Choose Dimplex when a longer warranty, a 240-volt heat option, or a realistic open-log set is the deciding feature. Choose Modern Flames when you want a covered-outdoor linear fireplace, independent flame/ember/downlight colors, or a traditional built-in firebox such as the Redstone.
Neither brand wins every room. A better comparison is model family against model family: Dimplex IgniteXL versus Modern Flames Landscape Pro Slim for linear walls, and Dimplex Revillusion versus Modern Flames Redstone for an existing or traditionally shaped fireplace.
Quick Verdict by Use Case
| Use case | Better starting point | Why | Reason to skip it |
|---|---|---|---|
| Premium indoor linear wall with 240 V heat | Dimplex IgniteXL | 120/240 V operation and five-year warranty | High purchase price |
| Covered outdoor fireplace look | Modern Flames Landscape Pro Slim | Listed for covered outdoor installation | Outdoor electric heat drifts quickly; buy for ambiance |
| Unused masonry fireplace | Dimplex Revillusion log set | Keeps brick visible and needs no new black firebox | Requires a deep opening |
| Traditional framed insert | Modern Flames Redstone | Squarer built-in proportions and layered lighting | Nearly 10 inches deep |
| Shallow 2x4 wall with no build-out | Neither model compared here | IgniteXL is partial-recess with trim; Landscape Pro Slim needs 2x6 | Look for a shallower model designed for 2x4 framing |
| Value-range budget | Neither premium linear model | Both linear choices here start far higher | Compare Touchstone or a carefully verified marketplace model |
Linear Comparison: IgniteXL 50 vs Landscape Pro Slim 44
| Feature | Dimplex IgniteXL 50 | Modern Flames Landscape Pro Slim 44 |
|---|---|---|
| Price band checked Sept. 16 | Higher premium | Premium |
| Face width | 50.25 in | 44.25 in starting size |
| Depth | 5.88 in | 5.5 in |
| Wall plan | Full recess in 2x6; partial in 2x4 with optional trim | Full recess in 2x6; not a 2x4 fit |
| Electrical | 1,500 W at 120 V; 2,500 W at 240 V | 1,500 W at 120 V |
| Heat | Up to 8,530 BTU at 240 V | About 5,000 BTU |
| Warranty | Five years | Two years |
| Outdoor use | Retailer lists outdoor among installations; confirm exact manual conditions | Rated for covered outdoor areas |
| Color control | Multi-Fire XD themes and prism mode | Flame, ember bed, and downlight adjust independently |
The IgniteXL’s practical advantage is not just its flame presentation. It can deliver more heat when wired for 240 volts, and its five-year warranty is meaningfully longer. That matters in an expensive built-in that will be surrounded by finished material.
The Landscape Pro Slim is the clearer choice when a covered patio is part of the plan or when separate lighting layers matter. Modern Blaze says it is 5.5 inches deep, available from 44 to 96 inches wide, hardwired, app controlled, and rated for covered outdoor spaces.
For either one, price the wall build, electrical work, finish material, and future service access. The appliance is not the whole project.
Check the Modern Flames Landscape Pro Slim
Traditional Comparison: Revillusion RLG20 vs Redstone 30
These products solve different versions of “traditional.”
The Dimplex Revillusion RLG20 is an open log set. Its 23.75-inch width, 19-inch height, and 12.5-inch depth sit inside an existing fireplace. A partially frosted acrylic flame panel lets the brick behind it remain part of the view. It includes a 1,500-watt ceramic heater, remote, and flame-only operation.
The Modern Flames Redstone 30 is a complete black firebox for a framed opening. It measures 29.25 inches wide, 18.88 inches high, and 9.88 inches deep. It has high and low heat, roughly 5,000 BTU output, a 120-volt plug, and layered flame, ember, and downlighting colors.
Choose Revillusion when the old fireplace is already the best-looking object in the room. Choose Redstone when the opening or wall needs a finished appliance face.
| Decision | Revillusion RLG20 | Redstone 30 |
|---|---|---|
| Existing brick stays visible | Yes | Mostly no |
| Finished black firebox | No | Yes |
| Depth required | 12.5 in | 9.88 in |
| Width | 23.75 in | 29.25 in |
| Price band checked | Lower | Midrange |
| Best room style | Traditional masonry fireplace | New traditional surround or framed firebox |
Check the Dimplex Revillusion RLG20
Check the Modern Flames Redstone 30
Flame Style and Room Style
Dimplex’s two examples pull in opposite directions: Revillusion uses a traditional open-log illusion, while IgniteXL uses edge-to-edge linear glass and acrylic ice media. Modern Flames also spans both shapes, but it leans hard into color control and contemporary linear installations across its premium ranges.
Don’t compare flame videos on a phone alone. Consider:
- Whether the room is traditional, transitional, or contemporary
- The viewing angle from the main seat
- Reflections in daylight
- Brightness at night
- Whether colored flames will actually be used
- The media bed you prefer after the novelty wears off
A restrained orange flame in the right surround often looks more convincing than a more elaborate effect in the wrong architecture.
Heat and Operating Cost
At 120 volts, both premium linear examples use up to 1,500 watts. At the June 2026 U.S. residential average of 18.34 cents per kWh, that is about 28 cents an hour at full heat.
The IgniteXL can reach 2,500 watts at 240 volts, about 46 cents an hour at that average rate. It also produces more heat. Whether that is useful depends on the room, insulation, and heating plan.
Read are electric fireplaces expensive to run? for the calculation at your local rate.
Warranty and the Built-In Risk
Warranty length matters more when an appliance is integrated into cabinetry, tile, or stone. Modern Blaze lists a five-year manufacturer warranty for the IgniteXL, two years for the Landscape Pro Slim, and one year for the Revillusion RLG20 and Redstone 30.
Warranty length is not the same as warranty quality. Before buying, read:
- Parts and labor coverage
- Who pays shipping
- Whether an authorized installer is required
- What installation records you must keep
- How the unit can be removed for service
Keep the manual, receipt, model number, serial number, and photos of the electrical and framing work.
The Buy-Neither Branch
Skip both brands for now when:
- The wall depth is unknown.
- A 2x4 wall cannot be built out and neither chosen model fits.
- The electrical plan depends on an extension cord.
- The feature wall would put the TV too high.
- The room only needs occasional ambiance and a premium built-in strains the budget.
- The existing fireplace has moisture, loose masonry, or an active gas connection.
A lower-cost surface-mounted fireplace, freestanding stove, or no fireplace at all can be the better room decision. Our wall-mounted vs recessed comparison shows the construction difference before you choose a brand.
Frequently Asked Questions
Is Dimplex better than Modern Flames?
Not across every category. Dimplex is the stronger starting point for the 240-volt IgniteXL option, longer IgniteXL warranty, and Revillusion open-log format. Modern Flames is stronger for the covered-outdoor Landscape Pro Slim and the traditional Redstone built-in format.
Which brand is better for a 2x4 wall?
Neither specific premium linear model here fully recesses in a standard 2x4 cavity without an accommodation. IgniteXL can partially recess with an optional trim; Landscape Pro Slim is intended for 2x6 framing. Compare shallower model families if the wall cannot be built out.
Which brand gives more heat?
The Dimplex IgniteXL can produce more heat when installed for 240-volt, 2,500-watt operation. At 120 volts, many models from both brands top out near 1,500 watts.
Which is better for an existing wood-burning fireplace?
The Dimplex Revillusion log set is the more direct fit when the masonry opening is deep enough and worth keeping visible. Modern Flames Redstone is better when you want a complete black firebox in a framed opening.
Which is less expensive?
It depends on the family. Revillusion costs less than Redstone in this comparison; Landscape Pro Slim starts below IgniteXL. Installation can reverse the apparent savings, so compare complete project cost.
Bottom Line
Dimplex earns the edge for premium indoor heat flexibility, the five-year IgniteXL warranty, and a convincing open-log solution for existing masonry. Modern Flames earns the edge for covered-outdoor linear installations, layered color control, and a traditional finished firebox.
Choose the model family that matches the wall and room. If neither fits the framing, power, budget, and future service plan, there is no brand winner yet.
