The short answer: dishwashers live about 9–13 years, so age does most of the deciding. A mid-life dishwasher with a cheap fault — a pump, a valve, a blocked drain — is usually worth repairing. An older dishwasher facing a major part, such as a circulation motor or control board, is usually not, because a complete new machine is comparatively inexpensive and the old one has little life left to sell you. That is the dishwasher version of the general framework in our appliance repair vs replace guide: compare the machine’s age with its lifespan, compare the quote with the price of new, and let those two ratios lead. If you want the verdict on your own numbers straight away, run them through our repair vs replace calculator.
Typical dishwasher repair costs
These are typical US repair ranges at around 2025 levels. They are planning figures only, never a quote — your price will vary by brand, region and model, and call-out and labour charges differ widely:
- Drain pump: $150–$350
- Water inlet valve: $120–$250
- Circulation pump / motor: $250–$500
- Control board: $250–$450
- Racks and seals: $50–$200 — often a realistic DIY job
Set those against the price of the alternative: a new dishwasher typically runs about $450–$1,200 installed, again as a US range that varies by brand, region and model. That relatively low replacement price is what makes dishwashers different from, say, refrigerators. When a single part costs $400 and a whole new machine costs $600, the part has to come with a lot of remaining life attached to be worth buying — and on an older machine, it does not. This is the 50 percent rule doing its work: once a repair passes half the price of new, replacement usually takes over.
The leak factor: the dishwasher’s special risk
Every appliance in this series has one factor that is uniquely its own, and for dishwashers it is water. A dishwasher is plumbed in, sits over your floor, and often runs while nobody is watching — sometimes while nobody is home. An ageing machine that starts to leak, even slowly, can damage flooring, cabinets and the ceiling below, and that damage can cost far more than the machine itself ever would. A one-off leak from a split hose on a young machine is a cheap repair. Persistent leaks on an older unit — perished seals, a corroding tub, a pump housing weeping at the joints — push hard toward replacement, whatever the pure repair maths says, because you are not just buying a part. You are buying back the risk.
Efficiency: a real but secondary gain
A new dishwasher also sips where an old one gulps. Modern machines typically use roughly 3–4 gallons of water per cycle, against 6–10 gallons or more for older models, and they wash more quietly — a genuine quality-of-life gain in an open-plan kitchen. Heated water is not free, so the savings are real over a year of daily cycles. Treat efficiency as a tie-breaker rather than the main argument, though: unlike a refrigerator, which runs around the clock, a dishwasher only runs for an hour or two a day, so the savings rarely justify replacing a healthy mid-life machine on their own. Our refrigerator repair vs replace guide covers the appliance where the energy argument really does lead. For the dishwasher, put your age and quote into the repair vs replace calculator and let efficiency nudge a close result, not decide it.
Worked examples
Example 1: a 4-year-old dishwasher, dead drain pump at $200
At 4 years old, this machine is not yet halfway through its expected life, and it has seven or more good years in front of it. The $200 repair — squarely inside the typical US range for a drain pump — is only about 15–20% of the price of a comparable new dishwasher installed. It passes the cost test and the age test with room to spare. Repair it, and check the drain hose and seals while the machine is out, so the same visit deals with the most likely next leak.
Example 2: an 11-year-old dishwasher, control board at $400
At 11 years, this machine is near the end of its 9–13 year life. The $400 control board quote is over half the price of a decent new dishwasher — and it buys a machine whose pump, motor, racks and seals are all 11 years old too, any one of which could fail next season. The repair fails the cost test and the age test at the same time. Replace it, and put the $400 toward a quieter, thriftier machine with a full warranty. If your numbers sit between these two examples, the Repair vs Replace Calculator will weigh the age, the quote, your breakdown history and any warranty together and give you a single verdict.
Frequently asked questions
How long do dishwashers last?
Typically 9–13 years under normal household use. Machines at the lower end of that range, or heavily used family machines, may show their age sooner; lightly used machines can run longer, though seals and hoses age whether the machine is used or not.
What is the most common dishwasher repair?
Drainage problems top the list: a failing drain pump, a faulty water inlet valve, or a simple blockage in the filter, hose or spray arms. Because several causes share the same symptoms, a machine that will not drain is not automatically an expensive repair — check for blockages before pricing parts.
Is a $300 repair worth it on a 7-year-old dishwasher?
It is genuinely borderline. At 7 years the machine is past half its typical life, and $300 is around half the price of a modest new machine. Apply the 50 percent rule honestly, then apply the leak test: if the machine is dry, sound and has been reliable, a repair can be defensible; if it has leaked or needed work before, replace it.
Can I replace a dishwasher myself?
It is possible for a handy person — the machine slides out, and the water, waste and electrical connections are standard. But it combines water and electrics in a tight space, the new machine must sit level to seal and drain properly, and a small fitting error can leak unnoticed for weeks. For those reasons many people choose professional installation.