How Long Do Dishwashers Last? Real Lifespan and When to Replace

When you buy a new dishwasher, a kitchen appliance designed to clean dishes automatically using water and detergent. Also known as a dishwashing machine, it’s one of the most used appliances in the home—running nearly every day. But how long will it actually last? Most last between 8 to 12 years, but that’s only if you treat it right. Skip the maintenance, and it might give out before five.

What kills a dishwasher faster? Clogged filters, hard water buildup, and ignoring small leaks. A faulty pump or broken spray arm can cost $200 to fix—but if your unit is already 10 years old, replacing it might save you more in energy bills. New models use nearly half the water and electricity of ones from 15 years ago. And if you’re still running a dishwasher from the 2000s, you’re probably paying extra every month without realizing it.

Dishwasher repair, the process of diagnosing and fixing mechanical or electrical faults in a dishwasher. Also known as appliance repair, it’s often worth it for units under 8 years old—if the part is still available. But if your control board is fried or the tub is rusted, you’re throwing money into a sinking ship. Appliance longevity, how long a home appliance remains functional and efficient. Also known as lifespan, it’s not just about age—it’s about how well you clean the filter, avoid overloading, and check the door seal every few months.

Hard water is the silent killer. If your water leaves white spots on glasses, your dishwasher’s heating element and spray arms are slowly getting coated in mineral gunk. Flushing it out once a year with vinegar or a dedicated cleaner can add years to its life. And don’t forget the filter—most people never clean it, then wonder why dishes come out gritty. It’s not magic, it’s just basic care.

Some brands hold up better than others, but even the most expensive models fail if they’re abused. A dishwasher that runs nonstop, gets jammed with pots and pans, or is connected to a faulty water line won’t last. The real question isn’t just how long it lasts—it’s how much you’re willing to spend keeping it alive. If you’ve spent $300 on repairs in the last two years, it’s time to think about replacement.

That’s why we’ve pulled together real stories and fixes from homeowners in Hinckley and beyond. You’ll find guides on diagnosing common failures, whether it’s worth fixing a 6-year-old unit, how to spot early signs of failure, and even how to pick a new one that won’t quit on you in three years. No fluff. No sales pitches. Just what actually works.