How Long Do Dishwashers Last?
\n\n\n\nQuick Answer: How Long Do Dishwashers Last?
\nA dishwasher lasts about 9 years. That is the figure InterNACHI publishes in its standard life expectancy chart for homes, and it is the shortest life of any major kitchen appliance except the microwave.
\n- \n
- 9 years is a median, not a deadline: well-kept machines on soft water pass 12, neglected ones on hard water fail at 6 \n
- Hard water is the single biggest killer, and it does its damage through the heater and the seals \n
- Median repair in our own book: $308 across 64 completed dishwasher repairs, middle half $254 to $375 \n
- The rule of thumb: past 8 years, a quote above roughly half the price of a new machine is not worth paying \n
Two things decide whether your dishwasher sees its tenth birthday, and neither is the badge on the door: the hardness of your water and whether anyone has ever cleaned the filter. This page gives the published life expectancy, what our own service book says actually fails, and the arithmetic for deciding at each age.
\n\nDishwasher acting up?
\nSame-day and next-day appointments. The $99 diagnostic is applied to the repair the moment you approve it, and you see the total before any part is ordered.
\n\nWhere the Nine-Year Figure Comes From
\nThe number is not a marketing estimate. InterNACHI, the international association of home inspectors, publishes a life expectancy chart used across the American home-inspection trade, and its appliances section lists a dishwasher at 9 years. Inspectors use it to tell a buyer whether the machine in a house they are about to purchase is near the end of its service life.
\nRead next to the rest of the kitchen, nine years is a short life, and the reason is mechanical rather than commercial: a dishwasher is the only appliance in the house that combines heat, water, detergent chemistry and a pump in one sealed box, and runs that combination for two hours at a time several times a week.
\n\n| Appliance | Years | What usually ends it |
|---|---|---|
| Dishwasher | 9 | Heater, pump or a seal that has been leaking quietly |
| Microwave oven | 9 | Magnetron, and the part costs more than the machine |
| Refrigerator | 9 to 13 | Sealed system: compressor, leak or blocked capillary |
| Garbage disposal | 12 | Corroded grinding chamber or a seized motor |
| Dryer | 13 | Drum bearings, or a vent that cooked the heat path |
| Electric range | 13 to 15 | Control board, or a cracked glass top |
| Gas range | 15 to 17 | Valves and igniters, both replaceable for years |
| Washing machine | 5 to 15 | The widest spread of any appliance: bearings decide it |
The washing machine range, 5 to 15 years, is not sloppiness in the data. It is the honest description of an appliance whose life is decided by one expensive part, and our page on the drum and the bearings inside it explains why.
\n\nWhat Our Own Service Book Says
\nPublished averages tell you when to expect trouble. Our invoices tell you what the trouble costs. Across every completed job we have on record, dishwashers account for 102 calls, 11.2 percent of everything we are called to.
\n\n| Measure | Figure | Base |
|---|---|---|
| Median finished repair | $308 | 64 completed repairs |
| Middle half of repairs | $254 to $375 | the 25th to 75th percentile |
| Cheapest and dearest | $195 and $653 | the full range we have seen |
| Share of repairs under $400 | 86 percent | 55 of 64 repairs |
| Diagnostic visit | $99 | flat, applied to the repair on approval |
That distribution is the important part of the answer to how long a dishwasher lasts. Nearly nine in ten dishwasher repairs finish under $400, which means that for most of the machine’s life a fault is comfortably worth fixing. The decision only gets difficult in the last band, and the last band is small.
\n\n| Price band | Share | Typical work |
|---|---|---|
| Under $200 | 19 percent | A filter, a spray arm, a door catch |
| $200 to $299 | 32 percent | Drain pump, inlet valve, thermistor, hose work |
| $300 to $399 | 36 percent | Circulation pump, heater, door seal |
| $400 to $499 | 7 percent | Control board, or two faults in one visit |
| $500 and above | 6 percent | Board plus pump, or premium built-in equipment |
What Actually Shortens the Nine Years
\nFour things, in order of how much damage they do.
\n\nHard water
\nThis is the big one, and it is why identical machines in two houses ten miles apart have different lifespans. Dissolved minerals plate out on the hottest surface in the machine, which is the heating element, and a scaled element runs hotter to do the same work until it fails. The same scale stiffens the door seal and roughens the pump impeller. Nothing about it is dramatic; it just quietly removes years. Our guide to what hard water does to a dishwasher covers the countermeasures, and the short version is that rinse aid and the salt reservoir are not optional extras in a hard-water house.
\n\nA filter nobody has ever taken out
\nModern dishwashers dropped the food grinder and use a filter instead, and most owners have never removed theirs. A blocked filter starves the circulation pump, which then runs against restriction for years. It also explains most complaints of gritty dishes, which is a separate page: why a dishwasher stops cleaning properly. Pulling the filter, rinsing it under a tap and refitting it takes two minutes and should happen monthly.
\n\nA drain hose without a high loop
\nThe drain hose must rise above the level of the sump before it reaches the trap, either looped up under the worktop or through an air gap. Fitted flat, waste water siphons back into the machine and sits there between cycles. Every seal and every metal surface then spends its life wet, and this is the installation fault we correct most often in kitchens where a dishwasher was retrofitted.
\n\nDetergent and the half-empty habit
\nTwo smaller effects that add up. Too little detergent for the water hardness leaves minerals to plate out rather than be carried away, and running mostly half loads on an eco programme means long cycles at low temperature, which is exactly the condition biofilm likes. Neither will kill a machine on its own, but both take months off it.
\n\nSigns Your Dishwasher Is Near the End
\nOne of these is a repair. Three at once, on a machine past eight years, is a replacement conversation.
\n- \n
- Water in the sump every morning after a cycle has finished, which points at drain geometry or a tired non-return valve \n
- Dishes coming out barely warm, the classic sign of a heater losing the fight against scale \n
- Rust at the base of the tub or around the door frame, which means the coating has gone and water is reaching steel \n
- A cycle that has quietly grown by half an hour, because the machine is extending its heating phases to reach the same temperature \n
- Cracked plastic on the racks and the door hinges, cheap on their own but a good clock for the rest of the machine \n
- A smell that returns days after a proper clean, which usually means biofilm somewhere the water no longer reaches \n
- Repeated error codes for drainage or heating after those parts have already been replaced once \n
Repair or Replace, by Age
\nThe arithmetic is the same one we use out loud on the phone.
\n\n| Age of machine | Repair if the quote is | Reasoning |
|---|---|---|
| Under 4 years | Almost any figure | The machine has most of its life left, and a warranty claim may still apply |
| 4 to 7 years | Up to about half of replacement | Squarely inside normal service life; our median repair of $308 is comfortably worth paying here |
| 8 to 10 years | Up to about a third | At the published life expectancy, so a second fault is likely within a year or two |
| Over 10 years | Only cheap, single-part work | Worth keeping alive for a $200 pump, not worth a $450 board |
| Any age, built-in premium | More than the table suggests | Replacement means cabinetry and a fitted panel, so the comparison is not appliance against appliance |
Our repair or replace calculator runs this with your own figures, and the full price picture for the appliance is in the dishwasher repair cost database.
\n\nHow to Get Past Nine Years
\nEverything on this list is free or nearly free, and together they are worth more than the brand you buy.
\n- \n
- Rinse the filter monthly. Two minutes, and it protects the most expensive moving part in the machine \n
- Keep rinse aid topped up, and in a hard-water house keep the salt reservoir filled if the machine has one \n
- Run a hot cycle empty once a month, with a dishwasher cleaner or citric acid, to strip scale before it bonds \n
- Check the drain hose has a high loop. If it runs flat from the machine to the trap, that is a ten-minute correction with years of payback \n
- Do not pre-rinse dishes to a shine. Modern detergents need something to work on, and a soil sensor reading clean water shortens the wash \n
- Wipe the door seal every few weeks; a seal kept clean stays flexible and a flexible seal keeps water off the frame \n
- Use the full-length programme sometimes. A hot cycle now and then clears what eco cycles leave behind \n
Does the Brand Change the Answer?
\nLess than the marketing suggests and less than the water does. Our own failure data across brands is published in appliance failure rates by brand and the ranking in most reliable appliance brands. What we can say from the repair book without any hedging is this: the price of a dishwasher repair tracks the design far more than the badge. A machine with the heater built into the circulation pump as one assembly is a dearer repair than one with a separate element, whoever made it, and integrated panel-ready units cost more in labour than freestanding ones in every brand we service.
\n\nAge has little to do with the commonest dishwasher fault: a machine of any age will stop draining if its filter is blocked. See dishwasher not draining.
Whether a pump is worth fitting depends on part availability as much as on age: the dishwasher drain pump.
Parts availability decides more than age does, and on Whirlpool-group platforms it is good: KitchenAid appliance repair.
Frequently Asked Questions
\nHow long do dishwashers last?
\nHow long should a dishwasher last before it needs replacing?
\nWhat makes a dishwasher fail early?
\nIs it worth repairing a 10-year-old dishwasher?
\nHow much does a dishwasher repair cost?
\nWhat are the signs a dishwasher is dying?
\nDo expensive dishwashers last longer?
\nCan a dishwasher last 20 years?
\nSources: life expectancy figures from InterNACHI’s Standard Estimated Life Expectancy Chart for Homes, appliances section, at nachi.org. Repair figures are Neighborville’s own completed jobs, 2024 to 2026: 64 priced dishwasher repairs, against a company-wide book of 668 priced repairs.
\nLast updated: September 2026. Where a sample is too small to carry a median, we print the individual jobs instead.
\nNot sure whether yours is worth fixing?
\nWe name the fault and the part, quote the total before anything is ordered, and say plainly when a machine is not worth the repair. The $99 diagnostic is applied to the work when you approve it.
\n\nMore on this appliance
- Dishwasher Drain Hose: Routing, Faults and the High Loop
- Dishwasher Drain Pump: Jam, Failure and What It Costs
- Dishwasher Leaking: Where From, Why, and What It Costs
- Dishwasher Not Cleaning Dishes — Causes, Parts, and Costs
- Dishwasher Not Draining: the Drain Path, Step by Step
- Dishwasher Repair Cost Database
- Front-Load vs Top-Load Washer: Which Is Better?
- GE Washer Not Spinning: Drive Type Decides the Fault
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