A built-in electric fireplace installs flush with or recessed into your wall, giving you the look of a custom installation without the need for gas lines, venting, or chimney work. If you're working through a built-in electric fireplace buying guide for the first time, the core decisions are: which type of unit fits your wall and room, what size makes sense, how it gets power, and which brands suit your priorities. This guide walks through each of those questions with specific product references from brands carried at The Fireplace USA.
Built-in units fall into distinct categories based on shape and viewing configuration. These choices affect installation complexity, how the unit integrates with your room, and what the fire looks like from different positions in the space.
Linear fireplaces are wider than they are tall, typically ranging from 40 to over 100 inches wide, with a landscape-oriented viewing window. They're the dominant format in contemporary and transitional interiors and are common in new construction and renovation projects. The Dimplex Ignite XL, Amantii Panorama series, and Modern Flames Landscape Pro Slim are all linear built-in formats.
Traditional firebox shapes use taller, narrower proportions that sit closer to the dimensions of a wood-burning masonry fireplace. They work well in more classic interiors and pair naturally with a mantel surround. The Dimplex Revillusion line and Simplifire Inception are traditional firebox formats.
Most built-in electric fireplaces are single-sided: one glass face, installed against a wall. Multi-view or 3-sided models add glass panels on the left and right so the fire is visible from three angles. These are used as room dividers or in corner situations where the fireplace anchors two spaces.
The viewing configuration on 3-sided electric fireplaces is set by optional glass panels that ship with the unit. The Amantii TRU-VIEW and Modern Flames Landscape Pro Multi both offer flexible panel options, letting you set them up as single-sided or 3-sided depending on the installation. A full index of 3-sided options is available in our 3-sided electric fireplaces collection.
Built-in electric fireplaces are sized by the width of their viewing opening. Common widths run from 30 inches to 100 inches or more. A practical rule of thumb: the fireplace width should be roughly two-thirds of the wall width it's centered on, or roughly matched to the width of the furniture grouping in front of it.
Depth is equally important and often overlooked. Most built-in units require a framed wall cavity. Depths range from about 4.5 inches for ultra-slim models like the Amantii Panorama XS to around 12 inches for deeper units like the Amantii Panorama DEEP. If you're installing into a standard 2x4 stud wall (approximately 3.5 inches of usable depth), you need a slim-profile model or a surface-mounted option. The Modern Flames Orion Slim and Simplifire Allusion Slim are both designed to fit within a 2x4 stud wall without wall modification.
Each built-in electric fireplace specifies a required rough opening: the framed width and height that the unit slides into. These tolerances are tight, typically within half an inch, so the framing needs to be accurate before drywall goes up. Check the manufacturer's installation manual before framing.
Overhead clearance requirements to combustible materials (mantels, floating shelves, cabinetry) vary by model and are specified in the installation manual. Do not rely on general estimates here.
Most built-in electric fireplaces run on standard 120V power and include a cord that plugs into a dedicated outlet located behind or near the unit. This is the simpler option and adequate for supplemental heat in smaller to mid-sized rooms.
Larger and higher-output models support 240V hardwired connections, which increase heat output substantially. A 240V built-in electric fireplace can function as a primary heat source for a medium-sized room. The Modern Flames Orion Slim supports optional 240V hardwiring. If you go this route, you need a dedicated circuit installed by a licensed electrician.
One important feature to confirm regardless of voltage: whether the heating element and flame effect operate independently. On most modern built-in electric fireplaces, they do, which means you can run the visual effect without heat during warmer months.
Standard 120V built-in electric fireplaces produce around 4,700 to 5,000 BTUs, equivalent to a 1,400-watt heater, which is adequate for supplemental heat in spaces up to roughly 400 square feet. 240V models vary by unit but can cover significantly more.
When comparing models, look at three things: the manufacturer's stated heating coverage in square feet, whether the unit has thermostat control (basic on/off versus programmable setpoints), and whether it supports app or voice control. Amantii Panorama and Symmetry Bespoke units, Dimplex Ignite XL models, and Modern Flames Orion series fireplaces all offer Wi-Fi and app control with voice assistant support.
Amantii's built-in lineup spans 30 to 88 inches across four distinct depth profiles: the Panorama DEEP, SLIM, XS (extra slim), and XT (extra tall). Most Amantii Panorama series units are rated for indoor and outdoor use, which adds flexibility for covered patio installations. The TRU-VIEW series covers 3-sided configurations from 40 to 72 inches. Browse the full built-in electric fireplaces collection to compare available sizes.
Dimplex offers two substantially different built-in technologies. The Dimplex Ignite XL uses LED flame projection for a modern linear look and is available from 50 to 100 inches wide. The Revillusion series uses rear-projection to produce a more realistic log fire effect in a traditional firebox shape, available from 24 to 42 inches. If your room calls for a log-look fireplace rather than a contemporary linear format, the Revillusion is the more convincing option in this category.
Modern Flames built-in fireplaces are notable for their slim installation depth and Hybrid-FX flame technology, which combines an LED backdrop with a physical fuel bed for improved depth and realism. The Modern Flames Orion Slim fits in a 2x4 stud wall without modification and supports 240V hardwiring. The Landscape Pro Slim and Landscape Pro Multi are designed specifically for under-TV installations, with a low-profile frame and side-panel options for 3-sided viewing.
Simplifire's Allusion Platinum is available in 50, 60, and 72-inch widths with 13 flame and ember color combinations. It can be fully recessed, partially recessed, or surface-mounted, and accepts plug-in or hardwired connections. The Allusion Slim fits entirely within a standard 2x4 wall cavity. Simplifire's traditional format, the Inception, is a built-in unit designed to fit an existing masonry or prefab firebox opening.
Standard 120V plug-in models are DIY-accessible if you're comfortable with basic carpentry (framing the rough opening, patching drywall, finishing). 240V hardwired models require a licensed electrician for the circuit work. Check your local permit requirements before starting any in-wall installation, as some jurisdictions require an electrical permit even for plug-in installations if the outlet is new.
No. Electric fireplaces produce no combustion byproducts, so no chimney, flue, or exterior vent is required. This makes them viable for interior walls in any room, including bedrooms, where gas units are often not permitted.
Entry-level built-in electric fireplaces start around $600 to $900 for a 40-inch 120V unit. Mid-range models with app control and improved flame technology run $1,200 to $2,500. Large format or 240V units (72 inches and above) typically run $3,000 to $6,000 or more depending on brand and configuration.
Start with the wall space and the furniture grouping in front of it. A fireplace that's roughly two-thirds the width of the wall it's centered on tends to look proportional. Also check the installation depth against your wall construction before buying: a unit that requires a 9-inch-deep cavity won't fit in a 2x4 stud wall without framing modifications.
Browse our full selection of built-in electric fireplaces to compare models by size, brand, and installation depth.
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