletion Sensor (ODS) is a vital safety component within the Mr. Heater Buddy. Its primary function is to monitor the oxygen levels in the surrounding environment. If the ODS detects a decrease in oxygen concentration – indicating potentially unsafe conditions – it automatically shuts down the heater, preventing the buildup of dangerous carbon monoxide.
Regularly verify the ODS is functioning correctly. A properly operating ODS is crucial for safe indoor use. The sensor’s effectiveness relies on adequate ventilation; ensure the area is well-ventilated as outlined in the manual. Failure to maintain proper ventilation can compromise the ODS’s ability to function effectively.
Tip-Over Safety Switch Explained
The Mr. Heater Buddy incorporates a tip-over safety switch as a crucial protective measure. This switch is designed to automatically shut off the heater if it’s accidentally knocked over or tilted beyond a certain angle. This prevents potential fires or burns by immediately ceasing gas flow to the burner.
It’s essential to test this feature periodically. Gently tilt the heater to confirm the switch engages and the flame extinguishes. Never attempt to bypass or disable this safety mechanism. Always place the heater on a stable, level surface to ensure proper operation and prevent accidental activation of the switch.
High Altitude Operation Adjustments
Operating the Mr. Heater Buddy at high altitudes (above 3,000 feet) requires careful consideration due to reduced oxygen levels. Insufficient oxygen can lead to incomplete combustion, producing carbon monoxide and reducing heater efficiency.
The manual may recommend a smaller orifice jet for optimal performance at higher elevations. This adjustment ensures a proper air-fuel mixture. Always consult the specific manual for your model to determine the correct orifice size. Failure to adjust for altitude can result in a yellow flame, soot buildup, and potentially dangerous carbon monoxide production. Prioritize safety and proper ventilation.
Warranty Information
Mr; Heater provides a limited warranty on the Portable Buddy series, covering defects in materials and workmanship. The duration of the warranty varies by model, typically ranging from one to two years from the date of purchase. Proof of purchase is essential for any warranty claim.
The warranty does not cover damage resulting from misuse, abuse, improper installation, or lack of maintenance. Registering your heater online is often required to activate the full warranty coverage. Contacting Enerco Group, Inc. customer support is necessary to initiate a claim. See the owner’s manual for complete details and limitations.
Coverage Details and Limitations
The Mr. Heater Buddy warranty typically covers defects in materials and workmanship under normal use. This includes issues with the burner assembly, ignition system, and safety features. However, the warranty specifically excludes damage caused by accidents, alterations, misuse, or improper maintenance.
Limitations include coverage voided by unauthorized repairs or modifications. Damage from improper fuel sources or failure to follow operating instructions is also not covered. The warranty doesn’t extend to normal wear and tear. Enerco Group, Inc. reserves the right to repair or replace defective parts, or issue a refund, at their discretion.
Registering Your Heater
Registering your Mr. Heater Buddy is crucial for warranty validation and receiving important safety updates. While not always mandatory for warranty claims, registration streamlines the process significantly. It allows Enerco Group, Inc. to directly contact you regarding recalls or critical product information.
Registration typically involves providing your heater’s model number, serial number, and purchase date through an online form or mailed-in card. Keep your purchase receipt as proof of purchase, as it may be required. Online registration is often the fastest method, ensuring your information is promptly recorded in their system.
Contacting Customer Support
For assistance with your Mr. Heater Buddy, Enerco Group, Inc. offers several avenues for customer support. Their official website is the primary resource, often featuring a comprehensive FAQ section addressing common issues and troubleshooting steps. You can typically find contact information, including phone numbers and email addresses, within the owner’s manual or on their website.

When contacting support, have your heater’s model and serial number readily available to expedite the process. Be prepared to describe the issue in detail, including any error codes or unusual behavior. Online resources and manuals base provide additional support, but direct contact with Enerco ensures tailored assistance.
Specific Model Manuals & Resources
Accessing the correct manual is crucial for safe and effective operation of your Mr. Heater Buddy. Downloadable manuals for popular models like the MH9B Portable Buddy and the MH18B Big Buddy are readily available online through the Mr. Heater website and resources like ManualsBase. These manuals provide detailed instructions specific to each unit.
Beyond the official manuals, numerous online resources offer FAQs, troubleshooting guides, and user forums. Websites dedicated to outdoor and emergency preparedness often feature discussions and tips related to Mr. Heater products. Ensure the resources you consult are reputable and align with the official Enerco Group guidelines for optimal safety and performance.
MH9B Portable Buddy Manual Download
The MH9B Portable Buddy manual is essential for understanding the operation of this compact and efficient propane heater. You can directly download the official user manual from various online sources, including ManualsBase and potentially the Mr. Heater website itself. This document details critical safety precautions, lighting instructions, and maintenance procedures specific to the MH9B model.
The manual covers topics like connecting to a propane tank, adjusting heat settings, and troubleshooting common issues such as no ignition. It also outlines the functionality of key safety features like the oxygen depletion sensor (ODS); Always refer to the downloaded manual for the most accurate and up-to-date information regarding your MH9B heater.
MH18B Big Buddy Manual Download
Accessing the MH18B Big Buddy manual is crucial for safely and effectively operating this higher-output propane heater. Downloadable versions are readily available online through platforms like ManualsBase and potentially directly from Enerco Group, Inc., the manufacturer. This comprehensive guide provides detailed instructions tailored specifically to the MH18B model’s features.
The manual covers essential aspects such as proper ventilation requirements, safe distance from combustibles, and the operation of the pulse ignition system. It also explains the Big Buddy’s dual burner capabilities and troubleshooting steps for issues like flame problems. Reviewing the manual ensures you understand the heater’s limitations and operate it within safe parameters, maximizing its heating potential.

Online Resources and FAQs

Numerous online resources supplement the official Mr. Heater Buddy manual, offering additional support and troubleshooting assistance. Websites like ManualsLib and various forums host frequently asked questions (FAQs) addressing common user concerns, ranging from ignition issues to proper propane tank compatibility.
These platforms often feature user-submitted tips and solutions, providing practical insights beyond the scope of the printed manual. Searching online can quickly resolve minor problems and clarify operational details. Remember to verify information from unofficial sources against the official Enerco Group documentation to ensure accuracy and safety. Utilizing these resources enhances your understanding and maximizes the heater’s performance.