Running water in the sink before starting a dishwasher is recommended for a few reasons:
Hot Water Supply: Dishwashers are more effective at cleaning dishes when they use hot water. By running hot water in the sink before starting the dishwasher, you ensure that the dishwasher begins its cycle with hot water immediately. This can lead to better cleaning results and help dissolve detergent more efficiently.
Remove Cold Water: When a dishwasher starts its cycle, it often begins by draining any standing water from the previous use. If you start the dishwasher with cold water in the pipes, it can lead to the initial water in the dishwasher being colder than desired. This can affect the overall cleaning performance, as the dishwasher will have to work harder to heat the water.
Avoid Temperature Shock: Rapid changes in water temperature can stress the dishwasher's heating element and other components. By running hot water in the sink first, you reduce the risk of subjecting the dishwasher to sudden temperature changes, which may extend the lifespan of the appliance.
Energy Efficiency: Starting the dishwasher with hot water can save energy because the appliance won't need to use as much electricity or gas to heat the water for washing.
To follow this practice effectively, you can run the hot water tap in the sink until it reaches its maximum temperature before starting the dishwasher. Let the water run for a short while to ensure that any cold water in the pipes is flushed out, and hot water is readily available for the dishwasher.
By taking this simple step, you can help improve the dishwasher's cleaning performance, save energy, and potentially extend the life of the appliance.