Aarrow Ecoburn 11 Plus: A High-Output Stove with Flexifuel Versatility

Discover the Ecoburn 11 Plus: a high-output multifuel stove with Flexifuel technology, improved efficiency, and a large glass window for a stunning flame picture.

November 5, 2015
By Reece Toscani
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Stove Spotlights

Power Meets Versatility

For homeowners seeking a stove that can comfortably heat a large living space without sacrificing style, the Aarrow Ecoburn 11 Plus Flexifuel is an impressive contender. With its 11 kW nominal heat output, expansive flame-viewing window, and clever Flexifuel system, this stove is built to deliver serious warmth while giving you flexibility over what fuel you burn.

Aarrow, part of the respected British manufacturer Arada Stoves, has long been known for producing robust, reliable stoves with a practical design ethos. The Ecoburn Plus range represents the evolution of their best-selling Ecoburn line — modernising both performance and looks to meet the demands of today’s stove buyers. The Ecoburn 11 Plus sits proudly as one of the largest models in this family, making it ideal for medium-to-large rooms, open-plan living areas, or rural homes that need dependable high heat output.

In this spotlight, we’ll take a close look at what the Ecoburn 11 Plus offers, how it compares to its predecessor, and why it deserves consideration if you’re looking for a stove that can combine style, substance, and serious heating ability.

Design & Build: A Refined Classic

One of the most striking features of the Ecoburn 11 Plus is its large, gently curved viewing window, offering a wide, uninterrupted view of the flames. Aarrow improved the door design compared to the original Ecoburn by introducing concealed hinges, which give the stove a cleaner, sleeker front profile.

The stove is constructed from high-grade steel with a cast-iron door, a combination chosen to balance strength with efficiency. As with all Aarrow stoves, it comes backed by a lifetime guarantee on the stove body, a mark of confidence in its durability. Inside, stainless steel components such as the ashpan and throat plate are fitted for long-term resilience.

Its footprint is surprisingly compact for such a powerful stove, measuring 638 mm high × 625 mm wide × 381 mm deep, making it easier to position in a fireplace chamber or install freestanding without dominating the room. For those who want more presence, there’s also an optional log store base that adds extra height and provides handy storage.

Performance & Output: Built for Larger Spaces

At its heart, the Ecoburn 11 Plus delivers a nominal output of 11 kW, making it capable of heating larger living areas with ease. This level of performance makes it particularly well-suited for farmhouses, rural cottages, or modern open-plan spaces where smaller stoves would struggle to keep up.

The Flexifuel system is central to its appeal, allowing you to burn either seasoned logs or smokeless solid fuels with equal efficiency. Unlike earlier Ecoburn grates, the Flexifuel design ensures more complete combustion across fuel types, giving you genuine flexibility depending on availability and preference.

With an efficiency rating of around 74–77%, the Ecoburn 11 Plus stands comfortably among the leading stoves of its class in 2015. Air controls are smooth and responsive, giving you fine-tuned control over the burn rate. In practice, that means you can dial up the heat for cold winter evenings or ease it back when steady background warmth is all that’s required.

The “Plus” Difference: Evolution Over the Original Ecoburn

The Ecoburn 11 Plus isn’t just a rebranded version of the original — it represents a significant step forward in both design and performance. Key improvements over the earlier Ecoburn 11 non-Plus include:

Bigger flame window – The Plus offers a dramatically larger glass panel, giving you a much better flame view.
Concealed hinges – A cleaner, more modern look that integrates seamlessly into both traditional and contemporary interiors.
Enhanced Airwash system – Improved airflow over the glass keeps it clearer for longer.
Flexifuel grate system – Replaces the older grate design, offering smoother operation and more efficient burning of both logs and solid fuels.
Higher efficiency – The Plus edges ahead in performance, making better use of every log.
Refined controls and sealing – Easier to manage, with more consistent performance across different fuel loads.

For anyone who admired the original Ecoburn but wanted a sleeker aesthetic and improved day-to-day usability, the Plus is a clear upgrade.

Thinking about something sleeker?
Explore our contemporary stove spotlights — like the Rocal Angle, a wall-mounted corner model with a striking flat glass front that blends cutting-edge design with efficient heating.

Features That Stand Out

Beyond its strong heat output, the Ecoburn 11 Plus packs in a number of user-friendly features:

Airwash system keeps the glass clean, meaning less maintenance and uninterrupted flame views.
Secondary combustion ensures cleaner burning and greater efficiency by reigniting unburnt gases.
Externally controlled riddling grate makes ash management simple, without needing to open the door.
Top or rear flue exit gives flexibility during installation.
Preheated secondary air supply contributes to both performance and reduced emissions.
Self-levelling rear legs ensure stability on uneven hearths.

All these details show how Aarrow has taken feedback from real-world users and refined the design to make everyday operation as smooth and enjoyable as possible.

Practical Considerations

When choosing a stove, it’s not just about performance — practical fit matters too. The Ecoburn 11 Plus accepts logs up to 500 mm in length, reducing the need for frequent refuelling. Its flue outlet is 127 mm (5 inches), a relatively compact size for a stove of this output, making installation more straightforward.

Clearances to combustibles are generous — around 800 mm at the rear and 500 mm at the sides — which must be factored into planning, but the compact depth helps in tighter installations. While the Ecoburn Plus range offers excellent performance, it’s worth noting that the 11 Plus is not DEFRA exempt, meaning it isn’t suitable for smoke control zones. For rural or non-restricted areas, however, it’s a powerhouse of a stove.

See It in Action

To get a real sense of what the Ecoburn 11 Plus is like in use, we filmed a detailed video spotlight showing its design, features, and controls in action. You can watch the full video over on our Fireplace Products YouTube channel, where we take you up close with the stove and demonstrate exactly what makes it special.

User Experience & Value

Owners of the Ecoburn 11 Plus often highlight its strong, consistent heat output, making it a true workhorse for family living. The large glass window is regularly praised for its flame picture, especially when paired with the upgraded Airwash system.

Some feedback suggests that it can feel “too hot” when run on a low setting, which underlines its suitability for larger spaces — in smaller, well-insulated rooms, the output may be overpowering.

Price-wise, the Ecoburn 11 Plus sits in the upper-mid range, but buyers benefit from the lifetime warranty, robust engineering, and performance that rivals more expensive brands. When viewed as a long-term investment, the value proposition is strong.

A Stove for Homes That Need Serious Heat

The Aarrow Ecoburn 11 Plus Flexifuel is not a stove for modest spaces — it’s designed for homes that demand significant, dependable heat. With its improved looks, larger viewing glass, and more advanced features compared to the original Ecoburn, it brings the range firmly up to date.

For those in rural areas who want a stove that will not only heat a large room but also provide a beautiful focal point, the Ecoburn 11 Plus is a superb option. Its combination of power, flexibility, and aesthetics makes it one of the standout high-output stoves available today.

About This Spotlight

This Stove Spotlight was originally published on the Fireplace Products blog back in 2014. As part of our acquisition of the Fireplace Products YouTube Channel, we also gained access to these historic posts, which were written by myself and my team. To preserve the archive and maintain continuity with the videos, we’ve re-formatted and re-uploaded them here using their original post dates.

If you’d like to explore our latest reviews and features, you can find all of our most recent Stove Spotlights here.

Have you ever owned an Aarrow stove, or would you consider the Ecoburn 11 Plus for your home? Leave us a comment below — we’d love to hear your thoughts.

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Old Woodburners

Reece Toscani

Reece has over two decades in the fireplace and stove world — testing, reviewing, and occasionally getting covered in soot, all in the name of wood-fired home heating. He cuts through the nonsense, busts the myths, and shares straight-talking advice to help you enjoy your stove without the confusion. From Fireplace Products to Redefining Woodburners, if it burns wood, he’s probably tested it, fixed it, or argued about it. Now, through Woodburner Insights, he shares that experience with the world — both here and on YouTube.