The short version
Under about 8 years, repair almost anything. Between 8 and 12, repair the cheap failures (drain pump, inlet valve, door latch, float switch, filter) and think hard about the expensive ones (control board, circulation pump, tub leak). Past 12 years on a builder-grade unit, put the money toward a new machine. The exceptions are Bosch and Miele, which earn a longer repair window, and the cases where nothing is actually broken and the filter just needs cleaning.
How long a dishwasher lasts, and why yours may not
Most dishwashers run 9 to 12 years. Builder-grade units, the ones that come with a new house or a rental, sit at the low end. Bosch and Miele routinely reach 12 to 15. What moves any brand toward the short end is water: a dishwasher is a pump, a heater and a set of spray arms living in hot, mineral-heavy water twice a day, and every one of those parts scales up over time.
That matters in Tampa Bay. Municipal water here runs on the hard side, and well water in Pasco and eastern Hillsborough is harder still. Scale narrows spray-arm holes, coats the heating element, stiffens the inlet valve and grinds at pump seals. A dishwasher that would reach 12 years elsewhere can start having pump trouble at 8 here, unless rinse aid and an occasional citric-acid cleaning cycle keep the deposits down. None of that is a reason to replace early; it's a reason to know what's actually failing before you decide.
Before any math: it might just be the filter
I'll say this plainly because it's the most useful sentence on the page: a lot of "my dishwasher is dying" calls are a clogged filter. Nearly every dishwasher built in the last 15 years has a cylindrical filter that twists out of the tub floor by hand. When it packs with food film and grease, the pump starves, dishes come out gritty, water stands in the bottom and the tub starts to smell. All three symptoms look like a machine at the end of its life. None of them is.
Pull the bottom rack, twist the filter out, rinse it under hot water with a brush, and clear the spray-arm holes with a toothpick while you're there. If the machine cleans well afterward, you have a working dishwasher and an unexpectedly good afternoon. If it still won't drain, the next stop is dishwasher not draining, which walks through the drain pump, check valve and the air gap many sinks here have.
The cheap fixes: repair these at almost any age
These are the failures I see most, and every one of them is a modest part with quick access, usually without pulling the machine out from under the counter:
- Drain pump. A small motor and impeller at the bottom of the sump. It fails outright, or a shard of glass jams the impeller. Standing water after the cycle is the symptom. Modest part, easy swap on most brands.
- Water inlet valve. The solenoid valve that lets water in. When it scales up or the coil fails, the dishwasher hums and stays dry, or fills so slowly it errors out. Sits behind the kick plate on most units.
- Door latch and door switch. Worn latch, or the microswitch inside it: the door closes but the machine thinks it's open and won't start. Cheap, and the door comes apart from the inside.
- Float switch. The little dome in the tub floor that tells the control the tub is full. When it sticks or its switch fails, you get no fill or an overfill. Inexpensive.
- Heating element on older units. The exposed loop in the tub floor on traditional designs. It burns open, dishes come out wet and the sanitize light never comes on. A straightforward part on those designs; the newer flow-through heaters are a different story (below).
- Spray arm and filter cleaning. Not a repair, a cleaning, but it fixes more dishwashers than any part I carry.
On a 10-year-old dishwasher that has never been opened, any of these is worth doing. The machine isn't wearing out; a single part reached the end of its life. This is the everyday end of dishwasher repair.
The expensive fixes: where age decides
- Main control board. The board runs everything, and on touch-panel models the user interface board can fail separately. Lightning and surges do a lot of this work in Tampa Bay. On a 5-year-old machine, replace the board. On a 12-year-old builder-grade unit, the board can approach half the price of a comparable new machine, and that's the line.
- Circulation pump and motor. The big pump that drives the spray arms. When it seizes, hums or leaks from the shaft seal, the whole sump comes apart and the machine usually comes out from under the counter. Significant part, significant labor. On newer Bosch and some Whirlpool-family designs the heater is built into this pump, so a heater failure means the whole assembly.
- Tub leak. A cracked plastic tub, or a stainless tub rusting through at a seam, is not repairable in any honest way. Replace.
- Door seal, on some designs. The main gasket is cheap and clips in. The lower door seal on some models means partial door disassembly, and if the leak has already warped the cabinet floor the seal is the least of it.
The pattern: cheap failures are single parts. Expensive failures are either the brain or the heart of the machine, and on an old unit they tend to bring friends.
Bosch and Miele get a longer window; builder-grade gets a shorter one
Bosch and Miele. Heavier stainless tubs, better pumps, quieter motors, and parts that stay available for years after the model is gone. When one of these needs a control module or a pump at year 10, I still usually recommend the repair, because the rest of the machine has real life left and a comparable new one costs considerably more than a basic unit. Bosch's common failures are well understood: the E15 leak-sensor trip (often a real small leak, sometimes just condensation), the heat pump assembly, and the control module. All repairable. For everything Bosch, see Bosch appliance repair.
Builder-grade. Plastic tub, basic pump, a mechanical or simple electronic control. These machines were built to a price, and the price sets the repair budget. Cheap failures are worth fixing; the first expensive failure past about 8 years is usually the end. There's no shame in that. It did the job it was priced to do.
Mid-range Whirlpool, KitchenAid, GE, Samsung, LG. In between. Good pumps and reasonable parts pricing on the Whirlpool family, including KitchenAid; boards and touch panels are the weak spot on the electronics-heavy Samsung and LG models. Judge them on the table below.
The decision table
The 50% rule is the standard: repair if the written estimate is under half of a comparable new machine. Then adjust for age and repair history. Here's how it lands in practice:
| Age | Cheap fix (pump, valve, latch, float, filter) | Expensive fix (board, circulation pump, tub) |
|---|---|---|
| Under 8 years | Repair. | Repair, except a cracked tub. |
| 8 to 12 years | Repair. | Bosch/Miele: usually repair. Builder-grade: usually replace. Mid-range: run the 50% numbers. |
| Over 12 years | Repair if it's the first failure and the tub is sound. | Replace, with Bosch/Miele as the occasional exception. |
Two more rules that override the table. Second major repair in twelve months: replace. Tub rusting or cracked: replace, regardless of age or brand. And one that goes the other way: if the machine is built into custom cabinetry or a panel-ready kitchen, replacement is a project, not a purchase, and that pushes the repair window out. The same reasoning, with a very different parts list, applies to the fridge: is it worth repairing a refrigerator.
How many people are asking this
Ubersuggest counts about 70 U.S. searches a month for "is it worth repairing a dishwasher," and the shape is telling: the two 90-search months are January and February, right after the holidays put a month of heavy use through everyone's machine, and the low point is May. A dishwasher that limps through Thanksgiving tends to quit in the new year.
Search data: Ubersuggest, national monthly volume, last 12 months. The January-February bump is the holiday-season bill coming due.
Expert opinion — Anatoli Didenco, owner, Perfect Appliance Repair Tampa. My rule for dishwashers: clean the filter, then ask which part failed, then ask how old it is, in that order. A drain pump, inlet valve, latch or float switch is worth replacing on almost any machine that isn't rusting. A control board or circulation pump is worth it on a Bosch or Miele at almost any age, on a mid-range unit under about 10 years, and on a builder-grade unit only when it's young. I'd rather tell you to buy a new dishwasher than sell you a board for one that's about to need a pump. You get the written answer after the $69 diagnostic, and the fee goes toward the repair if you approve it. That's how I've worked for 20+ years of hands-on technical experience, and it's why people call back.
Before you let anyone open your dishwasher
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And the honest part: if a clean filter fixes it, you don't need me. If it's a 13-year-old builder-grade unit with a dead board, you don't need me either; you need a shopping trip, and I'll say so.
Is it worth repairing a dishwasher — quick answers
Is it worth repairing a 10-year-old dishwasher?
For a cheap failure such as a drain pump, inlet valve, door latch or float switch, yes. For a control board or circulation pump on a builder-grade unit, usually not. On a Bosch or Miele the repair window runs longer.
How long does a dishwasher last?
About 9 to 12 years for most brands. Builder-grade units land at the low end, Bosch and Miele often run 12 to 15, and hard water shortens everything by scaling up the pump, heater and spray arms.
What is the most common dishwasher repair?
Drain problems, and a good share of them are a clogged filter or a piece of glass in the drain pump rather than a failed part. Inlet valves, door latches and float switches round out the cheap, common list.
When is a dishwasher not worth fixing?
When the tub is cracked or rusting, when the main control board or circulation pump fails on a unit past 10 years, or when this is the second major repair in a year. Those are replacement conversations.
Are Bosch dishwashers worth repairing?
Yes, longer than most. The build quality is higher, parts stay available for years, and the machine usually has plenty of life left after a pump or module replacement. The same goes for Miele.
Should I clean the filter before calling for repair?
Always. On most dishwashers built in the last 15 years the filter twists out of the tub floor by hand. A clogged filter causes poor cleaning, standing water and odors, and clearing it costs nothing.
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Anatoli Didenco is the owner-technician of Perfect Appliance Repair Tampa, with 20+ years of hands-on technical experience in refrigeration and appliance repair across Hillsborough, Pinellas, and Pasco Counties. He specializes in refrigerators — particularly Sub-Zero, Wolf, and premium built-in systems — and sealed-system and compressor work. He answers the phone, and either he or Nick, his technician, shows up at the door. Read more on the About page.
Perfect Appliance Repair Tampa serves Tampa, South Tampa, Wesley Chapel, Zephyrhills, Dade City, and the surrounding Tampa Bay area. Reviews are available on the company’s Google Business Profile and BBB listing.
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