How Much Does It Cost to Repair a Water Heater?

Water heater repair cost breakdown

Depending on the repairs needed, you can expect to pay $45 to $150 an hour for labor and $15 to $400 in parts. However, some damages, such as leaks, may require a replacement.

For example, if water is in your water heater pan, your tank probably has a hole from rust or corrosion, and you'll have to get a new system. Water heater replacements typically cost around $880 to $1,800.

Here are the average costs for common repairs:

Water heater repair cost by type

Water heaters come in several types, with the most common being tank and tankless units, available in electric or gas models. Tank water heaters store hot water in a reservoir and are generally easier and cheaper to repair, while tankless units heat water on demand and often have higher repair costs.

Less common types, including hybrid heat pumps, sump pumps and waterless units, have specialized maintenance needs and price ranges for parts and repairs.

Tank vs. tankless water heaters

Tank water heaters maintain a supply of hot water in a storage tank. Repairs typically involve leaks, sediment buildup, thermostats or heating elements. They are generally straightforward and less expensive to fix, averaging from $150 to $700 to repair.

Tankless water heaters, by contrast, heat water only when needed. While they are more energy-efficient, repairs can be more costly due to issues with heat exchangers, scale buildup and electronic controls.

Tankless units often require professional servicing to maintain warranties. The cost to repair a tankless unit ranges from $300 to $1,300 on average.

Gas water heaters

Gas water heaters, whether tank or tankless, typically need more frequent attention than electric models. They are cheaper to run but can cost more in repairs for certain components.

Here are the average costs of repairs for gas water heaters:

Electric water heaters

Electric units, whether tank or tankless, require some unique repairs:

• Tripped breakers: Usually fixed by resetting the system
• Bad thermostats: $20 to $200
• Faulty heating elements: $200 to $300

Tankless electric water heaters may have additional costs for control board replacement or descaling due to mineral buildup.

Hybrid (heat pump) water heaters

Hybrid water heaters combine tank storage with heat pump technology, using electricity more efficiently than standard tank units. Repairs may involve both the tank components and the heat pump system, making costs higher than standard tank water heaters.

Typical repair costs range from $150 to $900, depending on the issue. Common repairs include thermostat replacement, leak repair and pump servicing.

Less common water heater types

Other types, including sump pumps and waterless units, also have specialized repair needs. Costs vary depending on unit complexity, installation and replacement parts. Professional service is often required to maintain efficiency and warranty coverage.

Additional water heater repair costs

During water heater repairs, you may encounter a few extra fees. Some units might need a new gas line, which costs anywhere from $260 to $820, a water line, which costs $400 to $2,000 or additional wiring, which costs $500 to $1,000.

Additionally, water heaters need regular preventive maintenance and tuneups yearly to extend their life span. A plumber typically costs between $100 and $500 to tune up, flush, inspect and test different components in your unit.

However, if you want to save some money, you can do the maintenance and tuneups yourself. Tuneup kits usually cost around $30 and are pretty simple to use.

» COMPARE: Best water heater brands

What else affects the cost to repair a water heater?

Several other factors beyond unit type and part replacement can affect the total cost of water heater repairs. Diagnostic fees, permits and where you live can all impact how much you’ll pay for labor, materials and local compliance requirements.

Service call and diagnostic fees

Most plumbers or HVAC technicians charge a service call fee to inspect your water heater and identify the issue. This typically ranges from $50 to $150, depending on the company and your location.

Some contractors apply this fee toward the total repair cost if you choose to hire them, while others charge it separately. Always confirm whether the service call fee is refundable or credited toward your repair before booking a service appointment.

Regional and variation

Regardless of what home maintenance or improvement project you do, your location will affect how much it costs.

For example, if you live in the Pacific North (Northern California, Northern Nevada and Utah), installation costs 35% to 45% above the national average for a tank water heater and 15% to 25% above the national average for a tankless water heater.

By contrast, in the South Atlantic region (North Carolina, South Carolina, West Virginia, Kentucky and Tennessee), tank and tankless water heater installation costs are 10% to 20% below the national average.

This variation often comes down to differences in labor rates, local building codes, climate-related demand and material availability — all of which can raise or lower repair and installation costs depending on where you live.

Permits

Some areas require a permit for water heater repairs or replacements, especially when updating plumbing lines or electrical connections. Permit fees typically range from $50 to $250, depending on the municipality.

Failing to get proper permits can lead to fines or inspection issues later, so it’s best to ask your contractor or local building department about specific requirements before starting work.

Can you DIY a water heater repair or replacement?

If you're looking for a cheaper option, you could potentially repair your water heater yourself. Many repairs only take an hour or two and are relatively simple. Typically, repairs cost under $100, and you'll only need a few tools.

However, if you are replacing your water heater, calling a professional might be worth it. Replacing a water heater is an advanced job that requires experience. Simple mistakes can lead to gas leaks, carbon monoxide poisoning and fires, so it's best to call a trained plumber.

Here are some do-it-yourself replacement costs for common repairs:

When should a water heater be replaced vs. repaired?

Most units last for around 12 years, but some high-efficiency models can last up to 20 years. If your water heater is reaching the end of its lifespan, it might be time for a new one.

Before your water heater breaks down completely, there will be some signs that it needs replacement. In addition to needing excessive repairs, replace your unit if it’s doing any of the following:

• Making your energy bill higher than normal
• Leaking
• Making strange noises
• Running out of hot water
• Producing metallic-tasting or discolored water

New water heater costs

If you have to replace your water heater, here’s a breakdown of how much a new one will cost to install, according to The Home Depot:

Does your home warranty cover water heaters?

Many home warranties cover various systems and appliances for normal wear and tear, including water heaters. This coverage is usually provided in the company’s system plan but is sometimes only offered in the highest-tier plan. You can sometimes add water heaters to your home warranty plan as an add-on.

Here are some water heater repairs covered by a home warranty:

• Gas valves
• Main burners
• Electrical heating elements
• Vent dampers
• Manifolds
• Relief valves
• Limit controls
• Pilot burners
• Flame spreaders
• Thermocouples
• Regulators
• Thermostats
• Anode rods
• Thermal expansion tanks
• Fuel storage tanks
• Flues
• Piping insulation
• Heat recovery units

» LEARN: What does a home warranty cover?

How to save on water heater repairs

There are several easy ways to keep repair costs down:

• Schedule regular maintenance to prevent sediment buildup and extend your heater’s lifespan.
• Flush the tank annually to improve efficiency and catch small issues early.
• Compare quotes from at least three licensed contractors to find a fair price.
• Ask about service call credits — some pros apply inspection fees toward the total repair.
• Replace parts proactively (like anode rods or thermostats) before major failure.
• Consider a home warranty if your water heater is older and out of manufacturer coverage.

Bottom line

Repairing your water heater yourself can be a relatively simple job and save you hundreds of dollars in labor fees. However, if you are completely replacing your unit or you decide to call a plumber, you can expect to pay $45 to $150 per hour for labor. If you want to save some extra time and money, double-check to see if your home warranty plan covers repairs and replacements on water heaters.