How Long Does a Dishwasher Last?
Most dishwashers last 7–12 years, about 9 years on average — what affects that range and when repair stops making sense.
7–12 years
Typical range
~9 years
Planning average
Don’t know how old your dishwasher is?
Use the serial number to estimate its manufacture date and age.
Check dishwasher age →Around 9 years is a useful planning point, not an expiration date. Many dishwashers run longer, but age starts to matter more once an expensive repair shows up.
Dishwashers operate in a demanding environment: repeated heat, water, detergent and mineral exposure put pumps, seals, heating components and racks through thousands of wet/dry cycles over their life.
Why dishwasher lifespan estimates vary
InterNACHI
9 years
ENERGY STAR / Consumer Reports
~10 years
Bob Vila
9–16 years
Different sources use different assumptions, so ~9–10 years is best treated as a planning range rather than an expiration date.
The spread reflects different data sources and assumptions about usage, maintenance and operating conditions — the same factors that affect how long an individual machine actually lasts.
What shortens a dishwasher's life?
Hard water
Mineral scale builds up on the heating element and spray arms — Bob Vila names hot, mineral-heavy water as the core reason dishwashers corrode faster than other appliances.
Dirty filter
A neglected filter can restrict water flow and allow debris to recirculate, contributing to poor performance and additional strain on the wash system.
Heavy usage
More cycles mean more operating hours on pumps, seals, racks and heating components.
Drainage / install issues
A poor drain connection or installation issue can add strain that shows up as pump or leak problems earlier than expected.
What happens to a dishwasher as it ages?
Early life
0–3 years
Isolated faults can happen, but they’re rarely the economic conversation unless there’s unusual structural damage.
Repair usually makes more economic sense here, assuming there isn’t unusual structural damage or an exceptionally costly failure.
Mid-life
~4–8 years
Wear-related repairs (e.g. drain pumps, door seals) become more relevant, and repair history starts to matter.
Many repairs are still relatively easy to justify against replacement cost.
Planning window
~9–12 years
Expensive repairs (e.g. circulation pump, control board) deserve more scrutiny as the machine approaches or sits within its typical lifespan range.
This is where the repair-vs-replace math gets close.
Beyond typical range
12+ years
A working machine can keep running, but a major repair is harder to justify against replacement.
Worth pricing a replacement before something forces the decision.
As repair risk rises with age, a home warranty arranged before a problem appears is one option for making eligible future breakdown costs more predictable.
Planning ahead
$50 off + your first month freePlan ahead for unexpected home repair bills
As appliances age, repair costs become harder to predict. A home warranty may help cover eligible future breakdowns across multiple appliances and home systems.
Choice covers kitchen and laundry appliances, as well as heating, cooling, plumbing and electrical systems.
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Coverage generally applies to eligible systems and appliances that are working when the plan begins. Existing or known problems may not qualify.
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Where yours actually sits day to day matters more than the calendar, though:
What brought you here?
One brand raises its own question, separate from all of the above.
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). If a repair quote has you deciding between fixing and replacing, use our repair-or-replace guide.
How to make a dishwasher last longer
- Clean the filter every few weeks, consistent with your manufacturer's recommendations — the actual interval varies by use and model.
- Scrape off large food scraps rather than fully pre-rinsing. Modern dishwashers are designed to clean normal food soil, and unnecessary pre-rinsing wastes water.
- Run reasonably full loads when practical. More cycles mean more operating hours, so avoiding unnecessary half-empty runs reduces needless use.
- 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.
Recommended products
Help your dishwasher last longer
Affresh Dishwasher Cleaner
Helps remove detergent and mineral buildup inside the machine.
Check price on Amazon →
Lemi Shine Hard Water Stain & Film Remover
Useful in hard-water homes to help reduce mineral film and scale buildup.
Check price on Amazon →As an Amazon Associate we earn from qualifying purchases. How this works
In TidyBoss's own appliance-age lookup data, 64% of confirmed dishwasher lookups involved units already 10+ years old — see our research on when people check appliance age.
Frequently Asked Questions
How long does a dishwasher last?
A typical dishwasher lasts 7 to 12 years, averaging about 9 (InterNACHI). Other sources put the average higher — Consumer Reports cites ENERGY STAR's 10-year figure, and Bob Vila puts the range at 9 to 16 years, averaging about 12 — so treat 9 as a realistic planning number rather than a hard ceiling.
Do Bosch dishwashers last longer?
Bosch doesn't publish an expected-lifespan figure, so there isn't a basis for claiming a different number than the 7–12 year range above. Its warranty does cover more than many budget brands — full parts and labor for year 1, electronics and racks (parts only) through year 5, and rust-through on the inner tub liner for the life of the appliance — but warranty length and expected service life aren't the same thing.
What shortens a dishwasher's lifespan?
Constant exposure to hot water and acidic food residue corrodes the tub and components over time. Skipping the filter cleaning, running it with a nearly empty load regularly, and hard water scale all add up faster than heavy, well-maintained daily use does.
Is a dishwasher worth repairing at 9 years old?
Depends what failed. A spray arm, latch, or door seal is worth fixing at any age. A circulation pump, heating element, or control board failure at 9 years — right at the average lifespan — is a closer call: if the repair quote tops half the price of a new unit, replace instead.
How do I find out how old my dishwasher is?
Open the door and check the inner edge of the door panel, or the tub rim along the top of the opening. [Decode the serial with our dishwasher age tool](/tools/appliance-age-calculator/dishwasher/) — Bosch is the exception and uses its FD number instead of a dated serial.
Sources
- InterNACHI — Standard Estimated Life Expectancy Chart for Homes — dishwasher life expectancy of 9 years; garbage disposal 12, gas range 15-17, for context
- Bob Vila — How Long Do Dishwashers Last? — 9-16 year range, average about 12; corrosion from constant water exposure and acidic food scraps; a pump failure near 15 years is a signal to replace rather than repair
- Consumer Reports — 5 Things to Know When Replacing a Dishwasher — cites ENERGY STAR's figure of 10 years average dishwasher lifetime; hand-washing dishes costs $431 more in water and energy over that lifetime than an ENERGY STAR dishwasher
- Bosch — Warranty Information — Bosch's own published dishwasher warranty terms: full parts+labor year 1, electronics and racks parts-only years 2-5, rust-through on the inner tub liner and stainless door covered for the appliance's lifetime
The Dishwasher Series
- 1How Old Is My Dishwasher? Bosch, Whirlpool and Other BrandsDecode the serial number and see where it sits against a typical lifespan.
- 2How Long Does a Dishwasher Last?You’re here — this article.
- 3Should You Repair or Replace a Dishwasher?The decision, in one place — with the age line and the cost line that settle it.
- 4How Much Does It Cost to Replace a Dishwasher?Unit price by tier, installation cost, and what pushes the price up.