8 Best Water Heater Blankets for Winter

In Home & Garden, Kitchen Accessories by cerilleLeave a Comment

After a thorough 3 week research and testing period, our testing team has narrowed down the best water heater blankets on the market to bring you our top 8 performers.

Testing and comparing features such as size, use of installation, material and efficiency and subsequent  impact on energy bills, we’ve put together a comparison table and detailed reviews highlighting the pros and cons of each.

Though all are among the best products in the UK market, the ESP Low-E® SSR “Non-Fiberglass” Up to 80 Gallon Water Heater and Armadillo Hot Water Cylinder Insulating Jacket – Revolutionary New Design Offers Improved Insulation stood out to use as our top performers.

ESP Low-E SSR “Non-Fiberglass” Water Heater – 94%


This high-quality water heater blanket by ESP incorporates 1/8” closed cell foam and boasts an efficient aluminium design. It comes with self-adhered foam spacers, aluminium foil seam tape, and can be used for bigger tanks for up to 80 gallons. So, if you have a big family, this water heater blanket is no doubt the best choice. Depending upon how you use it, this water heater blanket can cut your energy bills by up to 20%!

  • Can be used for bigger tanks of up to 80 gallons
  • Can save a lot on energy bills
  • Really high quality and efficient
  • Nothing!


EP50GRTJ Cold Water Storage Tank Insulation Jacket – 88%


This insulation jacket features one long panel and one short top panel that is wrapped around the sides. It prevents water from cooling down as well as freezing and turning into bacteria in extreme weather conditions. It’s manufactured from 50mm thick mineral wool fibre insulation.

We love how easy it is to install this jacket, and found it worked really efficiently, keeping the water hot for a decent length of time.


  • Easy to install
  • Efficient and keeps water hot for a good length of time
  • Small – not suitable for larger tanks


EC4818 : Hot Water Cylinder Jacket – 84%


This hot water cylinder jacket is made with 80mm thick mineral fiber wool and, depending on its use, it can offer up to 60% heat loss savings. This excellent jacket also has overlapping sleeves so that all plumbing pipes can easily pass between them for an easy yet good fit. It comes with two fixing straps and installation instructions – certainly one of the best water insulating solutions around.


  • Easy to use
  • Can be installed in minutes
  • Can offer great savings on your energy bill
  • Not as high quality as other blankets on the market


M-D Building Products 4663 R-6.7 Water Heater – 80%


M-D building products have always provided its users with the best quality products and this extraordinary water heater blanket is specially designed for oil, gas, or electric heaters to keep the tank water hot for a long time.

It’s an excellent fiberglass blanket which is vinyl backed and serves best in extreme weather conditions. Users can easily install this blanket with measuring tape, scissors, and tape, and it can be used for up to 60 gallon tank.


  • High quality from a reputable brand
  • Vinyl backed fiberglass blanket
  • Not suitable for larger, 80 gallon tanks


36″ x 18″ Hot Water Cylinder Lagging Jacket – 80%


This hot water cylinder lagging jacket will pay its price within 6 months after installation through savings from your utility bills. It has a 60mm thick lagging that is easy to fit, saves energy, keep the water warm for a long time. It comes in 4 panels that are wrapped around the hot water heater


  • Easy to install
  • 60mm thick lagging
  • 4 panels
  • Not suitable for a bigger 80-gallon tank


Frost King SP90A R3.5 Reflective Water Heater – 80%


Frost King SP90A Reflective Water Heater is one of the best double sided foil and fiberglass blanket. Its reflective value is up to 3.5 and its size is considerably 1 in. by 48 in. by 75 in. It serves a great deal in maintaining hot standby water in the water heater. While its quality is as best as other high-grade water heater blankets, it cannot be used for 60 gallon and above tankers.


  • Ideal for small sized water heaters
  • Best quality
  • Not suitable for large tanks


Armadillo Hot Water Cylinder Insulating Jacket – 78%


Armadillo hot water heater insulating jacket provides a non-toxic and non-allergic insulation solution with its 25mm thick foam and silver bubble foil foam. It is recommended to use for medium sized water tanks up to 45 gallons. There’s no need to hire a professional because this water heater blanket is simple and easy to install.

  • Comes in 3 sizes
  • Non-irritant insulation
  • Excellent quality
  • Only used for medium size water tanks


284431 Duck R6.7 Water Heatr – 76%


People looking for an efficient water heater should definitely consider this extraordinary water insulation blanket by Duck. It is best of its type if we compare the price range and quality, but is smaller in size than other water heater blankets. This water heater blanket by Duck measures 1.8 in. × 48 in. × 75 in. It has reflecting value of 6.7, weigh 6.3 pounds, fiberglass-free material, and a top for easy installation. It is definitely suitable for gas, electric, and oil water heaters.


  • Can be used for up to 60-gallon tanks
  • Fiberglass-free design
  • Flame-retardant
  • Heavy


Frequently asked questions

What exactly is a Water Heater Blanket?

As the name suggests, a water heater blanket is generally an insulated blanket that wraps around a water heater, and it can be referred to as a water heater jacket or cover. Water heater blankets follow the same principle as insulated ceilings, walls, floors, doors and windows in our homes.

When it comes to water heaters, a water heater blanket helps to maintain the heat of the water heater so it doesn’t need to work so hard to keep the water warm in the tank, and can thus help save energy and money.

What are the advantages and disadvantages of Water Heater Insulation Blankets?

If you have water heating in your home and haven’t installed a water heater blanket yet, we’d suggest you do it as soon as you can. Water heater blankets can seriously cut the cost of your gas bill. They save a lot of time, energy, and effort to heat the water in your tank again and again.

That being said, there is an upfront cost in the purchase of one, and they must be correctly and safely installed.

What should I look for when choosing a hot Water Blanket?

You’ve got to do some research to ensure you get the right water heater blanket for your property to ensure it provides the best insulation for your hot water tank.

Most modern water heaters come with new insulation options, therefore water heating blankets tend to be used more often for older water heater models, so check out whether you actually need one first!

Make sure to consider the blanket’s size, style and fabric, and definitely the safety certifications before buying your water heater blanket. Have a look at our top 8 and their detailed reviews for more info on the differences you get with different models.

What’s the approximate price range for Water Heater Blankets?

The price range of water heating blankets varies but you can pick up a decent one for between £40-£70.

What are the best small sized water heating blankets?

We’ve found the Frost King SP90A R3.5 Reflective Water Heater Insulation Blanket to certainly be the best small sized water heating blanket for home use. This foil insulation is well-designed, well-made and an excellent choice for water tank insulation. It also incorporates fiberglass into the blanket closing at both ends to ensure maximum insulation. We’d recommend it but check out our more in-depth review for more info.

What’s the best large-sized water heater blanket?

The Low-E Non-Fiberglass Water Heater Blanket is the best choice for an 80-gallon water heater. M-D Building has always provided its customers with the best, easy to use, and high-grade design blankets, therefore it’s certainly the best choice for people having a large 80-gallon water heater.

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