Modern detergents are now formulated to work well at lower temperatures. Noah Pinsonnault of the Good Housekeeping Institute says they can clean everyday dirt without the need for hot water.

Cold water also stops dyes from bleeding. For dark or brightly coloured garments, this reduces colour transfer and fading, helping the clothes stay vibrant longer.

Denim benefits the same way. Washing jeans in cold water preserves the original shade and limits dye loss, especially in darker denim.

Delicate items such as lace, silk, satin, as well as activewear, swimwear and knitwear, are less likely to shrink, stretch or lose elasticity when the wash is cold and gentle.

Even stains that haven’t been treated yet are safer to start in cold water; heat can set protein‑based marks like fresh blood, making them harder to remove later.

Because most of a washing machine’s power is used to heat water, selecting a cold cycle can cut electricity consumption dramatically, lowering your household energy bill.

To get the best results, turn garments inside out, use a mesh laundry bag for delicates, choose a short or delicate program, and air‑dry whenever possible.