Call our sales team on:0161 654 1610
FREE mainland UK delivery*
on each and every order


  • OVER 17 YEARS trusted
    selling fires & fireplaces online
  • FREE mainland UK delivery*
    on each and every order
  • Our 14 DAYS returns policy
    as standard on all orders
  • 0% FINANCE available
    on a wide range of products
  • Manufacturer's WARRANTY
    on all products as standard
Onyx Avanti 65 Conventional Flue Gas Fire
Onyx Avanti 65 Conventional Flue Gas Fire
Onyx Avanti 65 Conventional Flue Gas Fire
Onyx Avanti 65 Conventional Flue Gas Fire
Onyx Avanti 65 Conventional Flue Gas Fire
Onyx Avanti 65 Conventional Flue Gas Fire
Onyx Avanti 65 Conventional Flue Gas Fire

Onyx Avanti 65 Conventional Flue Gas Fire

Designed and engineered in Britain, the spectacular Avanti 65 gas fire from Onyx is a conventional flue model designed for installations into a brick chimney or 5" pre-fabricated flue. Incredible flame visuals with mesmerising flames dancing around an authentic log effect fuel bed with superb heating and efficiency performance too!

£2,945.00(Inc. 20% VAT)+ FREE mainland UK delivery
Visit our showroom

This item is only available from our showroom. Please call our team for more information.

Flames Flash Sale

At a glance...

Freestanding Stove
Heat Output
4.1kW to 5kW
Flue Compatibility
Class 1 or Class 2
Product Information

Onyx Live 3 Stove 5 Year WarrantyThe Avanti 65 is the smaller model in Onyx's gorgeous range of premium gas fires. A conventional flue, glass-fronted gas fire designed for installation into a chimney or 5" pre-fabricated flue, you can enjoy a truly amazing flame which is almost indistinguishable from a real wood burning fire but boasting the convenience or gas.

With many ergonomic features, Avanti Gas fires are designed for an optimised installation and servicing experience. These conventional flue fires are available as natural gas and LPG models and come in two sizes, the Avanti 65 and the larger 85.

The non-reflective glass front panel provides a perfect view of the flames dancing around the fires hand-painted, split oak log-effect whilst also preventing heat from the room being lost up an open chimney. Instant on/off control using the Avanti 65's advanced remote control allowing you to enjoy heat up to an impressive 4.5kW!

This designer gas fire can be combined within a fireplace with a custom back panel opening to create a unique frameless feature without a outer frame. Alternatively, the Onyx Avanti 65 gas fire can be supplied with a Edge+ trim for a minimalist 'hole-in-the-wall' feature where the flames take centre stage or with the larger Expression fascia which frames the fire beautifully!

The Onyx Avanti Gas fire range is designed with elegance in mind. With their sleek exteriors, these luxurious inset feature fires complement all manner of contemporary interior styles, creating a breathtaking centrepiece.

These outstanding conventional flue fires are available as natural gas and LPG models and come in two sizes. 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+. The Avanti Gas burner system creates a glowing ember-effect bed and wrap-around, rolling flames placed in thoughtful points around the log-effects, mirroring a traditional woodburning fire.

This is enhanced by our alluring EchoFlame™ Black Glass Lining, a reflective backdrop creating mesmerising layered flame visuals. Combining these features with an ultra-realistic, handpainted Split Oak log-effect, these premium fires drive at picture-perfect quality.

Onyx Liv 3 Remote ControlComplete 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. experience the exceptional.

As part of the Stovax Heating Group, all Onyx stoves and fires are born in their 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.

Onyx Avanti 65 Conventional Flue Gas Fire Features

  • Heat output: Up to 4.5kW heat output
  • High Efficiency: 78.4%
  • Energy Efficiency Class: D
  • Fully Sequential Thermostatic Remote Control
  • EchoFlame™ Black Glass Lining
  • Hand-painted Split Oak Log-effect
  • Choice of Frame Options
  • Top and Rear Flue Exit
  • Natural Gas and LPG Models


Download Instructions
(Manufacturers instructions are offered as a guide only and may not always be the latest version)


Key Features

Key features of the Onyx Avanti 65 Conventional Flue Gas Fire can be found below.

Fuel Natural Gas or LPG
Heat Output 4.2kW - 4.5kW
Efficiency 78.4%
Flue Outlet Top or Rear
Colour/Finish Black
Fuel Effect Logs
Control  Multi-Functional Remote Control
Warranty 5 Years (extended warranty)

The dimensions (width, height, depth) of the Onyx Avanti 65 Conventional Flue Gas Fire are listed here.

Oynx Avanti 65 Conventional Flue Gas Fire Dimensions


Please note: Due to rising freight charges, we are now being forced to charge extra for delivery to certain Scottish postcodes.

Due to the size and weight of this model, the Onyx Avanti 65 Conventional Flue Gas Fire will be delivered to you on a palletised delivery service. All pallet deliveries are kerbside/front door delivery only, so please arrange adequate means to take your order into your home. Under normal circumstances this may take 2 people.

Current delivery times for the Avanti 65 is approximately 7 days however, this is dependant on stock levels at time of placing an order. Once an order is placed, we will contact you to advise if there is likely to be any delays on the estimated delivery time.

Returns information

We understand that from time to time some of our customers may change their mind or simply not be pleased with their chosen products once delivered and/or installed. Our returns policy should hopefully help with the process of returning your order in this instance. Please feel free to contact us should you have any further queries.

0% finance available on a wide selection of products
Shop now, pay later, with Klarna!
Manufacturer's guarantee on every product
Customer Reviews

Be the first to Write a Review for this item!