Water Heaters

Make Sure It Fits
Compare the dimensions of your new water heater with the space you have available for the water heater at home.
Tank Water Heaters
Tankless Water Heaters
Tankless Gas Water Heaters Tankless Gas Water Heaters

Quickly supplies endless hot water to your home

Tankless Electric Water Heaters Tankless Electric Water Heaters

Supplies endless hot water on demand and only as needed

Point-of-Use Water Heaters Point-of-Use Water Heaters

Provides instant hot water as it flows through the unit

Water Heater Parts & Accessories Shop All
The Home Depot Protection Plan

For a flat rate of $69

The Home Depot Water Heater Protection Plan extends the Labor Coverage for an additional 5 years beg

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Protection Plan

Keeps Your Covered

Be protected with The Home Depot Water Protection Plan and have peace of mind for years to come

How-To Guides
Find the Water Heater That Fits Your Needs

Before you start shopping for new water heaters, make sure you do your homework. There are several factors to consider when choosing the best water heater for your family’s needs – gas or electric, tank or tankless. Think about what size tank you’ll need. This will depend on the size of your household and how many gallons of water are used at peak times. Size does matter. Note that your new 50-gallon water heater tank may take up more space than your old one, because of new regulations on insulation. 

Energy Efficiency

One of the first things to consider when shopping for a hot water heater is energy efficiency. The bottom line is: if it saves you energy, it saves you money. According to the Department of Energy, heating water accounts for about 18 percent of our home energy use. A more energy efficient unit may cost you more at purchase, but will save you more money in the long run. It may also qualify you for a rebate. 


Tank Water Heaters vs. Tankless Water Heaters

Water heaters with a tank are the most popular. Storage tank water heaters require little maintenance and are less expensive than tankless water heaters. On the downside, they use more energy. If you don’t use that stored hot water, it cools down and has to continually be reheated.

Tankless water heaters are also called instantaneous or on-demand water heaters. Just like the name implies, there’s no tank, so it requires less space. A coil system heats the water as needed, which saves on energy bills. Tankless gas water heaters and electric tankless water heaters are more expensive up front and may require you to upgrade your electrical systems. Also, if you have a larger home, you may need more than one. 

Water Heater Capacity

Standard residential tank water heaters can range in size and capacity. Tank water heaters range from 20 to 80 gallon capacities. But, you must also consider the first hour rating. That’s how much hot water you get from your water heater in its first hour of operation. Your tank’s first hour rating or FHR will be printed on the tank. The FHR should be very close to how much water your family uses at its peak time, perhaps in the morning when the shower is running, along with the dish washer and washing machine. 

Water Heater Warranties

Find out what type of warranty is offered for your hot water heater. You’ll want to take advantage of the longest warranty possible. The average lifespan of a residential water heater is 10 to 15 years. A well-maintained commercial water heater should last 20+ years. 


The Home Depot Water Heater Protection Plan extends the Labor coverage for an additional five years beginning after the Manufacturer’s Labor Warranty ends. Think of it as an extension of the manufacturer’s labor warranty. When the manufacturer’s labor warranty ends, the Water Heater Protection Plan kicks in and continues for five additional years. 

Whichever hot water heater system you choose, make sure you have the right water heater parts and accessories before you get started, including water heater drain pans, water heater blankets, expansion tanks, pipes, fittings and insulation. We also have a selection of solar water heaters and hybrid water heaters to choose from. 

Installing water heaters can be intimidating, so let us do it for you. Check your local store or homedepot.com for details on delivery and installation on select brands of water heaters. Because, no one likes cold showers!Paragraph Text