Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12 Review

Let’s Talk About Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12

As an experienced outdoor and tactical gear specialist, my expertise might seem an odd fit for a Roof Jack Flue Assembly. However, my background in evaluating equipment in harsh conditions translates well to assessing the durability and reliability of any product designed to withstand the elements. The Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12 is designed to vent combustion gases from furnaces, a critical component in ensuring safe and efficient heating, especially in remote or challenging environments.

My interest in the Intertherm 903678A stemmed from a consulting project for a small, off-grid community in the mountains. They needed a reliable and easily maintainable heating system. After researching various furnace options, the Intertherm models were a strong contender. A crucial part of the equation was selecting the correct flue assembly for the roof pitch and ensuring proper ventilation, and that led me to this specific model.

The Intertherm 903678A arrived in a surprisingly compact package. My first impression was that it felt solid, though I couldn’t fully assess the material quality without installing it. Compared to generic flue kits, the Intertherm assembly appeared to be purpose-built for their furnaces, promising better compatibility and performance.

Initially, I was cautiously optimistic. The key was how easily it would integrate with the furnace and how well it would withstand the extreme weather conditions in the mountains.


Real-World Testing: Putting Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12 to the Test

First Use Experience

My primary testing ground was the off-grid community’s project site. Installation took place on a day with moderate wind and a slight drizzle. The Intertherm 903678A was designed for a 4/12 roof pitch, which matched the cabins perfectly.

Ease of use was a major factor. The adjustable extension (27″ to 47″) was incredibly helpful in accommodating variations in roof overhang and avoiding obstructions. It’s something that a fixed-length flue could never accomplish.

There were no major issues during the initial installation. The assembly felt secure once properly fastened to the roof and connected to the furnace exhaust. A minor surprise was the weight of the assembly when fully extended, requiring extra support during installation.

Extended Use & Reliability

After several weeks of use, the Intertherm 903678A has performed admirably. The mountainous region experiences significant temperature fluctuations, heavy snowfall, and strong winds. Despite these challenges, the flue assembly has remained stable and leak-free.

Durability is critical. I’ve observed no signs of rust or corrosion, suggesting the materials used are high-quality and weather-resistant. Regular visual inspections are still a must.

Maintenance has been minimal. A simple check for obstructions (e.g., bird nests, snow buildup) is all that’s required. Compared to other flue systems I’ve worked with, the Intertherm assembly’s straightforward design simplifies maintenance. I anticipate it will outperform simpler, less robust systems in the long run.

Breaking Down the Features of Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12

Specifications

  • Compatibility: Specifically designed for Intertherm M1 Series Hot Surface Ignition Furnaces, M1 Series Gas Gun Furnaces, and M5 Series Oil Gun Furnaces. Compatibility is paramount; always double-check your furnace model.
  • Extension: Adjustable length from 27″ to 47″ to accommodate various roof configurations. This adjustable range offers flexibility in installation, crucial for different roof overhangs.
  • Slant/Pitch: Designed for a 4/12 roof pitch. This specific pitch ensures proper venting and prevents backdraft, a safety concern.
  • Material: The material composition is not explicitly stated, but visual inspection suggests galvanized steel or a similar corrosion-resistant metal. The material must withstand harsh weather conditions and corrosive flue gases.
  • Function: Provides fresh air for combustion and vents flue gases. Proper ventilation is vital for efficient furnace operation and preventing carbon monoxide buildup.

These specifications matter because they directly impact the safety, efficiency, and longevity of the heating system. The correct pitch and extension are critical for proper ventilation, while the material’s durability ensures it can withstand the elements.

Performance & Functionality

The Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12 excels at its primary job: safely and efficiently venting flue gases. The adjustable extension allows for precise placement, minimizing the risk of wind interference or snow blockage.

A significant strength is its compatibility with Intertherm furnaces, ensuring a proper fit and optimal performance. The main area for potential improvement is providing clearer information about the specific materials used in construction.

It definitely meets expectations. It is a robust and reliable flue assembly specifically designed for the Intertherm furnace models it supports.

Design & Ergonomics

The Intertherm 903678A’s design is functional and straightforward. The materials appear to be durable and corrosion-resistant, though the exact composition isn’t specified. The weight, while manageable, is noticeable when fully extended.

It is user-friendly. Installation is relatively simple, thanks to the adjustable extension and clear (though basic) instructions. There’s a minimal learning curve, especially for those familiar with furnace installations.

Durability & Maintenance

The Intertherm 903678A appears to be built to last. With proper maintenance, including regular inspections and cleaning, it should provide years of reliable service. The galvanized steel (or similar material) should resist rust and corrosion, extending its lifespan.

Maintenance is straightforward. Periodic checks for obstructions and cleaning of any accumulated debris are all that’s typically required. Repair might involve replacing sections if damaged, but the assembly’s modular design could simplify this process.

Accessories and Customization Options

The Intertherm 903678A doesn’t come with extensive accessories or customization options. It’s a specialized component designed for a specific purpose.

Aftermarket modifications might include adding a rain cap or spark arrestor, depending on local regulations or environmental concerns. Compatibility with generic flue accessories should be verified before installation.

Pros and Cons of Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12

Pros

  • Direct compatibility with Intertherm M1 and M5 series furnaces ensures proper fit and function.
  • Adjustable extension (27″ to 47″) provides installation flexibility for various roof configurations.
  • Durable construction with corrosion-resistant materials ensures long-term reliability.
  • Designed for a 4/12 roof pitch, optimizing venting and preventing backdraft.
  • Relatively easy installation process, even for those with limited experience.

Cons

  • Material composition is not explicitly stated in the product description.
  • Higher price point compared to generic flue kits, potentially deterring some buyers.


Who Should Buy Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12?

Perfect for: Homeowners or contractors installing or replacing Intertherm M1 or M5 series furnaces. Individuals seeking a reliable and properly fitted flue assembly for their heating system. Those who prioritize safety and efficient venting of flue gases.

Who should skip this product? Individuals with furnaces from other manufacturers, as compatibility is not guaranteed. Those looking for the absolute cheapest flue solution, as generic kits may be more affordable (but potentially less reliable).

Must-have accessories or modifications? A rain cap or spark arrestor, depending on local regulations and environmental conditions. High-temperature sealant for connecting the flue assembly to the furnace exhaust.

Conclusion on Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12

The Intertherm 903678A Roof Jacks Flue Assy 27″ 47″ Slant 4/12 is a purpose-built, reliable solution for venting Intertherm furnaces. While it may be pricier than generic alternatives, its direct compatibility, adjustable extension, and durable construction justify the cost.

The value proposition is strong. It offers peace of mind knowing that the flue assembly is designed to work seamlessly with the furnace, ensuring safe and efficient operation.

I would personally recommend it to anyone installing or replacing an Intertherm M1 or M5 series furnace. It’s a worthwhile investment in the long-term performance and safety of your heating system. Don’t compromise on ventilation; choose the Intertherm 903678A for a worry-free heating experience.

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