MI Fires Derwent Small Wood Burning Ecodesign Stove

A compact, UK-designed wood-burning stove built to deliver efficient warmth with clean, controlled combustion. The MI Fires Small Derwent produces a practical 4.2kW heat output with 79.2% efficiency – ideal for smaller living spaces, well-insulated rooms and homeowners who want dependable wood-burning performance in a compact design.

Why Choose This Model?

The Small Derwent is an excellent choice if you want a lower-output wood-burning stove that won’t overpower a smaller room. Its 4.2kW heat output makes it particularly well suited to compact living spaces, while its 79.2% efficiency and A energy rating help make effective use of every log. With Ecodesign compliance, DEFRA approval and external air compatibility, it combines traditional wood-burning warmth with modern heating performance.

Key Features

• 4.2kW heat output – ideal for smaller living spaces and well-insulated rooms.
• 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.
• 79.2% 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.
• Top or rear flue outlet – interchangeable installation options provide added flexibility.
• Compact dimensions – well suited to smaller fireplaces and living spaces.
• Designed in the UK – developed with a focus on efficient combustion and low emissions.

Technical Highlights

• Rated heat output: 4.2kW
• Efficiency: 79.2%
• Energy rating: A
• Weight: 50kg
• NOx emissions at 13% O₂: 64mg/Nm³
• Fuel type: Wood only
• Construction: Steel body with cast iron door
• Ecodesign 2022: Yes
• DEFRA Approved: Yes
• External air compatible: Yes
• Flue size: 5-inch (125mm)