How Long Does a Dishwasher Last? Signs It's Time to Replace Yours

A dishwasher is one of the hardest-working appliances in the home. If you run it once or twice a day, that's 365–730 cycles per year. So how long should a dishwasher last, and when should you replace rather than repair?

How Long Do Dishwashers Last?

A good quality dishwasher should last 10–13 years with regular maintenance. Premium brands like Bosch and Miele are known to last 12–15 years or more. Budget brands may start showing problems at 8–10 years.

The main factors affecting lifespan are: how frequently it's used, how well it's maintained (especially the filter), water quality in your area, and the build quality of the machine.

Signs Your Dishwasher Needs Replacing

1. It's No Longer Cleaning Properly

If you've cleaned the filter, descaled the machine, refilled the rinse aid and checked the spray arms — and dishes are still coming out dirty — the pump, motor or wash system may be failing.

2. It's Leaking

Water pooling under or around the dishwasher is serious. Minor door seal leaks can be repaired, but leaks from the pump, hoses or tub are expensive to fix and often signal a machine near the end of its life.

3. It Won't Drain Properly

Water sitting in the bottom of the dishwasher after a cycle, despite a clean filter, usually indicates a failing pump or drain hose issue. This can be repaired but is worth evaluating against the machine's age.

4. It's Making Unusual Noises

Grinding, rattling or loud humming can indicate a failing motor, broken spray arm or debris in the pump. Some noises are minor fixes; persistent motor noises in an older machine usually mean it's time to move on.

5. The Door Latch Doesn't Work

Dishwashers won't run with a faulty door latch. This is usually repairable on newer machines but may not be worth fixing on a dishwasher that's already 10+ years old.

6. It Costs More to Repair Than to Replace

The general rule: if the repair cost is more than 50% of the cost of a comparable new machine, replace it. Modern dishwashers are significantly more water-efficient and effective than machines from 10+ years ago, so there's a real running cost benefit to upgrading.

How to Make Your Dishwasher Last Longer

• Clean the filter monthly
• Use quality detergent and keep the rinse aid topped up
• Descale every 3–6 months in hard water areas
• Scrape (don't rinse) plates before loading
• Run a maintenance cycle with a commercial dishwasher cleaner monthly

Shop Dishwashers at Oceania Appliances

If it's time for a new dishwasher, we carry a wide range from leading brands. Free Sydney delivery, 3–6 month warranty on every purchase. Browse online or visit our Wetherill Park showroom.