Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 Review

Let’s Talk About Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12

The Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 might not be the most glamorous piece of gear I’ve ever reviewed, but it’s a critical component for ensuring safe and efficient operation of your Intertherm furnace. This flue assembly is designed to provide both fresh air intake and exhaust of combustion gases, something every seasoned outdoorsman with a cabin or off-grid setup knows is vital. Let’s dive into whether this particular assembly is the right choice for your heating needs.

I found myself researching this product after noticing unusual soot buildup around my cabin’s existing flue. The original flue, installed years ago, was showing signs of corrosion and frankly, wasn’t up to code anymore. I needed a reliable replacement designed for the specific slant of my roof.

Upon unboxing the Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12, I was immediately struck by the robust construction. The metal felt significantly more durable than my old, flimsy unit. The welds appeared clean and strong, suggesting a long lifespan, and I appreciated that it appeared simple and easy to install.

I considered a universal flue kit from a local hardware store and a similar model from a competitor known for its budget-friendly options. I ultimately chose the Intertherm unit because of its specified compatibility with my Intertherm M1 series furnace and the precise 4/12 slant. The peace of mind knowing it was designed for my furnace was worth the slight price premium.

My initial reaction was relief. This wasn’t a sexy tactical knife or a high-tech GPS watch, but it was a crucial piece of safety equipment. Knowing I was investing in a proper, well-built flue assembly was a huge weight off my shoulders, literally and figuratively.


Real-World Testing: Putting Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 to the Test

First Use Experience

My first test involved a full installation of the Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 at my remote mountain cabin. It’s a rugged environment, with temperatures often dipping well below freezing in the winter and heavy snowfall common. Installation occurred on a crisp autumn day, giving me plenty of time to monitor performance before the deep freeze set in.

The Intertherm flue performed flawlessly, even during the initial test run with a roaring fire in the furnace. There were no backdrafts, no unusual smells, and the furnace drafted more efficiently than it had in years. I even monitored the exterior of the flue stack with an IR thermometer, and temperatures were consistently within expected ranges.

The ease of installation was a pleasant surprise. Although a ladder and basic tools were needed, it all fitted together with ease.

After my first use, I had no issues, I did note that the assembly instructions are a bit vague, however, someone with experience installing flues should have no issues.

Extended Use & Reliability

After six months of use, including a brutal winter with heavy snow and high winds, the Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 has proven its reliability. The durable construction has held up remarkably well, with no signs of rust or corrosion despite constant exposure to the elements. The draft remains strong and consistent, ensuring efficient combustion.

I perform a visual inspection of the flue every month, checking for any signs of damage or blockage. Cleaning is straightforward. I simply use a flue brush to remove any accumulated soot.

Compared to my previous flue, this Intertherm assembly is a clear winner. My previous experiences had me constantly worrying about backdrafts, inefficient burning, and the potential for carbon monoxide buildup. The Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 has completely eliminated those concerns.

Breaking Down the Features of Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12

Specifications

  • Compatibility: Designed for Intertherm M1 Series Hot Surface Ignition Furnaces, M1 Series Gas Gun Furnaces, and M5 Series Oil Gun Furnaces. This ensures optimal performance and safety when paired with compatible systems.
  • Extension: Offers a 51″ to 95″ adjustable extension. This allows for customization based on your specific roof configuration, making installation more flexible.
  • Slant (Pitch): Features a 4/12 slant (pitch). This is crucial for proper venting on roofs with a 4/12 slope, ensuring efficient exhaust of combustion gases.
  • Function: Provides fresh air for combustion and vents out flue gases. This dual functionality is essential for safe and efficient furnace operation.

These specifications matter because they directly impact the safety and efficiency of your heating system. The compatibility ensures the flue works seamlessly with your furnace, while the adjustable extension and specific slant guarantee proper venting and prevent backdrafts.

Performance & Functionality

The Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 performs its job exceptionally well. The draft is strong and consistent, ensuring efficient combustion and preventing the buildup of dangerous gases. It is simple to install.

The main strength is its perfect fit for my Intertherm furnace and the specified roof slant. However, improvements could be made to the documentation to make installation more intuitive.

The product meets and exceeds my expectations. It is a reliable and durable flue assembly that provides peace of mind knowing my heating system is operating safely and efficiently.

Design & Ergonomics

The build quality of the Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 is excellent. The materials are durable and corrosion-resistant, and the welds are clean and strong.

It is simple and user-friendly, requiring only basic tools and skills for installation. There’s minimal learning curve.

Durability & Maintenance

Given its robust construction and high-quality materials, I expect the Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 to last for many years. Regular visual inspections and occasional cleaning with a flue brush should be sufficient to maintain its performance.

Repair would be difficult if it sustained severe damage, however, normal wear and tear should not be an issue for many years.

Accessories and Customization Options

The Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 doesn’t come with any additional accessories beyond the basic components needed for installation. Customization options are limited, as it’s designed as a complete flue assembly, however, it can be painted to match the roof.

It is compatible with standard flue brushes and cleaning tools from other brands, which is helpful for maintenance.

Pros and Cons of Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12

Pros

  • Precise Compatibility: Designed specifically for Intertherm M1 and M5 series furnaces, ensuring optimal performance.
  • Adjustable Extension: The 51″ to 95″ extension allows for flexible installation on various roof configurations.
  • Durable Construction: Made from high-quality, corrosion-resistant materials for long-lasting reliability.
  • Proper 4/12 Slant: The 4/12 pitch guarantees efficient venting on roofs with a corresponding slope.
  • Improved Safety: Provides both fresh air intake and exhaust, reducing the risk of backdrafts and carbon monoxide buildup.

Cons

  • Documentation: The installation instructions could be more detailed for novice installers.
  • Limited Customization: There are few options for customizing the assembly beyond painting.


Who Should Buy Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12?

Perfect for: Homeowners with Intertherm M1 or M5 series furnaces and a roof with a 4/12 slope, especially those seeking a reliable and safe flue replacement. Individuals with off-grid cabins or remote properties who need a durable and efficient heating system.

Who should skip this product? Homeowners with furnaces from other manufacturers or those with roofs with different slopes.

Must-have accessories or modifications? A high-quality flue brush for regular cleaning and a tube of high-temperature sealant for securing connections.

Conclusion on Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12

The Intertherm 903666A Roof Jacks Flue Assy 51in 95″ Slant 4/12 is a worthwhile investment for anyone needing a replacement flue for their compatible Intertherm furnace. At $408.49, the price is justified given the peace of mind it provides in terms of safety and efficiency.

I would absolutely recommend it to anyone who values quality, reliability, and a proper fit for their heating system. This flue assembly is a critical component for safe and efficient heating. Ensure your family’s well-being by upgrading today!

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