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).
If the goods are showing a 48hr delivery, then this is the quickest time we're able to deliver these items. You will be asked to select a delivery date when you're going through the checkout process. The goods will be delivered on this day.
Smaller items such as inset gas fires and electric fires are delivered by a courier. You will be contacted beforehand and a convenient delivery date agreed.
Once your parcel is dispatched, you will receive a text message confirming your delivery date and a tracking link that will keep you updated of your parcel's progress.
This is an all-day ground floor doorstep service. All items must be checked for damage in front of the driver before being signed for. Please contact us immediately in the unlikely event that damage has occurred.
PLEASE NOTE THAT WE STRONGLY ADVISE THAT YOU DO NOT BOOK ANY CONTRACTORS, PLUMBER’S, OR FITTERS UNTIL YOU HAVE RECEIVED YOUR GOODS AS UNEXPECTED DELAYS CAN OCCUR.
PRICE MATCH – CONTACT US IF YOU FIND IT CHEAPER ELSEWHERE
If you find this product cheaper online or in-store please contact us at [email protected] or click the price match button on this page and give us the opportunity to match the price.