A powerful, UK-designed multifuel stove built to deliver dependable warmth across larger living spaces. The MI Fires Derwent Large produces a substantial 8kW heat output with 79.4% efficiency and flexible fuel options – ideal for homeowners who need stronger heating performance without compromising on modern emissions standards.
Why Choose This Model?
The Derwent Large is an excellent choice if you need a higher-output stove with the flexibility to burn both wood and approved smokeless fuels. Its 8kW heat output makes it well suited to larger rooms and more open living spaces, while its 79.4% efficiency and A energy rating help make effective use of fuel. With Ecodesign compliance, DEFRA approval and external air compatibility, it combines strong everyday heating with modern clean-burning performance.
Key Features
- 8kW heat output – ideal for larger living rooms, open-plan spaces and properties with greater heating requirements.
- Multifuel capability – burns wood logs and approved smokeless fuels.
- Ecodesign 2022 compliant – meets modern efficiency and emissions requirements.
- Smoke Control Area exempt (DEFRA approved) – suitable for use in designated Smoke Control Areas.
- 79.4% efficiency – delivers dependable heat while making efficient use of fuel.
- A energy rating – efficient performance for everyday home heating.
- 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.
- External air compatible – suitable for installations where an external air supply is required.
- Multifuel grate – designed for burning both wood and approved smokeless fuel.
- Designed in the UK – developed with a focus on reliable heating, efficient combustion and low emissions.
Technical Highlights
- Rated heat output: 8kW
- Efficiency: 79.4%
- Energy rating: A
- Weight: 100kg
- NOx emissions at 13% O₂: 101mg/Nm³
- Fuel type: Multifuel
- Construction: Steel body with cast iron door
- Ecodesign 2022: Yes
- DEFRA Approved: Yes
- External air compatible: Yes
- Flue size: 5-inch (125mm)
- Flue outlet: Top only
Specifications
| Guarantee | 2 Years |
|---|---|
| Efficiency | 79.40% |
| Heat Output | 8 kW |
| Nox Emissions at 13% O2 | 101 mg/Nm3 |
| Energy Rating | A |
| DEFRA Approved | Yes |
| Airwash System | Yes |
| Construction | Steel Body - Cast Door |
| Flue Outlet | Top Only |
| Flue Size | 5-inch (125mm) |
| Fuel Type | Wood or Multi Fuel |
| Fuel Grate Type | Multifuel Grate (to burn Wood & Smokeless Coal) |
| Suitable For 12mm Hearth | Yes |
| External Air Compatible | Yes |
| Distance to Combustibles - Sides | 580 mm |
| Distance to Combustibles - Rear | 380 mm |
| Sweep Flue through Stove? | Yes |
| Colour | Black |
| More Colours | No |
| Colour Options | Blacks |
| Finish | Matt |
Product Dimensions
| Overall Width | 585.5 mm |
|---|---|
| Overall Height | 504 mm |
| Overall Depth | 317.5 mm |
| Rear to Centre of Top Flue (F) | 127.5 mm |
| Width to Centre of Top Flue (E) | 252 mm |
| Depth to Centre Flue (D) | 190mm |
| Weight | 100 Kg |
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