Dimplex Cassette 400 Inset Electric Fire

If you’ve ever wished for a real fire without the hassle — no ash, no sweeping, and definitely no unexpected smoke alarms — the Dimplex Optimyst Cassette 400 is your dream come true.

Using Dimplex’s clever patented water vapour and light technology, this little beauty creates a mesmerising 3D flame and smoke effect that’s so convincing, you’ll want to reach out and warm your hands (but don’t worry — it’s cool to the touch!).

Perfect for bespoke installations, whether you’re upgrading your living room, designing a dramatic room divider, or adding a wow-factor to a commercial space, the Cassette 400 offers endless design possibilities.

Key Features

• Optimyst flame technology – Hyper-realistic flames created with water vapour and light.
• Variable flame intensity – Dial the drama up or down to match your mood.
• Remote & manual controls – Adjust settings with the remote or via the built-in display.
• Easy-fill water bottle – Up to 8–10 hours of stunning flames per fill.
• All-round view – Panoramic visibility of the flame effect from every angle.
• Flexible installation – Ideal for custom builds at home or commercial projects.
• Realistic log effect bed – The glowing log base makes the illusion feel even more authentic.
• Flame-only mode – Perfect if you just want the ambience without the heat.

What We Love

We’re smitten with how real this fire looks — guests often can’t tell it’s electric! It’s hassle-free, endlessly versatile, and makes any room feel instantly warmer and more inviting (without actually turning up the temperature).