
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

| 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.
Liner Kit (Optional)

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