
Mr. Heater offers a universal propane fuel filter for its Portable Buddy and Big Buddy heaters. The filter is highly recommended for use with these heaters and specific hose models to prevent contaminants from entering the heater and causing blockages. The filter works by trapping oily particulates that can be squeezed from the rubber of some hoses by the high pressure of the propane gas. This prevents the particulates from entering the heater and blocking the fuel flow. While some customers have reported issues with dirty propane, others have praised the filter's effectiveness, ease of installation, and rugged all-metal shell.
| Characteristics | Values |
|---|---|
| Use | For propane heaters |
| Compatibility | Mr. Heater Portable Buddy heaters, Big Buddy heaters, and the Lowes exclusive Buddy hoses F273701, F273702, or F298802 |
| Function | Filters out oily particulates that can block the fuel flow |
| Installation | Easy to install, screws on and fits the fuel line perfectly |
| Construction | Rugged all-metal shell |
| Maintenance | Recommended to be replaced at the end of the heating season |
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What You'll Learn

The Mr Heater fuel filter is an oil trap
The Mr Heater fuel filter prevents this by trapping the oil inside it. Customers have mixed experiences with the fuel filter's effectiveness. Some report that it keeps their heaters clean of contaminants, while others mention issues with dirty propane. However, the majority of customers are satisfied with how the fuel filter fits, noting that it aligns well with the fuel line and works well with Big Buddy heaters.
Mr Heater recommends starting the heating season with a new filter and disposing of it at the end of the season. Using one filter for longer can cause it to fill up with particulates, which will then pass through and begin building up in the heater. Mr Heater currently makes three hose models that do not require a filter: the F273704, F271802, and F271803. These hoses are made from a different chemical compound of rubber that does not have the oily substance that can get into the fuel flow.
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It is designed for use with Mr Heater Portable Buddy heaters
Mr. Heater's Portable Buddy Heaters are propane heaters that are designed for use in a variety of settings, including camping, workshops, job sites, patios, and more. They are equipped with advanced features such as an oxygen depletion sensor (ODS) and an improved tip-over safety switch, which ensures a worry-free heating experience. The heaters provide adjustable heat output ranging from 4,000 to 9,000 BTUs, making them suitable for spaces up to 225 sq. ft.
The Mr. Heater Universal Propane Fuel Filter is designed to be used with the Portable Buddy Heaters. It helps keep the heaters free from contaminants, ensuring optimal performance and reducing maintenance costs associated with clogged hoses and propane contaminants. The fuel filter is highly recommended when purchasing the Portable Buddy Heaters and specific hoses, such as the F273701, F273702, or F298802 (Lowes exclusive) Buddy hoses.
The fuel filter is easy to install, with a simple screw-on mechanism that aligns well with the fuel line. It features a rugged all-metal shell, providing dependable performance and protection against unexpected failures. The filter is most commonly used with bulk cylinder and hose assemblies, ensuring a clean and efficient fuel supply to the heater.
The Mr. Heater Portable Buddy Heaters and the accompanying fuel filter offer a safe, reliable, and efficient heating solution for a variety of indoor and outdoor spaces. The fuel filter helps maintain the heaters' performance by preventing contaminants from entering the system, making it a valuable accessory for optimal heater functionality.
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It is also used with Big Buddy heaters
The Mr. Heater Universal Propane Fuel Filter is highly recommended for use with the Mr. Heater Portable Buddy heaters and the Big Buddy heater. The Big Buddy heater is a portable, radiant propane heater that can be used indoors and outdoors. It is the most popular portable propane heater in North America, providing enclosed spaces like cabins with up to 450 sq. ft. of coverage.
The fuel filter is used to keep the heater clean of contaminants, which can otherwise lead to clogged heaters. It is most commonly used with bulk cylinder and hose assemblies. The filter is easy to install, with a fitting that screws right onto the heater where the propane tank is connected.
The Mr. Heater brand offers a range of Buddy Family heaters, which are popular for their portability and convenience for indoor and outdoor heating. The heaters are equipped with safety features such as an Oxygen Depletion Sensor (ODS) and an accidental tip-over safety shut-off mechanism.
It is important to note that the 10' Buddy hose does not require a filter as it does not contain any oily contaminants or plasticizers. However, all other hoses for the Buddy system will need a filter to prevent oil and plasticizers from leaching out and clogging the heater.
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It is highly recommended when purchasing specific hoses
The Mr. Heater Universal Propane Fuel Filter is highly recommended when purchasing specific hoses for your heater. The filter is designed to prevent contaminants from entering your heater and causing blockages.
For example, some hoses may emit oils that can be pulled into the fuel line by the high pressure of the propane gas. This can result in blockages in the heater's fuel line, affecting its performance. The fuel filter acts as an oil trap, causing these particulates to stick inside it and thereby filtering the fuel before it enters the heater.
When purchasing a Mr. Heater Portable Buddy heater, it is highly recommended to also purchase the fuel filter, especially when using the F273701, F273702, or F298802 (Lowe's exclusive) Buddy hoses. These hoses have been known to emit oily substances that can be pulled into the fuel line and cause blockages. The filter can help prevent this issue and ensure the proper functioning of your heater.
Additionally, the fuel filter is also recommended for use with the Mr. Heater Big Buddy heater. Customers have reported that the filter fits well with the Big Buddy model and helps to prevent clogging. It is important to note that not all hoses emit oils, and Mr. Heater offers three hose models that do not require a filter: the F273704, F271802, and F271803. These hoses are made from different materials or attach to low-pressure lines, eliminating the issue of oily substances being pulled into the fuel line.
Overall, the Mr. Heater Universal Propane Fuel Filter is a valuable accessory when purchasing specific hoses for your heater. It helps to prevent contaminants and blockages, ensuring the proper functioning of your heating system.
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The filter should be replaced at the end of the heating season
The Mr. Heater fuel filter is highly recommended for users of the Mr. Heater Portable Buddy Heater and the Big Buddy Heater. It is also recommended for use with the F273701, F273702, or F298802 (Lowes exclusive) Buddy hoses. The filter is an oil trap, preventing oily particulates from clogging the heater.
Oily substances can be squeezed from the rubber of some hoses by the high pressure exerted by the propane bottle. These oily particulates can then be pulled along with the propane flow and deposited in the lines in the Buddy heater, blocking the fuel flow. The hollow filter causes these particulates to stick inside it, thereby filtering the fuel.
However, the filter will fill up with particulates over time, and once full, the particulates will begin to pass through and build up in the heater. Therefore, it is recommended to replace the filter at the end of the heating season.
Mr. Heater manufactures three hose models that do not require a filter: the F273704, the F271802, and the F271803. These hoses are made from a different chemical compound of rubber that does not contain the oily substance that can get into the fuel flow.
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Frequently asked questions
The Mr. Heater Universal Fuel Filter is used to prevent contaminated hoses from gumming up propane appliances. It is highly recommended when purchasing the Mr. Heater Portable Buddy heaters and Buddy hoses.
The filter is hollow, causing oily particulates to stick inside it, thereby filtering the fuel. It is recommended to start the heating season with a new filter and dispose of it at the end of the season.
Customer reviews for the Mr. Heater Fuel Filter are mixed. Some report that it keeps their heaters clean of contaminants, while others mention issues with dirty propane. Some customers also praise the fuel filter's construction, noting its rugged all-metal shell and dependable performance.











































