Mi Fires

Mi Fires Wood Burning & Multi-Fuel Stoves

Mi Fires offers a broad collection of modern wood-burning and multi-fuel stoves designed around the outputs and fireplace sizes commonly required in UK homes.

The brand is particularly strong for customers looking for a well-specified stove at a competitive price. Many models sit close to the popular 5kW nominal output, while different widths, heights, fuel types and base configurations make it possible to choose the proportions that best suit the fireplace without automatically increasing the heat output.

Bonfire supplies Mi Fires online with professional survey, chimney and installation services also available.

Why Consider a Mi Fires Stove?

Mi Fires concentrates on practical stove features rather than unnecessary complexity. Depending on the model, the range includes:

• Wood-burning and multi-fuel options
• Outputs around the popular 4.9–5kW level
• Ecodesign-compliant appliances
• DEFRA-exempt models for Smoke Control Areas
• Large ceramic-glass viewing windows
• Airwash systems to help keep the glass clear
• Primary, secondary and tertiary combustion air
• Steel bodies with cast-iron doors on selected models
• Cast-iron stove options
• 12mm hearth suitability on selected appliances
• Top and rear flue connections on selected models

Mi Fires Tinderbox Range

The Tinderbox collection is one of the most extensive families within the current Mi Fires range.

Rather than offering one fixed stove body, Tinderbox is available in several formats while keeping heat output close to 5kW.

The important point is that a physically larger stove does not necessarily mean a significantly higher heat output. Current Tinderbox Small, Medium and Large models remain around the 4.9–5kW level.

This gives customers greater freedom to choose a stove that looks correctly proportioned within the fireplace without overheating the room.

Wood Burning or Multi-Fuel Tinderbox?

Several Tinderbox sizes are available as either dedicated wood burners or multi-fuel models.

A wood-burning stove is designed specifically around seasoned logs and is generally the straightforward option where wood will be the only fuel used.

A multi-fuel stove incorporates the components required to burn suitable authorised smokeless fuels as well as wood, subject to the manufacturer’s instructions.

For example, Bonfire currently lists both wood-burning and multi-fuel versions of the Tinderbox Small, Medium and Large.

Mi Fires Skiddaw, Grisedale, Derwent & Loughrigg

Mi Fires also offers more conventional freestanding designs outside the Tinderbox family.

The Skiddaw is a compact approximately 5kW wood burner with a portrait-style flame view, making it useful where width is restricted.

The Grisedale uses wider proportions and a large viewing window while retaining an approximately 5kW output.

Derwent models include multi-fuel capability, providing another option for customers who want fuel flexibility rather than a dedicated wood-only appliance.

The different body shapes mean these stoves can suit very different fireplace openings despite occupying a similar nominal-output category.

Steel Body or Cast-Iron Stove?

Many Mi Fires models use a combination of a steel stove body and cast-iron door.

Steel allows a clean, relatively simple stove body to be manufactured efficiently, while cast iron provides a substantial heat-resistant door around the viewing glass.

Mi Fires also offers cast-iron models such as the FirePod, giving customers a different construction option where the heavier appearance and feel of a full cast stove is preferred.

Efficiency & Ecodesign

Current Mi Fires products include appliances achieving efficiencies above 80%, with many carrying an A+ energy rating.

For example, current Tinderbox models listed by Bonfire range from approximately 80% to 85% efficiency depending on size and fuel configuration.

Ecodesign compliance relates to efficiency and emissions requirements, while DEFRA exemption determines whether a particular stove can burn specified fuel in a Smoke Control Area. These are separate certifications and should be checked against the exact model.

Are Mi Fires Stoves DEFRA Exempt?

Many current Mi Fires wood-burning and multi-fuel stoves are DEFRA-exempt, allowing specified fuels to be burned in UK Smoke Control Areas when the appliance is installed and operated in accordance with its exemption.

Always check the individual model rather than assuming every historical Mi Fires appliance carries the same approval.

Choosing the Correct Stove Size

Around 5kW is a common output for UK living rooms, but this does not mean every property requires a 5kW stove.

Heat demand depends on:

• Room volume
• Property age
• Insulation levels
• Amount of glazing
• Ceiling height
• External walls
• Adjoining open-plan spaces

Our stove calculator can provide an initial estimate, but the final output should be confirmed against the property and installation.

Mi Fires Stove Installation

Bonfire can supply your Mi Fires stove on its own or provide a complete stove installation service.

This can include a home survey, stove sizing, hearths, fireplace chambers, chimney assessment, flexible liners, twin-wall chimney systems for properties without an existing chimney, HETAS installation, commissioning and aftercare.

Why Buy Mi Fires from Bonfire?

• 30 Mi Fires products currently available
• Wood-burning and multi-fuel choices
• Compact, wide, tall and log-store stove designs
• Competitive pricing
• Supply-only or complete installation
• Technical chimney and flue advice
• 4,000 sq. ft. showroom near Reading, Berkshire

Mi Fires FAQs

Are Mi Fires stoves good value?

Mi Fires is positioned strongly around competitively priced Ecodesign stoves with useful features such as large viewing windows, airwash systems and modern combustion technology.

What is the difference between Tinderbox Small, Medium and Large?

The main differences are the physical dimensions and proportions. Current versions remain around 4.9–5kW, allowing the stove size to be matched to the fireplace without necessarily increasing heat output.

Does Mi Fires make multi-fuel stoves?

Yes. Selected models, including several Tinderbox variants and the Derwent, are available with multi-fuel capability.

Are Mi Fires stoves DEFRA exempt?

Many current models are DEFRA-exempt for use with specified fuels in Smoke Control Areas. Check the individual stove before ordering.

Can Mi Fires stoves go on a 12mm hearth?

Selected models are suitable for installation on a 12mm hearth where all manufacturer and Building Regulation requirements are satisfied. Check the exact model specification.

Can Bonfire install my Mi Fires stove?

Yes. Bonfire can provide surveys, hearths, fireplace preparation, chimney liners, twin-wall flue systems and professional HETAS installation for suitable projects.