How Much Does Water Heater Replacement Cost? [2025 Data]
The average cost for a water heater is $1,327, but it can range between $1,807 and $882. Your pro can discuss tank or tankless systems and if you need any additional plumbing upgrades.
Water heater replacement costs range from $882 to $1,807, with the average cost being $1,327. Your total price depends on whether you’re doing a simple one-for-one swap or a detailed upgrade, like to a tankless system. Additional cost components include the water heater's size and labor costs.
Water Heater Replacement Cost Factors
Check out these cost factors to consider when replacing your water heater.
Tank vs. Tankless Water Heaters
A traditional tank-style water heater stores water in a large tank that holds anywhere from 20 to 100 gallons. If you’re like 90% of households, you have a tank hot water heater sitting on a concrete pad in a basement, laundry room, or utility room. In comparison, a tankless water heater is the size of a small suitcase, has a coil system for heating water, and is usually mounted on the wall. Your water heater installation pro can help you decide which type of water heater is best for your replacement.
Tankless Water Heater Replacement Costs
Is a tankless water heater worth it? The cost to replace a tankless water heater ranges from $1,400 to $3,900. Though it's a higher upfront investment than a traditional water heater, a tankless unit can provide significant energy savings and reduce your energy bills over its 20-year life span.
Keep the ongoing maintenance for the unit in mind when making a decision. For example, the cost to repair a tankless water heater is often higher than what you’d pay to repair a tank water heater, often between $100 and $1,300. Repairing a tank heater costs between $100 and $500. Still, the pros of a tankless water heater often outweigh the drawbacks.
Tank-Style Water Heater Replacement Costs
A tank-style water heater is a conventional option, featuring a large tank that stores and constantly heats a supply of water for the home. These units are less expensive to install, though costs can range from $600 to $2,500 depending on tank size.
Cost to Convert Tank Water Heater to Tankless
If you’re converting a tank system to a tankless system, you may pay significantly more for labor because the job can take twice as long and include replumbing to the appropriate mounting area.
Size
Hot water heaters come in different sizes, measured by gallons (for tank-style systems) or gallons per minute (for tankless systems). The total amount of your water heater replacement cost will largely depend on the size of your new water heater, and that will depend on the size of your household. Your water heater installation pro can help you determine what size you need, but below you can get a rough idea:
| Hot Water Heater Size (Gallons) | Average Cost, Installed | Household size |
|---|---|---|
| 30 | $700–$2,100 | Small households of 1 or 2 people |
| 40 | $800–$2,300 | Small to medium household, between 1 and 4 people |
| 50 | $800–$2,500 | Medium to large households between 3 and 5 people |
| 75 | $1,100–$4,000 | Large households of 4 to 6 people |
| 80 | $1,300–$7,500 | Large households and households with high-demand appliances |
Brand
Like with many other home systems, the brand of water heater you choose can play a role in your overall water heater cost.
| Water Heater Replacement Brands | Average Cost |
|---|---|
| Rheem® | $600–$2,300 |
| A.O. Smith® | $800–$3,500 |
| Bradford White® | $400–$3,000 |
| Kenmore® | $350–$1,000 |
| Whirlpool® | $350–$1,500 |
Venting System
Electric water heaters generally don’t need venting, but gas or propane water heaters do. There are two types of venting: direct or power. Direct-vent heaters, which use a passive venting system, are less expensive and use an exhaust pipe or chimney. Power-vent heaters are more expensive and use a fan or blower plus electricity.
In general, expect to spend an additional $300 to $600 on a power-vent unit, plus $300 to $500 for the electrical work.
| Venting System | Venting Route |
|---|---|
| Direct | Exhaust pipe or chimney |
| Power | Fan or blower—costs $500–$1,000 more than other options |
Labor Cost to Install Water Heater
Labor is a significant part of a hot water heater replacement—usually accounting for around 50% of your total—but costs vary based on how long the job takes. In general, plumbers cost $45 to $200 per hour, while electricians cost $50 to $100 per hour. Expect the following average price ranges for labor alone:
Replacing a tank-style water heater: $150–$450
Replacing a tankless water heater: $600–$1,850
Converting a tank-style water heater to a tankless system: up to $2,500
Labor may also depend on the cost of living where you live and the pro’s experience level.
Permits
Permits for a hot water heater replacement usually cost between $25 and $300, depending on the extent of the work and your local laws. At the very least, you’ll need a permit to install a gas appliance or alter plumbing and electricity. Permits for connecting your home to natural gas before the water heater replacement cost an additional $50 to $300. This is one area where installing a gas versus electric water heater is less expensive in most cases.
Location
You’ll spend more on water heater installation costs if you’re replacing a water heater in a difficult-to-reach area. For example, it will cost more if your contractor has to carry the unit up or down multiple staircases or maneuver it into tight areas.
Relocating your water heater costs more, falling at about $150 to $3,400, depending on the complexity of the move. If you choose a tankless unit, the installation location could also change, with additional costs for new venting, plumbing, or small carpentry projects. Your geographical location will also play a role, as labor costs in more expensive areas are usually higher to keep in line with the cost of living.
Water Heater Replacement Cost by Type
Most electric and gas water heaters cost between $550 and $1,500, but the unit type will significantly impact your cost. A light-duty commercial heater is more durable but costs about $1,000 more than a residential unit.
Here’s what you can expect for each type of water heater.
| Type of Water Heater | Average Cost | Best For |
|---|---|---|
| Electric | $600–$3,500 | Small apartments |
| Gas | $700–$2,700 | Areas with high electricity costs |
| Propane | $700–$2,500 | Rural or inaccessible areas |
| High Efficiency | $1,500–$3,000 | Energy savings |
| Indirect | $1,200–$3,500 | Flexible fuel source |
| Solar | $1,700–$5,500 | Energy efficiency in sunny climates |
| Hybrid Heat Pump | $1,200–$3,500 | Energy efficiency in garages or basements |
Additional Water Heater Replacement Costs to Consider
The installation is usually simple because the new unit already fits in the space, but if not, you’ll need additional work, leading to extra costs.
Hiring an Electrician
If you have to do any extra electrical work, expect to spend $50 to $130 per hour to hire a licensed electrician. This expense may be particularly high if you’re upgrading to an electric tankless model. These units use 120 to 160 amps, so you might have to upgrade your electrical service to 200 amps or more.
Additionally, If you're converting from one fuel source to another, you’ll often need additional electrical wiring. Most homeowners spend $500 to $1,000 installing a new electrical line and a sub-panel if necessary, and total electrical wiring costs can be upward of $2,300.
New Gas Line
Gas line installation costs an average of $260 to $820, but you can spend upwards of $1,500 switching from an electric water heater to a gas water heater. The gas line transports gas from the outdoor supply system to your unit.
Most of the time, if you’re replacing an old gas water heater with a new one, you can use your existing gas line. However, you may need to install a new gas line if:
You’re moving the location of your water heater.
You’re switching from an electric water heater to a gas water heater.
You’re installing a brand-new gas water heater.
Your existing gas line is damaged.
New Water Line
If your water heater installation requires a new water line, expect to spend an additional $400 to $2,000. You may need a new water line if you’re relocating your water heater, you’re installing additional POU water heaters or your existing water line is damaged.
Expansion Tank Installation
Installing a water heater expansion tank costs $90 to $350. This is often a requirement in new construction and advisable in areas with freezing winters.
Water expands when it’s heated and when it freezes. If you’re using a traditional tank water heater and have a closed plumbing system, this expansion can potentially damage your plumbing and put stress on your pipes—particularly when numerous appliances start at once or there’s a spike in demand. A water heater expansion tank will literally take the pressure off.
Warranties
Some water heaters come with a manufacturer’s warranty, but your contractor may offer additional coverage that further protects your investment for about $100 to $300. Sometimes, the added coverage even includes free inspections. Check the warranty of your current water heater to see if it covers repairs or replacements.
Drywall Installation
Sometimes, a contractor needs to open up a wall to properly install a replacement water heater or run the plumbing and electrical lines necessary for the installation. Drywall installation cost is $1,000 to $3,000 or $1.50 to $3 per square foot.
Water Heater Removal
Removing your old water heater and hauling it away costs $100 to $500, depending on your contractor’s hourly rate. If the water heater is in an inaccessible area or is difficult to remove, costs will push toward the high end.
Water Damage
A flooded basement is one of the most unfortunate ways to discover you need a new water heater—but sometimes things happen. Generally, water damage repair costs $3.75 to $7 per square foot, with the average homeowner spending $1,300 to $5,550. Prices can push even higher if you need to pay for mold remediation. A local water damage restoration service can diagnose the severity of the issue and start making repairs.
Signs It’s Time to Replace a Water Heater
First, rush to call an emergency plumber if your unit is displaying any of the signs your water heater is going to explode.
The average water heater lasts about ten years, though certain high-efficiency models can last more than 20. Luckily, severe water damage usually isn’t the first sign that your water heater is about to fail.
Discolored water coming from the tap when you run hot water
Water leaking from or pooling beneath your water heater tank
Unusually loud popping, banging, or rumbling sounds coming from your water heater
You're running out of hot water faster than normal
No hot water at all
Tepid or lukewarm water
A metallic taste in your water
Rising utility bill costs
DIY Water Heater Replacement Costs vs. Hiring A Pro
Simply put, it’s not a good idea to install a water heater on your own—nor is it even legal in most cases. Regardless of the legalities, the list of what can go wrong with DIY water heater installation is enormous. Something as simple as over-tightening a gas control valve can cause a gas leak and lead to a fire or carbon monoxide poisoning. For this job, skip the potential hazard and hire a water heater installer near you.
How to Save On Water Heater Replacement Costs
Replacing a water heater is often an emergency expense, so it’s not exactly the most budget-friendly project. Fortunately, there are a couple of ways you can save a little money on hot water heater costs.
Repair don’t replace: Water heater repair costs range from $230 to $1,000, and it could be a simple fix for something small like a valve replacement. For example, replacing a gas valve on a hot water heater costs between $150 and $500.
Keep the same type of water heater: Reduce installation costs by replacing it with a similar model, eliminating the expenses of switching fuel sources.
Purchase water heater directly: Instead of buying your hot water heater through your contractor, purchase it directly, if possible.
Schedule during off-hours: Some contractors charge more to work after hours or on weekends or holidays. You can save some money by scheduling a weekday replacement during typical work hours.
How Angi Gets Its Cost Data
Home is the most important place on earth, which is why Angi has helped more than 150 million homeowners transform their houses into homes they adore. To help homeowners with their next project, Angi provides readers with the most accurate cost data and upholds strict editorial standards. We’ve surveyed over 30,000 real Angi customers about their project costs to develop the pricing data you see, so you can make the best decisions for you and your home. We pair this data with research from reputable sources, including the U.S. Bureau of Labor Statistics, academic journals, market studies, and interviews with industry experts—all to ensure our prices reflect real-world projects.
Want to help us improve our cost data? Send us a recent project quote to costquotes@angi.com. Quotes and personal information will not be shared publicly.
Frequently Asked Questions
Tank-style hot water heaters need replacing about every six to 15 years, while a tankless model can last 20 years or more. Over time, water heaters fill up with sediment that can start causing issues. If your unit is ten years old, start thinking about a possible replacement. Flushing your tank-style water heater annually and having routine maintenance done can increase the life span of the unit.
While uncommon, it's possible for a water heater to freeze due to cold temperatures. A frozen water heater is caused by standing water inside the tank or unit freezing and expanding. When this happens, the interior of the water heater is likely to be destroyed beyond repair. It's more likely that a water heater will freeze if it's installed outside. However, manufacturers generally include special freeze protection for the tankless units that are designed for outdoor use. Be sure to drain your water heater before a prolonged winter vacation to reduce freezing risks. Adding blanket insulation as part of preventative maintenance on a hot water heater can also help.
The time it takes to replace a water heater depends on the complexity of the job. Expect your contractor to spend:
One to three hours on a standard tank-style water heater replacement
Two to three hours on a tankless water heater replacement
Four to six hours replacing a tank-style water heater with a tankless water heater
One hour for each additional parallel or point-of-use water heater
Your project will take longer if you’re switching fuel sources, upgrading to tankless, or relocating your water heater.
Replacing an older water heater that requires frequent repairs is almost always worth it. If your fixture is nearing the end of its life span—around 10 to 20 years, depending on the model—replacing a water heater might save you money in the long run. Replacing a water heater generally costs less than repairing a fully flooded basement, and some high-efficiency units pay for themselves thanks to energy savings. Plus, installing a new water heater and upgrading to tankless will boost your home value and make your hot water more readily available, improving comfort for your family.
