Save Energy and Cut Utility Bills with a Water Heater Blanket • Everyday Cheapskate

Ever feel like your water heater is running a secret marathon you didn’t sign it up for? If it’s working overtime just to keep your showers hot and your dishes clean, it might be time to give it a little TLC—and no, I’m not talking about wrapping it up in your favorite fleece throw. Enter the water heater blanket: a simple, low-cost solution that wraps your heater in cozy insulation, keeping the heat where it belongs—and your energy bills where they should be.

Think of this as your water heater’s version of a winter coat—practical, snug, and guaranteed to save you some cash. Whether your tank lives in a chilly garage or it’s just been feeling a little old and leaky, I’ve got the scoop on when, why, and how a water heater blanket can help you out.

Using a water heater blanket can be a smart way to conserve energy, but it depends on a few key factors. Let’s break down when it’s helpful, whether it applies to both gas and electric heaters, and how you can check if your water heater is losing heat through its walls.

When is it Helpful to Use a Water Heater Blanket?

A water heater blanket is beneficial if:

Your Heater is Old or Poorly Insulated.

If your water heater is over 10-15 years old, it likely has less insulation than newer models. This means heat can escape through the tank walls, causing the unit to work harder to maintain temperature.

The Water Heater is in an Unheated Space.

A blanket can reduce heat loss if your water heater is installed in a garage, basement, or other cold space. Water heaters in these environments must fight against external cold air, leading to higher energy consumption.

You Notice Long Heating Cycles.

If your water heater seems to be running frequently to maintain its temperature, it could indicate heat loss. Wrapping it in a blanket helps reduce those cycles and saves energy.

MORE: How to Conduct a Home Energy Audit: DIY Step-by-Step Guide

Is a Blanket Advisable for Both Gas and Electric Heaters?

Water heater blankets are suitable for gas and electric models but with a few considerations.

Electric Heaters

Since they don’t have combustion components, they are simpler to cover. Just wrap the blanket tightly around the tank, avoiding any access panels.

Gas Heaters

With gas models, you’ll need to be more cautious. Do not cover the top of the heater or block the vent pipe, combustion air inlet, or pilot light. The blanket should also keep the thermostat and gas regulator clear to avoid any safety risks.

Many manufacturers label their heaters with insulation instructions; if in doubt, consult the manual or call the manufacturer to confirm that it’s safe to wrap.

How to check if the Water Heater is Losing Heat?

A quick way to test if your water heater leaks heat is by touching the tank walls.

If the surface feels warm to the touch, it’s losing heat, and insulation would help reduce energy loss.

If it feels cool, the existing insulation is likely doing its job, and a blanket may not be necessary.

You can also use an infrared thermometer to measure the tank’s surface temperature. If the blanket is significantly warmer than the room temperature, adding a blanket would likely improve efficiency.

MORE: Seasonal Window Care: Tips for Winterizing, Cleaning, and Maintaining Your Windows

Should You Use a Water Heater Blanket?

Using a blanket can significantly reduce your energy consumption if your water heater is older, in an unheated area, or feels warm to the touch. It’s generally an inexpensive way to prevent heat loss for both gas and electric models, as long as safety guidelines are followed for gas heaters.

By insulating your water heater, you’ll reduce standby heat loss and energy use, which translates to lower utility bills—without any extra effort on your part.

Will Just Any Extra Blanket Do The Job?

No. A regular household blanket lacks the proper insulation and fire safety required. Stick with a purpose-made water heater blanket for the best results.

You’ll want to buy a specific product called a water heater blanket—it’s made from insulation material designed to retain heat and is safe for use on water heaters. These blankets are typically made of fiberglass with a plastic or foil outer layer to prevent heat loss without posing fire risks.

Best Water Heater Blankets to Buy

You can find water heater blankets at:

Home improvement stores (Home Depot, Lowe’s)
Online retailers (Amazon, Walmart)
Utility companies (Some offer free blankets as part of energy-saving programs)

BEST INEXPENSIVE

US Energy Products Water Heater Blanket Insulation,"Non Fiberglass", Fits up to 80 Gallons Tank Industrial Strength, Commercial Grade, No Tear, Radiant Barrier Wrap for Weatherproofing

ALSO GOOD

SmartJacket SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic

BEST UPGRADE

Frost King SP60 All Season Water Heater Insulation Blanket, 3” Thick x 60” x 90”, R10

US Energy Products Water Heater Blanket Insulation,"Non Fiberglass", Fits up to 80 Gallons Tank Industrial Strength, Commercial Grade, No Tear, Radiant Barrier Wrap for Weatherproofing

SmartJacket SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic

Frost King SP60 All Season Water Heater Insulation Blanket, 3” Thick x 60” x 90”, R10

$34.00

$43.95

$64.93

Buy on Amazon

BEST INEXPENSIVE

US Energy Products Water Heater Blanket Insulation,"Non Fiberglass", Fits up to 80 Gallons Tank Industrial Strength, Commercial Grade, No Tear, Radiant Barrier Wrap for Weatherproofing

$34.00

Buy on Amazon

ALSO GOOD

SmartJacket SJ-80 5mm Polyethylene Water Heater Blanket Insulation, Fits 20-80 Gallon Tanks, Energy Star Certified, Easy to Install & Clean, No Fiberglass, Non-Toxic

$43.95

Buy on Amazon

BEST UPGRADE

Frost King SP60 All Season Water Heater Insulation Blanket, 3” Thick x 60” x 90”, R10

$64.93

Buy on Amazon

Best Inexpensive: US Energy Products Water Heater Blanket

US Energy Products Water Heater Blanket

The US Energy Products Water Heater Blanket is a durable, commercial-grade solution that fits tanks up to 80 gallons. With its industrial-strength, no-tear radiant barrier wrap, this blanket helps reduce heat loss by up to 40%—cutting your heating bills by around 9%. A great value for the price!

Save $4.88

US Energy Products Water Heater Blanket

Also a Great Choice: Prodex SmartJACKET Water Heater Blanket

Prodex SmartJACKET Water Heater Blanket

The Prodex SmartJACKET is an excellent option fitting both gas and electric water heaters, ranging from 20 to 80 gallons. It’s designed to be easy to install and clean, with no fiberglass—making it nontoxic and noncarcinogenic. It’s easy to install and maintain.

Prodex SmartJACKET Water Heater Blanket

Best Upgrade: Frost King SP60 All Season Water Heater Blanket

Frost King SP60 All Season Water Heater Insulation Blanket

For those looking to step up their water heater insulation, the Frost King SP60 is a top-tier choice. Designed for gas, oil, or electric heaters up to 60 gallons, this vinyl-backed fiberglass blanket delivers year-round insulation. It comes with a roll of plastic tape to help secure the wrap in place.

Save $3.80

Frost King SP60 All Season Water Heater Insulation Blanket

Question: Have you ever used a water heater blanket to reduce your energy bill? Share your experience or tips with us below.

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