Can you leave a heated blanket on all night?
That depends on the blanket, and it is a specification rather than a matter of opinion. Every US-market model here shuts itself off automatically, but the interval varies: our top pick lets you choose anything from one hour to twelve, the Bedsure models run to ten hours, and some budget throws cut out after two. If you want warmth through the night, read the auto-off range before anything else — a blanket that stops after ninety minutes is a sofa blanket whatever the box says. Manufacturers design the shut-off deliberately, so overriding it is not something to look for.
Can you put a heated blanket in the washing machine?
Almost always yes, once you unplug the controller from the blanket and set it aside. The fabric and the heating wire are built to survive a gentle cycle; the electronics are not. Check the listing for a detachable cord before you buy — it is the single detail that decides whether a blanket is genuinely washable. Wash cold or warm on a gentle cycle, and dry on low or air-dry. Heavier sherpa and faux-fur throws take considerably longer to dry than flannel ones, which is worth knowing if you only own one.
How much electricity does a heated blanket use?
Very little, and that is the whole point of the category. Working from a stated assumption — about 100 watts for a throw, eight hours of use, and roughly 17 cents per kilowatt-hour — an evening comes to around 14 cents, with a full-size bed blanket costing roughly double. We show the arithmetic rather than a headline figure because manufacturers rarely publish wattage, so every number in this category rests on an assumption somebody made. Compared with raising the thermostat for a whole house, it is not close.
Should I get a throw or a full-size blanket?
Ask where you will use it. A 50×60″ throw is one person on a sofa or an armchair, folds into a cupboard, and costs $27 to $45. A queen at roughly 84×90″ covers a bed for two, costs $60 to $71, and is awkward on a sofa. If you are buying for the bed and you share it, the dual-zone question matters more than the size one. If you are unsure whether you will use a heated blanket at all, buy the cheap throw first — almost nobody regrets that order.
Are heated blankets safe?
Modern ones are built around the assumption that they will be left on: automatic shut-off is standard, and the marks to look for are ETL or UL certification, with overheat protection stated explicitly on some models. Two of our picks go further and name their testing programme — one cites an Intertek-recognised laboratory and seventy-four tests, another states seventy-eight independent safety tests. The practical rules are the boring ones: don't fold or tightly tuck a blanket while it is running, don't sleep on top of one that is meant to go over you, keep liquids away from the controller, and replace any blanket with a frayed cord or a scorched patch rather than repairing it.