Best Electric Fireplace Inserts (2026): 7 Firebox Picks

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The best electric fireplace insert is the one that actually fits the firebox you already have. That sounds obvious, but most electric fireplaces sold today are wall-mount or in-wall units built for 2×6 framing, not for a masonry opening with a sloped back and a hearth in front. This page narrows the field to units that can sit inside, or close off, an existing fireplace: full-front inserts with trim, log sets that sit on the hearth floor, and a few recessed boxes shallow enough to slide into an opening. Every pick runs on a standard 120V outlet, and the buying guide covers how to measure, where the cord goes, and what to do about the chimney above a fireplace you no longer burn.

Part of our Heating, Cooling & Ventilation guide — start there for the full picture →

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How we compared: we compared 18 current Amazon listings returned for electric fireplace inserts and kept the 7 that are genuinely suited to an existing firebox or fireplace opening, judging each on what its listing states: overall and opening dimensions, heater wattage, stated heating area, power and wiring options, safety certifications named and warranty. Wall-mount linear units built for stud walls were set aside. We did not lab-test any of these units or handle them. Prices and availability change often, so check the current listing before buying.

Quick picks: the best electric fireplace inserts for an existing firebox

Product	Best for	Key features	Price	Buy
PuraFlame Western EF45D	Best overall for a masonry firebox	States firebox and overall dimensions Flat bottom sits on the hearth floor 750/1500W, plug-in 120V	$389.99as of Oct 23, 2026 4:08 am GMT+0000	Buy now →Check current price
Duraflame DFI030ARU	Best log set for an open hearth	Infrared heater, fully assembled About 20.5 in wide, 13.6 lb Built for existing fireplaces	$149.99as of Oct 23, 2026 4:08 am GMT+0000	Buy now →Check current price
PuraFlame EF512A	Best log set for wide openings	27 in wide log set 6 flame colors, 5 brightness levels Timer from 0.5 to 9 hours	$279.99as of Oct 23, 2026 1:59 pm GMT+0000	Buy now →Check current price
Innoflame PD20-20	Best for small or shallow fireboxes	11.7 in tall, 11 lb CSA certification named 64 to 82 F thermostat	$109.99as of Oct 23, 2026 4:08 am GMT+0000	Buy now →Check current price
Touchstone Forte 80006	Best for a hardwired install	6 ft cord or hard-wire ready Max draw of 12 amps stated Fits an existing fireplace opening	$549.00as of Oct 23, 2026 1:19 pm GMT+0000	Buy now →Check current price
VEVOR SDF-35Q10P	Best shallow recessed box	35 in wide, 5.9 in deep 9 flame colors, 8 hour timer Overheat shut-off	$212.90as of Oct 23, 2026 4:08 am GMT+0000	Buy now →Check current price
Innoflame RV23V80M-MT1	Best for a narrow framed opening	23 x 19.75 in front opening CSA and UL listing named Cool-touch front glass	$125.99as of Oct 23, 2026 4:08 am GMT+0000	Buy now →Check current price

Prices are Amazon’s listed prices as of the time shown and change often; check Amazon for today’s price. As an Amazon Associate we earn from qualifying purchases.

The 7 picks, compared listing by listing

1. PuraFlame Western EF45D — Best Overall for a Masonry Firebox

Best overall for a masonry firebox

Why we like it

• Publishes both overall size and firebox body dimensions
• Flat bottom rests directly on the hearth floor
• Three-sided brick-look interior suits a traditional opening
• Flame runs with or without the heater

PuraFlame Western EF45D — 33 in class insert, 32 1/8 x 25 9/16 x 7 51/64 in body, 750/1500W, 120V plug-in, remote, 1-yr limited warranty

The Only Listing That Gives a Separate Set of Firebox Body Dimensions

Fit is the whole game with a firebox insert, and this is the one listing among the 18 that separates the overall front dimensions (including the trim that covers the masonry edge) from the dimensions of the box that actually slides into the opening. That second number is what you compare against your tape measure: the body is about 32 1/8 in wide, 25 9/16 in high and just under 8 in deep, while the trim reaches about 35 in by 27 in to hide gaps around the brick.

The flat base is the other reason it leads. The listing says the unit can sit right on the floor of the firebox, which suits a masonry hearth where you cannot fasten anything. Like most units here it rates itself as supplemental heat for up to 400 sq ft and says plainly it is not a main heat source.

The trade-offs are weight and wiring. At roughly 47 lb it is the heaviest of the true firebox picks, and the listing is explicit that it cannot be hard-wired, so you need an outlet within reach of the cord. The listing does not state the cord length or name a safety certification, and the warranty is one year.

Check PuraFlame Western EF45D price on Amazon

2. Duraflame DFI030ARU — Best Log Set for an Open Hearth

Best log set for an open hearth

Why we like it

• Written specifically for use inside an existing fireplace
• Arrives fully assembled; place it and plug in
• Infrared heater with separate flame and heat controls
• Compact 20.5 in footprint fits most hearths

Duraflame DFI030ARU — infrared log set, 20.5 x 8.66 x 12.6 in, remote, independent flame/heat, 13.6 lb, 1-yr limited warranty

The Only Listing Claiming Coverage Beyond 400 Square Feet

Fourteen of the 18 listings on the shelf put a number on heating area, and thirteen of those say 400 sq ft. The Duraflame is the lone exception, claiming warmth for up to 1,000 sq ft from its infrared heater. Treat that as a marketing ceiling, not a design figure: a plug-in heater on a standard household circuit is limited in output, and an open firebox with a leaky damper behind it can pull warm air up the flue.

What makes it a strong firebox pick is that the listing is written for exactly this job. It says all you need is an existing fireplace and an outlet, it ships assembled, and the flame can run with the heat off for ambiance in summer.

The listing does not name a safety certification or give the heater wattage, and it does not say how long the cord is.

Check Duraflame DFI030ARU price on Amazon

3. PuraFlame EF512A — Best Log Set for Wide Openings

Best log set for wide openings

Why we like it

• Widest log set on the shelf at 27 in
• Six flame colors with five brightness levels
• Thermostat and timer shown on an LED display
• Crackling sound option for realism

PuraFlame EF512A — 27 in log set, 750/1500W, 60–82 F thermostat, 0.5–9 hr timer, 120V polarized plug, 18.3 lb

The Widest of the Three Log Sets on the Shelf

Three listings on the shelf are true log sets that sit on the hearth floor: the Duraflame and the Innoflame PD20-20 at about 20.5 in wide, and this PuraFlame at 27 in. The extra 6.5 in here fills more of a typical opening,.

It also brings the most control detail of the log sets. The listing gives a thermostat range, a timer that runs from half an hour to nine hours, and an LED readout of the settings, plus six flame colors and a crackling sound.

Depth is the number to check. At about 9.8 in deep it is the deepest log set here, so a shallow or sharply sloped firebox may not seat it flat. The listing does not name a safety certification or a cord length.

Check PuraFlame EF512A price on Amazon

4. Innoflame PD20-20 — Best for Small or Shallow Fireboxes

Best for small or shallow fireboxes

Why we like it

• Lowest profile on the shelf at 11.7 in tall
• Lightest stated weight at 11 lb
• Only log set that names a safety certification
• No assembly; plug in and place

Innoflame PD20-20 — 20.5 x 8.5 x 11.7 in log set, 1400W, 64–82 F thermostat, 9-hr timer, CSA, 11 lb

The Lowest, Lightest Unit and the Only Log Set Naming a Certification

Among the listings that state a weight, nothing on the shelf is lighter than 11 lb, and nothing states a lower height than 11.7 in. That combination makes it the easiest unit to fit under a low lintel or into a firebox that is only 9 or 10 in deep at the floor. It is also the only one of the three log sets whose listing names a safety certification (CSA), along with automatic overheat protection.

The heater is rated at 1400W rather than the 1500W most inserts list. That leaves a little headroom on a shared circuit.

The small size cuts both ways. In a standard 36 in masonry opening it will look modest, and the low flame will sit well below the opening’s top edge. The listing does not state a cord length.

Check Innoflame PD20-20 price on Amazon

5. Touchstone Forte 80006 — Best for a Hardwired Install

Best for a hardwired install

Why we like it

• Ships with a cord but is hard-wire ready
• States its maximum draw: 12 amps
• Listing says it can go in an existing fireplace opening
• Wi-Fi app, Alexa and Google Home control

Touchstone Forte 80006 — 40 in recessed, 1500W, 6 ft cord or hard-wire, 12 A max, 8 in top clearance, Wi-Fi/Alexa, 1-yr warranty

The Firebox Option That Can Skip the Outlet Entirely

Running a cord out of a firebox to a wall outlet is the clumsy part of most electric inserts. The PuraFlame Western explicitly cannot be hard-wired, and most other listings on the shelf say nothing about wiring at all. The Forte comes with a 6 ft cord but states that it is hard-wire ready, which lets an electrician bring a dedicated feed into the opening and leave no visible cord. It is also one of only three listings that say outright that they can be used in an existing fireplace opening.

It is the most transparent listing on electrical load, too: it states a maximum draw of 12 amps. That figure tells you to give it its own 15-amp circuit, or at least a circuit with nothing else heavy on it.

The catch is geometry. This is a flat recessed box about 5 in deep and 28 in tall, so it suits a tall, rectangular opening; a firebox with a sloped back or an arched top will need trim or framing to close the gaps.

Check Touchstone Forte 80006 price on Amazon

6. VEVOR SDF-35Q10P — Best Shallow Recessed Box

Best shallow recessed box

Why we like it

• About 5.9 in deep at a full 27 in height
• 750/1500W with 62 to 82 F thermostat
• Nine flame colors and five brightness levels
• Built-in overheat shut-off and 8 hour timer

VEVOR SDF-35Q10P — 35 x 27 x 5.9 in recessed insert, 750/1500W, 5,000 BTU, 62–82 F, 9 flame colors, 8-hr timer

Nearly 3 Inches Shallower Than the PuraFlame at the Same Height

The VEVOR 35 and the PuraFlame Western are almost the same face size, about 35 in wide by 27 in high, which happens to match a lot of standard masonry openings. The difference is depth: the VEVOR lists about 5.9 in against the PuraFlame’s 8.8 in overall. In a shallow firebox, or one where the back wall slopes forward near the top, that difference decides whether the box sits plumb.

The listing describes it as a recessed insert for pre-existing spaces and says installation accessories are included.

It is not a firebox-specific product, though. The listing does not mention trim or a surround kit, so in a masonry opening you may need to build a filler panel to close the gap around the glass. It also does not name a safety certification, state a cord length, or list a warranty term.

Check VEVOR SDF-35Q10P price on Amazon

7. Innoflame RV23V80M-MT1 — Best for a Narrow Framed Opening

Best for a narrow framed opening

Why we like it

• States exact front and minimum rear opening sizes
• Names both CSA and UL listing
• Cool-touch front glass for kids and pets
• Light at about 19 lb

Innoflame RV23V80M-MT1 — 23 x 19 3/4 in front opening, 1400W, 5,000 BTU, CSA/UL, cool-touch glass, 1-yr warranty

The Clearest Opening Spec for Building a Surround

This one suits owners who decide to frame in a big, drafty masonry opening and set a small insert into a new non-combustible or mantel surround, or who have a small framed opening to fill. The listing gives two numbers you rarely see together: the visible front opening (23 by 19 3/4 in) and the minimum rear opening needed to slide the unit in from behind. That makes it easy to plan the framing before the box arrives.

It is one of only two listings on the shelf that name both CSA and UL, and the listing describes cool-to-touch tempered glass and dual overheat protection.

It is not a drop-in for a raw firebox: it mounts from the rear, so expect to build a frame or cabinet around it.

Check Innoflame RV23V80M-MT1 price on Amazon

Measure the firebox before you shop

Insert listings give box dimensions, but a firebox is not a box. Masonry fireboxes usually narrow toward the back and the rear wall often slopes forward toward the damper, so the usable space shrinks as you go deeper and higher. Take these measurements with the damper open and the grate removed:

• Front width at the opening, and rear width at the back wall, both at floor level.
• Front height from the hearth floor to the underside of the lintel or arch.
• Depth at the floor, and depth at the height of the insert’s top edge. The second number is the one that catches people out on sloped-back fireboxes.
• The distance from the opening to the nearest outlet, and whether a cord can reach it without crossing the hearth.

Compare the rear width and the upper depth with the insert’s body size, not its trim size. A full-front insert like the PuraFlame Western covers small gaps with its trim, while a recessed box like the VEVOR or the Touchstone needs a filler panel or new surround if the opening is much larger than the glass. Log sets are the most forgiving: they only need floor space and enough height to keep the logs below the lintel. If you are still deciding between electric and a wood or gas insert, our overview of how fireplace inserts work and fit covers the other fuel types.

Power: the 120V outlet question

Every pick here runs on a standard 120V household circuit, and most draw up to 1500W on high, which is close to the practical continuous limit of a 15-amp circuit. That is why the Westinghouse and Touchstone listings on the shelf warn against sharing the circuit, and why the U.S. Fire Administration’s heater safety guidance says not to plug anything else into the same circuit as a heater, and to plug heaters directly into outlets and never use an extension cord or power strip. An electric insert is a heater with a nice face, so the same rules apply.

Fireplaces were rarely built with an outlet inside or beside them. Your options, from simplest to cleanest:

• Existing nearby outlet. Route the cord along the edge of the firebox and hearth to the closest receptacle. Check that the cord is not pinched by glass doors or a screen and does not lie where people step.
• New outlet beside the hearth. An electrician can add a receptacle in the wall next to the fireplace, ideally on its own circuit.
• Hard-wired feed. Units like the Touchstone Forte allow a direct, permitted connection inside the opening.

Never route a cord up the flue or through firebrick. If you are unsure whether a circuit can carry a 1500W load alongside what is already on it, a licensed electrician or a home inspector can tell you quickly. The USFA also advises choosing a heater tested by a recognized laboratory, which is why we flagged which listings name CSA, UL or ETL and which say nothing.

The chimney above an electric insert: draft, sealing and safety

An electric insert burns nothing, so it does not need the chimney to vent. That changes the job the chimney does. An open flue above an electric insert is a hole in the house: warm room air rises up it all winter, and in a Front Range wind it can whistle and pull cold air down. A few steps make a big difference:

• Close the damper if it still seals, after the last wood fire is long out and the firebox is cold.
• Seal the flue with a removable chimney balloon or a top-sealing damper if the throat damper is warped or rusted. Keep it removable.
• Keep the clearances. USFA guidance is to keep anything that can burn at least 3 feet from heat sources including fireplaces, and the listings themselves add top clearances (8 in for the Touchstone).

If you might burn wood again later, do not abandon the chimney entirely. The USFA advises having the chimney inspected and cleaned each year by a professional when it is in use, and a chimney that sat idle for years should be inspected before the first fire. An electric insert also makes the fireplace’s existing glass doors more useful, since closing them over a log set cuts drafts further.

Two things an electric insert does not do: it does not meet the rules for a wood insert, and it does not fix a damaged firebox. EPA’s Burn Wise program notes that wood-burning fireplace inserts install within the firebox and need a properly installed flue liner, and factory-built fireplaces need an insert designed for that unit. Cracked firebrick or a crumbling crown still need repair whatever sits in front of them.

How Front Range homes actually use electric inserts

Most Colorado buyers are making one room cozy without lighting a fire, not replacing a furnace:

• No-burn days. The Denver metro issues winter air-quality action days that discourage wood burning. An electric insert gives the look of a fire on those nights without smoke.
• Basement and family rooms. Lower-level fireplaces are often small and shallow, which is where low log sets like the Innoflame PD20-20 fit best. A 400 sq ft supplemental heater can take the chill off a finished basement while the thermostat upstairs stays lower.
• Dry winter air. Electric heat does not add moisture, whatever some listings imply; a humidifier in the same room helps.

Decide early whether you want to keep wood-burning as an option. A log set lifts out in minutes, a full-front insert takes longer, and a hard-wired recessed box is close to permanent. If the choice is between a wood fireplace you rarely use and an electric one you would use often, our guide to living with a wood-burning fireplace covers the upkeep side. For freestanding and wall-mount units that do not need a firebox at all, see our parent roundup of the best electric fireplaces overall, and our electric fireplace basics guide explains heater ratings in more depth.

When an electric insert is not the whole answer

Call a professional before you install if any of these apply:

• You see cracked or missing firebrick, gaps in mortar joints, or a damper that will not open or close.
• There is water staining in the firebox or on the ceiling or wall near the chimney, which points to a failed crown, cap or flashing.
• The fireplace is a factory-built metal unit and you are not sure what it is approved for.
• You plan to hard-wire the insert or add a new circuit, which is permitted electrical work.

A home inspection looks at the firebox, damper, hearth extension, chimney exterior and nearby electrical, and can point you to a chimney sweep or electrician where needed. Browse our heating and cooling inspection guides for what inspectors check, or contact us to connect with a vetted Front Range inspector before you commit to a fireplace project.

References

• U.S. Fire Administration — Heater fire safety card: https://www.usfa.fema.gov/downloads/pdf/publications/heater_fire_safety_card.pdf
• U.S. Fire Administration — Prevent home heating fires: https://www.usfa.fema.gov/prevention/home-fires/prevent-fires/heating/
• U.S. Fire Administration — Fireplace and wood stove safety card: https://www.usfa.fema.gov/downloads/pdf/publications/fireplace_woodstove_safety_card.pdf
• U.S. EPA Burn Wise — Choosing wood-burning appliances: https://www.epa.gov/burnwise/choosing-wood-burning-appliances