How do you select the correct water temperature for laundry in your washing machine? Most people set them once and never change the load size, type of cycle or water temperature. That's a mistake that not only wastes money spent on utility costs but can leave clothes filled with odor-causing bacteria, makes clothes look old before their time or even ruins them.
Generations of housekeepers thought that hot water was the only way to get clothes clean (remember clothes were once boiled in a big pot for hours). But progress has brought us different types of fabrics, much better washing machines that use mechanical action to remove soil, and far better laundry detergents that use surfactants and enzymes to lift and remove soil from fabrics.
Commercial laundry detergents can be safely used in any water temperature; however, results may vary. For best results when using lower water temperatures, choose a heavy-duty detergent (Tide and Persil are leading brands) to remove heavy soil. Lower priced detergents just don't have enough cleaning ingredients to get clothes completely clean in cold water.
How to Choose the Best Water Temperature for Laundry
Read Garment Care Labels
Sort Dirty Laundry
Opt for Cold Water First
If the label is missing or unclear, wash soiled clothes, particularly colored clothes, with cold water. Using the cold water setting will cause the least damage to fabrics like shrinking, fading or color bleeding. If you are not satisfied with the stain removal results, you can then move on to warm or hot water. Once you have some experience under your belt, you'll find that some fabrics can be cleaned at more than one temperature.
Set the Rinse Cycle Temperature
One tip that works with all wash cycles and types of fabrics, is to use a cold water rinse. Rinse water has little effect on stain removal or cleaning; so cold water works just as well to rinse away detergents and suspended soil. Set the washer dial on cold rinse and leave it for every load. You'll save money by not paying to heat the water.
Water Temperature Guide for Laundry
When to Use Hot Water for Laundry
There are still times when hot water is needed to give the cleaning and sanitation results you need.
- White cotton clothes (underwear) worn close to the body, bed and kitchen linens, bath towels, heavily soiled or sweaty garments, oily stains and sickbed linens
- Benefits: Cleans heavy soil and is best for oily stains, sanitizes linens infected with bacteria or fungus, kills insects
- Problems: Can fade colors, sets protein stains and shrinks some fabrics
When to Use Warm Water for Laundry
When to Use Cold Water for Laundry
- Dark and bright-colored clothes, delicate fabrics
- Benefits: Most energy-efficient and cost-saving water temperature, less likely to shrink items or fade them, acceptable water temperature for any washable fabric
- Problems: Less efficient for removing stains; will not sanitize clothes. For best results with cold water washing, pretreat stains before washing. Use a heavy-duty, enzyme-based liquid laundry detergent or one formulated for cold water. Allow heavier soiled items to presoak in the water/detergent solution to give the solution more time to break apart stains from fabrics.
What Are the Differences in Washer Water Temperatures?
In most clothes washers, the hot water setting is 130 degrees Fahrenheit (54.4 Celsius) or above. Check your washer manual and your home water heater settings for specifics. If you have a washer with a steam cycle, that will increase the temperature in each load.
The warm water setting is between 110 and 90 degrees Fahrenheit (43.3-32.2 degrees Celsius).
The cold water setting is between 80 and 60 degrees Fahrenheit (26.7-15 degrees Celsius). During the winter, outdoor temperatures can greatly affect cold water temperatures. If the cold water drawn into your washer is below 60 degrees Fahrenheit (15 Celsius), powdered detergents will have a difficult time dissolving leaving white residue streaks and clothes are unlikely to be cleaned very well.
Janeway, Kimberly. Don't Bother Using Hot Water to Wash Your Laundry. Consumer Reports.