Modern Flames is one of the few electric fireplace brands that designs its own flame rendering technology in-house. Each product line uses a distinct system: HELIOVISION projection across the Orion series, and Hybrid-FX in the Landscape Pro, Redstone, and Spectrum Slimline lines. Choosing the right modern flames electric fireplace depends on your installation type, wall depth, room size, and the level of flame realism you need. This guide covers the full Modern Flames lineup carried at The Fireplace USA, what separates each series technically, and which models suit different spaces and installation scenarios.
Modern Flames uses two proprietary flame generation systems across its lineup, plus a conventional LED system in the entry-level Challenger.
HELIOVISION Flame Technology powers all three models in the Orion series: the Orion Slim, Orion Multi, and Orion Traditional. It projects flame visuals from the bottom of the firebox onto a dimensional backdrop, producing depth and a consistent viewing angle from anywhere in the room. The effect does not rely on a flat screen, so it reads clearly from wide angles, which makes it well suited to open-plan spaces and rooms where the fireplace is viewed from multiple positions. Each Orion model applies HELIOVISION in a different form factor, but the underlying flame technology is the same across all three.
Hybrid-FX Flame Technology is used in the Redstone, Spectrum Slimline, and both Landscape Pro models. It combines a physical LED flame element with a light projection layer and allows independent control of flame height, flame color, ember bed color, and downlight color. Each of those four variables is adjustable separately, which gives you more control over the specific look you want compared to systems that cycle through fixed presets.
The Challenger Series uses a conventional LED flame system with 10 color options and an RGB glacier glass ember bed. It is the entry-level line in the Modern Flames range, available in two sizes only.
Orion Slim supports both built-in recessed and surface wall-mount installation. The 6-5/16 inch depth fits standard 2x6 wall framing for a fully recessed install, and a wall-mount bracket is included for surface installation on any finished wall with no framing work required. Available in four sizes: 52", 60", 76", and 100". V2 models include a higher-contrast LCD display with deeper blacks and the TruWood lit log effect. The dual installation option makes this the most flexible model in the Orion lineup.
Orion Multi is the three-sided model in the Orion series, using HELIOVISION technology in a configuration that allows views from the front and both sides. It supports four installation setups: front-only view, left corner, right corner, or full bay with all three sides open. It can be wall-mounted on a finished surface, partially recessed into a 2x4 wall, or fully recessed into a wall with a minimum 9-inch depth. Available in five sizes: 52", 60", 76", 100", and 120". Suited to open-plan rooms, kitchen or living area peninsulas, or any space where sightlines come from more than one direction.
Orion Traditional uses HELIOVISION flame technology in a conventional firebox format: a taller rectangular opening with a driftwood log set, ember bed, and downlighting, rather than the wide linear format of the Slim and Multi. It is a built-in or slide-in unit only, with no wall-mount option. It installs as a new construction built-in or slides into an existing zero-clearance or masonry fireplace opening. Optional surround trim kits are available for insert applications where the existing opening is larger than the unit. Available in five sizes: 26", 30", 36", 42", and 54". Includes Wi-Fi app control with Alexa and Google Home compatibility and a 6,800 BTU heater.
Landscape Pro Slim uses Hybrid-FX flame technology and supports both built-in recessed and surface wall-mount installation. At 5.5 inches deep, it fits standard 2x6 wall framing for a fully recessed install. Smart controls include Wi-Fi, the Modern Flames app, and compatibility with Alexa and Google Home. Available in five sizes: 44", 56", 68", 80", and 96". A good fit when you want Hybrid-FX flame control and smart connectivity in a frameless, flush-wall appearance, without the Orion price tier.
Landscape Pro Multi uses Hybrid-FX and offers four viewing configurations: single-sided, front and left side, front and right side, or three-sided bay. Installation options include wall-mount on a finished surface, partial recess into a 2x4 wall, or full recess into a 12-inch wall for a clean-face flush look. Heater output runs from 5,000 to 10,000 BTU depending on the setting. Available in six sizes: 44", 56", 68", 80", 96", and 120". The combination of multi-sided viewing and variable output makes this suited to larger open-plan rooms and spaces where the fireplace anchors more than one seating area.
Redstone uses Hybrid-FX and is a built-in or slide-in insert. It can slide into an existing zero-clearance fireplace opening or install flush in a wall requiring 10 to 12 inches of depth. Flame height, flame color, ember bed, and downlight are each independently adjustable via the Hybrid-FX system. Available in five sizes: 26", 30", 36", 42", and 54".
Spectrum Slimline uses Hybrid-FX and supports both recessed and surface wall-mount installation. At 4-5/8 inches deep (4 inch body plus 5/8 inch trim), it fits both 2x4 and 2x6 wall framing. The 2x4 compatibility is the key differentiator: it opens up a fully recessed built-in installation in older construction and renovation projects where cutting back to 2x6 depth is not practical. Available in sizes from 50 to 100 inches wide.
Challenger Series uses a conventional LED flame system with 10 color options and an RGB glacier glass ember bed. Available in two sizes only: 50" and 60". Supports both recessed built-in and surface wall-mount installation. The entry point for the Modern Flames range.
Modern Flames differentiates through two things: two distinct proprietary flame systems and a product range wide enough to cover most installation scenarios from a single brand. HELIOVISION in the Orion series and Hybrid-FX in the Landscape Pro, Redstone, and Spectrum lines mean the step between price tiers involves a different technology, not just a size change or a different finish option.
On installation: several models support both recessed and surface wall-mount configurations. The Orion Slim, Orion Multi, Landscape Pro Slim, Landscape Pro Multi, Spectrum Slimline, and Challenger all allow wall-mounting on a finished surface without framing work. The Orion Traditional and Redstone are built-in or slide-in only. If you are working with an existing fireplace opening, the Orion Traditional and Redstone are the natural candidates. If you want no structural work at all, the wall-mount capable models cover the full technology range from entry-level Challenger up to the Orion Slim.
Heat output varies meaningfully across the lineup. The Orion Traditional delivers 6,800 BTU. Most single-sided Hybrid-FX models produce 5,000 BTU. The Landscape Pro Multi scales up to 10,000 BTU on its high setting. All models allow flames to run without the heater for year-round ambiance use. Browse the broader electric fireplace collection if you need to compare across brands on heat output or installation type.
Modern Flames produces pre-engineered wall systems and mantels that frame their fireplaces without requiring custom millwork. The Allwood Wall System for the Spectrum Slimline and the Allwood Wall System for the Orion Slim are both built to fit a standard 10-foot wall and create a finished entertainment wall appearance around the fireplace. The Floating Mantel for the Orion Multi provides a wall-mounted surround designed specifically for that model. These are optional but reduce finishing complexity significantly if you are not working with a custom cabinet maker.
The following models represent the range across installation types, flame technologies, and price points.
Modern Flames Orion Slim (from $4,279) is the first choice for a high-impact linear installation. HELIOVISION projection, built-in or wall-mounted, four sizes from 52 to 100 inches, V2 display available on most sizes. View the Orion Slim.
Modern Flames Landscape Pro Slim (from $2,299) delivers Hybrid-FX flame control and smart connectivity in a frameless built-in or wall-mount format. Five sizes from 44 to 96 inches. View the Landscape Pro Slim.
Modern Flames Orion Traditional (from $2,149) brings HELIOVISION flame technology in a conventional firebox format. Built-in or slide-in insert, five sizes from 26 to 54 inches. The right fit when a traditional firebox proportion suits the room or an existing opening sets the dimensions. View the Orion Traditional.
Modern Flames Redstone 36" ($1,499) offers Hybrid-FX flame control in a built-in or slide-in format. Five sizes from 26 to 54 inches, adaptable to most framed openings and existing zero-clearance fireplaces. View the Redstone 36".
Modern Flames Spectrum Slimline (from $1,599) uses Hybrid-FX and fits both 2x4 and 2x6 wall framing at 4-5/8 inches deep. Built-in or wall-mounted, available from 50 to 100 inches wide. The practical choice for shallow-wall installations. View the Spectrum Slimline.
The Orion Slim, Orion Multi, Landscape Pro Slim, Landscape Pro Multi, Spectrum Slimline, and Challenger Series all support surface wall-mount installation on a finished wall. The Orion Traditional and Redstone are built-in or slide-in only and require an existing opening or framed recess.
HELIOVISION is used exclusively in the Orion series (Slim, Multi, Traditional). It projects the flame image from the bottom of the firebox onto a dimensional backdrop, producing a wide-angle, consistent flame display. Hybrid-FX is used in the Redstone, Spectrum Slimline, and Landscape Pro series. It combines a physical LED flame with a projection layer and gives you independent control over flame height, flame color, ember bed color, and downlight color. The two systems produce a different visual character and are not interchangeable between product lines.
V2 applies to the Orion Slim, Orion Multi, and Orion Traditional. It replaces the standard display with a higher-contrast LCD that produces deeper blacks and a more refined TruWood log appearance. The HELIOVISION flame projection system is unchanged. V2 models are available alongside V1 across most sizes.
Yes. The Orion Traditional can slide into an existing zero-clearance fireplace or, with the optional surround trim kit, fit into a larger masonry opening. It cannot be wall-mounted on a flat surface. For new construction, it installs as a built-in framed opening.
A common proportional guideline is to size the firebox opening to 60 to 70 percent of the wall width it will occupy. On a 10-foot wall, a unit in the 72 to 80-inch range looks proportional. The Redstone and Orion Traditional each cover 26 to 54 inches. The Orion Slim covers 52 to 100 inches. The Landscape Pro and Spectrum lines extend up to 96 to 120 inches. Most residential configurations fall within that combined range.
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