The best linear electric fireplaces

Fifty inches is where a linear fireplace stops looking tentative and starts looking deliberate. Below about 45 inches the proportions fight the shape — a short linear unit reads as a letterbox rather than as a feature — and the Sideline 50 is the reference point most competitors get measured against.

Recessed or surface-mounted, from a manufacturer whose entire catalog is fireplaces. Same 1,500 W ceiling as everything else: about 5,118 BTU per hour and 27.5 cents an hour to run.

Cons: 5.5 inches deep, so a flush install means building the wall out. And Touchstone publishes less numeric specification on its collection pages than mass-market retailer listings do, so confirm dimensions before framing.

What it does not do: Recessing needs a framed cavity. Surface-mounting it works but leaves the unit standing proud of the wall, which reads very differently in a small room.

Linear fireplaces live or die on whether they read as an opening or as a screen, and the bezel is what decides that. Your eye has decades of training on what a frame around a glowing rectangle means, and it is not "fire".

The Elite sits above the standard Sideline 50 in the range and below the Elite Pro, at the same 50-inch width.

The con is worth stating bluntly because the manufacturer's own range makes it obvious: the heater is the identical 1,500 W as the cheaper Sideline 50. You are paying for presentation. That is legitimate — it is the only thing that varies in this category — but nobody should expect a warmer room for it.

What it does not do: The heater is the same 1,500 W ceiling as the cheaper Sideline 50. The extra money buys the glass front and the flame presentation, not warmth.

Proportion is the real decision in this shape, and it scales with the wall rather than the room. On a wall of 12 feet or more a 50-inch unit starts to look undersized, and 60 is the next honest step.

Published specs are 60 inches wide by 21.5 high by 5.5 deep, a 5,000 BTU per hour figure, a 400 square foot rating, 120 V plug-in or hardwired, two heat settings and five flame settings in orange, blue or both, with WiFi and Alexa and Google Home support.

Cons: the same 5.5-inch depth, and a 60-inch opening crosses two or three studs so a flush install needs a header. Note also that Touchstone publishes 5,000 BTU here against 5,118 for the Elite — a reporting difference of about 2%, not a performance one.

What it does not do: At 5 1/2 in deep it does NOT fit flush in a standard 2x4 stud bay — you need furring, a 2x6 wall or a built-out chase. Logs and crystals are a separate purchase.

This is the value argument in the shape, and the depth figure is what makes it. At 3.85 inches published — against 5.5 for the Sidelines — it is the one linear unit on this page that a standard 2x4 wall will take nearly flush.

Published as 60 by 18.1 by 3.85 inches, 750 W low and 1,500 W high at 120 V and 60 Hz, a 400 square foot rating, 12 flame colors and 12 ember-bed colors across five speeds and five brightness levels, touchscreen and remote, one-year warranty.

Cons: the one-year warranty is the shortest here, and the manufacturer's own listing references 2x6 framing despite the 3.85-inch depth figure — confirm the rough opening with the brand before cutting. Twelve flame colors is also more configuration than anyone uses; you will pick one.

What it does not do: No mantel and no surround. The published depth is 3.85 in, but the manufacturer's own listing also references 2x6 framing — confirm the rough-opening requirement with R.W.FLAME before you cut a 60-inch hole in anything.

Touchstone lists the Forte 40 between the Sideline 36 and the Sideline 45 on width, as a wall-mount or recessed linear unit.

It earns a place here because short walls exist and people still want the modern look. At 40 inches it is a band of flame rather than a letterbox, which the 36 is starting to become.

The honest con is a question rather than a defect: below about 45 inches, a traditional insert with a visible fire and a raised log frequently looks better in the same space than a short linear unit does. If your wall is genuinely narrow, compare against the insert roundup before committing to the shape.

What it does not do: No mantel, no surround, no log set. It is a band of flame in a wall, which is either exactly what you want or nothing like it.