Dimplex 20" Optimyst RGB Cassette

Bring a remarkably realistic fire experience to your space with the Dimplex 20" Optimyst RGB Cassette. Using patented water vapor flame technology, this innovative electric fireplace cassette combines fine mist and RGB LED lighting to create lifelike 3D flames and smoke without combustion, fuel, or venting. Its compact, modular design makes it ideal for custom fireplaces, open-concept installations, see-through features, and residential or commercial spaces.

With five preset flame colors orange, blue, violet, red, and aquamarine plus custom colors through the Dimplex Flame Connect App, you can personalize the atmosphere to suit your space. Multiple 20-inch cassettes can also be connected for longer, custom fireplace designs, while adjustable flame patterns and a customizable ember bed provide even more creative freedom.

Key Features

• Realistic Water Vapor Flames – Patented Optimyst technology combines fine water mist with RGB LED lighting to create an impressive 3D flame and smoke effect.
• Customizable RGB Flame Colors – Choose from five preset colors—orange, blue, violet, red, and aquamarine—or create custom colors using the Flame Connect App.
• Smart App & Remote Control – Adjust flame colors, mist output, effects, and other settings through the Dimplex Flame Connect App or included remote control.
• Modular Fireplace Design – Connect multiple Optimyst cassettes together to create custom-length linear fireplaces and unique installations.
• Flexible Flame Pattern – Included spacers and slots allow you to customize the flame width and pattern for your preferred fireplace design.
• Customizable Ember Bed – Add your preferred decorative media to the included ember tray, or pair the cassette with an optional inner-glow log set.
• Continuous Water Supply Option – Connect the cassette to a main water line using an optional plumbing kit for convenient continuous operation.
• Vent-Free Operation – Powered by water and electricity with no combustion or fuel required, eliminating the need for traditional fireplace venting.

Specifications

Resources

• Optimyst - Handout 2026 (EN)
• Optimyst - HPBE Training Presentation (EN)
• Optimyst Differences - CDFI500-PRO and CDFI500-PRO-RGB (EN)
• Optimyst RGB Cassette - Sell Sheet (EN)