10 Best Infrared Fireplace Insert Heater 2026 in the United States

The Dimplex Revillusion 36" Built-in Firebox is a stylish and functional option for those looking to add both warmth and ambiance to their living space. It offers a heating capacity of up to around 4400 BTU, suitable for heating small to medium rooms efficiently. The unit’s size—just over 37 inches wide and about 12 inches deep—makes it a good fit for built-in installation in a variety of room layouts, whether centered or in a corner. One of its standout features is the Mirage Flame Panel, which creates a very realistic flame effect thanks to partially frosted acrylic that avoids unwanted reflections, enhancing the cozy atmosphere without the glare typical of many electric fireplaces.

This fireplace provides three power levels (1375, 1975, and 2575 watts), giving some flexibility in heating output and energy use. Installation is straightforward, as it can be surface-mounted and plugged in or recessed and hardwired, but it requires some care due to its weight (about 75 pounds) and hardwired power source. Safety-wise, it is vent-free and includes standard protections, but because it’s vent-free, good room ventilation is important. Maintenance is minimal since it uses LED flames and does not produce real combustion by-products. While it doesn't have a digital thermostat control, it allows you to adjust heat levels manually, which keeps things simple but might feel less convenient for some.

Combining elegant design with reliable heating and a visually appealing flame effect, this electric fireplace insert is a solid choice for anyone wanting a built-in solution that balances style and function.

The PuraFlame Klaus 33” Electric Fireplace Insert offers a cozy and visually appealing heating solution for rooms up to 400 square feet. Its heating power ranges between 750 and 1500 watts, making it ideal as a supplemental heat source rather than the main heat provider. The unit has a traditional look with realistic resin logs, a brick-patterned interior, glass doors, and a mesh screen that add charm without the mess of burning wood.

The flame effect is adjustable with three brightness levels and can run without heat, perfect for year-round ambiance using energy-efficient LED lighting. The adjustable thermostat and included remote make it simple to control the temperature and flames from across the room. Measuring 44.1” wide, 31.5” high, and 10” deep, it fits standard fireplace openings but requires floor placement and standard electrical outlet power (no hardwiring). Installation is straightforward, with no complicated setup or venting needed.

Since it’s vent-free and designed for supplemental heating, it’s not suitable for large spaces or as a primary heater. The one-year warranty provides some security, though the unit’s split delivery might be inconvenient. This fireplace insert suits those wanting a stylish, easy-to-use electric fireplace to add warmth and charm to medium-sized living areas without the upkeep of a real wood fire.

The PuraFlame Klaus 23” Electric Fireplace Insert is a versatile and stylish option for adding warmth and ambiance to your home. Its realistic design features a life-like resin log, three-sided interior brick wall, glass door, and mesh screen, creating the look of a traditional wood-burning fireplace without the maintenance hassle. The adjustable thermostat offers two heating settings (750W and 1500W), providing supplemental heat for rooms up to 400 square feet, though it isn’t suitable as a primary heat source. The unit includes a remote control for easy operation and boasts three flame settings with adjustable intensity and brightness, which can be used year-round thanks to energy-saving LED technology.

Safety is considered with features like a mesh screen and glass door, preventing direct contact with the heating elements. However, it cannot be hard-wired and must be plugged into a standard 120V outlet. The installation is straightforward, as the insert sits directly on the floor. While it comes with a one-year warranty, the customer service is noted to be responsive and helpful.

On the downside, the fireplace comes in two packages, which may arrive on different days, potentially causing delays and inconvenience. Additionally, its heating capacity is limited to 400 sq. ft., meaning it is best suited for small to medium-sized rooms. Despite these minor drawbacks, it's an attractive and effective supplemental heating solution for living rooms or similar spaces.