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Tank Water Heaters

Tankless Water Heaters

Tankless Gas Water Heaters

Quickly supplies endless hot water to your home

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Tankless Electric Water Heaters

Supplies endless hot water on demand and only as needed 

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Point-of-Use Water Heaters

Provides instant hot water as it flows through the unit

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Water Heater Parts & Accessories Shop All

The Home Depot Protection Plan

The Home Depot Protection Plan

keeps you covered

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

For a flat rate of $69

The Home Depot Water Heater Protection Plan extends the Labor Coverage for an additional 5 years beginning after the Manufacturer's Labor Warranty ends

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!


The Cash Acme FVX Temperature and Pressure Relief The Cash Acme FVX Temperature and Pressure Relief valve is designed for commercial and domestic hot water heating applications. It features a bronze body stainless steel spring furnished with silicone seat disc and EP diaphragm as well as a test lever. The FVX has a coated thermal element to protect ...  More + Product Details Close
The Cash Acme FWC Pressure Relief Valves are The Cash Acme FWC Pressure Relief Valves are designed for Commercial and Industrial application including thermal expansion protection static pressure and over-pressure relief very low capacity pump relief and other uses of similar nature where tight shut-off is required. The Cash Acme FWC valves are small low-cost relief valves suitable ...  More + Product Details Close
The Cash Acme NCLX-5 Temperature and Pressure relief The Cash Acme NCLX-5 Temperature and Pressure relief valve is designed for protection of Hot Water Heater and Storage tanks. The NCLX-5 incorporates an inert thermal element coating that provides effective isolation from mineral deposits (liming). Cast bronze body with male inlet and female outlet brass and stainless steel internal ...  More + Product Details Close
The Eccotemp EL22 Liquid Propane Tankless Water Heater The Eccotemp EL22 Liquid Propane Tankless Water Heater is the newest outdoor model of the Eccotemp tankless line. The EL22 is the perfect solution for all the hot-water needs of a standard home or apartment with multiple bathrooms as well as smaller commercial applications. This model has a sleek black ...  More + Product Details Close