Silentnight Heat Genie Review: Warmth With No Plug Needed

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The Silentnight Heat Genie is a big, reversible fleece blanket with a layer of foil built into the middle, and it promises to keep you warm without a plug, a battery or a boiler. It doesn’t make any heat of its own, which is the first thing worth knowing, and also the reason it earns a place in a UK winter and power-cut kit.

With the heating off, or the power out, most households reach for an ordinary throw and find it isn’t quite enough. The Silentnight Heat Genie blanket is built to hold on to more of the warmth you’re already producing, with no running cost and nothing to fail. This Silentnight Heat Genie review covers how it works, what it’s good for and how to get the best out of it.

What the Silentnight Heat Genie Actually Is

Silentnight sells the Silentnight Heat Genie as a self heating blanket, which is a generous way of describing a 2.4m x 1.8m sherpa fleece throw: plush fabric on one side, sherpa fleece on the other, and a heat-reflecting foil layer sandwiched inside. Amazon lists it as a medium-weight winter blanket for adults, and it comes in Charcoal, Berry, Green, Natural and a faux fur Leopard finish. A two-pack is now available too.

There’s no element, no battery and no cable. The Silentnight Heat Genie blanket doesn’t add heat, it holds on to yours, which is a different trick and a more dependable one when the grid is having a bad night. One bit of housekeeping: this review covers the blanket only, so if you’re looking at anything else that uses the Heat Genie name, check the product title on the listing before you buy.

How the Silentnight Heat Genie Foil Layer Works

Your body gives off heat all the time, and in a cold room most of it drifts away before you notice it’s gone. A foil layer reflects part of that heat back towards you instead of letting it leave, which is the same principle as the shiny emergency blankets handed out at the end of a marathon.

The difference is where the foil sits. In the Silentnight Heat Genie it’s built inside the blanket, between the soft layers, so what you actually wrap yourself in feels like a blanket rather than a baked potato. The plush and sherpa fleece add ordinary insulation on top, and the combination is what Amazon buyers rate above everything else about it: warmth comes up more often in their reviews than any other feature.

It works with your own body heat, so it does its best job when you’re settled and wrapped up. Sitting on the sofa, reading in bed or riding out a power cut, it keeps hold of the warmth you’re producing instead of letting the room have it.

Silentnight Heat Genie Size, Colours and Care

At 2.4m by 1.8m, the Silentnight Heat Genie is a proper big blanket. Buyers describe it covering a double bed, stretching across a whole sofa for two, and doubling as a camping duvet, and Amazon lists camping as a recommended use. Being reversible means you can choose between the soft plush side and the sherpa side.

Care is easy. The listing says machine wash and tumble dry on low, so check the care label for the exact temperature before you wash it.

Where the Silentnight Heat Genie Earns Its Keep

Heating off to save money. Turning the thermostat down and wrapping up is a well-worn way to trim energy bills. The Silentnight Heat Genie blanket has no running cost at all, and Amazon lists energy saving among its features.

Cold rooms and older houses. Single glazing, north-facing rooms, a spare bedroom nobody heats: wrapping up in a blanket that holds on to your heat is easier than chasing the room temperature up.

Power cuts. This is where the Silentnight Heat Genie earns its place in a home emergency kit. When the heating and everything else stops, a blanket that needs no electricity and no battery is one of the simplest ways to stay comfortable, and it’s ready the moment you reach for it.

Bed and sofa. Buyers use it on the bed, across a sofa for movie nights and as a duvet when camping. It’s also a sensible extra layer for anyone who wakes up cold at night.

Camping, caravans and vans. Amazon buyers report using it in vans and while camping, and its size makes it as useful as a duvet on a chilly trip.

Silentnight Heat Genie vs an Electric Heated Throw

An electric heated throw produces heat, so it can warm you up from cold, but it needs a mains socket, a cable and a controller. The Silentnight Heat Genie works the other way round: as a self heating blanket it holds on to the warmth you make, so it needs nothing at all, works anywhere and costs nothing to run.

For a power-cut kit the choice is straightforward, because a blanket that needs no power still works when the power is off. For everyday sofa use with the heating turned down, plenty of households will find the Silentnight Heat Genie blanket does the job on its own.

Getting the Most From Your Silentnight Heat Genie

Wrap it close. Reflected heat only helps if the blanket stays near you, so tuck it around you rather than draping it loosely across your lap.

Start warm. It holds on to your body heat, so put a jumper on first and then wrap up, rather than getting under it already cold.

Made for adults. Amazon lists the recommended user as adult, so this is a blanket for grown-ups to wrap up in on the sofa, in bed or on a camping trip.

Our Verdict on the Silentnight Heat Genie

The verdict from this Silentnight Heat Genie review is simple. It’s a large, soft, easy-care self heating blanket that keeps hold of your body heat without a plug, a battery or a boiler, and it’s one of the easiest pieces of winter and power-cut kit to add to a home. To see how it’s rated by people who have bought one, check the reviews on Amazon.

What the Rest of the Team Think

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Frequently Asked Questions

Pros and Cons

Pros

• The Silentnight Heat Genie keeps you warm with no plug, battery or boiler, so it works when the power doesn’t
• A self heating blanket with a heat-reflecting foil layer on top of plush and sherpa fleece insulation
• 2.4m x 1.8m, big enough to cover a double bed or share on a sofa
• Reversible: plush on one side, sherpa fleece on the other
• Machine washable and tumble dry on low
• Five colours including a faux fur Leopard version, plus a two-pack
• Made by Silentnight, a familiar UK bedding brand
• No running cost, and nothing to plug in, switch on or forget to switch off

Cons

• The Silentnight Heat Genie blanket holds your body heat rather than producing any, so it works best when you start warm
• At this size it takes up some storage space