Have you ever loaded your dishwasher, pressed start, and wondered how much longer it will keep running smoothly? A dishwasher is a kitchen essential, but like any appliance, it won’t last forever. If yours has started leaving dishes less than sparkling, making strange noises, or needing frequent repairs, you’re probably asking: How long do dishwashers last?
On average, a dishwasher lasts about 10 years, but that number can vary. Some top dishwasher brands, like Bosch, are known for their longevity, while others may break down sooner. Regular maintenance can extend your dishwasher’s lifespan, but ignoring it can lead to clogs, buildup, and even rust.
In this guide, I’ll break down the factors that affect how long a dishwasher may last. You’ll learn when to repair your dishwasher and when it’s time for a new dishwasher.
How Long Should a Dishwasher Last?
Most dishwashers last between 7 and 16 years, with the average lifespan around 10 years. However, several factors determine how long yours will remain functional. Usage frequency, maintenance habits, and build quality all play a role in its longevity.
Brand quality matters. Some dishwasher brands, such as Bosch, KitchenAid, Whirlpool, and Samsung, tend to last about a decade. Others, like Frigidaire, Kenmore, and Electrolux, can exceed 10 years with proper care. High-end models, like those from Miele, are designed to function for up to 20 years.
Usage impacts longevity. Households that run their dishwasher daily will see more wear over time, leading to increased repairs. In contrast, occasional use can extend the unit’s life, provided it’s properly maintained.
Regular maintenance is essential. Cleaning the interior, checking the door seal, and ensuring the spray arms remain unobstructed can prevent premature breakdowns. Proper use of detergent, preventing clogs, and avoiding food particle buildup also improve lifespan.
When breakdowns occur, deciding between repair and replacement depends on cost and efficiency. If repairs exceed 50% of a new dishwasher’s price, replacement is usually the better option.
How Can We Maximize Dishwasher Lifespan?
Taking proper care of a dishwasher extends its lifespan and reduces the need for repairs. These essential maintenance steps can keep your appliance running efficiently for years.
Keep the Dishwasher Clean
Over time, grease, food particles, and mineral buildup can affect performance. Regularly clean the interior, spray arms, and drain the filter to prevent clogs. Wipe down the door seal with a damp cloth to prevent leaks and foul odor. A monthly deep clean using a dishwasher-safe cleaner or white vinegar can help maintain efficiency.
Use Hot Water
Hot water improves cleaning performance by dissolving detergent properly and sanitizing dishes. The FDA recommends setting your home dishwasher temperature to at least 120°F for optimal results. Running the kitchen faucet until the water is hot before starting a cycle ensures consistent heat.
Scrape Off Food Debris
While modern dishwashers handle small bits of food, larger debris can cause clogs and strain the drain system. Scrape off excess food before loading dishes to prevent buildup in the filter and ensure a more effective clean.
Load Dishes Properly
Overloading prevents water from reaching all surfaces, reducing cleaning efficiency. Place dishes with space between them, ensuring the spray arms can rotate freely. The top rack is best for glasses and lighter items, while heavier cookware should go on the bottom.
Air Dry When Possible
The heat-dry cycle uses more energy and may stress components over time. Instead, select the air-dry setting or leave the door slightly open after a cycle to let dishes dry naturally. This reduces wear on heating elements and prevents excess moisture buildup.
Check for Rusting Racks
Rust on the rack can flake off, leading to potential clogs and staining dishes. If you notice rust spots, apply a dishwasher rack repair coating to prevent further deterioration. Replacing damaged racks promptly helps avoid larger issues.
Perform Regular Maintenance
Inspecting your dishwasher periodically can help diagnose minor issues before they lead to costly repairs. Check the door seal for leaks, ensure the drain is clear, and remove any trapped food particles from the filter. Keeping up with regular maintenance significantly improves the longevity of your appliance.
When to Repair or Replace the Dishwasher?
A dishwasher can last for years, but at some point, it may develop issues that require attention. Knowing whether to repair or replace the unit depends on its condition, age, and performance.
When to Repair the Dishwasher
If your dishwasher shows minor issues, a repair can extend its lifespan and save money. Consider repairing if:
- Rust spots are minor – Small rust patches on the rack or interior can often be treated rather than replacing the unit.
- Loud noises occur suddenly – Strange sounds could indicate a failing motor or a loose part, which is usually repairable.
- Dishes come out dirty – If food debris remains after a cycle, the spray arms, filter, or detergent dispenser may need cleaning or replacement.
- Water isn’t draining properly – A clogged drain, faulty pump, or blocked filter can often be fixed without replacing the entire appliance.
- Extended wash cycles – A failing thermostat might cause longer cycles but is usually replaceable.
- Dishwasher won’t fill with water – A clogged filter or defective water inlet valve may need cleaning or replacement.
- Leaking issues – A worn-out door seal, damaged spray arms, or improper detergent use can cause leaks, which are usually fixable.
When to Replace the Dishwasher
If your dishwasher has persistent issues or is nearing the end of its lifespan, replacing it may be the best option. Consider a replacement if:
- It’s over 10 years old – Most dishwasher brands last around a decade, but efficiency declines over time.
- Parts are hard to find – Older models may have discontinued parts, making repairs costly or impossible.
- It uses excessive energy or water – Upgrading to a modern, energy-efficient appliance can reduce utility bills.
- Frequent breakdowns occur – If repairs are becoming too frequent, investing in a new dishwasher is more cost-effective.
- Rust is widespread – Deep rust can weaken the unit’s structure and affect longevity.
- Major component failure – If the motor, control panel, or heating element fails, replacing the unit is often more practical than fixing it.
A well-maintained dishwasher may last 16 years, but when repairs become too expensive or ineffective, upgrading to a more reliable model is the better choice.
Conclusion
A dishwasher can last for years, but its lifespan depends on usage, maintenance, and overall quality. On average, a well-maintained appliance can run efficiently for about 10 to 16 years.
To extend its life, regular cleaning, proper loading, and timely repairs are essential. Keeping the filter, spray arms, and door seal free of buildup ensures smooth operation. Addressing small repairs early can prevent costly replacements.
However, if the dishwasher is over a decade old, frequently breaks down, or consumes excessive water and energy, it may be time for a new dishwasher. Investing in an upgraded model can improve performance and efficiency.
By following these tips, you can maximize your dishwasher’s longevity, reduce repairs, and keep your dishes sparkling clean for years to come.
FAQs
Is It Worth It to Fix a Dishwasher?
Fixing a dishwasher is worth it if the repair costs less than $300 and the appliance is under 10 years old. For older models, replacing expensive components like motors or pumps may not be cost-effective. If repairs exceed half the cost of a new dishwasher, replacement is better.
Which Brand of Dishwasher Lasts the Longest?
Miele dishwashers have the longest lifespan, lasting up to 20 years with proper maintenance. Bosch and Thermador also offer durability, averaging 10–15 years. Regular cleaning, proper detergent use, and repairs when needed help extend the longevity of any dishwasher brand.
Do More Expensive Dishwashers Last Longer?
Premium dishwasher brands like Miele and Bosch generally last longer due to superior materials and components. However, longevity depends on maintenance, frequency of use, and repairs. A high price alone doesn’t guarantee a longer lifespan, but well-built models with proper care can outlast cheaper alternatives.
Can a Dishwasher Last 20 Years?
Yes, high-quality brands like Miele can last up to 20 years with regular maintenance and proper usage. Most other dishwashers have an average lifespan of 10–15 years, but routine cleaning, avoiding clogs, and timely repairs help maximize longevity.
