Your dishwasher is better than you think (tips, tricks, and how they work)

A dishwasher is essentially a waterproof box with spray arms that act like sprinklers, recirculating a small amount of water (about a gallon) to clean dishes. It uses a pump to force water through the spray arms, and this spraying action is what cleans. The water is recirculated, and periodically drained and refilled, typically repeating this sequence several times.

Many dishwashers have a removable filter at the bottom that catches food debris. Regularly cleaning this filter is crucial for optimal performance, as a clogged filter can significantly impair cleaning effectiveness. Some dishwashers have a macerator instead of a filter, which grinds up food bits.

Hot water is essential for effective dishwashing, especially for greasy dishes. Dishwashers have a heating element, but in North America, they are often connected to the hot water supply. To ensure your dishwasher starts with hot water, run the hot water tap in your kitchen sink until it's properly hot immediately before starting the dishwasher. This ensures the first fill is hot, which is critical for dissolving fats and activating enzymes in the detergent.

Dishwasher detergents contain powerful chemicals like enzymes, surfactants, emulsifiers, and dispersants that work together to break down food, reduce surface tension, and prevent re-deposition. The detergent dispenser is critical because the dishwasher is designed to release detergent during the main wash cycle, after the initial pre-wash water (which gets very dirty quickly) has been drained. Using the dispenser ensures the detergent is released at the optimal time for effective cleaning.

Traditional powdered detergents are often more effective and cost-efficient than pods, especially if used in both the main wash dispenser and a pre-wash compartment (or by adding a small amount to the tub directly). This two-dose approach ensures there's detergent to tackle initial soils during the pre-wash, improving overall cleaning. Powdered detergents also allow for flexible dosing based on water hardness and dish soil level.

The video debunks marketing claims around 'CycleSync' technology in some detergent pods, demonstrating they dissolve quickly and don't offer timed release unless placed in the dispenser. It advocates for the use of powder or gel detergents as they allow for variable dosing based on water hardness and soil level. Overdosing can lead to residue, so using less than a full dispenser cup is often sufficient.

If problems persist, try a dishwasher cleaning product to remove limescale and buildup. If the dispenser is broken, consider replacing it or exploring alternative cycles like 'Express' or 'Eco' which might release detergent earlier. Utilizing rinse aid is highly recommended to prevent water spots, especially in hard water areas. Lastly, proper loading of dishes, ensuring dirty surfaces face downward and spray arms can rotate freely, is crucial for effective cleaning.