Yes, a dishwasher typically requires an external water source to function properly. Dishwashers are designed to be connected to the household's hot water supply for efficient cleaning. The hot water helps to dissolve and remove grease and food residues from the dishes more effectively than cold water.
During the installation process, the dishwasher is usually connected to the hot water line under the kitchen sink. This connection allows the dishwasher to draw water from the same supply used for the sink faucet. Additionally, there is usually a drain hose connected to the dishwasher, which carries the used water away to a drainage system or garbage disposal.
If you're considering installing a dishwasher and don't have a water supply readily available, you may need to consult a plumber or a professional installer to assess the feasibility of adding a water connection to your desired dishwasher location. Proper installation is essential to ensure the dishwasher operates safely and efficiently.