Dishes Still Dirty? How to Load a Dishwasher the Right Way (and 5 Maintenance Habits That Make It Last)
Here's a secret appliance technicians know: most "my dishwasher doesn't clean" service calls end with no parts replaced. The machine was fine. The problem was how it was loaded, what went into it, or a filter that hadn't been touched in three years.
Modern dishwashers are impressive — many use less water than washing by hand and run at under 50 dBA. But they're also pickier than the units many of us grew up with. Here's how to get spotless results and a long life out of yours.
Stop pre-rinsing (seriously)
This one surprises people. Dishwashers built in the last decade have turbidity sensors that measure how dirty the water is and adjust cycle length and water use accordingly. If you rinse everything spotless first, the sensor thinks the load is nearly clean, runs a short, gentle cycle, and leaves behind the baked-on bits it would otherwise have tackled. Detergent enzymes also need food soils to work on. So: scrape off the chunks, skip the rinse, and let the machine do its job. You'll save time and up to 90 litres of water per load.
How to load the bottom rack
- Plates face the centre. The spray arm sprays outward from the middle, so angle plates and bowls toward it, not away.
- Pots, pans and casserole dishes go on the sides or back, face down — never over the centre where they block water from reaching the top rack.
- Don't nest. Two bowls stacked together will come out with a clean top bowl and a dirty bottom one.
- Leave the spray arm free. Before you close the door, give the arm a spin by hand. If a pot handle or baking sheet stops it, rearrange.
How to load the top rack
- Cups and glasses between the tines, not over them. Sitting a glass on top of a tine leaves a water ring and can crack it.
- Angle everything slightly so water drains off instead of pooling in the base of an upside-down mug.
- Plastics go up top, away from the heating element at the bottom.
- Long utensils lie flat on the top rack or in the third rack if your model has one — a spatula standing in the basket will jam the top spray arm.
The cutlery basket
Mix forks, knives and spoons within each section so they don't spoon together. Knives go point-down for safety; forks and spoons can go handle-down for a better clean. If your model has a third rack for cutlery, use it — it frees up a surprising amount of bottom-rack space.
Settings that actually matter
Rinse aid is not optional. Cloudy, spotty glasses are almost always a rinse-aid issue, not a detergent issue. It lowers water's surface tension so droplets slide off rather than drying into spots. Top it up every month or so.
Use the right detergent amount. Pods are convenient but often overkill for small loads, and in soft-water areas (common across parts of Ontario) too much detergent leaves a white film. If you use powder or gel, try using a bit less.
Run hot water at the sink first. Dishwashers pull from your hot-water line. Running the kitchen tap until it's hot means the first fill is hot instead of lukewarm, which makes a real difference on the main wash.
Heated dry vs. air dry. Heated dry uses noticeably more energy. Most Bosch, Miele and newer LG/Samsung units use condensation drying instead — crack the door open when the cycle ends and things dry fine. On any machine, opening the door for a few minutes after the cycle speeds drying and costs nothing.
Five maintenance habits that add years to a dishwasher
- Clean the filter monthly. Almost every dishwasher made since 2010 has a removable cylindrical filter in the floor of the tub. Twist it out, rinse it under the tap, scrub with an old toothbrush. This takes two minutes and fixes the majority of "smells bad" and "gritty dishes" complaints.
- Wipe the door gasket. Food and grime collect in the rubber seal around the door, especially along the bottom edge. A damp cloth once a month keeps it from leaking or growing mildew.
- Check the spray arm holes. Pop the arms off (most just unclip or unscrew) and use a toothpick to clear any jets blocked with seeds, labels or mineral scale.
- Run a hot empty cycle with vinegar or a descaler every couple of months. Place a cup of white vinegar upright in the top rack and run the hottest cycle. It clears mineral buildup and neutralizes odours. In hard-water areas, use a proper dishwasher cleaner instead.
- Don't slam the door. Latches and door springs are among the most common repair items. Close it firmly but gently.
When it's time for a new one
If you've done all of the above and you still have a dishwasher that leaks, won't drain, or runs so loud you can't hold a conversation, the math often favours replacement — especially on an older unit that's already a decade in. And that's where buying smart comes in.
A brand-new Bosch, KitchenAid or LG dishwasher at a big-box store can run $1,000 to $1,800 plus tax. At Oxbury, the same models arrive as open-box or scratch-and-dent units — often with nothing more than a scuffed side panel you'll never see once it's installed — for hundreds less. Factory-refurbished units are inspected, tested and backed by our warranty, and every dishwasher we sell is a current model from a brand you'd recognize.
Ready to upgrade? Browse our full selection of 24-inch built-in dishwashers — new box, open box and factory refurbished — and pick one up in store or have it delivered across Ontario.