Onyx Athos 5 Wide

£1,995.00

Classic multi-fuel stove design with refined detailing, combining heritage styling with modern, high-efficiency performance

5kW heat output with up to 79.5% efficiency, featuring Cleanburn and Airwash technology for clear flame views

Showroom exclusive model, available from our Winkleigh showroom

Optional Extras:

Outside Air Kit (928-244) – £185.00

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SKU: ON728061 Categories: , , Brand:

Description

Onyx Athos 5 Wide Fixed Grate Multi-Fuel Stove

Timeless Warmth, Classic Elegance

A refined expression of traditional stove design, the Onyx Athos 5 Wide multi-fuel stove combines classic proportions with modern heating performance. Drawing inspiration from heritage cast iron stoves, it delivers timeless visual appeal while incorporating advanced engineering to meet the demands of contemporary living.

Designed for versatility as well as style, the Athos 5 Wide allows for the burning of wood and occasional use of smokeless fuel, thanks to its fixed grate design. As a result, it offers flexibility for homeowners seeking both the character of a real wood fire and the practical advantages of a multi-fuel appliance.

Constructed from durable cast iron and heavy-gauge steel, the Athos 5 Wide features an elegantly widened firebox that enhances flame visuals and heat distribution. In addition, refined details such as the black knurled handle with champagne-finished ends reinforce its premium, traditional character, making it a striking focal point in both classic and modern interiors.

Delivering a nominal heat output of 5kW, the Athos 5 Wide is ideally suited to small and medium-sized rooms. Furthermore, with efficiency of up to 79.5%, Cleanburn and Airwash systems, and DEFRA Smoke Control Area exemption, it provides powerful, environmentally responsible warmth with a consistently clear view of the fire.

Ecodesign compliant and compatible with an external air supply, the Athos 5 Wide is well suited to modern, well-insulated homes. Its convector heat system ensures efficient warmth circulation, while 12mm hearth compatibility allows for flexible installation options.

Showroom Exclisive Model

This showroom-exclusive model is available to purchase from our Winkleigh showroom, where you can experience the proportions, detailing and flame picture of both the Athos and Olympus range in person.



Key Features:

  • Nominal heat output: 5kW
  • Range: 2.5kW – 7kW
  • Up to 79.5% efficiency
  • A energy rated
  • Multi-fuel stove
  • Cleanburn & Airwash systems
  • DEFRA Smoke Control Area exempt
  • Ecodesign compliant
  • Convector heat system for enhanced warmth
  • External air supply compatible
  • 12mm hearth compatible
  • Classic, heritage-inspired design
  • Cast iron and heavy-gauge steel construction

Visit our Winkleigh showroom to discover the Onyx Athos 5 Wide and speak with our team about whether this elegant stove is the perfect centrepiece for your home.

To view the complete range of Onyx stoves, please click here. You can also browse more wood and multifuel stoves from the Stovax Group here.

For more information on the Onyx Athos range of stoves, please visit the manufacturer’s website here.

Additional information

Fuel Type

Output

Materials

Dimensions

Height: 641mm
Width: 575mm
Depth: 370mm

Flue Outlet

Maximum log length

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Onyx Athos 5 Wide and Olympus 5 Wide Multi-Fuel Stoves - Energy Label

Installation of domestic solid fuel, oil or gas appliances must be certified by a competent engineer. A HETAS, OFTEC or GAS SAFE Engineer is recommended or equivalent governing body. Building Regulations approval is also possible when work is carried out by a competent person.

Click here to find out more about our Installation Service, available for customers located in the South West.

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