How Long Does a Dishwasher Last? (Repair vs. Replace Guide)

Entry-level dishwashers (under $500 new): 7–9 years. These use thinner steel, plastic wash arms, and the cheapest motors. They fail at predictable points and parts often cost more than the unit is worth.

Mid-range dishwashers ($500–$900 new): 9–12 years. The sweet spot for most households. Whirlpool, KitchenAid, GE, and Maytag all build solid machines in this tier.

Premium dishwashers ($900–$1,800 new): 12–15 years. Bosch, Miele, and Thermador. Stainless tubs, quieter operation, better water use, and parts that stay available longer. Worth repairing deeper into their life.

Our rule of thumb: if the repair cost is over 50% of a comparable replacement, replace. Under 50%, repair almost always wins.

Example: a 6-year-old Bosch 500 series with a failed circulation pump quoted at $380. Replacement cost for a comparable new unit is $900–$1,100. Repair is 35–42% of replacement — repair every time.

Same failure on a 10-year-old Frigidaire quoted at $420. Replacement of a comparable unit is $550. Repair is 76% — replace.

Some failures are economic death sentences regardless of age:

• Cracked or rusted tub — parts can be replaced but the structure is compromised
• Motor and pump failure together on a unit over 8 years old
• Control board failure on a unit over 10 years old (boards are $300–$500)
• Repeated leaks from multiple points (door, tub, pump) — too many failure points
• Rack corrosion that makes loading impractical, when rack replacement is discontinued
• Energy efficiency two generations behind current — the electric and water savings pay for a new unit over 5–7 years

Most common repairs we see are worth doing on any dishwasher under 10 years old:

• Drain pump failure — $180–$280 repair, takes under an hour
• Door latch or hinge — $120–$200 repair
• Heating element — $200–$300 repair, extends life by 3–5 years
• Spray arm or water inlet valve — $150–$280 repair
• Rack adjuster or tines — $80–$150 parts-only if done DIY

Five habits add 3–5 years to any dishwasher. None of them are hard.

Scrape, don't rinse. Pre-rinsing wastes water and starves the food sensor on modern units, which then uses less water than it should and leaves residue. Scrape large debris into the trash; let the dishwasher handle the rest.

Clean the filter monthly. Every modern dishwasher has a removable cylindrical filter at the base. Twist it out, rinse under hot water, scrub with an old toothbrush. Food debris here is the #1 cause of poor cleaning and eventual pump damage.

Run a monthly tub cleaner. Pour a cup of white vinegar in a measuring cup on the top rack and run a hot cycle. Removes hard-water deposits, detergent buildup, and odor.

Check the spray arms. Unscrew them every few months and clear any mineral clogs in the jets. A clogged jet means that corner of the top rack never gets clean.

Inspect the door gasket. Wipe it weekly; replace it when it cracks. Gasket failures cause door leaks, which rot the floor and short out door latch electronics.

If your dishwasher is 8 years old or less, always get a diagnosis before buying a new one. We've replaced $60 float switches on 7-year-old units that customers were about to replace for $900. A flat-rate diagnostic fee applied to repair costs is a small hedge against an expensive mistake.

If the dishwasher is 12+ years old and the quoted repair is over $250, replacement usually wins — but get the quote in writing with a clear parts/labor breakdown so you're comparing real numbers.