Onyx Avanti 85 Balanced Flue Inset Gas Fire

£3,645.00 Inc VAT

The Onyx Avanti 85 Balanced Flue Gas Fire combines contemporary style, lifelike realism, and exceptional heating power to create the ultimate focal point for modern homes.

  • 6.1kW maximum heat output
  • Up to 91.9% efficiency
  • Frameless or framed design
  • EchoFlame™ reflective glass lining
  • 10-year extended warranty

Its commanding presence, intelligent controls, and energy-efficient design make it the perfect statement fire for those who demand luxury and performance in equal measure.

Estimated Delivery: 3-5 Working Days
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Onyx Avanti 85 Balanced Flue Inset Gas Fire
Onyx Avanti 85 Balanced Flue Inset Gas Fire
£3,645.00 Inc VAT
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    FREE delivery on orders over £1,000

    • 14 day no-hassle returns
    • Full manufacturer warranty included
    • Family run since 2003
    • Expert installation by our HETAS registered team Learn more →
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    Onyx Avanti 85 Balanced Flue Inset Gas Fire
    Onyx Avanti 85 Balanced Flue Inset Gas Fire
    £3,645.00 Inc VAT

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      Delivery, Click & Collect & Returns Information

      Click & Collect:

      We offer a free Click & Collect service on all products. Select “Click & Collect: Berkshire Showroom (RG7 2PQ)” at checkout to reserve your item.

      If the Add to Basket button is not available, please call 0118 970 1717 or email info@bonfire.co.uk
      to place a Click & Collect order.

      To ensure your item is ready for collection, please contact us in advance to confirm availability, opening times, and collection details.

      View our showroom information


      Delivery Information:

      Our current delivery times are approximately 2-3 working days, depending on stock levels at the time of your order. Once your order is placed, we will contact you to confirm your estimated delivery date and notify you of any potential delays.

      • Delivery costs are calculated at checkout based on your postcode location.
      • Free delivery on orders over £1,000 is available within 100 miles of our showroom (RG7 2PQ).
      • Free delivery is a small van/ sprinter 3 metre (receiver unloads) unless stated otherwise.

      We provide delivery within a 200 mile radius of our Reading, Berkshire showroom. To check if we cover your area, click the link below to learn more about our delivery information. For customers beyond this radius, our products are available for collection only online. Please contact our team for a tailored delivery solution, feel free to contact us at 0118 970 1717 or email us at info@bonfire.co.uk for a prompt, bespoke delivery quote.

      Goods are typically delivered on a small or tail-lift van dependant on your requirements, and if access is restricted (e.g., narrow lanes or steep drives), please contact us before placing your order to discuss alternative arrangements. For standard deliveries, a single driver will deliver the goods to the nearest accessible point. We recommend having at least one other person to assist with unloading.

      The driver can only move goods to the closest accessible area, such as a garage, but due to insurance/ health and safety restrictions, cannot bring items into your home. We advise checking the goods while the driver is still there (up to 15 minutes allowed); if any damage is found, please mark it on the delivery note.

      If you are unavailable on the scheduled delivery date, re-delivery charges may apply, and smaller items may require re-scheduling through the courier.

      Learn more about our delivery information


      Return And Exchange Information:

      We offer a 14 day return policy for customers who change their mind or are not satisfied with their purchase. Returns must be requested within 14 days of receiving your order, and the customer is responsible for return shipping costs.

      Our Non Returnable or Refundable Items Include:

      • All flue systems and chimney components
      • All bespoke and made to order items
      • All unique or one off pieces

      Please order carefully based on your application. Please ask our team any questions if you’re unsure on the product.

      Any damaged items must be reported within 48 hours of delivery to ensure a prompt resolution otherwise we cannot guarantee an exchange or replacement. Please ensure the product is returned in its original condition and packaging for a full refund or exchange.

      re-stocking fee of up to 30% may apply to returned or exchanged items as they will have to go back to the manufacturer. Please note that we are unable to accept returns on flue or chimney systems, as well as products with selectable options, made to order and bespoke items

      Learn more about our return and exchange policy

      The Onyx Avanti 85 Balanced Flue Gas Fire represents the height of innovation, craftsmanship, and modern design within the Avanti collection. Created by the Stovax Heating Group, pioneers with over four decades of expertise in premium heating, the Avanti 85 delivers breathtaking realism, effortless control, and outstanding energy efficiency. Its commanding 85cm landscape design offers a stunning centrepiece for any contemporary home, combining exceptional warmth with exquisite visual appeal.

      A Striking Centrepiece for Modern Interiors

      With its expansive panoramic format, the Avanti 85 transforms any room into a luxurious living space. Designed to be installed as a sleek hole-in-the-wall fire, or paired with a bespoke fireplace surround, it offers remarkable versatility for a range of interiors. Choose between the minimalist Edge+ frame, the bold Expression frame, or opt for a frameless Edge installation for seamless architectural integration. The result is an elegant, modern statement piece that radiates both warmth and sophistication.

      Unrivalled Flame Realism

      At the heart of the Avanti 85 is a state-of-the-art burner system engineered for authenticity. Hand painted split oak logs rest upon a glowing ember bed, producing an immersive, natural flame picture that mimics a true wood burning fire. The addition of EchoFlame™ Black Glass enhances this effect, reflecting and multiplying the flickering flames within the firebox to create a deep, three-dimensional display that captivates from every angle.

      Exceptional Heating Power & Efficiency

      Beyond its beauty, the Avanti 85 excels in performance. With a 6.1kW heat output and an impressive 91.9% efficiency rating, it delivers both luxury and practicality in one remarkable package. This makes it ideal for larger living spaces and open plan areas, ensuring consistent, comfortable warmth while maintaining low running costs. It’s a fire that performs as brilliantly as it looks.

      Effortless Operation & Intelligent Control

      Every Avanti 85 comes equipped with a fully sequential thermostatic remote control, allowing you to manage every function from the comfort of your seat. From automatic ignition and flame height adjustment to room temperature regulation, the remote puts complete control at your fingertips. Its intelligent thermostat ensures consistent comfort, automatically maintaining your preferred temperature with precision.

      Flexible Balanced Flue Installation

      Perfect for homes without a chimney, the Avanti 85 uses a balanced flue system that draws air from outside and safely expels combustion gases. This not only improves efficiency but also enhances installation flexibility. Choose from:

      • Top Exit “Up & Out” kit – ideal for walls facing outdoors.
      • Top Exit Vertical kit – perfect for single storey homes or extensions.
      • Optional Chimney Renovation Kit – allowing installation into an existing masonry chimney.

      This adaptability ensures the Avanti 85 can be beautifully integrated into almost any property layout.

      Designed for Easy Installation & Servicing

      Engineered with precision and practicality, the Avanti 85 simplifies both installation and maintenance. Its compact control system integrates the valve and receiver unit for quicker setup, while the direct frame attachment system allows for cleaner fitting with minimal plasterwork. Ergonomic glass handles provide safe, straightforward access to the non-reflective glass panel, streamlining routine servicing and ensuring lasting performance.

      Built to Endure

      Constructed from premium materials and finished to the highest standards, the Avanti 85 promises enduring quality. The non reflective glass ensures a crystal clear view of the flames, free from unwanted glare. Backed by a 10 year extended warranty (upon registration), it offers complete peace of mind that your investment is protected for years to come.

      Key Features & Benefits

      • Premium 85cm balanced flue gas fire – largest in the Avanti collection
      • Panoramic design for striking visual presence
      • Hand painted split oak logs with glowing ember bed
      • EchoFlame™ Black Glass for amplified realism
      • Up to 6.1kW powerful heat output
      • Exceptional 91.9% energy efficiency
      • Non reflective glass as standard
      • Fully sequential thermostatic remote control
      • Flexible installation with multiple flue kits
      • Simplified maintenance with ergonomic glass access
      • 10 year extended warranty for lasting assurance

      Video:

      Additional information

      Weight 80 kg
      Dimensions 95 × 31.4 × 55.2 cm
      Brand

      Onyx

      Colour

      Black

      Efficiency

      91%

      Energy Rating

      B

      Flue Diameter

      127mm (5")

      Flue Exit

      Top or Rear Exit

      Flue Type

      Balanced Flue

      Fuel Type

      Gas

      Front Style

      Glass Fronted

      Heat Output

      Small (2kW to 4.9kW)

      Material

      Steel

      Placement

      Inset

      Viewable Sides

      1 Sided

      Style

      Contemporary

      Warranty

      5 Years (if registered)

      Downloads

      Installation And User Manual: Onyx-Avanti-65-85-Balanced-Flue-Instruction-Manual (1)

      Servicing Manual For Balanced Flue: Onyx-Avanti-Gas-Balanced-Flue-Installation-Servicing-Flyer (1)

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