A standard water heater lasts about 10 to 15 years, depending on factors like usage, maintenance, and water quality. Tankless water heaters often last longer, around 20 years or more.
Common signs include:
- No hot water or inconsistent water temperature
- Strange noises like rumbling or popping
- Water discoloration (rusty or brown water)
- Leaks around the base of the unit
- Age—if your water heater is over 10 years old, it may be time to replace it.
Regular maintenance can help extend the life of your water heater. This includes:
- Flushing the tank once a year to remove sediment buildup
- Checking the anode rod every 1–2 years and replacing it if necessary
- Ensuring the thermostat is set correctly (usually around 120°F)
- Insulating the tank and pipes for better energy efficiency
If your water heater is less than 10 years old and the repair is minor (like a thermostat issue), repairing may be the best option. However, if the unit is older, inefficient, or the repairs are costly, replacement might be the more economical choice in the long run.
The cost of replacing a water heater varies depending on the type (tank vs. tankless), size, and installation requirements. On average, a traditional tank water heater replacement can cost anywhere from $800 to $1,500, while tankless models may range from $1,500 to $3,000 or more, including installation.
- Tank water heaters store hot water in a large tank and keep it heated at all times. They’re generally less expensive upfront but less energy-efficient.
- Tankless water heaters heat water on demand, meaning they don’t store water. They tend to be more energy-efficient and last longer, but the upfront cost is higher.
- Set the thermostat to 120°F or lower
- Insulate your tank and pipes
- Consider upgrading to a more energy-efficient model, like a tankless or Energy Star-rated water heater
- Perform regular maintenance to ensure optimal performance
Noises like popping or rumbling are often caused by sediment buildup in the tank. As the water heats, the sediment can trap steam bubbles, leading to noise. Flushing the tank can usually resolve this issue.
While it may be tempting to install a water heater yourself to save money, it’s important to hire a licensed professional. Improper installation can lead to safety risks, inefficiency, and voided warranties.
Check around the base of your water heater for pooling water or wet spots. If you notice leaks, it’s best to call a professional immediately to prevent further damage.
The right size depends on factors like the number of people in your household, your water usage, and the type of system you choose. A typical family of four may need a 50–60 gallon tank, but larger households or those with higher water demands may need a larger unit or a tankless system.
The anode rod is a metal rod inside the water heater that helps prevent corrosion by attracting corrosive elements in the water. It’s important to inspect and replace it every 1–2 years to extend the life of your water heater.
Regular maintenance includes:
- Flushing the tank annually
- Checking the anode rod and replacing it as needed
- Insulating the tank and pipes
- Setting the thermostat to 120°F to avoid overheating and save energy
- Inspecting for leaks and rust periodically
Hard water can cause mineral buildup inside your water heater, leading to reduced efficiency and potential damage. Using a water softener or regularly flushing the tank can help manage this issue.