Are you looking for a sleek, modern gas fire? The Gazco Onyx Avanti 65 may be the perfect choice. Designed to be installed into a variety of flue options, this product has a wide range when it comes to installation. Sold in 2 sizes, 65 and 85, the Avanti Gas fire is taking the market by storm with its amazing flame effect that is unmissable when you walk into the room. These conventional flue fires are also available as natural gas and LPG models.

The compact design of the Avanti houses a comprehensive control system, enabling easy ignition, flame adjustment, heat output regulation, and extinguishing. The included remote handset provides thermostatic control for maintaining your desired room temperature and shutting off the flames once the temperature is reached. Using EchoFlame™ Black Glass Lining the Avanti provides a stunning view of dancing flames and the hand-painted split oak log effect inside the fire.

You can also Enhance your fireplace with the option of different frames for the product. For a minimalist design use the Onyx Avanti 65 gas fire and Edge+ trim or for something more bold the Expression fascia beautifully frames the fire and its flame effect, adding a touch of elegance to your space.

Every Onyx Avanti incorporates industry leading technology and design; 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


  • Heat output: Up to 4.5kW
  • Energy Efficiency Class: D
  • Hand-painted Split Oak Log-effect
  • EchoFlame™ Black Glass Lining
  • High Efficiency: 78.4%
  • Natural Gas and LPG Models
  • Thermostatic Eco remote control
  • Choice of Frame Options
  • Top and Rear Flue Exit
Warranty 5 Year

Additional Specifications

Product icon
Estimated 7-10 Day Delivery
Product Image icon
Warranty 5 Year
Smart Home Enabled
Fuel Type
Natural Gas, LPG (Propane)
DEFRA Approved
Chimney Type
Brick Chimney (Class 1)
829mm, 648mm Glass
569mm, 380mm Glass
331mm, 314mm Inset
Efficiency (%)
Built From
Contemporary, Timeless
Cable Length
Heat Output
4kW, 5kW
Parts Warranty
5 Year
5 Year
Fuel Bed
Logs, Woodland Logs

Heat Output Estimator

Unsure what size of Stove or Fire you need?

Try our handy Kilowatt Calculator to give you a rough idea what size of appliance you will need for your room.



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Showroom Info

We are moving to an exciting new, larger showroom in Huddersfield, we cannot wait to display all our fantastic Stoves, Fires, Cookers, BBQs, Pizz Ovens, Range Cookers and Garden furniture, there will be something for everyone.
Keep checking this page for more news on our move.

Delivery & Returns

Delivery Information

Free Next Day or Day of Choice Delivery:
When you purchase an in-stock product before midday (available to most of the UK Mainland) we will deliver the item(s) for FREE on all baskets that have a value of over £100. Any order under £100 is subject to a £6.95 shipping fee. Deliveries take place Monday to Friday however we can deliver on Saturday and Sunday for an additional cost.
Free Click & Collect:
If your item is in stock, you can order it online to collect from one of our showrooms or warehouses. This could mean you'll get your product even quicker than we can deliver it to you. When ordering your goods please state in your order comments which showroom or warehouse you would like to collect from and on which day. Feel free to contact us for collection information and locations of our warehouses.
Delivery Information:
Your goods will usually be delivered on a 10-tonne vehicle (about the size of a bin wagon). If there is likely to be a problem with access please contact us in advance of placing your order. Examples of areas we cannot deliver to are long or gravelled drives, areas inside walled cities with height restrictions, narrow lanes, grassed lawns, steep drives, narrow gateways or up/down steps. We may be able to make alternative delivery arrangements if you contact us in advance.
With our standard delivery service, there will be one driver, we suggest you have at least one other person with you to assist. The driver will move the goods to the nearest accessible wheel point depending on access. Unfortunately due to insurance and health and safety issues, the driver is not permitted to move the goods inside your property but can wheel them into a garage. 
We advise that you check the goods while the driver is still there. The driver is obliged to wait for up to 10 minutes, (for palletised goods only) whilst you unpack and check the goods. If the driver refuses to wait then please mark the goods as damaged on the delivery note, so you are covered for all eventualities. If you have checked the goods and they are found to be damaged, please mark this clearly on the delivery note and contact our offices straight away.
If you are unavailable when your goods are delivered on your pre-booked delivery date, then re-delivery charges will apply. If you are unavailable when smaller packaged goods (eg. Stove Glass) are delivered, the courier company will leave a note, explaining how to re-arrange delivery for a more convenient time.


Gazco Onyx Avanti 65 Conventional Flue Gas Fire

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