Representing the pinnacle of traditional stove design, the Onyx Athos wood burning and multi-fuel stove range blends the charm of heritage aesthetics with cutting-edge engineering. Built on decades of expertise in solid fuel innovation, Athos stoves deliver powerful performance and enduring style – bringing the comforting glow of real fire into your home with grace and authenticity.


Available as 5 and 5 Wide models – each Athos stove is constructed to deliver exceptional warmth and timeless style.
The Athos 5 is a dedicated wood burning stove offering high-efficiency performance when burning wood, whilst the Athos 5 Wide offers a fixed grate, for occasional burning of smokeless fuels as well as wood.
Athos 5 |
Athos 5 Wide |
|
|---|---|---|
| Nominal Heat Output | 4.8kW | 5kW |
| Heat Output Range | 2kW – 6kW | 2.5kW – 7kW |
| Max Efficiency | 82% | 79.5% |
| Energy Rating | ||
| Flue Outlet (Top and Rear) | 128mm (5″) | 128mm (5″) |
*Nominal heat outputs, efficiencies & efficiency ratings are based on maximum achievable across size variation

Thanks to their large viewing windows, Onyx Athos 5 and 5 Wide stoves both offer a spectacular flame visual, kept clear by powerful Airwash systems, for a captivating centrepiece.


With refined proportions and heritage-inspired detailing, the Onyx Athos embodies the enduring elegance of classic stove design. A robust steel body and cast iron door ensures durability, while its elegant façade adds a touch of timeless sophistication to any space.
Each Athos stove features a distinctive anodised door handle with a tactile black knurled grip, finished top and bottom with champagne ends – subtle touches that enhance the stove’s luxury aesthetic.

Behind the Athos’s charming exterior lies state-of-the-art combustion technology designed for impressive efficiency and control. For enhanced heating performance, the Athos features a convector heat system, which channels warm air between the firebox and the outer walls of the stove. This heated air is then distributed back out into the room through the heat duct above the stove’s door.
Athos 5 stoves feature a single intuitive air control lever to control both secondary and tertiary air, for simple and easy airflow adjustment. Athos 5 Wide stoves have an additional primary air control, giving you responsive control of air from below the grate – ideal for when burning smokeless fuels or to aid ignition of newly added logs.



Engineered with advanced Ecodesign technology, Onyx Athos stoves offer exceptional efficiency while minimising smoke and emissions, generating the maximum amount of heat from your fuel.
Fully DEFRA-exempt, these stunning wood burning and multi-fuel stoves are suitable for use in Smoke Control Areas, providing clean, reliable warmth whether you live in the town or country.


Onyx Athos wood burning and multi-fuel stoves are suitable for installation with a 12mm hearth. This means that a typical constructional hearth may not be needed, giving you more choice when it comes to positioning your stove.


For added convenience, Athos stoves can be installed with an optional external air supply, drawing combustion air directly from outside your home.
