Installing a 50-gallon water heater costs between $1,200 and $2,500 on average, including both the unit and professional labor.
The Home Depot offers traditional water heater tanks and modern tankless units, both powered by either gas or electricity. Depending on your selection, the average cost for standard tank installation is generally between $1,600 to $2,400. Tankless installation can range from $2,400 to $5,400.
A 50-gallon tank water heater typically lasts between 8 to 12 years, though well-maintained units can stretch to 15 years. The exact lifespan depends heavily on your local water quality, how often you flush the tank, and the condition of the sacrificial anode rod.
Professional labor costs for installation make up over half of the total cost of a new water heater. In general, tankless water heaters are more expensive to install than storage tank models, particularly if you're replacing a tank model with a tankless one because of the additional labor needed.
Traditional tank water heaters last 8 to 12 years, while tankless models typically last 15 to 20 years. Lifespans vary greatly depending on water quality, unit design, and whether you perform regular maintenance like flushing the tank and checking the anode rod.
Gas tankless water heaters installed by December 25, 2025, might qualify for a $600 federal tax credit. The government is offered this 30% credit through December 2025 to help cover the cost of the unit and its installation. This tax credit comes from the 25C Energy Efficient Home Improvement Tax Credit program.
The longest-lasting water heater brands are Bradford White and Rheem (specifically the Marathon series). Bradford White is favored by plumbers for professional installations and longevity, while the Rheem Marathon uses a unique fiberglass tank backed by a true lifetime warranty.
A standard tank water heater installation takes 2-4 hours for most plumbers. This includes removing the old unit, installing the new water heater, and connecting all pipes and electrical components.
A 10-minute shower typically uses 50 gallons of water if you are using an older, inefficient showerhead (rated around 5 Gallons Per Minute - GPM). With a standard modern showerhead (2.5 GPM), it would take a 20-minute shower to reach 50 gallons.
Stores like Home Depot and Lowe's often include removal when delivering a replacement unit. This is the most convenient option, especially if the old unit is still in place and connected.
Some of the most reliable tank water heater brands in 2026 include Rheem, A.O. Smith, and Bradford White. These manufacturers have long histories of producing durable, efficient heaters with strong warranty coverage. Rheem is known for overall dependability and wide availability, A.O.
5 Signs That You Need a New Water Heater
This tax credit is effective for products purchased and installed between January 1, 2023, and December 31, 2025. Claim the credits using the IRS Form 5695.
Average Cost of Installation On average, the total cost of having Home Depot install a new water heater ranges between $1,000 and $5,000. This estimate usually includes the price of the unit, labor charges, and necessary fees such as delivery, permits, and inspections.
Key signs your water heater is failing include active leaks, rust-colored water, loud popping noises, and a lack of hot water. If your unit is over 10 years old or requires frequent repairs, it is likely nearing the end of its lifespan.
A 50-gallon tank water heater typically lasts between 8 to 12 years, though well-maintained units can stretch to 15 years. The exact lifespan depends heavily on your local water quality, how often you flush the tank, and the condition of the sacrificial anode rod.
Keep the top of the tank free of dust, debris and flammable products such as paint, gasoline, solvents or adhesives. Also, never use these products near a water heater or any other natural gas or electric appliance because vapors from flammable liquids can ignite.
If a standard showerhead is fitted, it will use around an extra half a gallon each minute, accounting for a 25-gallon emittance every 10 minutes, or 50 gallons throughout a 20-minute shower. *1 gallon = 4.54 litres.
We recommend going with Rheem, specifically for the Professional Series with 8 Year Warranty.
Excessive Water Pressure: High pressure stresses your system and shortens its lifespan. A pressure-reducing valve can help. Undersized System: A unit that's too small for your household's demand works harder and wears out faster. Proper sizing during installation is critical.
There isn't a single "number 1" model, as the ideal water heater depends on your home's setup, but top-rated brands dominating the market include Rheem (best overall tank/tankless) and A.O. Smith (best for durability and commercial-grade units).
For the 2025–2028 tax years, individuals age 65 or older by the end of the tax year can claim an additional $6,000 deduction ($12,000 for married couples) under the "One, Big, Beautiful Bill". This deduction requires a Modified Adjusted Gross Income (MAGI) below $75,000 for individuals ($150,000 joint) and is available regardless of whether you itemize or take the standard deduction.
The most overlooked tax break depends on your situation, but the Saver’s Credit (Retirement Savings Contributions Credit) and out-of-pocket charitable/medical expenses consistently top the list. These breaks reduce your tax bill dollar-for-dollar without requiring you to itemize.
Tankless gas water heaters that meet the DOE's 2026 efficiency thresholds can qualify for up to $300 in federal tax credits, while high-efficiency electric water heaters may offer a slightly lower amount.