# MI Fires Tinderbox Large Wood Burning Ecodesign Stove A highly efficient, UK-designed wood-burning stove built to deliver clean, dependable warmth with excellent fuel efficiency. The MI Fires Tinderbox Large produces a well-balanced 5kW heat output with 80.4% efficiency and low emissions – ideal for homeowners looking for real-flame heating with modern environmental performance. ## Why Choose This Model? The Tinderbox Large is an excellent choice if you want efficient wood-burning performance with a generous view of the flames. Its 5kW output makes it well suited to small and medium-sized living spaces, while its A+ energy rating and 80.4% efficiency help make effective use of every log. With Ecodesign compliance, DEFRA approval and low particulate emissions, it combines traditional wood-burning warmth with modern clean-burning technology. ## What’s Included - MI Fires Tinderbox Large wood-burning stove - Ash pan - Operating and installation manual ### Key Features - **5kW heat output** – ideal for small to medium-sized living spaces. - **Wood-burning design** – specifically designed for efficient burning of wood logs. - **Ecodesign 2022 compliant** – meets modern efficiency and emissions requirements. - **Smoke Control Area exempt (DEFRA approved)** – suitable for use in designated Smoke Control Areas. - **80.4% efficiency** – delivers effective heat while making efficient use of fuel. - **A+ energy rating** – excellent energy performance for everyday home heating. - **Low dust emissions** – tested at just 14mg/m³ at 13% O₂. - **Steel body with cast iron door** – durable construction designed for regular use. - **Airwash system** – helps keep the viewing glass clearer for a better view of the flames. - **Large viewing window** – provides a clear and attractive flame picture. - **External air compatible** – suitable for installations where an external air supply is required. - **Designed and engineered in the UK** – developed with a focus on efficient, clean combustion. ### Technical Highlights - Rated heat output: 5kW - Efficiency: 80.4% - Energy rating: A+ - Weight: 76kg - CO emissions at 13% O₂: 0.1% - Mean flue gas temperature: 249°C - Dust emissions at 13% O₂: 14mg/m³ - CnHm emissions at 13% O₂: 79mg/m³ - NOx emissions at 13% O₂: 127mg/m³ - Fuel type: Wood only - Construction: Steel body with cast iron door - Ecodesign 2022: Yes - DEFRA Approved: Yes ### Specifications Guarantee 2 Years Efficiency 80.4% Heat Output 5kW Nox Emissions at 13% O2 127 Nmg/m³ Energy Rating A Plus DEFRA Approved Yes Airwash System Yes Construction Steel Body - Cast Door Flue Outlet Top & Rear (Interchangeable) Flue Size 5-inch (125mm) Fuel Type Wood Only Fuel Grate Type Wood Burning Only Log Length 300 Suitable For 12mm Hearth Yes External Air Compatible Yes Distance to Combustibles - Sides 400mm Distance to Combustibles - Rear 250mm Product Range Tinderbox Sweep Flue through Stove? Yes Colour Black More Colours No Colour Options Blacks Finish Matt ### Product Dimensions ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/mi_fires_tinderbox_large_wood_burning_ecodesign_stove_dimensions.jpg?v=1787903507) Overall Width 490mm Overall Height 633mm Overall Depth 382mm Rear to Centre of Top Flue (F) 145.5mm Width to Centre of Top Flue (E) 245mm Depth to Centre Flue (D) 236.5mm Weight 76kg ### Installation Guide [Click here to view installation guide.](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/mi_fires_install_tbox_lb.pdf?v=1788343142 "Install Guide") ### Liner Kit (Optional) ![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/LINER_KIT.png?v=1788437904) **Liner Kit Includes** - 10m 316-grade flue liner - Pot hanging cowl - Liner adaptor - 500mm vitreous stove pipe - Register plate - Carbon monoxide (CO) alarm - Data plate ## Details - **Price:** 836.85 GBP - 1085.25 GBP - **Vendor:** Mi Fires - **Type:** wood stove ## Variants | Variant | Price | Available | |---------|-------|-----------| | No | 836.85 GBP | In stock | | Yes | 1085.25 GBP | In stock | ## Images - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove - MI Fires Tinderbox Large Wood Burning Ecodesign Stove --- > Source: [Pro-Line Direct](https://prolinedirect.co.uk/products/tinderbox-large-wood-burning-ecodesign-stove) > Updated: 2026-09-07