Most water heaters don't fail without warning — they give you a few signs first. Catching them early means you get to choose the timing and the replacement, instead of dealing with a flooded closet on a Sunday morning.
How long should a water heater actually last?
Most tank water heaters last 8 to 12 years, depending on water quality, usage, and how well it's been maintained. If yours is approaching or past that range, it's worth paying closer attention to how it's performing — even if nothing seems obviously wrong yet.
Do
- Check the manufacture date on the unit's label so you know roughly where it stands
- Listen for popping or rumbling sounds, which often mean sediment buildup
- Look at the area around the base of the tank for any dampness
- Pay attention if hot water runs out noticeably faster than it used to
- Schedule a flush if it's been more than a year or two since the last one
Don't
- Don't wait for a total failure before considering replacement, especially on an aging unit
- Don't ignore rusty or discolored hot water — it can signal internal tank corrosion
- Don't assume a pilot light that won't stay lit is a simple fix without having it checked
- Don't keep resetting a tripped breaker repeatedly without finding out why
Quick tip: If your water heater is over 10 years old and starting to show any of these signs, it's usually smarter to plan a replacement on your schedule rather than wait for it to fail on its own.