Knowledge Builders

do hot water heater blankets save money

by Ms. Janis Ledner Published 6 months ago Updated 1 month ago

Water heater insulation could reduce standby heat losses by 25%–45% and save you about 7%–16% in water heating costs—and should pay for itself in about a year. You can find pre-cut jackets or blankets available from around $20.

Do hot water heater blankets really work?

Yes! Water heater blankets really work! They’re essentially an add-on feature that can be applied to any tank-style water heater to improve its energy efficiency. They’re also very easy to install. Do hot water heater blankets really work?

What kind of hot water heater should I get?

  • Rheem Performance Platinum 9.5 GPM Natural Gas High-Efficiency Tankless Water Heater
  • Rheem Performance Plus 8.4 GPM Natural Gas Indoor Tankless Water Heater
  • Rinnai High-Efficiency Plus 11 GPM Natural Gas Interior Tankless Water Heater

What should a hot water heater cost?

New hot water heater costs by type

  • Hot water tank cost vs. tankless. ...
  • Gas water heater cost vs. electric. ...
  • Direct vent vs. power vent water heater cost. ...
  • Propane water heater installation cost. Propane water heater installation costs $700 to $3,000 for a tank unit or $700 to $4,600 for a tankless unit.
  • Oil-fired water heater replacement cost. ...

Do water heater blankets save energy?

The less insulated your water heater is or the colder the climate you live in, the more an insulated water heater jacket can save you. Even with a newer, better insulated tank, a blanket can offer some savings. It’s estimated that with the typical tank, a cover can save you up to 17% on your energy bills.


Are heater blankets worth it?

Generally speaking, an insulated blanket could save you anywhere from 7% - 16% in water heating costs in the course of a year. It may not seem like much but considering that the cost of the blanket is anywhere from about $20.00 to $35.00 - it's a savings that could easily add up in time.

Do new water heaters need a blanket?

Most modern tanks don't need extra insulation. If you're wondering if you should wrap your hot water heater, check the R-value on your tank's sticker. This number indicates how well the material your tank is made of resists heat flow. The higher the R-value, the better.

What do water heater blankets do?

An insulation blanket, or water heater blanket, is exactly what it sounds like. It's a blanket that wraps around your hot water heater to keep it from losing heat. It also helps your water heater to maintain a consistent temperature.

How can I make my water heater more efficient?

How to Make Your Hot Water Heater More Energy EfficientTurn Down Your Thermostat. ... Invest in a Tankless Water Heater. ... Make Sure You're Using the Right-Sized Water Heater. ... Keep an Eye on Your Tank's Sediment. ... Insulate Your Water Tank and Pipes. ... Install in a Volt Timer. ... Use Less Hot Water.

Is a hot water tank jacket worth it?

Insulating hot water tanks and pipes will reduce the amount of heat they lose, making them more efficient and cheaper to use. Insulating with cylinder jackets and foam tubing is usually a straightforward DIY job and tends to pay for itself very quickly.

Do Rheem water heaters need blanket?

According to my test, and according to the manufacturers recommendations (Rheem, AO Smith), an insulation blanket is not necessary. If you have an old water heater that actually does get warm to the touch at the exterior, be very careful installing the insulation.

What is the R-value of a water heater blanket?

The U.S. Department of Energy recommends installing a water heater insulation blanket that has no less than an R-value of 8, but there are higher R-value rated blankets available.

Should I wrap my water heater in garage?

If your heater is located inside the house and in the rooms, your home heating is keeping it warm enough and you do not need any extra insulation. But if it is located in the attic or the garage, an insulated blanket will help retain heat and avoid energy wastage.

How do you install a water heater blanket?

1:353:05How to Install a hot water heater jacket - YouTubeYouTubeStart of suggested clipEnd of suggested clipThen use your tape measure a straightedge and scissors to cut the blanket to size be sure to cut itMoreThen use your tape measure a straightedge and scissors to cut the blanket to size be sure to cut it with the vinyl side up. The third step is wrapping and securing the blanket around the water heater.

How can I save on my hot water bill?

Money saving tips: ways to cut your hot water usageTo cut your heating bill, be sure to cut your water usage too. ... Speed up your showers. ... Walk away from the power shower. ... Use a dishwasher, but pack it full. ... Invest in a washing up bowl. ... Dial down the water temperature.

Does turning off water heater at night save money?

Here's the catch: Modern water heaters are well-insulated meaning there is very little heat loss. Although electrical rates vary, the experts say turning off the water heater at night will likely save about two dollars a month.

Does turning down your water heater save money?

Set too high, or at 140ºF, your water heater can waste anywhere from $36 to $61 annually in standby heat losses. Additional savings will be realized by the lower temperature for consumption (from water demand or use in your home, such as clothes washing, showers, and dishwashing). These may amount to more than $400.

Are water heater blankets required in California?

Storage water heaters do not need to have blankets anymore. The 2013 Standards required storage water heaters with efficiency levels equivalent to the minimum federal efficiency standard to be externally wrapped (i.e. water heater blanket) with insulation of R-12 or greater. This requirement has been deleted.

How do you insulate a water heater?

0:371:42How to Insulate a Hot Water Heater [Electric] - YouTubeYouTubeStart of suggested clipEnd of suggested clipSo you don't get scold is 125 Fahrenheit 52 degrees Celsius before wrapping the blanket around theMoreSo you don't get scold is 125 Fahrenheit 52 degrees Celsius before wrapping the blanket around the tank wrap the foil spacer around the top middle and bottom of the water heater. And then tape the

How do you make a water heater blanket?

1:233:00How To Make A Water Heater Jacket - YouTubeYouTubeStart of suggested clipEnd of suggested clipThe blanket around your water heater mark. Where it overlaps. Then use your tape measure a straightMoreThe blanket around your water heater mark. Where it overlaps. Then use your tape measure a straight edge and scissors to cut the blanket to size be sure to cut it with the vinyl side up.

How do you insulate an outdoor water heater?

There are two general choices. You can apply either pipe insulation, a material that's similar to wall insulation but it's made specifically for plumbing pipes, or heating wire and pipe tape. Apply the insulation materials to the plumbing pipes, ensuring that the pipe insulation is adhering tightly to the piping.

What is an Insulation Blanket?

It’s a blanket that wraps around your hot water heater to keep it from losing heat. It also helps your hot water heater to maintain a consistent temperature.

What affects the R value of a blanket?

The materials of the blanket affect the R-value, and so do the density and thickness. For a hot water heater in a room such as the garage or outdoor closet—a place that typically isn’t climate controlled—choose a blanket with a higher R-value.

Do water heater blankets help?

Hot water heater blankets also prevent hot water heater from losing heat to a cold room or outdoor closet. My grandfather, who was always very strict that we keep the doors closed during winter so as not to “heat the entire block,” would be very happy to hear that.

Is it worth replacing a hot water heater?

Depending on the age of your hot water heater, it may be worth it to replace your hot water heater instead of just insulating it. Most HVAC professionals recommend hot water heater blankets for older models of hot water heater, but installing a new hot water heater may be more cost- and energy-efficient in the long run.

Can you put insulation over 130 degrees?

Additionally, the Department of Energy warns not to set the temperature of any hot water heaters with insulation blankets over 130 degrees fahrenheit because you can overheat the blanket—which can potentially overheat the wiring. This is, of course, important for safety, but because you’re lowering the temperature of your hot water heater, ...

Do you need insulation blankets for hot water heaters in Phoenix?

But if you live in Phoenix, AZ and keep your hot water heater in your garage, it’s not as important to use an insulation blanket because the temperature difference isn’t as extreme. Before moving forward, make sure to check the warranty on your hot water heater to see if insulating it will void the warranty. If you are in need of ...

Can you wrap a hot water heater in insulation?

If you live in Minneapolis, MN and your hot water heater is in an unfinished basement or garage, then wrapping your hot water heater in an insulation blanket will save you money.

What is a Water Heater Blanket?

A water heater is a tank of water heated to a specific temperature, somewhere around 140 degrees Fahrenheit, on average .

How much does a heating blanket cost?

They are easy to install, requiring only a few tools such as a tape measure and utility knife! The average cost of a heating blanket is around $20 to $40.

What are Other Ways to Reduce Water Heating Costs?

In addition to a water heating blanket, other ways to reduce water heating costs in your home include:

How thick is a Frost King water heater blanket?

One of Amazon’s Choice picks for water heater blankets includes Frost King SP60 All Season Water Heater Insulation Blanket. It is 3” thick by 60” tall and 90” long, which allows it to fit nicely over larger tanks. It is light-weight (under 6 pounds) and features a superior 10R design, making it highly effective at saving energy. Easy to install, this blanket is durable and comes with an easy-to-follow instruction manual.

Why do water heaters have insulation?

All water heaters are equipped with some insulation level to help keep the heat inside the tank —the newer the model, the better the insulation. Water heater blankets were marketed in the 1970s to help older heating units retain warmth and energy. A water heater blanket (also known as an insulation blanket) is just what it sounds like!

How much water does a fiberglass blanket hold?

This specific fiberglass blanket with vinyl backing is designed for gas, oil, and electric units containing up to 60 gallons of water. It has an overall rating of 4/5 (5/5 for both presentation and ease of use, 4.9/5 for ease of installation, and 4.6/5 for value). Check it out online today at!

How old should a water heater be to replace it?

Depending on the water heater’s age (12 years or older), it is sometimes better to replace it with a newer model that is likely to be more cost- and energy-efficient over time! If the water heater is around 8 to 12 years old and in good condition, try using a water heater blanket.

Who Benefits The Most From Buying A Water Heater Blanket?

Virtually any home can benefit from having a water heater blanket, but there are definitely some that need one more than others. The homes that do best with these include ones that fit one or more of the situations below:

How does a water heater blanket save energy?

Water heater blankets make it easy to save on energy bills by trapping heat inside the heater. This reduces the amount of energy that needs to be used to heat up your water, and trust me, it adds up fast. A water heater blanket can help you drop your energy bill by as much as eight to 17 percent annually.

What is the R rating for a water heater?

The “R” rating for water heater blankets denotes the level of insulation that they provide. Most water heater experts agree that an R11 blanket is a good starting point. The higher the R rating, the more insulation your blanket will be able to provide. So if you’re given a choice between an R12 and an R15 blanket, choose the R15. It’ll provide better value for you.

How much does a water heater blanket reduce heat loss?

Depending on where you live, a water heater blanket can reduce heat loss by as much as 25 to 45 percent. This can significantly reduce the cost to heat your water, especially during the winter.

What is a water heater blanket?

A water heater blanket is a thick blanket covering that is meant to be wrapped around the heater. The blanket itself contains thick insulation material that is meant to help contain heat inside of the heater so it doesn’t have to work as hard to keep the water inside hot. Most of the time, you will be able to secure it over your water heater straps with the help of additional ties.

How long does it take for a water heater blanket to pay for itself?

To put it simply, buying a water heater blanket will pay for itself within the first year of use. By the second year of use, you will notice a significant drop in your bills and enjoy savings from then on.

How much does a water heater cover cost?

Water heater covers cost very little, but offer a lot of value. A typical water heater blanket will cost between $20 and $35. Installing it is usually a DIY project, so that means you can expect it to be free. If you want to get a professional handyman to install it, you should add an additional $60 for the visit. That’s the typical bare minimum fee for a handyman.

How Do You Install A Water Heater Blanket?

Look for a water heater wrap that comes in a kit. This will come with instructions to help you through the process.

What Kind Of Water Heater Wrap To Buy?

If you do decide that you want to purchase and use a water heater insulation blanket then the next step is to decide what kind to get.

Why do you need an insulated wrap on a water heater?

If you have an older water heater, an insulated wrap may be useful to keep it from working so hard which in the end may extend it's lifespan and help to reduce the amount of electricity or gas the water heater is using to keep the water inside of it hot.

Why do you need a water heater cover?

Some people call them water heater covers or wraps, but whatever you call them, the purpose is to keep the water heater tank warmer so that it doesn't have to work so hard to keep the water inside the tank hot.

How much does an insulated blanket cost?

It may not seem like much but considering that the cost of the blanket is anywhere from about $20.00 to $35.00 - it's a savings that could easily add up in time.

Do you cover the thermostat on a gas water heater?

If you have an electric or gas water heater - make sure not to cover the thermostat or the heating element control. Also - do not cover the drain valve, pressure reliev valve or the overflow drain tube. Additionally for a gas water heater - you want to make sure not to cover the flue, the air flow to the gas burner or the draft diverter.

Do newer water heaters need padding?

But newer water heaters are fairly well insulated and they wouldn't need the extra padding.

List of 11 Top-rated Water Heater Blanket Reviews

Many families consider the Frost King SP57/11C one of the top-rated water heater blankets on the market because of its high R-value and excellent heat retention capability.

What to Look for When Buying Water Heater Blankets

Buying an insulation blanket for water heater systems is not different from choosing a jacket for cold weather use. People will want to retain as much heat as possible. To do that, they must consider a few things before buying thermal insulation for their water heaters.

Should Water Heater Be Wrapped

The decision to insulate hot water tank depends on a few factors, including water heater age, temperature gradient, and water heater location.

What Size Water Heater Blanket Do I Need

Manufacturers of water heater insulating blankets size their products according to existing tank standard sizes. For example, one can pick a 40-gallon water heater shroud for a 30-gallon to a 40-gallon water heater.

How to Install a Water Heater Blanket

Installing a water heater blanket cannot be more straightforward than wrapping the material around the tank and securing the edges with water heater blanket tape. Here are the steps.

Can You Put a Blanket on a Gas Hot Water Heater

Yes, one can wrap a gas water heater with an insulating material. However, homeowners must observe caution when installing the gas water heater blanket. It is essential not to cover the burner assembly and smother the flame. It would also be best not to cover the water heater’s top section to promote more efficient exhaust egress.


The best water heater blanket empowers families to save up to 16% on their water heating bills, minimizing standby heat loss from their water heaters. The best products have a high R-value, excellent insulation materials, are thick, versatile, and fire-resistant.

What do Water Heater Blankets Cost?

Water heater insulation blankets will cost you between $30 and $60. The price can be higher or lower, depending on where you’re located and the time of year that you’re shopping for one.

Should You Wrap Your Hot Water Pipes?

Yes, you should wrap hot water pipes. Once the hot water leaves the tank, it travels through cool pipes which instantly start to lower the water temperature.

Can You Use Two Water Heater Blankets?

You could potentially use two water heater blankets at the same time, provided you don’t cover the controller, anode rod, pressure release valve, or the top of the tank in error.

Do Modern Hot Water Tanks Need Insulation?

Hot water heaters less than 10 years old usually don’t require a heater blanket. If the water heater is in a cold mechanical (furnace) room, then insulating would benefit it.

Do Water Heater Insulation Blankets Work?

Yes, water heater insulation blankets work. Using a heater blanket that fits the size of your tank is important to maximize the benefits.

Why use smartjacket blankets in water heaters?

This product can reduce heat loss by as much as 40 percent and allows the family to enjoy more significant savings in the future.

How thin is an 80 gallon water heater blanket?

Also, the 80 gallon water heater blanket is relatively thin at only 5 millimeters. You will have to be extra careful in its installation. The included tape is not as sticky as I want it to be as well.

What is an insulating blanket?

With layers of foil and polyethylene bubbles, the insulating blanket is effective in trapping and regulating heat. Once installed, it effectively reflects and then sends the heat lost back into the water tank. With this feature, the water heater tank will retain more heat for a longer period.

How many gallon tanks can a water heater blanket hold?

Plus, this model is also fit for up to 60-gallon tanks. It is one of the most versatile choices that you should not miss when comparing your options. Also, this water heater blanket can effectively deliver its purpose of saving you much money because it can reduce your water heater’s recovery time.

What is a 4663 water heater blanket made of?

The M-D Building Products 4663 water heater blanket is made of vinyl-backed fiberglass. It is quite sturdy and durable, ensuring the user that it will last for a long time.

Why is my water heater so hot?

Low heater insulation is one of the primary causes of high energy bills. It happens because the old water heater is using more energy to work correctly. Especially in the winter months, it will use more power because it also loses much heat. It is why you need the best water heater blanket that can offer hot water heater insulation and improves its energy efficiency.

How long is a reflective foam water heater blanket?

As such, you can use it despite changes in tank type. Aside from that, the blanket is also long, measuring 48 inches x 76 inches.

Why is a water heater in a basement better than a thicker blanket?

It will do a better job of separating the cool air and the heat radiating from the tank than a thinner one. Because foil works primarily by reflecting the heat instead of relying on an air-pocket barrier, it needn’t be thick to function efficiently.

What is the best way to insulate a water heater?

One of the simplest methods is with the best water heater blanket. A water heater blanket (also known as a jacket or shield) insulates the tank, holding heat longer and keeping the machine from running as often.

What is the best insulation for a tank?

You may also find combinations of materials, such as fiberglass insulation with a foil face. This can offer the best of both worlds, using a thick, insulating layer of air pockets and radiating heat back into the tank.

How thick is a foil water heater?

Most foil insulating water heater blankets are less than 35 millimeters thick. This is another reason foil water heater blankets are so easy to work with.

What is the highest R value for a water heater?

The highest R-value you’re likely to find for a residential water heater blanket is R-11, but values of R-7 and R-8 are more common. It’s best to find the highest R-value blanket that fits your budget and your tank.

How many gallons of water does a tankless water heater hold?

Traditional tank-style water heaters typically store between 40 and 60 gallons of water, heating and reheating them as they cool. This isn’t a highly efficient way to supply a home with hot water, so If you’ve got one of these units—and aren’t up for switching over to a tankless system—increasing its efficiency can save you money.

How long is a water heater roll?

The roll measures 48 inches tall by 76 inches long, covering most smaller water heater tanks with ease. And, because it’s fiberglass-free, installers can work without masks or long sleeves.

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