How Long Do Water Heaters Last? Signs It's Time to Replace

Your water heater works quietly in the background until the day it doesn't. Knowing how long these units typically last and recognizing the early warning signs can save you from a cold-shower surprise and potential water damage.

Average water heater lifespan

A conventional tank water heater lasts roughly 8 to 12 years. Tankless units often run 15 to 20 years with proper maintenance. New Jersey's hard water can shorten these ranges if the unit isn't flushed periodically.

Warning signs to watch for

• Rusty or discolored hot water
• Water that never gets hot enough or runs out fast
• Rumbling or popping sounds from the tank
• Moisture or pooling water around the base
• Frequent repairs in a short span
• The unit is more than 10 years old

Repair or replace?

As a rule of thumb, if your heater is past 10 years old and the repair would cost more than half the price of a new unit, replacement is usually the smarter long-term choice. A new efficient model also lowers your energy bills.