Plumbers typically charge $ 𝟐𝟎𝟎 to $ 𝟏 , 𝟎𝟎𝟎 for labor alone to install a standard water heater. Including the unit, permits, and disposal of the old heater, the total average cost ranges from $ 𝟏 , 𝟎𝟎𝟎 to $ 𝟑 , 𝟎𝟎𝟎. The exact price depends significantly on the type of unit and your home setup:
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.
The average labor cost to replace a hot water heater ranges from $150 to $1,900, with most homeowners paying $300 to $800 for standard installations. Research from Homewyse's 2025 cost calculator shows plumbers charge $45 to $200 per hour, and projects typically take 1 to 6 hours depending on complexity.
Installing a 40-gallon gas water heater from Lowe's typically costs $1,100 to $2,000 total, including the unit, labor, and materials. The physical heater costs between $450 and $800, while professional labor, permits, and connecting pipes add another $650 to $1,200.
Professional installation costs to replace a water heater
The more hours of electrical, carpentry and plumbing work that are required for your installation (for example, installing new electric, water or gas lines or drywall), the higher your total water heater replacement cost.
If there are no issues or complications, a licensed plumber should be able to complete the process in 2-3 hours. Here's what to expect when buying and installing a new water heater. Consultation with licensed professionals.
The Home Depot strongly recommends that you use an experienced, licensed plumber to install your new water heater, because they will know the required codes to complete a safe and compliant installation.
The "best" water heater depends on your preferred fuel type and whether you want a traditional tank or a tankless system. Master plumbers and consumer experts consistently rank Rheem, A. O. Smith, and Bradford White as top overall brands.
A standard tank water heater should generally be replaced every 8 to 12 years, while tankless models typically last 15 to 20 years. You should consider upgrading if your tank is over 10 years old, or if you notice rust, leaks, or frequent breakdowns.
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.
Replacing a 55-gallon water heater costs between $1,500 and $3,500 on average, including both the new unit and professional installation. The exact price depends primarily on your fuel type, building code upgrades, and permit requirements.
Naturally, tanks that heat more gallons of water typically have a higher price point, so the larger the tank size, the more you can expect to pay. For example, the average 40-gallon water heater installation cost runs between $1,000 and $2,500, while its 80-gallon counterpart runs between $2,650 and $3,910.
In some cases, if your water heater leaks or doesn't heat up, you may be able to repair the existing unit. But it's helpful to start by determining the expected life of the appliance. The average life expectancy of a water heater is about 8 to 12 years.
Lowe's typically charges between $600 and $1,850+ for labor to install a tankless water heater, with total project costs (unit + installation) often ranging from $1,500 to over $3,000 depending on complexity. Installation generally requires purchasing the unit and labor together, with final, precise quotes provided after an professional assessment.
Lifespan: Tankless systems often deliver 15 to 20 or more years of service with proper care, while traditional tank systems typically provide 8 to 12 years of reliable operation.
A 40-gallon water heater costs between $400 and $2,000 for the unit alone, depending on the fuel type and features. Including professional installation and permits, the total cost typically ranges from $800 to $3,000+. Electric models are cheaper than gas, but installation requirements vary.
If your heater is showing signs like leaks, rust-colored water, inconsistent temperatures, or increased energy bills, replacement is often the most economical solution. Rheem recommends beginning replacement planning around year 10 to maintain reliable performance and avoid unexpected issues.
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).
Both Rheem and Bradford White are top-tier water heater brands, but they cater to different buyers.
The most efficient hot water heater is a Heat Pump (Hybrid) Water Heater. They draw ambient heat from the surrounding air to warm water rather than generating it directly, reducing hot water electricity consumption by up to 70% to 80% compared to standard electric tanks.
Plumbers most highly recommend Bradford White, A.O. Smith, and Rheem. These brands are heavily favored because they are highly reliable, have readily available replacement parts, and use superior internal components compared to budget models.
If the project is as simple as replacing an old water heater with a new one, a handyman can likely do it with no trouble. However, converting a gas water heater to an electric one or putting in specific wiring and framing for the water heater will likely require the skill set of a licensed professional.
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.