How Long Does a Water Heater Last?

If you’ve ever stepped into the shower expecting warm water and got a blast of ice instead, you’ve probably wondered: how long does a water heater last? The short answer, most water heaters last 8–12 years. But the exact lifespan depends on the type of water heater you own, how well it’s maintained, and the quality of your water.

Average Lifespan by Type of Water Heater

Traditional Tank Water Heater

• Lifespan: 8–12 years

• These are the most common and store hot water in a tank. Over time, sediment buildup and corrosion can shorten their life.

Tankless (On-Demand) Water Heater

• Lifespan: 15–20 years

• Heats water only when you need it, reducing wear and tear. With proper care, these can last much longer than traditional tanks.

Hybrid Water Heater

• Lifespan: 10–15 years

• Combines features of tank and tankless units. Lifespan varies based on usage and maintenance.

Signs Your Water Heater May Be Near the End

• Rusty or discolored water

• Strange noises like popping or rumbling

• Leaking around the tank

• Water isn’t heating like it used to

• Frequent repairs

If you notice these signs and your unit is already past 8 years old, it might be time to start planning for a replacement.

How to Extend the Life of Your Water Heater

• Flush the tank yearly to remove sediment buildup

• Check the anode rod every 2–3 years and replace if needed

• Maintain consistent water pressure

• Schedule regular professional inspections

Your water heater is one of the most important appliances in your home. Knowing its average lifespan and how to take care of it can save you from cold showers and unexpected repair bills. If your water heater is nearing the end of its life, replacing it before it fails completely can prevent water damage and higher costs.

Need a water heater inspection or replacement in Phoenix?

Call Vertical Plumbing at (480) 577-8720