Built-In Water Vapor Electric Fireplace
Dimplex Optimyst 46-Inch Built-In Linear Electric Fireplace – OLF46-AM
A three-dimensional water-vapor fireplace with LED flame effects, supplemental heat, 120V or 240V installation, app control, and a slim zero-clearance design.
Model OLF46-AM Optimyst 3D Flame Up to 6,551 BTU Up to 1,000 sq. ft. 120V / 240V
Best for: Modern feature walls, media walls, residential interiors, hospitality spaces, and custom built-in installations.
Quick Product Facts
Flame TechnologyWater Vapor + LED
Maximum Heat6,551 BTU
Heating AreaUp to 1,000 sq. ft.
Installation DepthMinimum 12 in.
Dimplex Optimyst 46-Inch Built-In Linear Electric Fireplace – OLF46-AM
The Dimplex Optimyst OLF46-AM is a 46-inch built-in linear electric fireplace that combines fine water mist and LED lighting to create a three-dimensional flame and smoke effect without combustion. Designed for modern feature walls, residential interiors, commercial spaces, and custom fireplace installations, it delivers realistic visual depth with no gas line, chimney, or conventional fireplace venting required.
The fireplace can operate with the flame effect alone for year-round ambiance or with its proportional fan-forced heater for supplemental warmth. It supports both 120-volt and 240-volt electrical configurations, produces up to 6,551 BTU at 240 volts, and can provide supplemental heating for spaces up to 1,000 square feet under appropriate conditions.
Control the fireplace with the included multifunction remote, the concealed touch controls, or the Dimplex Flame Connect app. Adjustable flame settings, sound control, heating modes, a slim zero-clearance firebox, and an optional continuous water connection make the OLF46-AM a flexible centerpiece for professionally designed interiors.
What Is the Dimplex Optimyst OLF46-AM?
The Dimplex OLF46-AM is a 46-inch built-in electric fireplace that uses illuminated fine water mist to create a three-dimensional flame and smoke effect. It can operate with or without heat, supports 120V or 240V wiring, and requires a minimum 80-square-inch fresh-air inlet for proper mist-system performance.
Dimplex OLF46-AM at a Glance
| Product Type |
Built-in linear electric fireplace |
| Model |
OLF46-AM |
| Order Number |
X-136786 / 136786 |
| Flame Technology |
Optimyst water vapor and LED flame effect |
| Installation Type |
Built-in, zero-clearance installation |
| Electrical Supply |
120V or 240V |
| Maximum Heat Output |
4,163 BTU at 120V / 6,551 BTU at 240V |
| Heating Type |
Proportional fan-forced supplemental heater |
| Supplemental Heating Area |
Up to 1,000 sq. ft. |
| Fireplace Venting |
No chimney or combustion venting required |
| Required Fresh-Air Inlet |
Minimum 80 sq. in. / 516 sq. cm |
| Controls |
Included remote, hidden touch controls, and Flame Connect app |
| Warranty |
2-year limited manufacturer warranty |
Why Choose the Dimplex Optimyst OLF46-AM?
Three-Dimensional Water Vapor Flames
Optimyst technology uses illuminated fine water mist to imitate the appearance of rising flames and smoke. Because the visual effect exists in three-dimensional space rather than only on a flat screen, it can provide greater depth and movement than a conventional two-dimensional electric flame display.
No Combustion or Fuel Storage
The fireplace operates with water and electricity. It does not burn wood or gas, so there is no combustion, ash, soot, fuel storage, or conventional chimney system to manage.
Flames With or Without Heat
Operate the flame effect independently from the heater when you want ambiance without additional warmth. This makes the fireplace suitable for year-round use rather than limiting operation to colder months.
120V or 240V Installation
The OLF46-AM supports 120-volt and 240-volt electrical configurations. A 240-volt connection provides the fireplace's higher heating output, while both configurations support its visual and control functions.
Multiple Control Options
Adjust the fireplace using the included multifunction remote, the built-in hidden touch controls, or the Dimplex Flame Connect app on a compatible mobile device.
Slim Built-In Design
The approximately 12-inch-deep, zero-clearance firebox is designed for integrated wall installations where a clean linear appearance and manageable framing depth are priorities.
How Dimplex Optimyst Technology Works
Optimyst technology creates its flame illusion by combining fine water mist with carefully positioned LED lighting. The illuminated mist rises through the ember bed and produces moving, three-dimensional shapes that resemble flames and smoke.
Because the visual effect is produced by light and water vapor rather than combustion, the fireplace does not create a real flame. This eliminates wood ash, gas combustion, and smoke while preserving the visual character buyers expect from a fireplace.
The appearance of the effect can vary naturally as the mist moves. Flame and volume settings can be adjusted to suit the room, desired atmosphere, and viewing conditions.
The OLF46-AM includes a proportional fan-forced heater designed for supplemental room heating. Dimplex states that the Optimyst Linear Series can provide supplemental heat for areas up to 1,000 square feet, although actual performance depends on ceiling height, insulation, room layout, outdoor temperature, and other building conditions.
| Electrical Configuration |
Power |
Current |
Heat Output |
| 120V |
1,220 watts |
10.2 amps |
Approximately 4,163 BTU |
| 240V |
1,920 watts |
8.0 amps |
Approximately 6,551 BTU |
Available heater functions include proportional heating and operating modes such as Eco, Boost, and fan mode. The flame effect can also be used with the heater switched off.
This fireplace is intended for supplemental comfort and ambiance. Heating coverage should not be interpreted as guaranteed whole-home or primary heating capacity.
Flame, Sound, and Comfort Controls
-
Adjustable flame effect: Personalize the visual intensity and appearance of the water-vapor flame.
-
Adjustable sound volume: Change the volume of the fireplace sound effect or turn it off.
-
Flame-only operation: Enjoy the fireplace effect without activating the heater.
-
Flame-and-heat operation: Combine the visual effect with supplemental warmth.
-
Eco heating mode: Use an energy-conscious heating setting for comfort management.
-
Boost mode: Increase heat delivery when additional warmth is wanted.
-
Fan mode: Operate the fan according to the available fireplace control settings.
-
Remote control: Manage key functions without accessing the fireplace control panel.
-
Hidden touch controls: Access built-in controls while maintaining a clean finished appearance.
-
Flame Connect app: Control compatible functions from a mobile device when the fireplace is installed where the required wireless connection is available.
Water Supply and Continuous Operation
Water is essential to the Optimyst flame effect because the fireplace converts water into the fine mist illuminated by its LED system.
The fireplace is designed to support an optional connection to a continuous water supply. When a permanent water connection is used, all plumbing work must meet applicable local plumbing requirements. The shutoff connection should remain accessible for scheduled maintenance and service.
A manufacturer plumbing kit is available separately for connection with 1/4-inch copper piping. The fireplace also incorporates an overflow sensor designed to shut off the water supply if an overflow condition is detected.
Important Water-System Consideration
Follow the owner's manual for filling, water-quality guidance, cleaning, shutdown, and maintenance procedures. Mineral buildup or neglected cleaning can affect the quality of the mist and flame effect.
Installation Requirements and Planning
The Dimplex OLF46-AM is designed for built-in installation within a properly prepared framed enclosure. Installation must follow the manufacturer's instructions and all applicable electrical, plumbing, and building requirements.
Required Framing Opening
| Minimum Framing Width |
48 in. / 121.9 cm |
| Framing Height |
31 3/4 in. / 80.6 cm |
| Minimum Framing Depth |
12 in. / 30.5 cm |
| Drywall Opening Width |
46 3/16 in. / 117.4 cm |
| Drywall Opening Height |
17 1/2 in. / 44.5 cm |
Fresh-Air Inlet Is Required
Although the fireplace does not require combustion venting, it does require a fresh-air inlet for proper operation of the mist and flame system. The OLF46-AM requires a minimum unobstructed inlet area of 80 square inches / 516 square centimeters.
The air path must reach the underside of the unit. This requirement must be incorporated into framing and drywall planning. If a decorative grille covers the opening, the total opening must be enlarged as needed to compensate for the grille's blocked area.
Do Not Omit the Fresh-Air Inlet
Failure to provide the required fresh-air inlet can cause poor flame performance and may damage the fireplace.
Recommended Installation Height
For an optimized viewing angle, Dimplex recommends positioning the bottom of the fireplace between 5 inches and 50 inches above the floor.
Electrical Planning
The fireplace may be configured for 120V or 240V operation. Electrical work must follow the owner's manual and applicable electrical codes. A qualified professional should confirm the circuit, wiring method, overcurrent protection, and connection requirements for the selected voltage.
Objects Installed Above the Fireplace
When mounting a television, mantel, artwork, or another temperature-sensitive object above the heater, follow the installation and temperature-clearance requirements supplied by that object's manufacturer.
Bathroom Installations
When installed in a bathroom, the fireplace must be protected by a GFCI receptacle or circuit. The unit is not watertight and must be positioned to prevent water from entering it. Never install it where it could fall into a bathtub or another water container.
Ideal Applications
- Modern living-room feature walls
- Custom media walls
- Bedrooms and primary suites
- Condominiums and apartments where permitted
- Residential renovation projects
- New-construction fireplace installations
- Hospitality and reception spaces
- Restaurants, lounges, and commercial interiors
- Designer-led residential and commercial projects
Who Is the Dimplex OLF46-AM Best For?
This Fireplace May Be a Good Choice If You Want:
- A three-dimensional electric flame effect rather than a flat-screen flame image
- A fireplace that does not burn gas or wood
- Built-in linear styling for a contemporary wall design
- Ambiance that can operate without heat
- Supplemental electric heating
- Remote, touch-panel, and app-based controls
- The option to connect the fireplace to a continuous water line
- A slim firebox with approximately 12 inches of framing depth
Consider Another Fireplace Type If You Need:
- A real wood-burning or gas flame
- A fireplace that operates without electricity
- A primary heating system for an entire home
- An outdoor fireplace
- An installation that cannot accommodate the required fresh-air inlet
- A flame-effect system that does not require water or periodic water-system maintenance
Complete Specifications
| Brand |
Dimplex |
| Series |
Optimyst Linear |
| Model Number |
OLF46-AM |
| Order / Material Number |
X-136786 / 136786 |
| Regulatory Model Number |
6911540100 |
| Product Description |
46-inch linear electric water-vapor fireplace |
| Installation |
Built-in, zero-clearance |
| Fuel / Energy Source |
Electricity and water |
| Flame Technology |
Patented multicolor 3D flame effect produced by LED lights and fine mist |
| Operating Options |
Flame only or flame with heat |
| Heater Type |
Proportional fan-forced heater |
| Heating Modes |
Includes Eco, Boost, and fan operating modes |
| Heating Area |
Supplemental heating for up to 1,000 sq. ft. |
| Voltage |
120V / 240V |
| Wattage |
1,220W at 120V / 1,920W at 240V |
| Amperage |
10.2A at 120V / 8.0A at 240V |
| Heat Output |
Approximately 4,163 BTU at 120V / 6,551 BTU at 240V |
| Overall Width |
47 1/2 in. / 120.6 cm |
| Overall Height |
31 1/2 in. / 80.0 cm |
| Overall Depth |
11 7/8 in. / 30.0 cm |
| Viewing Area |
44 1/4 in. W × 14 3/8 in. H / 112.2 × 36.3 cm |
| Minimum Framing Width |
48 in. / 121.9 cm |
| Framing Height |
31 3/4 in. / 80.6 cm |
| Minimum Framing Depth |
12 in. / 30.5 cm |
| Drywall Opening |
46 3/16 in. W × 17 1/2 in. H / 117.4 × 44.5 cm |
| Fresh-Air Inlet |
Minimum 80 sq. in. / 516 sq. cm |
| Combustion Venting |
Not required |
| Water Connection |
Optional continuous plumbing connection |
| Overflow Protection |
Overflow sensor designed to shut off the water supply |
| Control Options |
Flame Connect app, multifunction remote, hidden touch controls, and internal power switch |
| Included Media |
Acrylic crystals and driftwood ember bed |
| Listing |
cULus listed, file E71416 |
| Referenced Standards |
UL 2021 and CSA C22.2 No. 46 |
| Warranty |
2-year limited warranty on electrical components |
Specifications, dimensions, finishes, and product details are subject to change. Confirm current requirements in the manufacturer's documentation before framing, wiring, plumbing, or installation.
What's Included
- Dimplex Optimyst OLF46-AM linear electric fireplace
- Multifunction remote control
- Acrylic crystal media
- Driftwood ember-bed media
Review the delivered package and owner's manual before installation. Optional installation accessories are not included unless separately listed with the purchase.
Manufacturer-Listed Optional Accessories
-
CDFIPLUMB-KIT: Plumbing kit for connecting the fireplace to a continuous water supply using 1/4-inch copper piping.
-
OLFPLUG: Optional plug kit.
Confirm accessory compatibility, electrical configuration, and installation requirements before ordering.
Maintenance and Care
The Optimyst flame system depends on clean water-system components, unobstructed airflow, and properly functioning mist modules. Follow the owner's manual for the complete maintenance schedule and approved procedures.
- Disconnect electrical power before cleaning or servicing the fireplace.
- Keep the required fresh-air pathway and inlet openings unobstructed.
- Inspect and clean water-system components according to the owner's manual.
- Address mineral buildup promptly because deposits may reduce mist and flame quality.
- Use only cleaning methods and products approved in the manufacturer documentation.
- Keep the glass and visible surfaces clean using appropriate non-abrasive methods.
- Use qualified service personnel for internal diagnostics, electrical repairs, and component replacement.
The fireplace incorporates self-diagnostic capabilities intended to simplify troubleshooting. Refer to the owner's manual or service manual when an error condition or performance issue occurs.
Warranty
The Dimplex Optimyst OLF46-AM is backed by a 2-year limited manufacturer warranty on electrical components. Warranty coverage is subject to the manufacturer's terms, limitations, installation requirements, exclusions, and proof-of-purchase conditions.
Review the owner's manual for complete warranty language before installation or service.
Frequently Asked Questions
Does the Dimplex OLF46-AM use real fire?
No. The OLF46-AM does not use combustion or a real flame. It combines fine water mist with LED lighting to create a three-dimensional visual effect that resembles flames and smoke.
Does the Dimplex Optimyst OLF46-AM require venting?
It does not require a chimney, flue, or combustion vent. However, the enclosure must include a minimum 80-square-inch fresh-air inlet with an air path reaching the underside of the fireplace. This inlet is required for proper flame performance.
Does the OLF46-AM produce heat?
Yes. It includes a proportional fan-forced heater that produces approximately 4,163 BTU at 120 volts or 6,551 BTU at 240 volts. Dimplex describes it as supplemental heating for areas up to 1,000 square feet under suitable conditions.
Can I operate the flame effect without heat?
Yes. The flame effect and heater can operate independently, allowing you to enjoy the Optimyst visual effect without adding heat to the room.
Does the Optimyst OLF46-AM require water?
Yes. Water is required to produce the fine mist used in the Optimyst flame effect. The fireplace can also be connected to a continuous water supply with the appropriate optional plumbing kit and a code-compliant installation.
Can the fireplace be connected to a permanent water line?
Yes. The OLF46-AM supports an optional continuous water connection. Dimplex lists the CDFIPLUMB-KIT for use with 1/4-inch copper piping. The connection and accessible shutoff must comply with local plumbing requirements.
What happens if the water system overfills?
The fireplace includes an overflow sensor designed to shut off the incoming water supply when an overflow condition is detected. Proper installation and routine maintenance are still required.
Can the OLF46-AM run on both 120V and 240V?
Yes. The fireplace supports 120V and 240V electrical configurations. The 240V configuration provides the higher heating output. Electrical installation must follow the manufacturer's instructions and applicable codes.
What are the framing dimensions for the OLF46-AM?
The required framed opening is 48 inches wide, 31 3/4 inches high, and at least 12 inches deep. The specified drywall opening is 46 3/16 inches wide by 17 1/2 inches high.
How large is the viewing area?
The viewing area measures approximately 44 1/4 inches wide by 14 3/8 inches high.
How deep is the Dimplex OLF46-AM?
The fireplace is approximately 11 7/8 inches deep. The installation requires a framed enclosure with a minimum depth of 12 inches.
Does the fireplace include a remote control?
Yes. A multifunction remote control is included. The fireplace can also be operated using its hidden touch controls or the Dimplex Flame Connect app.
Can I control the OLF46-AM with a smartphone?
Yes. Compatible functions can be controlled with the Dimplex Flame Connect app. Install the fireplace where the wireless connection required by the app is available.
Can the Dimplex OLF46-AM be installed below a television?
A television or another temperature-sensitive object may require specific spacing and temperature protection. Follow the television manufacturer's installation requirements and the Dimplex installation instructions before finalizing the wall design.
Can the OLF46-AM be installed in a bathroom?
Bathroom installation is permitted only when the fireplace is protected by a GFCI receptacle or circuit and located where water cannot enter the appliance. The fireplace is not watertight and must not be positioned where it could fall into a bathtub or other water container.
Is the surface safe to touch?
The manufacturer describes the unit as having safe, cool-touch surfaces. However, the fireplace includes a working heater, so users should follow all safety warnings, supervise children and pets, and avoid obstructing the heat outlet.
Is the Dimplex OLF46-AM suitable as a primary heat source?
It is designed for supplemental heating and should not automatically be treated as a home's primary heating system. Actual room-heating performance depends on insulation, ceiling height, climate, room layout, and other conditions.
What media is included with the fireplace?
The Optimyst Linear firebox includes acrylic crystals and a driftwood ember bed, allowing the interior presentation to combine contemporary crystal media with natural-looking decorative elements.
What maintenance does an Optimyst fireplace require?
Maintenance includes keeping the airflow openings clear, cleaning the water and mist-system components as directed, controlling mineral buildup, and cleaning visible surfaces. Follow the owner's manual for the required procedures and intervals.
What warranty covers the OLF46-AM?
The product carries a two-year limited manufacturer warranty on electrical components. Coverage remains subject to the complete warranty terms in the manufacturer's documentation.
A Realistic Water-Vapor Fireplace for Custom Modern Interiors
The Dimplex Optimyst OLF46-AM is best suited to buyers who prioritize realistic three-dimensional ambiance, built-in linear styling, flexible electric heat, and multiple control options. Its water-vapor flame system provides a distinctive alternative to flat electric flame displays, while its approximately 12-inch framing depth supports integration into many custom feature-wall designs.
Before ordering, confirm that the project can accommodate the required framing dimensions, electrical supply, 80-square-inch fresh-air inlet, water-system maintenance needs, and any optional plumbing connection. Final installation must follow the current Dimplex manuals and all applicable local requirements.
Important Product and Installation Notice
Specifications and manufacturer requirements may change. Confirm the current Dimplex documentation before framing, wiring, plumbing, installing, operating, or servicing the fireplace.
Electrical and plumbing work must comply with applicable requirements and should be completed by appropriately qualified professionals.
