Got an old wood-burning fireplace that barely gets used? If you want to convert it to electric without doing a full remodel, the Amantii Fireplace Insert is a really practical solution. It’s designed to sit flush in a fireplace opening, looks built-in, and doesn’t demand a ton of construction work.
Fireplace Conversion Made Easy
The standout feature here is the surround. Instead of trying to “make” an insert fit an old opening, it’s built specifically for fireplace cut-outs. That makes the whole setup feel more intentional—like you upgraded your fireplace, not like you stuffed a heater in a hole.
Another thing I appreciate is the depth the surround adds. Wall-mounted fireplaces can look a little “flat” in a traditional hearth space. This one gives you that layered, inset look that feels more like a real fireplace feature.
The black steel finish is also pretty forgiving. It’s modern, clean, and works with most styles—traditional, contemporary, even transitional spaces. So if you love your current mantel and don’t want to replace it, this insert can update the firebox area without forcing you to redo the whole wall.
Setup is straightforward. The insert includes a cord (about six feet) and a plug, so you can run it from a standard outlet. It also includes four leveling feet, which is one of those “small details” that saves you a lot of annoyance if your hearth surface isn’t perfectly even.
Note: This electric fireplace does have a heater and fan. What’s nice is that the vents are tucked into the surround, so you don’t have an obvious “space heater vent” ruining the built-in look.
Why Convert a Wood-Burning Fireplace to Electric?
If your fireplace is mostly decorative—or you avoid using it because it’s messy—electric is honestly a great upgrade. You get the cozy visual effect without dealing with ashes, soot, chimney sweeping, or hauling firewood.
It’s also a cleaner choice day-to-day. No smoke in the house. No lingering odor. And no worrying about “spare the air” restrictions in areas where wood burning gets limited during poor air quality days.
Another big win is flexibility. You can run an Amantii electric fireplace with flames only, or flames plus heat. That means you can enjoy the “fireplace glow” on a mild evening without heating the room.
And flame realism has come a long way. Amantii uses a “Gradient Flame” style effect that gives the fire more depth. From a few steps back, it can genuinely read like a gas fireplace—especially at night when the room lighting is lower.
The included log set keeps things classic, so your fireplace still feels like a fireplace. You’re just swapping the maintenance-heavy part for something you’ll actually use. And once you get used to a remote-controlled fire, it’s hard to go back.
Specs for the Amantii Fireplace Insert
- Dimensions: 42″ Wide x 30″ Tall x 10.125″ Deep
- Glass Viewing Area: 27 5/8″ Wide x 17 3/8″ Tall
- Weight: 73 lbs
- Color: Black Steel Surround
- Heat Output: 4800 BTUs
- Heats 400-500 Square Feet
- Hard Wire Ready
- Volts: 120
- Watts: 1500
- Cord Length: 74″ Long
- Cord with Plug on left side
- Includes Log Set
- Comes with Remote Control
- Installation Guide/User Manual
- Model #: INS-FM-34
- Manufacturer: Sierra Flame
- Phone: 1-877-850-9458
- For Sale: Where to Buy the Amantii Insert
Frequently Asked Questions
Do I need to vent an electric fireplace insert?
No. Electric inserts are vent-free, which is one reason conversions can be so much easier than gas or wood.
Can I run the flames without the heater?
Yes. Most Amantii-style electric inserts allow flame-only mode, so you can use it for ambiance year-round.
Will this fit my existing fireplace opening?
Measure your opening and compare it to the insert dimensions (including clearance). If you’re between sizes, check the installation guide for recommended rough opening specs.
Does it look fake in daylight?
Like most electric fireplaces, it looks best in lower light. At night or in a cozy lamp-lit room, it’s much more convincing.
Is hardwiring required?
No. It’s plug-in ready. Hardwiring is optional if you want a cleaner, built-in finish and your setup allows it.
Reputable Resources For More Information
Conclusion
If you’re tired of looking at an unused wood-burning fireplace, converting it to electric is one of the easiest “big impact” upgrades you can do. The Amantii INS-FM-34 insert is especially appealing because it’s made for fireplace openings, looks flush and finished, and keeps the heater vents hidden so the whole thing feels built-in. Plug it in, grab the remote, and you’ll probably use your fireplace more in one week than you did all last year.