Product images: Amazon listings

Dimplex Prism 50" Wall-Mount Review

Name: Dimplex Prism 50" Wall-Mount
Brand: Dimplex
SKU: B00UMJ6H9W

7.6Very good · out of 10#5 of 5 in our Wall-Mounted Electric Fireplaces ranking

On paper, the Dimplex Prism 50" Wall-Mount gets the important things right: 50 inches of fire across the wall, 1,230 watts of supplemental heat and a flame that runs without the heat. It made our top 5 wall-mounted electric fireplaces: a great match for the glow of a fire without a chimney or a gas line.

Variants of this model

Each variant has its own page with its price and specs.

Dimplex Prism 34" Wall-Mount · 34 Inch / Black · 7.3/10

Price$1,059.99Price on Sep 30, 2026 · may have changed

Check the price on Amazon ↗Affiliate link · price and stock on Amazon

Compare side by side ↗

Specifications

Brand	Dimplex
Category	Built-in & wall-mounted inserts
Stated width	50 in
Heater output	1230 W
Supply voltage	120 V
Installation type	Recessed (in-wall)
Coverage (stated)	Up to 400 sq ft
Controls	Remote
Flame without heat	Stated in the listing
Buyer reviews	86 · 4.3/5
ASIN	B00UMJ6H9W

Full listing title: Dimplex Prism 50 Inch Wall-Mount Linear Electric Fireplace - Black, 1230W

Listing evidence

Stated width	50 Inch Exact listing
Heater output	1230W Exact listing
Supply voltage	120-volt Exact listing
Installation type	Wall-Mount Exact listing

Updated October 2026

Exact listing, ASIN B00UMJ6H9W

Rating from a published formula

Compared with similar inserts

The two picks next to it in our wall-mounted electric fireplaces ranking, with their rating and a dated price.

Compare side by side ↗

Dimplex Prism 50" Wall-Mount

7.6Very good · out of 10$1,059.99 Price on Sep 30, 2026 · may have changed

Stated: 50 in wide · 1,230 W heater · Recessed (in-wall)
86 buyer reviews
Built-in & wall-mounted inserts

This product ↑

Dimplex Sierra 60" Wall-Mount

8.5Very good · out of 10See current price ↗

Stated: 60 in wide · 1,400 W heater · Recessed (in-wall)
386 buyer reviews
Built-in & wall-mounted inserts

See the review ↗

Westinghouse 60" Wall/Recessed

8.6Very good · out of 10$799 Price on Sep 30, 2026 · may have changed

Stated: 60 in wide · 1,500 W heater · Recessed (in-wall)
358 buyer reviews
Built-in & wall-mounted inserts

See the review ↗

Heater output, per the listing

The heat the listing states, next to a 400 sq ft coverage claim. Plenty to take the chill off the room you sit in; how far it reaches depends on your insulation, windows and ceiling, and our supplemental heat planner turns your room into a rough answer.

Why it made our list

What changes in your evenings

50 in wide, per the listing. Wide enough to be the focal point of a living-room wall. Check in the installation drawing whether the figure is the frame or the viewing area, then hold it against your wall cavity.

1,230 W, up to 400 sq ft claimed. Supplemental heat for the room you sit in: it takes the edge off a cold evening while the furnace stays turned down. The 400 sq ft figure is the seller's; real coverage depends on your insulation, windows and ceiling. Our supplemental heat planner puts it in numbers for your room.

Flame without heat. The heater and the flame run separately, so you can have the glow in July without warming the room. The fireplace earns its place all year, not only in January.

Living room or bedroom?

For the living room, 50 inches of fire are wide enough to anchor a big wall. A 400 sq ft coverage claim is pitched at a main room, not a box room.

For a bedroom or a study, the flame runs without heat, so it can glow on a warm night too.

On balance it is a living-room centrepiece that can also do a smaller room, not the other way round.

Great for you if…

You want the chill off one room on cold evenings
You want the glow all year, heat or no heat

Skip it if…

Your wall can't give it 50 in plus the clearances in the manual
You want it to replace your heating: it is supplemental heat for one room
Star ratings come first for you: 4.3/5 is below the 4.6 average of this ranking
You simply want our top pick: that's the Xbeauty 60" Recessed and Wall Mounted (9.3/10)

Size, power and what's in the box

What the Dimplex Prism 50" Wall-Mount listing names:

50 in wide, 7 in deep
Recessed or wall-mounted
Heater: 1,230 W
120 V supply
Hardwire option mentioned
Remote

Check the opening, the depth and the outlet against your wall before you order.

Price and cost per inch of width

$1,059.99 Price on Sep 30, 2026 · may have changed

At the price on Sep 30, 2026, each stated inch of width costs about $21. That puts it around the middle of the 117 inserts we have a price for.

Cost per inch is only a rough yardstick: the heater, the flame options and the build count as much as the width.

The button opens the exact listing (ASIN B00UMJ6H9W), where today's price, stock and seller apply. Sizes and bundles of the same family often sit at different prices.

A better fit for your room?

Want a wider fire for a bigger wall? The Touchstone Sideline 60" Smart (9.5/10) states 60 in.

Short on wall space? The Innoflame 36" Insert with Log Set (7.7/10) is 36 in wide, per its listing.

Want to run it from your phone? The LegendFlame 60" Smart Wall/Recessed (8.8/10) works with Alexa, per its listing.

Our take

The verdict

On the Dimplex Prism 50" Wall-Mount, 50 inches of fire across the wall is what caught our eye, and 1,230 watts of supplemental heat doesn't hurt either. Only 86 buyers have rated it so far (4.3/5), so treat the score as an early read. Where it falls short: its 4.3/5 buyer average sits under the 4.6 of this ranking. We'd pick it if you want the chill off one room on cold evenings; otherwise, put it next to the Dimplex Sierra 60" Wall-Mount first.

Check the price on Amazon ↗Affiliate link · price and stock on AmazonSee the wall-mounted electric fireplaces ranking →

Living with it

Delivery day

A big, flat box with glass inside: open it with two people and check the front before the cardboard goes out.

The first evening

Try the flame at a few brightness settings; lower often looks more real at night. The 1,230 W heater takes the chill off the room you sit in.

Day to day

The remote on the sofa arm, and a quick dust of the glass now and then. Our maintenance guide has the rest.

Summer

Heater off, flame on: the glow stays on the wall in July without warming the room.

What buyers say

Buyers give it 4.3/5, a solid record, below this ranking's 4.6 average. 86 reviews is still a modest pile, so a handful of new ones can move it.

The numbers

Buyer rating: 4.3/5
Reviews: 86
This ranking's average: 4.6/5

The one thing we'd check first

Before you order the Dimplex Prism 50" Wall-Mount: check your wall, because the 50-inch figure has to match your opening, and a listing width can mean the frame or just the viewing area.

Before you buy

Your wall

Draw the opening on the wall with painter's tape at the real size, step back, and check it against the installation drawing. Our recessed installation guide lists the clearances to ask about.

The outlet

120 V, per the listing. Pick the outlet before you pick the finish: a free one close by, nothing heavy on the same circuit, and no extension cord. Our power requirements guide lists the questions to ask.

Heat for your room

1,230 W stated. Treat it as supplemental heat for one room. Our supplemental heat planner turns your square footage into a rough answer.

Delivery and install

Glass-fronted inserts are big, flat boxes: plan two people for the unboxing, and decide early who frames the wall. Our built-in vs wall-mounted guide weighs recessed against wall-mounted.

How it compares

How the Dimplex Prism 50" Wall-Mount stacks up against the closest alternative in our ranking, the Dimplex Sierra 60" Wall-Mount.

Criterion	Dimplex Prism 50" Wall-Mount	Dimplex Sierra 60" Wall-Mount
Our rating	7.6/10	8.5/10
Width	50 in	60 in
Heater	1,230 W	1,400 W
Coverage claim	400 sq ft	1,000 sq ft
Buyer reviews	86 · 4.3/5	386 · 4.5/5

Pick the Dimplex Sierra 60" Wall-Mount if you want our higher-rated option (8.5/10), with a wider unit (60 in) and more stated heat (1,400 W).

Compare side by side ↗See the Dimplex Sierra 60" Wall-Mount review →

The score in detail

How we rated it

Our score: 7.6/10

Buyer rating (45%)

38.7 / 45

4.3/5 average

Review volume (35%)

18.4 / 35

86 buyer reviews

Documented specifications (20%)

18.8 / 20

94/100 listing documentation score

Our rating is an evidence index on a 0–10 scale. It is not a buyer star rating.

Buyer rating (45%): the captured buyer average for this listing, damped when there are fewer than 50 reviews.
Review volume (35%): more reviews mean more reliable evidence, on a logarithmic scale up to 5,000 reviews.
Documented specifications (20%): how completely the exact listing documents the attributes that matter.

Our editors' view of how it compares with the other models we rate counts too. A commission never does. Read the full methodology.

Read the methodology →

Frequently asked questions

Is the Dimplex Prism 50" Wall-Mount any good?

We rate it 7.6/10 (very good), #5 of 5 in our wall-mounted electric fireplace ranking. It is based on 86 buyer reviews averaging 4.3/5 and the specifications stated in the listing.

What size and heater output does the Dimplex Prism 50" Wall-Mount state?

Its listing states a 50-inch width, a 1,230 W heater output, a 120 V supply and recessed (in-wall) installation. Those are the maker's figures, so check in the installation drawing whether the width means the frame, the firebox or the opening. Our supplemental heat planner puts 1,230 W in context for your room.

What power supply does the Dimplex Prism 50" Wall-Mount need?

The listing states 120 V and a 1,230 W heater. Read the supply, plug and circuit conditions on the exact listing and in the manual before you order, and never run a heater on an extension cord or a shared power strip. Anything beyond an existing standard outlet, hardwiring or 240 V included, is a job for a licensed electrician.

What do you get with the Dimplex Prism 50" Wall-Mount?

Its listing states a 50-inch width, a 1,230 W heater and a flame that runs without the heat. Those are the seller's figures; for how real the flames look in a living room and how loud the fan runs at night, the buyer reviews are the better guide.

What should I check before ordering the Dimplex Prism 50" Wall-Mount?

Your wall: draw the opening on the wall with painter's tape at the real size, step back, and check it against the installation drawing. Our recessed installation guide lists the clearances to ask about. The outlet: 120 V, per the listing. Pick the outlet before you pick the finish: a free one close by, nothing heavy on the same circuit, and no extension cord. Our power requirements guide lists the questions to ask. Heat for your room: 1,230 W stated. Treat it as supplemental heat for one room. Our supplemental heat planner turns your square footage into a rough answer. Delivery and install: glass-fronted inserts are big, flat boxes: plan two people for the unboxing, and decide early who frames the wall. Our built-in vs wall-mounted guide weighs recessed against wall-mounted.

Where can I buy the Dimplex Prism 50" Wall-Mount?

We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.

Keep comparing

If the Dimplex Prism 50" Wall-Mount hasn't sold you yet, see where it ranks, read the guides that feature it or browse all built-in & wall-mounted inserts.

Where it ranks

Best Wall-Mounted Electric Fireplaces in 2026 →

Read this before you buy

Built-in vs wall-mounted electric fireplaces →Planning a recessed electric fireplace →Electric fireplace power requirements explained →

Built-in & wall-mounted inserts ↗All Dimplex products Comparison tool All product reviews