10 Best Electric Fireplace Insert For Existing Fireplace 2026 in the United States

The Touchstone Forte Elite is a modern 40-inch in-wall electric fireplace designed to fit existing fireplace spaces with a sleek, minimal black frame that complements most rooms. It offers a good heating capacity, warming up to about 400 square feet with its 1,500-watt heater and adjustable thermostat ranging from 68 to 88 degrees Fahrenheit, making it a practical option for supplemental heating in living rooms or bedrooms. One of its standout features is the realistic flame effect with 60 color combinations and adjustable intensity, enhanced by included decorative logs, driftwood, and crystals for an authentic look.

Installation is designed for recessed mounting, and while it comes with clear instructions, it requires precise measurements and some DIY skill, plus the option to plug in or hardwire it. The fireplace supports smart home integration and can be controlled via remote, app, or voice assistants like Alexa and Google Home, adding convenience for daily use. Safety-wise, it’s vent-free and has heat vents positioned safely, but users should keep it at least 8 inches below any mantel or object above. The unit weighs 52 pounds and is relatively shallow at 5.5 inches deep, fitting most standard openings.

Potential considerations include the need for 2 AAA batteries in the remote and the 1,500W power use, which might matter to energy-conscious buyers. The unit’s 1-year limited warranty may also feel brief for some. This fireplace is well-suited for those looking to upgrade their existing fireplace with a stylish, feature-rich insert that combines warmth, atmosphere, and smart controls.

The Touchstone Sideline Infinity 60" electric fireplace insert is a versatile and stylish option for upgrading an existing fireplace opening. Its size (60" wide) is suited for larger fireplaces and it offers flexibility in installation with four different display options, including three-sided views, which is great if you want a modern look and multiple viewing angles. The heating power is adequate for small to medium rooms, warming up to about 400 square feet with two heat settings (750W and 1500W), controlled by a thermostat to keep the temperature comfortable.

This model excels in visual customization, offering 60 different flame and ember bed color combinations, plus realistic LED flames behind cool-touch glass. The included log set and crystals add to the fireplace's modern and appealing design. Controls are easy to use with a touchscreen, remote, and even smartphone app via Wi-Fi, compatible with Alexa and Google Home for voice commands, which adds convenience.

On the installation front, it can be plugged in or hardwired, but because it’s quite large (8" deep and over 17" tall), you’ll want to measure your fireplace opening carefully to ensure a proper fit. It’s built for wall-mount setups, so it suits built-in fireplace openings rather than freestanding use. Safety-wise, the cool-touch glass and thermostat prevent overheating, making it safe for most home environments. While it provides supplemental heat, it’s not meant to replace a main heating source. The electric heater is fairly efficient for its size, but running it on high heat for long periods could impact your electricity bill. If you want a fireplace insert that combines good heating with striking flame effects and smart home features, the Touchstone model offers a compelling combination. Just be sure your fireplace dimensions match and you’re comfortable with the installation options before buying.

The Napoleon CLEARion 60-Inch Built-In See-Through Electric Fireplace is a unique choice for those wanting a modern, two-sided fireplace insert that fits into an existing fireplace setup. Its size (60 inches wide) makes it a striking centerpiece, suitable for larger rooms like living rooms or open spaces. The see-through design with a privacy glass feature lets you switch between transparent to opaque, adding flexibility to the flame's visibility and ambiance.

Heating-wise, it delivers up to 10,000 BTUs, effectively warming spaces up to about 800 square feet, which is decent for supplemental heat but might not replace a main heating source in very large rooms or homes. The fireplace uses quartz burners, which help create a realistic flame effect complemented by logs and crystal media for a cozy, contemporary look. The included blower helps distribute heat, and the adjustable thermostat and remote control add convenience so you can easily manage warmth and flame settings.

Installation requires direct wiring to standard 120V or 240V outlets and is designed for built-in mounting, so professional installation is recommended if you're not comfortable with electrical work. It is vent-free, meaning no chimney or venting is needed, which simplifies setup but also means it should be used according to safety guidelines to ensure proper room ventilation. The fireplace’s powder-coated finish and quality materials like glass and stainless steel give it a durable, stylish appearance. If you're looking for a stylish, see-through electric fireplace insert that offers a good balance of heat, visual appeal, and modern features, the Napoleon CLEARion proves to be a solid contender. However, if you need heavy-duty heating or a simple plug-and-play model, this may require more investment and professional help.