# MI Fires Tinderbox Medium Wood Burning / Multifuel Ecodesign Stove

A highly efficient multifuel stove designed to deliver flexible, dependable heating with exceptionally clean combustion. The MI Fires Medium Tinderbox Multifuel produces a balanced 5kW heat output with impressive 82.5% efficiency and ultra-low emissions – ideal for homeowners who want the freedom to burn wood or approved smokeless fuels without compromising on performance.

## Why Choose This Model?

The Medium Tinderbox Multifuel is an excellent choice if you want the flexibility of multifuel heating combined with excellent efficiency and low emissions. Its 5kW output makes it well suited to small and medium-sized living spaces, while its 82.5% efficiency and A+ energy rating help make effective use of every fuel load. With particularly low dust emissions of just 7mg/m³, it offers clean, reliable performance for modern everyday heating.

## What’s Included

-   MI Fires Medium Tinderbox multifuel stove
-   Multifuel grate
-   Ash pan
-   Operating and installation manual

### Key Features

-   **5kW heat output** – ideal for small to medium-sized living spaces.
-   **Multifuel capability** – burns wood logs and approved smokeless fuels.
-   **Ecodesign 2022 compliant** – meets modern efficiency and emissions requirements.
-   **Smoke Control Area exempt** – suitable for use in designated Smoke Control Areas.
-   **82.5% efficiency** – delivers effective heat while making efficient use of fuel.
-   **A+ energy rating** – excellent energy performance for everyday home heating.
-   **Ultra-low dust emissions** – tested at just 7mg/m³ at 13% O₂ for exceptionally clean combustion.
-   **Strong, dependable construction** – designed for reliable everyday use.
-   **Large viewing window** – provides a clear and attractive view of the flames.
-   **Low CO emissions** – designed to deliver cleaner and more efficient combustion.

### Technical Highlights

-   Rated heat output: 5kW
-   Efficiency: 82.5%
-   Energy rating: A+
-   Weight: 71kg
-   CO emissions at 13% O₂: 0.07%
-   Mean flue gas temperature: 272°C
-   Dust emissions at 13% O₂: 7mg/m³
-   CnHm emissions at 13% O₂: 43mg/m³
-   NOx emissions at 13% O₂: 112mg/m³
-   Fuel type: Multifuel
-   Ecodesign 2022: Yes

### Specifications

Guarantee

2 Years

Efficiency

82.5%

Heat Output

5kW

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 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

600mm

Distance to Combustibles - Rear

450mm

Product Range

Tinderbox

Sweep Flue through Stove?

Yes

More Colours

No

### Product Dimensions

![](https://cdn.shopify.com/s/files/1/1029/2396/0650/files/mi_fires_tinderbox_medium_wood_burning_multifuel_ecodesign_stove_dimensions.jpg?v=1787904337)

Overall Width

420mm

Overall Height

614mm

Overall Depth

334mm

Width to Centre of Top Flue (E)

210mm

### 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:** 743.05 GBP - 839.05 GBP
- **Vendor:** Mi Fires
- **Type:** wood stove

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| No | 743.05 GBP | In stock |
| Yes | 839.05 GBP | In stock |

## Images

- MI Fires Tinderbox Medium Wood Burning / Multifuel Ecodesign Stove
- MI Fires Tinderbox Medium Wood Burning / Multifuel Ecodesign Stove
- MI Fires Tinderbox Medium Wood Burning / Multifuel Ecodesign Stove
- MI Fires Tinderbox Medium Wood Burning / Multifuel Ecodesign Stove

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> Source: [Pro-Line Direct](https://prolinedirect.co.uk/products/tinderbox-medium-wood-burning-multifuel-ecodesign-stove)
> Updated: 2026-09-07