How to Clean a Mr. Heater Propane Filter: A Comprehensive Guide

Maintaining the propane filter on your Mr. Heater Portable Buddy is crucial for ensuring optimal performance and safety. This comprehensive guide will walk you through the step-by-step process of cleaning and maintaining your Mr. Heater propane filter, providing you with technical specifications, DIY insights, and valuable references to help you keep your heater running at its best.

Preparation and Inspection

Before starting the cleaning process, it’s essential to allow the heater to cool down completely. This will ensure your safety and prevent any potential burns. Once the heater has cooled, visually inspect the pilot flame and burner. The pilot flame should be a completely blue, sharp torch-like flame. If the flame has a yellow hue and appears lazy, like a candle flame, it’s an indication that the pilot tube may be clogged.

Cleaning the Pilot Tube

how to clean a mr heater propane filter

To clean the pilot tube, you’ll need the following supplies:
– Q-tip or pipe cleaner
– Isopropyl rubbing alcohol
– Gas computer duster

  1. Remove the wire guard from the front of the heater.
  2. Using a Q-tip dipped in isopropyl rubbing alcohol, thoroughly clean the pilot tube.
  3. Employ the gas computer duster to blow out the tube with three or four quick bursts of air.
  4. Check the casing, main burner, and burner tile for any dust, lint, or spider webs, and clean as necessary using a vacuum or gas computer duster.

Replacing the Filter

If your Mr. Heater Portable Buddy is equipped with a hose and filter system, it’s recommended to replace the filter annually or as needed. The filter is a simple baffled chamber that allows contaminants to precipitate out of the propane, preventing them from entering the heater’s internal components.

The filter’s lifespan can vary depending on factors such as the quality of the propane, the frequency of use, and the environment in which the heater is operated. If you notice an unusual smell coming from your heater, it may be an indication that the filter needs to be replaced.

Technical Specifications

The Mr. Heater Portable Buddy Heater is designed to operate at elevations up to 7,000 feet, thanks to its advanced Oxygen Depletion Sensor (ODS) safety system. This feature ensures that the heater shuts off automatically if the oxygen levels in the surrounding environment drop below a safe threshold.

It’s important to note that the heater’s wire guard will remain hot even after the heater is turned off. Therefore, it’s crucial to ensure that the guard has thoroughly cooled before storing the heater.

When using the Mr. Heater Portable Buddy, always disconnect the LP cylinders from the heater when not in use. Additionally, do not operate, store, or remove the cylinder near any flammable items or ignition sources.

DIY Perspective

While the Mr. Heater propane filter is not designed to be cleaned and reused, some users have explored the possibility of back-flushing the filter with compressed air or a solvent, followed by air, to clean and reuse it. This approach could be a cost-effective solution, but it requires further investigation and experimentation to ensure safety and effectiveness.

It’s important to note that any DIY modifications or cleaning methods should be thoroughly researched and tested to avoid potential safety hazards or damage to the heater’s components.


  1. How to Clean and Maintain your Mr. Buddy Heater – YouTube
  2. How often do you change you buddy propane filter? – OOD Magazine
  3. Portable Buddy – Cleaning and Maintenance – YouTube
  4. Mr. Heater Buddy and Filter | Adventure Rider
  5. Mr. Buddy Portable Heater question : r/preppers – Reddit

By following the steps outlined in this comprehensive guide, you can effectively clean and maintain your Mr. Heater propane filter, ensuring the optimal performance and safety of your portable heater. Remember to always prioritize safety and consult the manufacturer’s instructions for any specific guidance or recommendations.