Is It Worth Repairing My Dishwasher?

Average UK labour and parts costs — always get multiple quotes from local engineers.

A dishwasher should comfortably last 9–13 years. Regular cleaning of filters and running a monthly maintenance wash will extend the life significantly. Budget models may only manage 6–8 years, while quality brands like Bosch and Miele are known to run 15+ years.

Under 6 years old? Almost certainly worth repairing — repair costs are usually well under half the replacement cost. Between 6–10 years, consider both the repair cost and whether it's the first or repeat fault. Over 10 years, factor in that newer dishwashers use significantly less water (6–9 litres per cycle vs 12–15 litres in older models), making replacement more financially attractive.

UK dishwashers come in two main formats. Freestanding models sit independently and can be placed anywhere with access to water and drainage — they're easier to replace and typically cheaper to buy, starting from around £250. Integrated (built-in) dishwashers are fitted behind a kitchen unit door for a seamless look. They cost more to replace (£400–£1,000+) because fitting requires matching your existing kitchen cabinetry. Slimline models (45cm wide) are available in both types for smaller kitchens. From a repair perspective, freestanding models are generally easier and cheaper to work on because access to components is simpler — something worth considering if you're weighing up repair vs replacement.

• Persistent leaking from the base — water pooling underneath often points to a cracked tub or corroded internal pipework, which can be uneconomical to repair on older machines.
• Dishes consistently not clean — if cleaning the filter, spray arms, and running a maintenance cycle doesn't fix the problem, the wash motor may be failing.
• Loud grinding or banging noises — unusual mechanical noises during a cycle typically indicate worn bearings in the wash pump, which can be expensive to replace.
• Error codes that keep returning — recurring fault codes after a repair suggest a deeper underlying issue, often with the control board or wiring loom.
• Rust inside the tub — visible corrosion inside the wash cavity is a sign the dishwasher is reaching end of life and further repairs are unlikely to be worthwhile.

Modern dishwashers have become significantly more efficient. An A-rated model uses around 6–9 litres of water per cycle compared to 12–15 litres in machines from a decade ago. At current UK electricity prices (roughly 24p per kWh), an efficient dishwasher costs around £40–£55 per year to run — and is actually more water-efficient than washing the same load by hand. If your current machine is over 10 years old, upgrading to a new energy-efficient model could save £20–£30 per year on combined water and electricity bills. Look for the EU energy label (now A to G scale) when shopping — every step up the scale represents meaningful savings over the machine's lifetime.

Dishwashers are one of the more repairable kitchen appliances, and many common faults have simple fixes that don’t require a professional. Before paying for a callout (typically £50–£80 just for the visit), it’s worth checking a few things yourself.

Safe DIY Repairs

• Cleaning blocked filters and spray arms — save £60–£100. The most common cause of poor cleaning. Remove the bottom filter and spray arms, clear debris, and rinse under the tap.
• Replacing a broken door latch or seal — save £70–£120. Replacement parts cost £10–£30 online. Most door seals simply pull out and push back in without tools.
• Unclogging the drain hose or checking the waste connection — save £60–£90. A kinked or blocked drain hose is a frequent cause of standing water. Disconnect, flush, and refit.

Always Hire a Professional

• Replacing a faulty circulation pump or wash motor (£120–£250) — Requires partial disassembly of the appliance and working near electrical connections. Incorrect fitting can cause leaks or electrical faults.
• Diagnosing and replacing a failed control board (£150–£280) — Electronic faults need proper diagnostic tools. Boards are expensive and non-returnable if misdiagnosed — a professional can confirm the fault first.
• Fixing a leaking internal water inlet valve (£80–£160) — Involves working with pressurised water connections inside the appliance. A poor repair risks water damage to your kitchen floor and cabinets.

Before calling an engineer, check if your dishwasher is still under the manufacturer’s guarantee or if you have appliance cover — many repairs may already be covered.