This Much-Hyped Wall Heater Might Save You Energy. But It Has a Fatal Flaw

Wired

by Matthew Korfhage

February 20, 2026

AI-Generated Deep Dive Summary

The Boldr Kelvin heater is a sleek, modern option for home heating that promises energy savings and far-infrared warmth but has some notable drawbacks. Designed as a large, mirrored panel, the device claims to efficiently heat spaces using low power (450 watts) and无声运行. It connects to a smart app for customization and energy monitoring, making it a tech-forward addition to any room. However, users have reported issues with its heating efficiency, particularly in raising ambient air temperature quickly. The heater takes an hour to fully warm up, and while it emits gentle radiant heat, it can overheat the wall where it’s mounted. Despite these flaws, its minimalist design and potential energy savings make it an intriguing option for those seeking a stylish, albeit imperfect, heating solution. The Kelvin stands out in the space heater market with its innovative use of far-infrared technology, which is known for delivering direct warmth to objects and people rather than heating the air. This method mimics natural processes like sunlight, providing a comfortable, even heat. The device’s minimalist design, available in white or black, makes it more of a decorative piece than traditional heaters. Its app integration allows users to monitor energy usage and adjust settings remotely, adding a layer of convenience. However, its narrow use case—suitable for small spaces only—and limited ability to quickly raise room temperature are significant drawbacks. While the Boldr Kelvin is not the first infrared heater on the market, it has gained attention due to its sleek design and app-connected features. Far-infrared heating technology is not new, but its application in home heaters continues to evolve. The device’s energy efficiency claims make it an appealing option for eco-conscious consumers. Despite its flaws, such as slow heating and potential wall overheating, the Kelvin represents a step forward in blending aesthetics with functionality. For tech enthusiasts and early adopters, its innovative approach to heating offers a glimpse into future home climate control possibilities. The

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Originally published on Wired on 2/20/2026