Supreme MK III

Powerful wood-fired cooking, heating, and hot water – one stove, complete home solution.

Supreme MK III

The Thermalux Supreme Mk III is a high quality, two oven, slow-combustion wood stove with the ability to cook, heat your domestic hot water and provide hydronic heating for the home.

  • Cooking
  • Hot Water
  • Hydronic Heating
Brand:
Thermalux
Energy Source:
Wood
Unit Dimensions:
810 x 835 x 670 (H×W×D mm)
Unit Weight:
290 kg
Flue Diameter:
150 (mm)
Oven Dimensions:
360 x 350 x 500 (H×W×D mm)
Warming Oven Dim:
170 x 350 x 500 (H×W×D mm)
Firebox Dimensions:
320 x 260 x 430 (H×W×D mm)

Available Colours

Pioneer Collection
Heritage Collection
Contemporary Collection
Pastel Collection
Description
The Thermalux Supreme Mk III is a wood-fired stove designed for serious cooking, long-term durability and optional hydronic heating. With its generous cast iron hotplate, dual ovens and robust welded construction, it is well suited to homes where wood-fired cooking is used regularly and the cooker forms a central part of the kitchen or living space.

As one of the most reliable slow combustion wood stoves in Australia, the Supreme Mk III features a full-size cooking oven and a separate warming oven, suitable for slow cooking or cooking at lower temperatures. The ovens are designed to provide steady, even heat, while the large cast iron hotplate can accommodate multiple saucepans at once. Dual air controls - flue damper and dilution controls - allow the fire, hotplate and oven temperatures to be managed during operation.

The Supreme Mk III, part of our line of Thermalux wood stoves, is available as a dry unit, or with optional boiler configurations for domestic hot water, hydronic heating, or both. Boiler options include 5kW, 8kW and 20kW outputs, with the Supreme CD offering the highest boiler output for larger hydronic heating systems.

Supplied accessories: 1x Large hotplate lifter, 2x Wire racks, 1x Stainless oven tray, 1x Ash scraper, 1x Spindle turner/ashpan tool, 1x Pair of fire gloves.
Customisation: 75mm or 90mm base height increase, splashback, side heat shields, glass oven door option, gloss upgrade to powder-coated doors and splashback, and mirror-image configuration may be available at additional cost.

The Supreme Mk III hydronic heating unit comes standard with a Metallic Black cooktop. The remainder of the unit is available in the Pioneer colour range, including Metallic Black, Charcoal, Metallic Blue, Golden Fire Brown, Moss Green, Mauve, Mojave Red* and Surf Sand*.
Optional powder-coated finishes* for the oven and firebox doors, as well as the splashback and base cabinet doors.
*Additional cost applies.
Hydronic & Hot Water Options
Optional 5kW Boiler
5 kW • Domestic Hot Water
Stainless Steel construction. Can be retrofitted. Suitable for domestic hot water applications and can used in conjunction with WISELIVING Stainless Steel and Copper Tanks.
Optional 8kW Boiler
8 kW • Domestic Hot Water + Hydronic Heating
Stainless Steel construction. Can be retrofitted. Suitable for domestic hot water applications and can used in conjunction with WISELIVING Stainless Steel and Copper Tanks.
Optional 20kW CD Boiler
20 kW • Domestic Hot Water + Hydronic Heating
Mild Steel construction. Built in to unit at time of manufacture. Suitable for domestic hot water and hydronic heating applications. Can used in conjunction with WISELIVING Stainless Steel and Copper Tanks.
Clearances to Combustible Materials
Rear Clearance
75 mm
Oven Side Clearance (Below Hotplate)
100 mm
Firebox Side Clearance (Below Hotplate)
50 mm
Hearth Extension (Front)
300 mm
Oven Side Clearance (Above Hotplate)
700 mm
Firebox Side Clearance (Above Hotplate)
600 mm
Overhead Clearance (Baulkhead)
900 mm
Application & Use
Installation Type
Freestanding
Location
Indoor
Suitable Applications
Suitable for medium to large homes, the Thermalux Supreme Mk III is well suited to kitchens and open-plan living areas where wood-fired cooking, space heating and long-term daily use are desired. Its large hotplate and dual ovens make it particularly suitable for family homes, rural properties, off-grid homes and households that regularly cook with wood. Optional boiler configurations also make it suitable for domestic hot water and hydronic heating applications, including larger whole-home heating setups.
Compliance & Warranty
Installation Compliance
Manufacturer’s Installation Instructions and in Accordance with local regulations, municipal building codes and current AS/NZS 2918:2018, AS/NZ 3500.4:2025
Warranty
  • Dry Unit — 10 Years Manufacturers Warranty
  • Boiler Unit — 5 Years Manufacturers Warranty

* Specifications may vary by configuration. Refer to AUS/NZ Standards for further information.

Up to 10 Years Manufacturers Warranty
100% Australian Owned & Made
Guaranteed Spare Parts Availability

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Pioneer Collection
Heritage Collection
Contemporary Collection
Pastel Collection
Supreme MK III AR QR code

Frequently Asked Questions

Will the unit heat my space?

The Supreme Mk III is primarily designed as a wood-fired slow combustion cooking stove, not as a dedicated radiant space heater. Its insulated construction helps retain heat within the stove for cooking performance, while the hotplate covers help keep heat in the body of the unit when the hotplate is not in use.

As the Supreme Mk III is a fully metal appliance, it will still produce some radiant warmth into the surrounding space. However, if your main priority is a wood-fired cooker that also provides stronger space heating and optional hot water, the Thermalux Gourmet Cooker may be a more suitable option.

How do I control the temperature?

The stove temperature is managed through the amount of fire in the firebox, and through use of the dual air controls which are located on the ashpan and firebox doors, as well as the damper and dilution controls.
These allow you to adjust the fire, hotplate and oven temperatures during operation. For detailed operating instructions of this Thermalux wood stove, please refer to the user manual and installation guide.

How long will it last?

The Supreme Mk III is manufactured using cast iron, heavy-gauge steel, mild steel and stainless steel components. Longevity is dependent on correct operation, regular cleaning and proper maintenance. If well maintained, this slow combustion wood stove is designed to provide reliable service for many years.

What if the firebricks crack?

Small cracks in the refractory firebricks can usually be repaired using refractory cement. Replacement firebricks and refractory cement are also available through your local dealer or by contacting WISELIVING.

What fuel can I burn in the firebox?

As a Thermalux wood stove, the Supreme Mk III is designed to burn dry, seasoned hardwood. Other solid fuels, including coal, should only be used where specifically permitted in the user manual and by local regulations. Wet, treated or unsuitable fuels should not be used, as they can reduce performance, increase creosote build-up and affect the longevity of the unit.

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