Fades the dyes in some colored clothes. Tends to cause wrinkling in some modern fabrics such as permanent press. Warm water Usually gets lightly soiled clothes clean. Does not kill germs unless a disinfectant is added. Is safe for most colored clothes.
Cold water Requires a cold water detergent to get clothes clean.
If a cold water detergent is not available, dissolve detergent powder in hot water before adding it to the wash water. Requires more detergent than warm water to get clothes clean. Does not kill germs unless a disinfectant is added. Recommended for washing some delicate fabrics. Water reaching the washing machine is cooler than in the water heater.