Indoor & Covered Outdoor Smart Electric Fireplace
Amantii Symmetry XT Lumina 42-Inch Built-In Smart Electric Fireplace
The Amantii Symmetry XT Lumina 42-Inch Electric Fireplace is a built-in smart fireplace designed for indoor rooms and covered outdoor spaces. It combines an extra-tall 18-inch viewing area, WiFi control, a programmable thermostatic remote, adjustable flame brightness and speed, dynamic ember-bed colors, hidden front-flow heating, and selectable 120V or 240V heating performance.
Unobstructed viewing area 18-Inch Tall
Smartphone app control WiFi Enabled
Selectable heating output 5,000–10,230 BTU
Flexible installation use Indoor / Covered Outdoor
Is the Symmetry XT Lumina 42 Right for Your Project?
Best For
- Modern living rooms and entertainment spaces
- Covered patios, porches, and protected outdoor retreats
- New construction and renovation projects
- Residential and commercial interiors
- Restaurants, lounges, and hospitality spaces
- Buyers who want app, remote, timer, and thermostat control
- Projects requiring a tall, clean viewing area without visible venting
Not Recommended For
- Uncovered outdoor locations exposed directly to weather
- Installations that do not follow the required manual clearances
- Projects requiring a wood- or gas-burning flame
- Whole-home primary heating applications
- 240V performance without an appropriate electrical connection
Quick Specifications
| Model |
SYM-42-XT-LUMINA |
| Product Series |
Amantii Symmetry XT Lumina |
| Fireplace Type |
Built-in smart electric fireplace |
| Nominal Size |
42 inches |
| Viewing Area |
18-inch-tall glass viewing area |
| Approved Locations |
Indoor and covered outdoor installations |
| Standard Heating Output |
1,465 watts / 5,000 BTU |
| Standard Heating Coverage |
Up to 500 square feet |
| Optional 240V Heating Output |
Up to 3,000 watts / 10,230 BTU |
| 240V Heating Coverage |
Up to 900 square feet |
| Temperature Range |
59°F to 82°F (15°C to 28°C) |
| WiFi Connectivity |
Yes; smartphone control through the dedicated app |
| Remote Control |
Patented programmable thermostatic remote included |
| Flame Controls |
Adjustable brightness and multi-speed flame control |
| Flame Color Presets |
Yellow, orange, and red |
| Ember-Bed Lighting |
Multiple colors with automatic color mixing |
| Heating Design |
Front-flow heating with concealed venting |
| LED Life |
Rated for up to 50,000 hours |
| Included Media |
Real glass and glowing log media |
| Optional Accessories |
Optional media kits and masonry-finish trim options, sold separately |
A Taller, Cleaner Fireplace Presentation
The Symmetry XT Lumina 42 is designed for projects that need more visual height than a conventional linear electric fireplace. Its 18-inch-tall viewing area creates a larger flame presentation, while concealed venting keeps the front clean and unobstructed.
The streamlined design works well in contemporary living rooms, feature walls, hospitality settings, restaurants, and covered outdoor entertainment areas. Front-flow heating supports recessed or semi-flush installation styles without placing visible vents across the primary glass display.
Adjustable flame speed, independent flame brightness, selectable flame colors, and dynamic ember-bed lighting allow the appearance to be changed for everyday use, entertaining, or seasonal décor. The flame display can provide visual ambiance while the heating controls manage supplemental room comfort.
Key Features and Buyer Benefits
Extra-Tall Viewing Area
The 18-inch-tall glass viewing area provides a more substantial flame presentation and helps the fireplace serve as a stronger architectural focal point.
Hidden Front Venting
Concealed front-flow heating supports a cleaner finished appearance without visible venting interrupting the viewing area.
WiFi Smartphone Control
Connect through the dedicated mobile app to manage supported fireplace functions from a compatible smartphone.
Programmable Comfort
Use the timer and thermostat controls to set a preferred temperature or schedule operation around your routine.
Adjustable Flame Presentation
Independently adjust flame brightness and speed to create anything from a subtle background glow to a more active fire display.
Dynamic Ember-Bed Colors
Multiple ember-bed colors and automatic color mixing provide a broad range of coordinated lighting combinations.
Dual Heating Capability
Standard operation delivers 5,000 BTU, while optional 240V wiring increases output to as much as 10,230 BTU.
Quiet Operation
Ultra-quiet components are intended to preserve the room atmosphere without distracting mechanical noise.
Long-Life LED Lighting
The LED light source is rated for up to 50,000 hours for durable, low-maintenance flame illumination.
Yellow, Orange, and Red Flame Color Options
Choose from three distinct flame color presets to coordinate the fireplace with your interior design, outdoor setting, or preferred atmosphere. Flame brightness and speed can also be adjusted independently for greater visual control.
Yellow Flame
Creates a warm golden appearance suited to traditional, transitional, and softly lit interiors.
Orange Flame
Produces a balanced, familiar fire color for a natural-looking everyday presentation.
Red Flame
Adds a bolder, more dramatic effect for contemporary rooms and evening entertainment settings.
Visual customization: Flame brightness, flame speed, and ember-bed lighting can be adjusted to create coordinated color combinations.
Standard Heating
- 1,465-watt output
- Up to 5,000 BTU
- Designed to heat areas up to 500 square feet
- Best used as supplemental zone heating
Optional 240V Heating
- Up to 3,000-watt output
- Up to 10,230 BTU
- Designed to heat areas up to 900 square feet
- Requires an appropriate 240V electrical connection
The adjustable thermostat supports room-temperature settings from 59°F to 82°F (15°C to 28°C). The programmable timer and thermostat allow the fireplace to be scheduled around occupancy and comfort preferences.
Heating guidance: Published coverage is based on the supplied product information. Actual results depend on insulation, ceiling height, room layout, outdoor conditions, and heat loss.
Smart Controls for Everyday Convenience
Dedicated Mobile App
WiFi connectivity allows the fireplace to connect to a smartphone through the dedicated app available for supported Apple and Android devices.
Thermostatic Remote
The included patented remote provides convenient control from elsewhere in the room without relying exclusively on a smartphone.
Timer and Scheduling
Program operation around your routine, such as preparing a room before arrival or managing heat during selected periods.
Indoor and Covered Outdoor Installation
The Symmetry XT Lumina is designed for indoor installations and approved covered outdoor locations. Suitable examples include protected patios, porches, and areas beneath an appropriate overhang.
Indoor Applications
- Living rooms
- Bedrooms
- Dining rooms
- Media rooms
- Restaurants and hospitality spaces
- Commercial lounges and reception areas
Covered Outdoor Applications
- Covered patios
- Protected porches
- Outdoor entertainment walls
- Covered restaurant seating areas
- Protected outdoor kitchens
- Locations beneath suitable overhangs
Outdoor limitation: Do not treat “outdoor approved” as approval for an uncovered location. Outdoor placement must be covered and must follow the manufacturer's installation requirements.
Installation Planning
Confirm the Installation Location
Select an indoor wall or a properly covered outdoor area protected from direct exposure according to the installation requirements.
Choose the Heating Configuration
Determine whether standard 120V performance is sufficient or whether the project requires the higher-output 240V configuration.
Plan the Finished Appearance
Account for the recessed or semi-flush installation style, front-flow heating, concealed venting, and any optional trim selected for the project.
Verify Framing and Clearances
Use the official installation manual to confirm opening dimensions, clearances, finishing restrictions, and approved construction details before framing.
Complete Electrical Installation
Electrical work must match the selected voltage configuration and applicable electrical requirements.
Important: Exact framing dimensions, clearances, electrical connection details, and finishing requirements were not included in the supplied product information. Confirm these items in the official manual before installation.
Included
- Real glass media
- Glowing log media
- Programmable thermostatic remote control
- Integrated WiFi capability
- Front-flow heating system
Optional, Sold Separately
- Additional decorative media kits
- Masonry-finish trim option
- Clear reduced-trim configuration
- Other compatible finishing accessories
Confirm accessory compatibility with the 42-inch Symmetry XT Lumina model before ordering.
Ideal Applications
Residential Interiors
Use the extra-tall flame display as a feature-wall focal point in living rooms, bedrooms, dining spaces, and media rooms.
Covered Outdoor Living
Add flame ambiance and supplemental warmth to protected patios, porches, and covered entertainment areas.
Commercial Projects
Suitable for restaurants, reception areas, lounges, hospitality spaces, and other installations requiring a modern electric focal point.
New Construction
Plan the fireplace into a new feature wall with the appropriate framing, electrical supply, and selected trim treatment.
Renovations
Introduce a built-in fireplace effect without installing a gas line, chimney, or wood-burning firebox.
Design-Focused Spaces
The hidden venting and tall viewing area suit modern designs where a streamlined architectural appearance is a priority.
Technical Specifications
| Brand |
Amantii |
| Series |
Symmetry XT Lumina |
| Model Number |
SYM-42-XT-LUMINA |
| Nominal Width |
42 inches |
| Product Type |
Built-in linear electric fireplace |
| Installation Orientation |
Built-in; recessed or semi-flush applications supported by the supplied product description |
| Viewing Window Height |
18 inches |
| Visible Venting |
No visible venting across the viewing area |
| Heat Direction |
Front flow |
| Standard Wattage |
1,465 watts |
| Standard BTU Output |
5,000 BTU |
| Standard Heating Area |
Up to 500 square feet |
| Optional 240V Wattage |
Up to 3,000 watts |
| Optional 240V BTU Output |
Up to 10,230 BTU |
| Optional 240V Heating Area |
Up to 900 square feet |
| Thermostat Range |
59°F to 82°F (15°C to 28°C) |
| Timer |
Programmable |
| WiFi |
Included |
| Mobile Control |
Supported through the dedicated smartphone app |
| Remote |
Programmable thermostatic remote included |
| Flame Brightness |
Adjustable |
| Flame Speed |
Adjustable, multiple speeds |
| Flame Colors |
Yellow, orange, and red |
| Ember-Bed Colors |
Multiple colors with automatic mixing |
| Lighting Technology |
Long-life LED |
| LED Rating |
Up to 50,000 hours |
| Media |
Real glass and glowing log media |
| Approved Use |
Indoor and covered outdoor locations |
| Other Series Sizes |
34, 50, 60, 74, 88, and 100 inches |
Verify final dimensions, framing specifications, electrical requirements, clearances, certifications, and accessory compatibility using the official documentation before ordering or installation.
Product Decision Summary
| Choose This Model If |
You want a 42-inch built-in electric fireplace with an extra-tall display, smart controls, adjustable flame effects, and covered outdoor approval. |
| Choose 120V Operation If |
You need standard supplemental heat up to 5,000 BTU for a space up to approximately 500 square feet. |
| Choose 240V Operation If |
You need higher output up to 10,230 BTU and have an appropriate 240V electrical connection. |
| Do Not Choose This Model If |
The fireplace will be installed in an uncovered outdoor location or used as the sole heating source for an entire home. |
Expert Recommendation
Choose the Amantii Symmetry XT Lumina 42 when the project calls for a premium built-in electric fireplace with a taller-than-standard flame presentation and flexible indoor or covered outdoor placement. It is especially well suited to contemporary feature walls where hidden venting, app control, adjustable flame effects, and a clean architectural finish are priorities.
Select the standard configuration for everyday supplemental heating or plan for a 240V connection when the higher 10,230-BTU output is required. Confirm framing, electrical requirements, clearances, and outdoor placement rules before construction begins.
Frequently Asked Questions
Can the Amantii Symmetry XT Lumina 42 be installed outdoors?
Yes, it is approved for covered outdoor installations such as protected patios, porches, and overhang areas. Do not install it in an uncovered location exposed directly to weather.
Does the Symmetry XT Lumina 42 require venting?
It does not require a chimney or gas vent, and its heating vents are concealed for a clean front appearance. Do not block the front-flow heating outlet or required clearances.
How much space can the Symmetry XT Lumina 42 heat?
It is rated for up to 500 square feet at 5,000 BTU and up to 900 square feet at 10,230 BTU with 240V wiring. Actual heating performance decreases in poorly insulated or open outdoor spaces.
Does the Symmetry XT Lumina 42 work with 240V power?
Yes, optional 240V wiring increases output to as much as 3,000 watts and 10,230 BTU. Only use this configuration with an appropriate electrical connection.
Can I control this fireplace from my phone?
Yes, built-in WiFi supports control through the dedicated smartphone app. App operation requires a compatible device and a functioning network connection.
What flame colors does the Symmetry XT Lumina offer?
The fireplace includes yellow, orange, and red flame color presets with adjustable brightness and speed. Ember-bed colors are controlled separately for additional combinations.
What temperature range can I set?
The thermostat can be adjusted from 59°F to 82°F (15°C to 28°C). Do not use the fireplace as the sole heating system for an entire home.
What media comes with the fireplace?
The supplied product information lists real glass and glowing log media as included. Additional media kits are optional and sold separately.
Can the Symmetry XT Lumina 42 be recessed into a wall?
The product is designed for built-in recessed or semi-flush applications with concealed front-flow heating. Confirm the exact framing opening and clearances in the official installation manual before construction.
Is professional installation recommended?
Professional installation is recommended when framing, hardwiring, or configuring 240V power. Incorrect installation can prevent safe operation or reduce heating performance.
Create a Taller, Smarter Fireplace Feature Wall
The Amantii Symmetry XT Lumina 42 combines an 18-inch-tall viewing area, customizable flame effects, app and remote control, covered outdoor approval, and selectable heating output for modern residential and commercial projects.
