How Long Does a Dishwasher Last?

A dishwasher lasts 7 to 12 years, averaging about 9 — the shortest service life of any major kitchen appliance (InterNACHI). Other sources put the average a bit higher: Consumer Reports cites ENERGY STAR's figure of 10 years, and Bob Vila puts the range at 9 to 16, averaging about 12. Treat 9 as the realistic planning number and anything past that as bonus life, not a guarantee.

The reason a dishwasher wears out faster than a fridge or a washer is duty cycle. The pump and heating element work continuously in hot, mineral-heavy water every single cycle — harder, more corrosive conditions than almost any other appliance in the house faces.

How long does a dishwasher last?

7 to 12 years, averaging about 9:

The spread between sources is real — it mostly comes down to usage intensity, water hardness, and whether anyone ever cleans the filter.

What shortens a dishwasher's life?

What happens to a dishwasher as it ages?

• Years 1–3: spray-arm blockages and detergent-dispenser latch issues. Usually a cleaning fix, not a repair.
• Years 4–7: drain pumps, door-latch switches, and worn door seals that let water weep onto the floor. Still cheap relative to replacement.
• Years 8–10 (the average lifespan falls here): circulation pump, heating element, and control board failures — the expensive tier. This is where the repair-or-replace math gets close.
• Years 11+: past typical service life. Rack tines corrode, and older machines use substantially more water per cycle than a current ENERGY STAR model.

How long do Bosch dishwashers last?

Bosch doesn't publish its own expected-lifespan number, but its warranty structure is a useful proxy: full parts and labor for year 1, electronics and racks covered (parts only) through year 5, and rust-through on the inner tub liner covered for the appliance's lifetime. That lifetime rust coverage is notable because visible tub-floor rust is one of the two failures that mean any dishwasher is done, at any age — Bosch is explicitly standing behind the one failure mode that ends a machine outright.

If you're not sure how old your Bosch is, remember it's the one brand on this site's decoder that doesn't date its serial number — look for the FD number instead, where the year is the first two digits plus 1920 (FD 0301 is January 2023).

When should you replace instead of repair?

Any one of these points to replacement:

• A circulation pump, heating element, or control board fails and the unit is past 8 years old — replacing the whole machine runs $540 to $2,175 installed, and a major-component repair often approaches half of that on a unit already past the 9-year average lifespan.
• Visible rust on the tub floor or rack tines, at any age — not economically repairable.
• The door still leaks after a new gasket, at any age — the enclosure itself has failed.
• Dishes come out gritty or still wet on a normal cycle, even after cleaning the filter and spray arms.

How to make a dishwasher last longer

• Clean the filter every few weeks. A clogged filter is behind a large share of "my dishwasher stopped cleaning properly" complaints on machines built in the last decade.
• Scrape, don't pre-rinse. Modern detergent needs some food residue to work against; heavy pre-rinsing can actually leave dishes duller over time.
• Run it regularly, reasonably full. Long idle stretches and constant half-empty loads both add wear without much benefit.
• Address hard water. A whole-house softener or a rinse-aid formulated for hard water cuts the mineral scale that ages the heating element early.
• Use the machine's hottest cycle occasionally if yours has a sanitize setting — it helps clear residue buildup that a normal cycle leaves behind.

If you're not sure where yours sits on this timeline, decode the serial number with our dishwasher age tool — it reads GE, Whirlpool, KitchenAid, Maytag, and Bosch's FD number.