The Optimyst® Linear is a water vapor electric fireplace that creates ultra-realistic 3D flames and smoke using patented vapor technology and LED lighting. Designed for residential living spaces and feature walls, it offers safe, heat-free flame visuals and is available in widths from 46" to 86".

How The Dimplex Optimyst 66" Compares To Other Fireplace Options

Homeowners evaluating vapor fireplaces for mid-size feature walls usually face this question: should I get the compact Optimyst 46", this mid-size 66" model, or the 86" flagship for maximum visual impact?

Here's the honest comparison:

Feature Dimplex Optimyst 46" ($5,399) Dimplex Optimyst 66" ($7,399) Dimplex Optimyst 86" ($8,199)
Flame Technology Patented Optimyst vapor technology, true 3D flames and smoke Patented Optimyst vapor technology, true 3D flames and smoke Patented Optimyst vapor technology, true 3D flames and smoke
Fireplace Width 46 in. 66 in., mid-size feature wall coverage 86 in., largest in the lineup
Glass Temperature Cool to the touch, no heat generated Cool to the touch, no heat generated Cool to the touch, no heat generated
Smoke Effect Realistic smoke effect Realistic smoke effect Realistic smoke effect
Sound Effects Adjustable crackling sound Adjustable crackling sound Adjustable crackling sound
Flame Shape Customization Adjustable spacers Adjustable spacers Adjustable spacers
Water Supply Manual refill or main water line connection Manual refill or main water line connection Manual refill or main water line connection
Heating On-demand supplemental heating up to 1,000 sq. ft. On-demand supplemental heating up to 1,000 sq. ft. On-demand supplemental heating up to 1,000 sq. ft.
Best Suited For Compact feature walls, smaller rooms Mid-size living rooms and feature walls Large-scale feature walls, expansive rooms

Why The Dimplex Optimyst 66" Is Worth The Investment

This isn't just an electric fireplace, it's built on the same patented vapor technology as Dimplex's full-size Optimyst models, sized to fill a mid-size feature wall with true 3D flame and smoke realism without the scale or cost of the largest 86" flagship.

The Optimyst 66" specifically addresses the needs of homeowners with mid-size living rooms or feature walls who want the most convincing flame experience available in an electric fireplace, especially in homes with children or pets.

True 3D Flame And Smoke, Sized Right For The Room. Patented vapor flame technology and advanced LED lighting work together to imitate true flames and smoke, delivering the same dimensional, moving fire effect as the larger Optimyst models across a 66" width that fits comfortably in a mid-size living room or media wall.

Built For Safety Without Sacrificing Realism

Because the flames do not generate heat, the glass stays cool to the touch, making it safer around children and pets than heat-producing fireplace options

There are no harmful emissions, making the Optimyst a sustainable, eco-friendly choice for year-round ambiance

An on-demand heater can be turned off entirely, allowing flame-only enjoyment regardless of the season

Engineered For A Complete Sensory Experience

Adjustable spacers allow the flame width and shape to be customized for a unique fire display

An adjustable crackling sound effect adds an additional layer of realism beyond the visual flame

Multicolor flame effects and individual light control allow the display to shift from a traditional amber glow to fully customizable colors

Real Savings

No combustion and no emissions eliminate the venting, chimney, or gas line costs associated with real fireplaces

Connecting to a main water line eliminates the need for manual refills, reducing maintenance over time

Cool-touch glass reduces the safety modifications or barriers often needed around heat-producing fireplaces in homes with children or pets

Free shipping and no sales tax through Summit Forge Supply keeps the total cost down compared to buying elsewhere and paying tax and freight separately

The Bottom Line Homeowners with mid-size living rooms or feature walls who want the same realistic, safe flame experience found in Dimplex's larger Optimyst models can't get true 3D flame and smoke realism from a standard LED unit at this scale. The Dimplex Optimyst 66" is built with patented vapor technology, cool-touch glass, and a complete sensory experience including sound, so it delivers a genuinely lifelike fire without heat or emissions, sized right for a mid-size space. For anyone with a feature wall that calls for real presence without going to the largest available size, this is the unit built to fit.

  • Patented Optimyst® vapor technology produces lifelike 3D flames and smoke without real fire.
  • Advanced LED lighting enhances flame depth and realism for a true-to-life effect.
  • Zero-clearance firebox with slim 12" depth enables flexible built-in installation.
  • Clean, vent-free operation with continuous water supply option ensures reliable performance.

Key Technical Specifications

  • Voltage 120/240 V

  • BTU 5050/7438

  • Adjustable Flame Speed Yes

  • Adjustable Brightness Yes

  • Timer Yes

  • Size 66"

  • Product Width(in) 67.5

  • Product Height (in) 31.5

  • Warranty 2 yr limited

  • Power Source Electric

  • Heat Vent location Front

  • Display Type LED

  • Remote Control Yes

  • Front Glass Type Tempered


All Optimyst 66" Linear Vapor Fireplace Specifications

  • Decibels 55

  • Element Type Ceramic

  • Battery Size in Remote Control CR2032

  • Battery Technology in Remote Control Lithium Ion

  • Light bulb Type LED

Useful Downloads

OLF66-AM - Technical Specifications (EN) Download
Owners Manual (EN · FR · ES) Download
Sell Sheet (EN) Download
Service Manual (EN) Download

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