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Dimplex | Vapor Fireplace | CDFI500-PRO-RGB

CDFI500-PRO-RGB

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Dimplex Opti-Myst 500 20-Inch Water Vapor Fireplace Cassette

Q: How does the Dimplex Opti-myst 500 create flames?

The Dimplex Opti-myst 500 uses LED light and fine mist / water vapor to create a patented 3D flame and smoke effect. It does not use real combustion. Note: These cassettes should not be installed where drafts, vents, ceiling fans, or strong air currents interfere with the flame effect.

Q: Does it need venting or gas lines?

No. Both versions are non-venting electric water vapor cassettes, so they do not require traditional fireplace venting or gas lines.

Q: Does it produce heat?

By default, the cassette operates as a flame-only water vapor fireplace. Optional heater accessory may be installed above the cassette for supplemental heat in some setups. Modern Blaze also lists an optional heater accessory on the product page.

Q: How long does the flame last?

On the Dimplex Opti-myst 500 cassette , a full water tank provides up to 8 hours of continuous flame effect before refilling is needed. If you add the optional plumbed water supply kit, the cassette can run continuously without manual refills.

$2,299.00 $2,988.70

Realistic 3D flames created with water vapor
Build custom-length fireplaces with multiple cassettes
No venting or gas lines required
Refillable water tank or optional plumbing kit
Crackling sound effect for added realism
Multicolor flame and app control on the newer RGB version

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Model

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Photo Gallery

Dimplex Opti-Myst 500 Custom Fireplace in Dining Area

Dimplex Opti-Myst 500 Custom Fireplace in Living Area

Dimplex Opti-Myst Vapor Fireplace Flame Themes

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Dimplex CDFI500-PRO-RGB Video

Description

The Dimplex Opti-myst 500 Built-In Water Vapor Fireplace Cassette is a modular electric vapor fireplace cassette designed for custom fireplace projects where design flexibility matters as much as flame realism. Available on this page under model numbers CDFI500-PRO and CDFI500-PRO-RGB, it uses Dimplex Optimyst technology to create a lifelike 3D flame and smoke effect from light and fine mist, without gas, venting, or real combustion, as well as the crackling sound of a wood fire for added realism.

This 20-inch cassette is made for projects that need more freedom than a traditional fireplace can offer. Use one unit for a compact feature or combine multiple cassettes in series to create a longer linear installation. The included media tray lets you customize the finished look with approved decorative media, and an optional plumbing kit can be added for a continuous water supply.

Who is this for?

The Dimplex Opti-myst 500 is ideal for homeowners, designers, builders, and commercial buyers who want to create a custom fireplace feature without the constraints of gas lines, venting, or hot glass. It is especially well-suited for modern built-ins, divider walls, see-through concepts, hospitality spaces, and one-of-a-kind linear fireplace designs where flexibility, safety, and flame presentation matter most.

The RGB version is a stronger fit for buyers who want more control over flame color and app-based customization, while the standard version is a strong choice for those who simply want the classic Optimyst flame effect in a modular cassette format.

Why it stands out

Unlike a fixed fireplace insert, the Opti-myst 500 cassette is built for custom applications. Multiple units can be connected together in series, making it possible to create dramatic fireplace lengths and layouts that are difficult to achieve with traditional fireplaces. Both versions are non-venting and operate flame-only by default, with an optional heater accessory available separately for supplemental warmth in select installations.

The newer CDFI500-PRO-RGB version adds expanded control and personalization, including multiple preset flame colors, custom color capability through the Dimplex Flame Connect app, and adjustable flame width and pattern using included spacers and slots. Both versions offer cool-touch operation and are intended for indoor residential or commercial use.

Specifications

Installation

Indoor, 3-Sided, Insert, Built-in, 2-Sided, Drop-in
Certifications

UL Listed
Warranty

2 Years
Manuals

Download
Download
Download
Download
Download
Download

Features

Unbelievably Realistic Flames: Water vapor and LED light combine to create a true-to-life, smoke-like flame effect.
Limitless Design Flexibility: Install as a single unit or connect multiple cassettes for a custom-length feature.
Cool to the Touch: No heat output—safe for families, pets, and commercial spaces.
Smart Controls & RGB Lighting: Adjust flame color and intensity to match your mood or décor. (CDFI500-PRO-RGB Only)
5 Flame Colors: natural orange, blue, violet, red, and aquamarine (CDFI500-PRO-RGB) or Realistic natural colored flame (CDFI500-PRO)
Multiple 20" (50.8 cm) cassettes can be combined in series to achieve the desired length for dramatic linear installations, which is impossible to do with gas fires
Opti-Myst technology creates an incredible, life-like 3-dimensional flame effect of fire and smoke.
Designed to be directly wired to a 120-volt circuit for a seamless look or get the optional plug-kit if you prefer not to hardwire it
Extremely cost-efficient as you only need to fill the tank with water, only costing pennies an hour
An Easy-fill water tank offers 8 hours of continuous operation before it needs to be refilled
A Plumbing Connection Kit for each cassette if connecting multiple cassettes
Includes a flat plate to support custom media
The cassette can also be used with any accessory that doesn't block the vapor from coming out, like glass pieces, rocks, decorative logs, etc.
Has the crackle of a real wood fire for a more soothing atmosphere
Low Maintenance, LED lights never need to be replaced
The green alternative. No harmful particulates or emissions and 100% efficient.
Includes a convenient remote control to easily adjust the settings of multiple cassettes
An optional heater can be installed above the cassette to provide supplemental heat to up to 400 sq. ft.
Optional Plumbing Kit provides continuous water supply complete with overflow safety sensor, automatically shutting off water to prevent leaks.
120 V
230 Watts
1.91 Amps
785 BTUs
Dimensions: 9 1⁄2"H x 20" W x 12"D
Weight: 35 lbs

What's In The Box

Opti-myst® 500 Water Vapor Fireplace - 1 pc.
Remote Control - 1 pc.
Media Tray - 1 pc.
User's Manual - 1 pc.

Dimplex Opti-Myst 500 20-Inch Water Vapor Fireplace Cassette FAQ's

What is the difference between CDFI500-PRO and CDFI500-PRO-RGB?

Both models use Dimplex Optimyst water vapor technology to create realistic 3D flames and both include a crackling sound effect. The main difference is flame customization and controls. The newer CDFI500-PRO-RGB adds multicolor flame options and app-based control through the Dimplex Flame Connect app. The original CDFI500-PRO delivers the classic Optimyst water vapor flame effect without those RGB-specific customization features.

How does the Dimplex Opti-myst 500 create flames?

The Dimplex Opti-myst 500 uses LED light and fine mist / water vapor to create a patented 3D flame and smoke effect. It does not use real combustion. Note: These cassettes should not be installed where drafts, vents, ceiling fans, or strong air currents interfere with the flame effect.

Does it need venting or gas lines?

No. Both versions are non-venting electric water vapor cassettes, so they do not require traditional fireplace venting or gas lines.

How many cassettes can be combined?

Up to 10 Dimplex Opti-myst 500 RGB cassettes can be linked together in one installation.

Does it produce heat?

By default, the cassette operates as a flame-only water vapor fireplace. Optional heater accessory may be installed above the cassette for supplemental heat in some setups. Modern Blaze also lists an optional heater accessory on the product page.

How long does the flame last?

On the Dimplex Opti-myst 500 cassette, a full water tank provides up to 8 hours of continuous flame effect before refilling is needed. If you add the optional plumbed water supply kit, the cassette can run continuously without manual refills.