What to look for
Choosing an electric blanket combines the intricacies of searching for great bed linens with a functional electrical device. Moreover, Joel Hawk, principal engineering manager for UL Solutions, which does third-party testing and certifications of electric blankets, said, "You can't always tell a lot just by looking at it. How well the internal heating elements work can be a mystery until you actually try them out." Here are some factors to consider when researching your purchase:
Third-party certification
"The number one recommendation from experts is to check that the blanket has been inspected by an independent testing laboratory, which ensures that it meets established safety standards," says Susan McKelvey, communications manager at the National Fire Protection Association.
This guide examined brands with UL, Intertek, or CSA certification, popular third-party safety certifications for consumer goods.
"This can be tough to tell with online purchases, but the product packaging should have a certifier logo printed somewhere on it," says Hawk. "That's an indication that a lab tested the product to make sure it meets a nationally recommended standard for similar products. Certification is voluntary, so if a product does not have it, you may be taking a risk."
Auto-shutoff
Another important safety consideration is an auto-shutoff feature or timer, which is useful should you want to sleep with your blanket. People always think of safety regarding electrical fires, said Hawk, but thermal burns from blankets set too high for too long are more common. Some heated blankets allow you to adjust the window of time the blanket remains on before auto-shutoff kicks in, so think about how long you will be using the blanket and whether you need flexibility in that feature.
Heat level
According to Hawk, national standards mandate that the surface temperature of a heated blanket may not exceed 149 degrees Fahrenheit, but our testing showed that most didn't even come close to being that hot. The temperature will be affected if a blanket is bunched up so that many wires converge in one place; however, it's best practice to lay a blanket as flat as possible and avoid doubling it. The blankets in our tests ranged from 3 heat levels to 12, so think about how sensitive you are to temperature and whether you want the ability to fine-tune it or are OK with simple controls.
Special features
Most blankets come with auto-shutoff standards, but others have features that make them compatible with wifi, so they can be controlled remotely or have dual temperature zones to accommodate more than one user at a time. Consider what you'll use and what is worth paying for. Some brands also offer wearable designs, battery-operated models for outdoor use, and foot pockets to keep feet cozy.
Materials
Most heated blankets are some form of polyester because it is inflammable and washable. But different blankets have different textures, so know if you want to cuddle up in something resembling flannel or feel cozier in a fleece or sherpa-style microfiber. The thickness of the fabric can also play a role: heavier blankets may make you feel too warm and are bulky to store, but too thin fabrics may have you noticing the heating wires.
Size
You want to consider not only the size and capacity of your blankets, which are available in throws and standard bedding sizes like twin, full, queen, and king sizes but also the cord. Shorter cords require you to use the blanket near an outlet and restrict movement. You'll also want to ensure the wires are evenly distributed throughout, especially in larger blankets, so you don't have cold spots.