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The 7 Best Energy-Efficient Space Heaters, Tested and Reviewed
This article presents a comprehensive review of the seven best energy-efficient space heaters, based on extensive testing by a team of product experts. It aims to guide consumers in selecting a suitable space heater to provide supplemental heat and potentially reduce heating costs during colder months. The review highlights the importance of energy efficiency, advanced features like programmable thermostats, energy-saving modes, and crucial safety features.
The testing methodology involved a rigorous process where each space heater underwent 12 different tests, accumulating approximately 450 data points over 100 hours. The products were tested in rooms ranging from 169 to 196 square feet, with temperature changes monitored using Taylor wall thermometers. Tests included running heaters on both low and high settings for three hours each, measuring temperature in the room's center and corners to assess even heating and overall performance. Experts from Aire Serv were also consulted to provide insights into the benefits and appropriate use of energy-efficient space heaters.
Seven specific models are reviewed, each excelling in a particular category. The Dreo Space Heater Solaris 718 is named "Best Overall" for its strong heating performance, user-friendly touchscreen and remote controls, child lock, and tip-over protection, despite lacking some advanced features found in pricier models. The Dreo Space Heater Atom One is recognized as the "Best Budget" option, offering quick and efficient heating, oscillation, and safety features at an affordable price, though its tip-over shutoff mechanism took a few minutes to fully engage. For larger areas, the Dr. Infrared Portable Space Heater, designated "Best Infrared," effectively heats up to 1,000 square feet by warming objects rather than air, and includes a programmable thermostat and eco-mode. Its retro appearance is noted as a potential drawback.
The Vornado MVH Whole Room Heater is highlighted as "Best Portable" due to its even heat distribution through vortex air circulation, cool-touch exterior, and quiet operation, making it ideal for smaller rooms. However, it lacks a fan function and is not designed for very large spaces. The Black+Decker Portable Space Heater earned the title of "Safest" for its sensitive auto-shutoff feature, cool-to-touch exterior, and quiet fan-only setting, suitable for tabletop use. The De’Longhi Mica Panel Heater is chosen as the "Best Energy-Efficient" heater for its ability to convert 100% of electricity into soft, radiant heat without a fan, and its silent operation, wall-mountable design, and ease of movement with 360-degree wheels. Finally, the Dyson Purifier Hot+Cool is presented as the "Best Purifier Combo," functioning as a three-in-one unit for heating, cooling, and air purification with a HEPA H13 filter, smart features, and app control, although its fan is described as weak and replacement filters are expensive.
The article also provides key considerations for purchasing an energy-efficient space heater, including room size compatibility, programmable features, remote control, and crucial safety functions such as automatic shutoff and tip-over protection. It explains the significance of BTU and watt ratings in determining a heater's effectiveness and electricity consumption. Various types of space heaters are briefly described: ceramic heaters use heated coils, infrared heaters warm objects directly, fan heaters use a metal coil and fan (which can be noisy), and radiant heaters use oil for slow, steady heat, suitable for areas like garages. The FAQ section clarifies that infrared heaters are generally the most energy-efficient and often the cheapest to run. It also advises that space heaters are best for supplemental, targeted heating in specific rooms, while a central HVAC system remains more efficient for heating an entire home.
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