Hot water wears out fabrics more quickly. Save the hot water for really soiled loads—kids’ baseball uniforms, gardening clothes, dirty sheets—and wash everything else in cold. Even if a garment says wash in hot water, washing in cold won’t hurt it (washing a cold water garment in hot, however, can be damaging). Your clothes will be just as clean, and the threads will stay strong. Check out Tide Coldwater, a specially formulated liquid detergent for cold water washing.