Avanti Gas Fires

Onyx Avanti gas fires combine sleek exteriors with stunningly realistic flames and log effects, with two sizes available for a premium landscape hole-in-the-wall centrepiece. Also available as an electric version.


Choose Avanti, Choose More.

The Onyx Avanti Gas fire collection epitomises luxury with its captivating flames and sleek, contemporary design. Whether you choose the Avanti 65 or the larger Avanti 85, each fire delivers an exceptional statement, with both available in conventional and balanced flue versions. What’s more, complete the aesthetic with a choice of stylish framing options to suit your style.

Where To Buy

Onyx Avanti 65 Gas Edge Plus Frame Darg greay walls with light wood floor and gold ambient lighting tv.Special Promotion

Avanti Gas Fires Features

  • Heat output: Up to 4.7kW (Avanti 65 BF) and 6.1kW (Avanti 85 BF)
  • High Efficiency: Up to 89.1% (Avanti 65 BF) and 91.9% (Avanti 85 BF)
  • Energy Efficiency Class: B (BF) | D (CF)
  • Easy installation into a prepared chamber with Expression frame
  • Two sizes available
  • Natural Gas and LPG Models*
  • Balanced Flue and Conventional Flue options
  • Balanced flue fires are compatible with chimney renovation kit
  • Fully Sequential Thermostatic Remote Control
  • Frameless Edge installation also possible
  • Choice of Edge+ and Expression Frame Options
  • Top and Rear Flue Exit for Conventional Flue
  • EchoFlame™ Black Glass Lining
  • Hand-painted Split Oak Log-effect
  • Top Flue Exit for Balanced Flue
  • Premium non-reflective glass
  • No extra ventilation required in most circumstances†
  • Covered by our 10 Year Extended Warranty
  • *LPG unavailable for Avanti 65 Balanced Flue model
  • † Applicable to conventional flue fires
Onyx Avanti 85 Gas inset fire Edge Plus frame with white walls and white tile floor.Bubble Overlay

EchoFlame™ Black Glass Lining

Onyx Avanti Gas fires all exhibit our alluring EchoFlame Black Glass Lining, which offers a reflective backdrop for mesmerising layered flame visuals. Combining the mystique of this feature with an ultra-realistic, hand-painted oak log-effect, these premium fires drive at picture-perfect quality.

Onyx Avanti gas fire closeup with echo flame technologySpecial Promotion

Choice of Sizing and Frame Options

What’s more, both the Avanti 65 and the larger 85 come with the added option of a framed installation. Make a truly exceptional statement with the bold Expression frame or opt for effortless sophistication with the minimalist Edge+.

Frame: Dimensions:
Avanti 65 Edge+ 787mm wide x 419mm height
Avanti 65 Expression 984.6mm wide x 616mm height
Avanti 85 Edge+ 987mm wide x 419mm height
Avanti 85 Expression 1184.6mm wide x 616mm height

Where To Buy

Onyx Avanti 85 Gas with edge plus frame grey walls and light wood floor, granite dark stove facade

Complete Control

All Onyx Avanti Gas Fires feature a compact, fully integrated control system, putting ignition, flame adjustment, heat output and extinguishing right into the palm of your hand. The included remote handset also offers thermostatic control, so your Avanti can keep the room at the temperature you desire.

Onyx Eclipse 60HL gas fire remote.

Designed and engineered in Britain.

As part of the Stovax Heating Group, all Onyx stoves and fires are born in our state-of–the-art research and development laboratories. Every Onyx Avanti incorporates industry leading technology and design, and these premium gas fires are the culmination of over 40 years of experience designing and crafting best-in-class heating products. By choosing the Onyx Avanti, you can be sure you’re getting a premium quality gas fire that’s backed up by a network of retailers across the UK.

Where To Buy

Onyx Avanti 65 Gas inset fire Expression Frame brick and white walls with light wood floor.

Technical & Spares


The Onyx Customer Showcase

WIN the cost of your product back!

We’d love to hear about your Onyx stove or fire installation. Every published testimonial will be entered into a draw to win the cost of your product back.

Onyx Customer Showcase