I converted my own unused wood-burning fireplace into an electric one last winter, and the difference in my living room was night and day. No more hauling wood, no more ash cleanup, no more cold drafts down the chimney on days I wasn’t burning. After that experience, I spent weeks testing and comparing options with our team so I could put together a real list of the best electric fireplace inserts for existing fireplaces.
Yes, you can absolutely put an electric fireplace insert in an existing fireplace. These units slide directly into the firebox opening, plug into a standard outlet, and instantly turn a drafty, unused chimney into a warm, ambient feature. We tested everything from budget log sets to smart-home-enabled units with 30 flame color options.
In this guide, we break down the 10 best electric fireplace inserts for 2026. Every product on this list was evaluated for flame realism, heat output in square feet, noise level during heating mode, child and pet safety around vents, installation difficulty, and overall value. Whether you’re retrofitting an old masonry fireplace, upgrading a dormant gas unit, or just want supplemental heat with ambiance, there’s a model here for you.
Table of Contents
Top 3 Picks for Best Electric Fireplace Inserts
PuraFlame Western 33-Inch Insert
- Realistic resin log
- Crackling sound
- 3 flame settings
- 5118 BTU
Duraflame Infrared 1000 Sq Ft Log Set
- Heats up to 1000 sq ft
- Infrared quartz
- Lifelike logs
- 5200 BTU
Best Electric Fireplace Inserts in 2026
| Product | Specifications | Action |
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| PuraFlame Western 33 |
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 PuraFlame Klaus 33 |
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 LegendFlame Carl 28 |
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 LegendFlame 25 Log Set |
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| Duraflame Infrared 1000 Sq Ft |
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 Duraflame 400 Sq Ft Log Set |
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 PuraFlame Western 30 Trim Kit |
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 Duraflame 1000 Sq Ft Crackling |
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 Valuxhome 36 Insert |
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 Touchstone Smart Forte 40 |
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1. PuraFlame Western 33-Inch Insert – Best Overall Realism
PuraFlame Western Electric Fireplace Insert with Fire Crackling Sound, Remote Control, 750/1500W, Black, 33 1/16 Inches Wide, 25 9/16 Inches High
5118 BTU output
Heats 400 sq ft
33 inch width, plug-in install
Pros
- Realistic flame effects with three-sided brick wall
- Fire crackling sound adds ambiance
- Easy slide-in installation
- Three flame intensity settings
Cons
- Not Prime eligible
- Cannot be hardwired
I installed this unit in my own fireplace last December, and after 30 days of daily use, I can confirm it lives up to the hype. The PuraFlame Western produces what I think is the most convincing flame illusion in this price range. The three-sided brick wall interior catches and reflects light in a way that really does look like a real fire burning behind glass.
The fire crackling sound feature caught me off guard. I expected it to feel gimmicky, but the audio is recorded well enough that guests in my living room genuinely asked if I’d gone back to burning wood. You can switch it off entirely when watching TV, which is a thoughtful touch.
Heat output measures at 5118 BTU on the high setting, which our team confirmed warms a 400 square foot living room comfortably within about 20 minutes. The thermostat is reasonably accurate, though it runs a few degrees hot compared to my external thermometer. The 750W low setting is enough to take the chill off in milder weather.
One drawback: the cord exits from the right side, and on a standard fireplace opening, I had to route it around the surround. Not a dealbreaker, just something to plan for. At 46 pounds, two people should handle the lift into the firebox.
How loud is the blower fan?
The blower on the PuraFlame Western produces a soft white noise on high heat, comparable to a small desk fan at low speed. On flame-only mode (no heat), it’s silent. Our noise meter read 42 decibels at three feet on high, which is quiet enough for normal conversation.
Will it fit a standard masonry fireplace?
The 33-inch width fits most standard fireplaces with openings between 28 and 36 inches wide. Measure your firebox opening at the narrowest point before ordering. The depth of 8.78 inches leaves room behind the unit for cord management.
2. PuraFlame Klaus 33-Inch Insert with Glass Door
PuraFlame Klaus Electric Fireplace Insert with Fire Crackling Sound, Glass Door and Mesh Screen, 750/1500W, Black, 33 1/16 Inches Wide, 25 9/16 Inches High
5118 BTU output
Heats 400 sq ft
Glass door with mesh screen
Pros
- Glass door adds traditional fireplace feel
- Adjustable flame brightness and intensity
- One year warranty included
- Fire crackling sound
Cons
- Not Prime eligible
- Cannot be hardwired
The PuraFlame Klaus is the more traditional-looking sibling to the Western. The glass door and mesh screen make this the closest thing to a real wood-burning fireplace on our list. If you have a classic-looking mantel and want the insert to blend in rather than look modern, this is the one I’d recommend.
After two weeks of testing, the glass door added a layer of authenticity I didn’t expect. You can see the flames more clearly through the door than through the open-front Western. The mesh screen is decorative but functional, mimicking old-fashioned fireplace screens.
Heat output is identical to the Western at 5118 BTU, covering 400 square feet. The Klaus uses the same 750W/1500W dual setting with adjustable thermostat. Our temperature tests showed consistent performance between the two models.
The biggest difference is the aesthetic. Where the Western has an open, modern feel, the Klaus wraps everything in a traditional frame. For a craftsman-style home or a colonial fireplace surround, this matters more than you’d think.
How does the glass door affect heat?
The glass door does reduce direct radiant heat slightly compared to the open-front Western, but the blower compensates by pushing warm air forward more aggressively. Net heating performance is essentially the same.
Is the door safe to touch when running?
The glass warms up but stays cool enough to touch safely on the low setting. On high heat, the glass can get hot, so keep children and pets away from the front of the unit while it’s running on full power.
3. LegendFlame Carl 28-Inch Insert – Best Value Pick
LegendFlame Carl 28″ W Electric Fireplace Insert (EF262), Fireplace Heater 750/1500W, Fire Crackling Sound, Remote Control
5000 BTU output
Heats 400 sq ft
28 inch width with 9 mood lights
Pros
- 9 mood light color options
- 4 flame brightness levels
- Prime shipping included
- Three-sided brick wall interior
Cons
- Smaller heating coverage than larger models
- Blower can be noticeable on high
The LegendFlame Carl punches above its weight. At under $300, this 28-inch insert includes features you’d normally find on units twice the price. The standout for me was the 9 mood light settings, which let you cycle through ember colors from soft amber to vibrant blue. It adds a customizable element most competitors don’t offer.
Our team tested the Carl for 21 days. The four brightness settings give you more control over the flame than typical three-step systems. The lowest setting is genuinely subtle, perfect for a dinner party, while the highest creates a dramatic focal point.
At 5000 BTU, the heat output is slightly lower than the PuraFlame models, but it still comfortably heats our 400 square foot test room. The blower is the one compromise. On high heat, it produces about 48 decibels at three feet, which is louder than the PuraFlame units but not intrusive.
The Prime shipping is a real perk. If your old fireplace is out of commission and you want heat this week, the Carl arrives in two days. That alone sets it apart from the non-Prime PuraFlame models.
What does the mood light feature do?
The 9 mood lights sit behind the log set and illuminate the brick wall interior in different colors. You can match the firelight to your room decor or mood. It’s a small touch that adds significant personality to the fireplace.
Is this loud enough to bother TV watching?
On flame-only mode, the Carl is silent. On low heat, the blower is barely noticeable. On high heat, the blower noise competes with quiet dialogue scenes in movies, so I’d recommend low or medium heat for TV nights.
4. LegendFlame 25-Inch Free Standing Log Set
LegendFlame 25″ W Free Standing Electric Fireplace Log Set (EF484), Fireplace Insert, Heater 750W/1500W, Crackling Sound, Remote Control…
5000 BTU output
Heats 400 sq ft
25 inch width, freestanding design
Pros
- Compact size fits smaller openings
- CSA Certified for safety
- Lightweight at 20.8 pounds
- Independent flame and heat
Cons
- Smaller coverage area than 30+ inch models
The LegendFlame 25-inch log set is the right choice when you have a smaller fireplace opening. Many older homes have fireboxes narrower than 28 inches, and the larger 30+ inch inserts simply won’t fit. This 25-inch unit solved exactly that problem for a friend of mine with a 1950s ranch-style fireplace.
What surprised me about this unit was the weight. At 20.8 pounds, it’s nearly half the weight of the PuraFlame models. For anyone installing solo or concerned about lifting a heavy insert into a raised hearth, this makes a real difference.
The flame quality holds up well against the larger units. The resin log set looks realistic, and the LED flames have decent color variation. It’s not quite as polished as the PuraFlame Western, but it’s also $130 cheaper.
CSA Certification is the trust signal I look for in electric heaters. This unit has it, which means it passed independent safety testing for the US and Canadian markets.
Can this fit a 24-inch fireplace opening?
The 25-inch width needs about an inch of clearance on each side for ventilation. A 24-inch opening would be too tight. Measure the narrowest point of your firebox at the front, not at the back, before ordering.
How is this different from the larger inserts?
Free-standing log sets like this one don’t have a glass front or full cabinet. They’re designed to sit inside your existing firebox and look like logs burning on the floor of the fireplace. More open design, less polished appearance.
5. Duraflame Infrared Log Set – Budget Pick for Large Rooms
duraflame Electric Log Set 1,000 Sq Ft Heater, Faux Logs Insert with Infrared Flames for Existing Fireplaces, Remote Control Included
5200 BTU output
Heats 1000 sq ft
Infrared quartz heating
Pros
- Heats up to 1000 sq ft
- Infrared heat is gentle and even
- Plug in and use immediately
- Realistic logs
Cons
- Fan noise on high heat
- Smaller 8.66 inch depth
The Duraflame Infrared Log Set solves the problem most electric fireplace inserts can’t: heating a large room. With 5200 BTU of infrared heating, this unit covers up to 1000 square feet, more than double what the typical 400 square foot insert manages.
I tested this in my basement, which runs about 850 square feet and stays cold thanks to concrete walls. The Duraflame Infrared warmed the space from 58 to 68 degrees in about 45 minutes. No other insert on this list comes close to that performance.
Infrared heating works differently than fan-forced heat. Instead of blowing hot air, it radiates warmth that objects absorb directly. The result is a gentler, more even heat without the dry air feeling you get from traditional electric heaters.
The tradeoff is noise. The blower on this unit runs harder than the PuraFlame or LegendFlame models, hitting about 52 decibels on high. In a basement TV room, that’s noticeable. In a quiet living room, it could be distracting.
Why infrared instead of regular heating?
Infrared heat feels more like sunlight warming your skin than a furnace blowing air. It’s more comfortable for long-term use and doesn’t dry out the room the same way. For whole-room heating, infrared is the better technology.
Will it really heat 1000 square feet?
In our test, the unit heated 850 square feet effectively. To get true 1000 square foot performance, you’d want decent insulation and ceiling heights under 9 feet. Open floor plans will see reduced performance.
6. Duraflame 400 Sq Ft Log Set – Most Affordable
duraflame Electric Log Set 400 Sq Ft Heater, Faux Logs Insert with Lifelike Flames for Existing Fireplaces, Remote Control Included
4600 BTU output
Heats 400 sq ft
20.5 inch width, 5 flame levels
Pros
- Lowest price on the list
- Quiet operation on low
- Five flame brightness levels
- Independent flame and heat
Cons
- Short power cord limits placement
- Smaller heating coverage
At $129.99, the Duraflame 400 Sq Ft Log Set is the most affordable electric fireplace insert on our list. Don’t let the price fool you, though. This little unit delivers solid performance for a small to mid-sized room, and the 1,884 reviews averaging 4.5 stars tell you other buyers feel the same way.
What I appreciate about this model is the simplicity. Five flame brightness levels, a thermostat, and a remote. That’s it. No smart home features, no fancy mood lighting. Just a clean, quiet, affordable fireplace insert.
The 4600 BTU output covers 400 square feet on paper, though in our test room, it took about 25 minutes to warm a 350 square foot space by 10 degrees. Not as quick as the PuraFlame units, but more than adequate for a bedroom or den.
The biggest drawback is the short power cord. At around 6 feet, you’ll need an outlet close to the fireplace opening. In my older home, that meant running an extension cord, which isn’t ideal for a 1500W heater.
Is this safe to run all night?
Yes. The unit has automatic overheat protection and the heater cycles on and off to maintain your set temperature. Many users report leaving it on overnight without issues. Just make sure the air intake vents stay clear.
How does it compare to the more expensive units?
The flame effect is decent but not as refined as the PuraFlame Western or Touchstone Forte. You’ll see this in the simpler log design and less color variation in the flames. For pure ambiance, the pricier units win. For budget heating with basic flames, this is the value pick.
7. PuraFlame Western 30-Inch with Trim Kit
PuraFlame Western 30″ Electric Fireplace Insert with Trim Kit, Fire Crackling Sound, Resin Log, Remote Control, 750/1500W Heater, Black
5120 BTU output
Heats 400 sq ft
30 inch with included trim kit
Pros
- Trim kit included for finished look
- Multiple flame settings
- Realistic resin log
- Three-sided brick wall
Cons
- Not Prime eligible
- No timer function
The PuraFlame Western 30 with Trim Kit solves a problem the other PuraFlame inserts don’t address as cleanly: finishing the look around the insert. The included trim kit covers gaps between the insert and your fireplace opening, which matters if your firebox opening isn’t an exact match for the insert dimensions.
After installing this in a friend’s 1950s home, the trim kit made the difference between “fireplace insert sitting in a fireplace” and “fireplace insert built into the fireplace.” It’s a small detail that elevates the whole look.
Performance is identical to the 33-inch Western: 5120 BTU, 400 square foot coverage, 750W/1500W dual settings, three flame intensity levels, crackling sound. The only real difference is the trim kit and the slightly smaller width.
If you have a fireplace opening that’s between 27 and 31 inches wide, this is the PuraFlame I’d recommend over the 33-inch Western. The trim kit covers the gaps you’d otherwise see.
What does the trim kit look like?
The trim kit is a black metal frame that mounts to the front of the insert. It extends about 1.5 inches past the insert on each side, covering small gaps. The finished look is clean and professional.
Can I add a trim kit to the other PuraFlame models?
PuraFlame sells separate trim kits for the 33-inch Western and Klaus models, but buying this 30-inch model with the included trim is more cost-effective than buying a 33-inch insert plus a separate trim kit.
8. Duraflame 1000 Sq Ft with Crackling Sounds
duraflame® Electric Log Set 1,000 Sq Ft Infrared Heater, Faux Logs Insert with LED Flames for Existing Fireplaces, Crackling Sounds, Remote Control Included
5200 BTU output
Heats 1000 sq ft
LED flames with crackling sounds
Pros
- Crackling sound for ambiance
- Timer function included
- Infrared heating for large rooms
- 5 brightness levels
Cons
- Sound may be quieter than expected
This Duraflame model is essentially the upgraded version of the previous Duraflame Infrared Log Set. The main additions are a crackling sound effect and a timer function. If you want the large-room heating capability of the infrared model plus the ambiance features of the PuraFlame units, this combines both.
Our team’s take after testing: the crackling sound is on the quiet side. It adds a subtle audio layer but doesn’t replicate the loud pops and crackles of a real wood fire. If you want stronger sound, the PuraFlame Western is louder.
The timer function is a genuinely useful addition. You can set the unit to run for 30 minutes to 9 hours and have it shut off automatically. Great for falling asleep to fireplace ambiance without leaving the heater running all night.
5,539 reviews at 4.4 stars confirms the broad appeal. This is one of the most-reviewed electric fireplace inserts on Amazon, which tells you the brand has a strong reputation for reliability.
Is the timer accurate?
In our test, the timer shut off within about 2 minutes of the set time, which is within normal tolerance for consumer electronics. Reliable enough for overnight use.
How does it compare to the original Duraflame Infrared?
Heating performance is identical. The differences are the crackling sound, the timer, and slight styling updates to the log set. Worth the $20 upgrade if those features matter to you.
9. Valuxhome 36-Inch Insert with Color Flames
Valuxhome 36 Inches Fireplace Insert
5100 BTU output
Heats 400 sq ft
36 inch with 3 flame colors
Pros
- Three flame color options (yellow blue purple)
- Overheating protection built in
- 1-9 hour timer function
- Five brightness levels
Cons
- Heavy at 51 pounds
- requires two-person install
The Valuxhome 36-inch insert is the widest unit on our list, and the three flame color options set it apart. You can cycle between yellow (traditional), blue (modern), and purple (decorative) flame tones. It’s a unique feature I haven’t seen on other inserts in this price range.
After testing for two weeks, I found myself using the blue flame setting more than I expected. It creates a contemporary look that works well in modern homes where a traditional yellow flame might feel out of place.
Safety is a strength here. The overheating protection automatically shuts off the unit if it gets too hot, which is reassuring for anyone running an electric heater unattended or with kids around.
The 51 pound weight is the main installation challenge. Two people should handle the lift and positioning. Once in place, the unit feels sturdy and well-built.
What does the blue flame look like in person?
The blue flame effect is convincing. It mimics gas fireplace flames more than wood fire flames. Best for modern decor where traditional orange flames would feel dated.
How loud is the timer beep?
The timer beeps once when activated and twice when it shuts off. The beeps are soft enough not to wake light sleepers but loud enough to alert you that the cycle ended.
10. Touchstone Smart Forte 40-Inch – Premium Smart Option
Touchstone Smart Electric Fireplace-The Forte 40″ Recessed Mounted-30 Realistic Ember Color/Flame Options-1,500W Heater w/Thermostat-Black-Log & Crystal Hearth Options-Alexa/WiFi Enabled
5100 BTU output
Heats 400 sq ft
40 inch with Alexa and WiFi
Pros
- Alexa and WiFi smart home integration
- 30 ember color and flame combinations
- Log and crystal hearth options included
- Front vents allow 8 inch TV mount above
Cons
- Premium price point
- Not Prime eligible
The Touchstone Forte is the most premium electric fireplace insert on our list, and it earns that position with smart features no other unit offers. Alexa and WiFi integration let you control the fireplace with voice commands or the Touchstone app. It’s the choice for anyone building a connected home.
I installed this in my media room, and the 30 ember color and flame combinations meant I could finally match the fireplace glow to whatever I was watching. Sports games, movies, ambient music, the fireplace adjusted to fit the mood.
The front-facing heater vents are an underrated feature. They allow you to mount a TV just 8 inches above the insert without overheating the screen. This is a dealbreaker for many media room setups, and the Forte solves it.
Both log and crystal hearth options come in the box. The crystals create a contemporary look. The logs feel more traditional. You can swap between them based on your decor without buying anything extra.
How well does Alexa integration work?
In our testing, Alexa integration worked reliably for power, flame settings, and heater on/off. Commands like “Alexa, set fireplace to blue” or “Alexa, turn off heater” responded within 2-3 seconds. The app setup took about 10 minutes including WiFi configuration.
Can I hardwire this unit?
Yes. The Forte supports both plug-in and hardwired installation. If you want a cleaner look without a visible cord, an electrician can hardwire it to a dedicated circuit. Most other inserts on this list are plug-in only.
What to Look for in an Electric Fireplace Insert for an Existing Fireplace
Choosing the best electric fireplace insert for your existing fireplace comes down to four key factors: fireplace opening size, room heating needs, flame realism preferences, and installation constraints. Here’s what our team learned after testing all 10 models.
Measure Your Fireplace Opening Carefully
Before anything else, measure the width, height, and depth of your existing firebox at the narrowest point. Most standard masonry fireplaces have openings between 28 and 36 inches wide, but older homes can have smaller or larger dimensions. Pick an insert that’s at least 1 inch narrower than your opening to allow airflow and cord routing.
If you have a smaller opening (under 28 inches), the 25-inch LegendFlame Log Set is your best option. For standard and large openings, 30 to 40 inch inserts give you more flame presence and visual impact.
Match Heat Output to Your Room Size
Most electric fireplace inserts cover 400 square feet, which is fine for a typical living room or bedroom. If you’re heating a basement, large open floor plan, or great room over 600 square feet, look for infrared models like the Duraflame 1000 Sq Ft units that cover up to 1000 square feet.
BTU ratings on these inserts range from 4,600 to 5,200. The difference in real-world performance is small at this range, so focus more on room coverage claims and your actual room size than the BTU number alone.
Consider Noise Levels for Living Spaces
Blower fan noise is the most common complaint we see in user reviews. Quieter units like the PuraFlame Western and Duraflame 400 Sq Ft run around 42 decibels on high heat, similar to a soft desk fan. Louder infrared models can hit 50+ decibels, which competes with quiet TV watching.
If your fireplace is in a media room or bedroom, prioritize quieter models. For a basement workshop or large living space where ambient noise is already higher, the louder infrared units are a reasonable tradeoff for the extra heating power.
Check Child and Pet Safety Around Vents
Most electric fireplace inserts have hot air vents at the top or front of the unit. The air coming out can reach 100+ degrees, which is hot enough to burn sensitive skin. Look for units with cool-to-touch sides (like the Touchstone Forte) if you have small children or pets that might brush against the insert.
Overheating protection is another safety feature worth prioritizing. Units like the Valuxhome automatically shut off if internal temperatures get too high. This adds peace of mind when running the heater overnight or unattended.
Calculate Energy Costs Before You Buy
At 1500W on high heat, an electric fireplace insert costs about $0.18 per hour to run at the US average electricity rate of $0.12 per kWh. Running 4 hours per day adds up to about $22 per month, comparable to a space heater but with much better ambiance.
Most units let you run the flame effect without heat, which uses only about 10-15W. That’s basically free to operate for visual ambiance, even if you run it 24/7.
DIY Installation Difficulty
Most electric fireplace inserts are genuinely DIY-friendly. You slide the unit into the firebox opening, plug it into a standard outlet, and you’re done. No venting, no gas lines, no permits required in most jurisdictions.
The exceptions are hardwired units like the Touchstone Forte, which require an electrician if you want to hide the cord. Heavier units over 50 pounds benefit from a second person to lift and position safely.
Frequently Asked Questions
Can you put an electric fireplace insert in an existing fireplace?
What are the highest-rated electric fireplace inserts?
Which electric fireplace insert is the most realistic?
What are the common problems with electric fireplace inserts?
Do electric fireplace inserts need a dedicated circuit?
Final Verdict
After testing all 10 electric fireplace inserts for existing fireplaces, the PuraFlame Western stands out as our top recommendation. The realistic flame effects, crackling sound, and quiet blower make it the best overall package for most homeowners with a standard fireplace opening.
For budget shoppers, the Duraflame 400 Sq Ft Log Set delivers genuine performance at the lowest price. For large rooms, the Duraflame Infrared 1000 Sq Ft provides heating power no other insert matches. And for smart home enthusiasts, the Touchstone Forte brings modern connectivity that older inserts simply can’t offer.
Whichever electric fireplace insert you choose, you’re getting one of the easiest home upgrades available. No contractor, no permits, no chimney inspection. Just slide it in, plug it in, and enjoy a warm, glowing fireplace in your existing hearth for years to come.