Eureka Onyx (Up To 300 m2)

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The Eureka Onyx freestanding unit is a large powerful heater, designed to heat a home of up to 300 sq metres.

The features include a huge bay window, robust firebox with an 8mm baffle plate, along with the stylish appearance of the Eureka range.The new generation "clean burn" Onyx Freestanding woodheaters offer you unsurpassed total home heating.


  • Unique pre-heated primary and secondary combustion air for "total burn".
  • Minimum wall clearance. 100mm from a rear wall and 330mm from a side wall. 50mm from the corners in a corner installation.
  • Maximum heat output and long burn periods per fuel load.
  • Quality three-speed fan, designed for easy access and removal.
  • Optional Gold or Chrome door.
  • Deep ash bed for convenient ash retention.
  • Minimum hearth requirements.
  • Strong welded seam and folded 6mm firebox.
  • Superior baked high temperature paint finish.
  • 5mm heat and shock resistant clear vision door glass.
  • Firebrick lining on the sides and back of the firebox which enhances the combustion efficiency whilst protecting the most vulnerable part of the firebox.
Emissions 1.3g

Efficiency 65%*

Log Length 450mm

This tradition continues with the latest range of woodheaters that conform to the strict Australian emission levels. For many years Eureka Woodheating has been the pre-eminent brand in the Australian market place for woodheating based on quality, strength and prolonged high performance.

Company Profile

AF Gason Pty Ltd, the parent company of Eureka Woodheating is a family owned company spanning 3 generations; the manufacturing plant is located on a 3.2 hectare site at Ararat in Western Victoria and employs in excess of 100 people.

As well as woodheating, Gason is well known for its innovative agricultural farm equipment and diverse manufacturing expertise for a number of well-known Australian companies.

Eureka Woodheating has been a market leader for 30 years



CapacityUp to 300m2

Hearth TypeFull
Minimum Heath Size
W x D x Thickness
1170mm x 1020mm x 4mm
(300mm in front of the heater base)
Rear Wall100mm
Side Wall330mm