The Onyx Athos 5 Wood Burning Stove unites traditional cast iron artistry with the advanced engineering expected from a premium 2025 wood burner. Designed for homeowners who value authentic, heritage-inspired styling but demand exceptional efficiency, clean combustion and stunning flame visuals, the Athos 5 offers a balance of classic presence and modern performance. With its sculpted cast iron door, refined vertical moulding, deep graphite finish and expansive viewing window, it stands as a distinguished centrepiece in both period and contemporary interiors.
The Athos 5 delivers a nominal heat output of 4.8kW with an adjustable range from 2kW to 6kW, providing controllable and comfortable warmth for small to mid-sized rooms. Its 82% efficiency rating and A+ energy classification ensure powerful heat with minimal wood consumption, making it one of the most efficient stoves in its class. Optimised as a dedicated wood burner, it uses refined combustion pathways to deliver long-lasting heat, reduced emissions and an exceptionally clean flame picture.
Cleanburn technology introduces tertiary air into the firebox, re-igniting unburnt gases and particulates for a cleaner burn, while the high-performing Airwash system directs airflow across the glass to maintain a clear, uninterrupted flame view. Fully Ecodesign compliant and DEFRA approved, the Athos 5 provides clean, responsible wood burning whether installed in rural homes or Smoke Control urban zones.
Built with a combination of heavy-gauge steel and cast iron, the stove offers outstanding durability, thermal stability and long-term reliability. The Onyx Convector Heat System draws cool air around the firebox, heats it within the stove body and releases it back into the room through a discreet upper vent, creating rapid, even heat distribution that enhances comfort and reduces warm-up time.
Operation is simplified through a single, intuitive air control that manages secondary and tertiary airflow for precise, user-friendly adjustment. The Athos 5 also supports an external air supply, making it suitable for modern airtight homes and energy-conscious installations. Its 12mm hearth compatibility provides additional installation flexibility, allowing placement in a wider range of contemporary settings.
Backed by the Onyx 10 Year Warranty, the Athos 5 Wood Burning Stove embodies lasting craftsmanship, refined flame clarity and high-performance combustion. It is a premium wood burner designed to elevate both comfort and character in any home.
Features & Benefits
- Heritage-inspired cast iron door: Classic craftsmanship with refined moulding.
- Deep graphite finish: Versatile for traditional or modern interiors.
- Robust steel and cast iron body: Exceptional durability and heat stability.
- Large panoramic window: Immersive, uninterrupted flame view.
- Premium anodised handle: Knurled grip with champagne accents.
- Nominal heat output: 4.8kW: Ideal for small to medium rooms.
- 2–6kW heat range: Adjustable warmth for varied conditions.
- 82% efficiency (A+ rated): High heat with low fuel consumption.
- Convector Heat System: Faster heat-up and even heat distribution.
- Dedicated wood-burning design: Optimised for clean, efficient log combustion.
- Cleanburn system: Re-burns gases for a hotter, cleaner fire.
- Powerful Airwash: Helps keep glass clear throughout the burn.
- Intuitive single air control: Simple, precise flame and heat management.
- Ecodesign approved: Meets the latest environmental standards.
- DEFRA Smoke Control approved: Suitable for urban Smoke Control Zones.
- Ultra-low emissions: Cleaner operation with reduced particulates.
- Installation & Compatibility
- 12mm hearth compatible: Allows flexible placement in modern homes.
- External air supply option: Ideal for airtight or energy-efficient properties.
- 10-year warranty: Long-term reliability and peace of mind.
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