Wall Mount Linear Electric Fireplace: 48 vs 60 vs 72 Inch Sierra Compared

For most living rooms, a wall mount linear electric fireplace in the 60-inch size is the safest pick, with 48 inches for tighter walls and 72 inches for long, open walls. The Dimplex Sierra comes in all three sizes, and the size you choose changes the look of the wall, not the heat output. Here is how the Dimplex linear electric fireplace sizes compare so you can match one to your room.

What Is a Wall Mount Linear Electric Fireplace?

A wall mount linear electric fireplace is a wide, shallow electric unit that hangs on the wall like a TV, recesses into the wall, or sits on a tabletop stand. The Sierra is 19.5 inches tall and 5 inches deep, which is why it fits where a traditional firebox cannot. It plugs into a standard 120V outlet, so there is no gas line, no vent and no chimney.

That is the main reason buyers choose this style over a built-in firebox. If you are still deciding between electric and gas, read our electric fireplace vs gas fireplace comparison first. If you want a unit framed into the wall with a full surround, browse the built-in and insert electric fireplace collection instead. For a vapor-flame alternative that needs no venting, see our water vapor fireplace guide.

Dimplex Sierra 48 vs 60 vs 72 Inch: Size and Price Compared

The three Sierra models share the same flame effects, ember bed options and heater. Only the width, weight and price change, as the table below shows (specs from each product page, prices as of October 26, 2026).

Does a Bigger Linear Electric Fireplace Heat More?

No. All three Sierra sizes use the same 1,400-watt heater rated at 4,777 BTU, so the 72-inch model does not warm a room faster than the 48-inch model. Watts convert to BTU at about 3.412 BTU per watt, which is how 1,400W lands at roughly 4,777 BTU.

Treat the heater as supplemental heat for the room you are sitting in, rated for spaces up to 1,000 square feet. Pick the size for the wall and the look, and the heat takes care of itself. You can also run the flames and ember bed with the heater off, which is useful in summer.

How to Choose a Wall Mount Linear Electric Fireplace Size for Your Wall

Choose a fireplace that is about two-thirds to three-quarters of the width of the sofa, console or media wall beneath it. That is my recommendation for balance, not a code requirement, and it keeps the unit from looking lost or crowding the wall.

Choose the 48-inch for bedrooms, home offices, small living rooms and walls under about 8 feet wide. Choose the 60-inch for a typical 84- to 90-inch sofa wall; it is the best balance of presence and price. Choose the 72-inch for great rooms, long feature walls and open-plan spaces where a smaller unit would disappear.

Wall Mount vs Recessed vs Tabletop: Which Installation Works Best?

Wall mounting is the easiest, recessing gives the cleanest look, and the tabletop stand needs no wall work at all. The Sierra supports all three.

For wall mounting, find the studs and mount into them. The 60-inch weighs 72 lbs and the 72-inch weighs 77 lbs, so do not rely on drywall anchors. For recessing, follow the rough-in dimensions in the owner's manual linked on each product page before you frame the opening. Because it is plug-in, no hardwiring is needed, but at 11.7 amps the unit should have an outlet on a circuit that is not shared with other heavy loads. Have an electrician confirm your circuit if you are unsure.

Flame, Ember Bed and Color Options on the Sierra

Every Sierra includes three interchangeable ember bed media: crystals, logs and pebbles. Crystals read as modern, logs read as traditional, and pebbles sit in between, so you can change the look without buying a different unit.

You can switch between eight flame and ember bed colors and light the flames and ember bed separately. Touch-screen controls and a multi-function remote handle the flame effects and the thermostat, and the automatic room temperature control holds a steady setting. Color options matter more than they sound: a warm orange flame suits a wood-and-stone room, while a cooler blue ember bed suits a white, minimalist wall.

Common Mistakes When Buying a Linear Electric Fireplace

Buying by heat instead of width. Since all three Sierra sizes produce 4,777 BTU, the larger unit is a design choice, not a heating upgrade. If you need real whole-room heat, plan for a dedicated heating source and treat the fireplace as a supplement.

Mounting too high. A linear fireplace reads best with the flame near eye level when you are seated, not above head height like a TV. Decide the height before you cut or frame anything, and mount the unit where the front-vent heat is not blocked by furniture or decor.

Ignoring weight and wall type. At 72 and 77 lbs, the 60- and 72-inch models need studs or proper blocking. The 48-inch at 46.55 lbs is easier for a two-person install.

Which Size Fits Your Room? Quick Recommendations

If you want one answer, buy the Dimplex Sierra 60-inch (SIL60) at $1,154.99. It suits most living rooms and keeps the 5-inch profile flush enough for a clean wall.

On a tighter budget or a smaller room, the Dimplex Sierra 48-inch (SIL48) at $849.99 is the value pick. For a long wall or a great room, step up to the Dimplex Sierra 72-inch (SIL72) at $1,419.99. Per the shipping terms on each product page, items under 50 inches wide and 100 lbs ship by small package, while wider units ship by freight carrier.

Build Your Fireplace Wall

Compare more sizes and styles in our wall mount electric fireplace collection, browse every unit in the electric fireplace collection, or see the full Dimplex brand collection. Not sure whether a linear unit is right? Our electric fireplace buying guide walks through sizing, heat output and install types. Orders over $299 ship free in the continental US, though certain exclusions apply, and our team is available at support@urbansupplyinc.com if you want help choosing a size.

About the author: Jacky Chan is the founder of Urban Supply Inc, an online retailer of home appliances, fireplaces, power equipment and outdoor living products.

Related reading: Electric Fireplace Buying Guide · Electric Fireplace vs Gas Fireplace · Fireplace Insert Buying Guide · Water Vapor Fireplace Guide