The most common dishwasher issues I see are dishes not coming out clean, poor drainage, unpleasant smells, cloudy glassware and reduced drying performance. In many cases, the cause is related to maintenance, loading habits or detergent use. However, recurring problems can also indicate a technical fault that requires professional attention.
If dishes are still dirty after a cycle, there are several possible reasons. Often it's something simple, such as blocked spray arms, incorrect loading or a water hardness setting that hasn't been adjusted correctly. Running low on dishwasher salt or using the wrong amount of detergent can also affect cleaning performance. If the issue becomes consistent across multiple cycles, it's worth investigating further to determine whether the appliance is operating as intended.
A dishwasher that finishes a cycle with water left inside usually has a drainage issue. One of the first things I recommend checking is the filter, as food debris and other particles can restrict water flow. It's also worth inspecting the drain area beneath the filter for blockages. If cleaning doesn't resolve the problem and water continues to collect after each cycle, professional service may be required.
If dishes are coming out wet, the issue may be related to rinse aid levels, programme selection or how the dishwasher is loaded. Some programmes are designed to use less energy and may leave more moisture behind. If drying performance has changed noticeably across different cycles, the appliance may need attention.
Bad smells are usually caused by food residue, moisture and build-up inside the dishwasher. Filters, door seals and hidden areas of the appliance can gradually collect debris if they aren't cleaned regularly. I also see cases where households mainly use short programmes, which may not always provide a thorough cleaning of the appliance itself. Regular maintenance can help prevent odours, but if smells persist alongside poor cleaning or drainage performance, it may indicate a deeper issue.
Cloudy glassware are often related to rinse aid levels, water hardness settings or the condition of the glassware itself. In some cases, glasses become worn after years of use and can no longer achieve the same clear finish. If marks continue appearing despite proper detergent, rinse aid and water hardness settings, it's worth checking whether the dishwasher is delivering the cleaning performance it should.
