A new benchmark in electric fire realism, designed to bring the art of illusion into your home.

The Onyx Mirage 40i Electric Fire combines advanced flame technology, intelligent heating, and elegant styling in a slimline design made for modern living. Created by Onyx, part of the Stovax Heating Group, the Mirage 40i captures the ambience of a real wood-burning fire in a highly realistic electric format — with zero direct emissions.

Using Onyx’s patented Mirage Virtual Flame System, the fire recreates the natural movement, rhythm, and glow of real flames. Captured visuals from an authentic wood-burning fire are layered across hand-painted log effects and a detailed ember bed, creating an immersive fireside experience with exceptional depth and realism.

With its ultra-slim 71mm depth and compatibility with standard 16-inch fireplace openings, the Mirage 40i is ideal for upgrading an existing fireplace or creating a stylish new focal point where space is limited.

Award-Winning Design

The Onyx Mirage 40i reflects over 40 years of design and engineering expertise from the Stovax Heating Group and was selected as a Gold Winner at the 2025 London Design Awards in the Product Design category.

Realistic Flame Experience

The Mirage 40i is designed to mirror the natural lifecycle of a real fire. Choose from five flame presets, including high, medium, and low burn settings, glowing embers, and the contemporary Aurora flame effect.

With 16 log and ember bed colour options, adjustable brightness, and pulsing speed settings, you can personalise the look and feel of the fire to suit your room, mood, or season.

Patented Mirage Virtual Flame System

At the heart of the Mirage 40i is Onyx’s patented flame technology. Real captured visuals of a wood-burning fire move naturally across the exposed log effects, creating a convincing flame illusion that goes far beyond a conventional electric fire.

The hand-painted logs are precisely modelled to complement the flame visuals, while a layered ember bed made with lifelike glass and vermiculite media adds further texture and depth.

Slimline Design for Easy Installation

The Mirage 40i has been designed with flexibility in mind. Its shallow engine depth makes it suitable for many standard fireplace openings, making it a practical option for both renovations and new installations.

Fire engine size / aperture required:
Depth: 71mm
Width: 405mm
Height: 555mm

Styling Options

The Mirage 40i can be tailored to suit a wide range of interiors, from traditional fireplaces to more contemporary settings. A choice of three cast iron styling options is available, with selected decorative façades offered in a range of elegant finishes.

This allows you to create a fireplace look that complements your room while enjoying the convenience and efficiency of electric heating.

Intelligent Heating & Energy Efficiency

The Onyx Mirage 40i offers up to 2kW of programmable thermostatic heat, making it ideal for zonal heating in living rooms, lounges, bedrooms, and other spaces where responsive warmth is needed.

Energy-saving features include open window detection, thermostatic control, and Deep Sleep Mode, helping to reduce unnecessary energy use while keeping operation simple and efficient.

Enjoy the Flame Effect All Year Round

The flame visuals can be used with or without heat, allowing you to enjoy the atmosphere of a real fire throughout the year. During warmer months, the fan-only mode provides gentle air circulation without activating the heater.

Complete Control

The Mirage 40i can be operated using the supplied remote control or through the intuitive Onyx app. Adjust flame settings, colours, brightness, heat output, and energy-saving features with ease.

App control also allows daily and weekly scheduling, so the fire can be set around your lifestyle and heating routine.

Key Features

• Patented Mirage Virtual Flame System
• Flame visuals captured from a real wood-burning fire
• Five flame presets, including glowing embers and Aurora mode
• 16 log and ember bed colour options
• Adjustable flame brightness and pulsing speed
• Internally lit exposed log effects
• Realistic ember bed with glass and vermiculite media
• Ultra-slim fire engine requiring just 71mm depth
• Designed for standard 16-inch fireplace openings
• Three cast iron styling options available
• Remote control and app control
• Flame effect can be used with or without heat
• Fan-only mode for gentle air circulation
• Up to 2kW programmable thermostatic heating
• Open window detection
• Deep Sleep Mode
• Ecodesign energy-saving features
• Zero direct emissions
• Five-year extended warranty

The Onyx Mirage 40i Electric Fire is a beautifully engineered electric fireplace that combines realistic flame visuals, efficient heating, and refined design. Perfect for those looking to upgrade a traditional fireplace or add a premium electric fire to a modern home.