Dimplex Opti-Myst 500 Water Vapor 20" Electric Fireplace Cassette

5 reviews

Plug Conversion Kit

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Plug Conversion Kit

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Direct-wire Heater

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Direct-wire Heater

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Plumbing Kit

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Plumbing Kit

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Burning Media

Log Set
Driftwood Log Set
River Rocks
Black Rocks

Estimated Arrival: Between and . (To All Contiguous States)

✔ Same-Day Order Processing
✔ Free Returns
✔ No Restocking Fees
✔ Financing Options Available

Text or call 888-992-1556, start live chat, or email with any questions. Our team is available to serve you 8:00 AM - 11:59 PM ET, 7 days a week.

Dimplex Opti-Myst Water Vapor Electric Fireplace Cassette are available in 20" and 40" sizes.

Picture the perfect fireplace: any length, any location, and any number of sides. Forget about venting, gas lines and hot glass,because they are a thing of the past. Now imagine flames made of water that you can reach out and touch.

Opti‐myst® Pro 500 20" Cassette is ideal for commercial applications. You can connect multiple cassettes to create dramatic linear installations.With multiple installation possibilities, the cassette can be combined in a series to create a focal feature as large as your imagination. Additionally, the incredibly life-like flame effects can be adjusted to create the perfect display for your area. The patented, ultrasonic Opti-Myst technology produces water vapor in which unique lighting patterns reflect off of to create the illusion of an authentic burning flame and smoke effect. Choose to use the unit as is, or add your own media such as rocks or even real logs.

Depending on your needs, you can choose to use the integrated water reservoir which ensures continuous operation for up to 8 hours. Alternatively, the Pro 500 can be plumbed to a water supply for uninterrupted use. Also unique to this unit is an integrated crackling sound which complements the life-like flames with another facet of realism. A multi-function remote control is included with the unit and allows for control of the flames as well as the sound effects.

The revolutionary Opti-myst by Dimplex reinvents the electric fireplace and makes it easier than ever to add a dramatic fire feature to any space. See-through,three-sided, open concept, the possibilities are endless,so go ahead, play with fire.

Product Dimensions

  • H 9 12 in x W 20 in x D 12 in
  • H 24.1 cm x W 50.8 cm x D 30.5 cm

Product Details

Technology Opti-Myst
Volts 120
Wattage 230
Amps 3.83
BTUs 785
Remote Opti-myst Multi Functional Remote (included)

Key Features and Benefits

Opti-myst® technology
Incredibly, life-like, patented 3-dimensional flame effect. Creates an illusion of fire and smoke. The world’s most authentic fireplace experience.

Modular Design
Multiple 20" (50.8 cm) and 40" (101.8 cm) cassettes can be combined in series to achieve the desired length for dramatic linear installations impossible to achieve with gas fires.

With no flame heat or emission and a glass front that remains cool to the touch; our fireplaces are the safe choice for your home.

Customizable Flame Width
Includes spacers and slots for customizable flame width and pattern.

Adjustable Flame Intensity
Control the desired volume of flame to suit.

Continuous Water Supply
Optional plumbed water supply kit provides continuous operation without refilling water tanks.

All-day Flames
Fill the water tank with tap water and enjoy up to 8 hours of continuous flames.

Crackling Sound Effects
Enjoy a more complete sensory experience with the sound of natural wood fire

Frame, Wire and Finish
Basic installation requires fewer tradespeople, no gas lines, venting or chimney

Zero Emissions
The most sustainable fireplace option; no emissions and 100% efficient.

Energy Efficient
Uses low-energy LED lights for lowcost operation.

Heat-free Operation
Designed with the sole purpose of providing a stunning visual fire feature.

Sight and Sound Remote
Control the flames and crackling sound effects at the touch of a button.



  • 2 year warranty

Available Accessories:

Click to see Burning Media
  • Log Set (CDFILOG)
  • Black Rock Media

  • River Rock Media

  • Driftwood Media


Click to see Plug Kit
  • Designed to work with the Opti-Myst Pro 500 Electric Fireplace and the Opti-Myst Pro 1000 Electric Fireplace
  • Add a kit that allows this fireplace to be plugged into a 120V outlet rather than hard-wiring


Click to see Plumbing Kit

Optional plumbing kit allows for continuous water supply, eliminating
the need to fill water reservoirs. Complete with an overflow safety
sensor, automatically shuts off the water supply to prevent any leaks.


Click to see Direct-wire Heater

Enjoy instant comfort and warmth with the Opti-myst® Direct-wire Heater Accessory. This effective fan-forced heater provides supplemental warmth for up to 400 sq.ft. and is designed to be recessed to maintain the seamless appearance of any Opti-myst® installation.

Customer Reviews
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Filter Reviews:

    Dimplex Opti-Myst 1000 Water Vapor 40" Electric Fireplace Cassette

    Unbelievable idea. No approval from fire department and no construction of an exhaust system are required. Lots of savings right there. Life like fire experience. Customer service is amazing. Thank you all.

    Alexandr N.
    United States United States

    Old fashioned Customer Service - real people!

    We have just received our Dimplex Pro1000! Can't wait to get it installed to add this beautiful feature to our home. US Fireplace has been great to work with from answering questions to on-time delivery.

    D. Geno

    Customer service was very helpful

    Customer service was very helpful in choosing products, I absolutely love my Dimplex Opti-Myst.

    Michelle M.

    Safe to use

    We think its perfect for our family since tere is no heat.

    Latoya C.

    very nice product

    Just opened the box and in 5 minutes I'm watching a wonderful flame. Can't wait to build my fireplace to put in in. Looks great even on Mt kitchen island

    William S.