There are many reasons to adjust the washing machine temperature, including clothing materials and stain treatment. For most clothing, the hotter the water, the cleaner the clothing will be. However, it might be necessary to use other water temperatures in certain cases.
Here's a washing machine temperature guide based on fabric types.
When to Use Hot Water
Most linens and white clothing can be washed in hot water. The high temperature is effective at removing dirt and contamination from fabric. However, hot water tends to make some fabrics shrink, wrinkle, and fade. Dyed fabric might turn out splotchy after using hot water. And delicate fabrics don't usually respond well to high temperatures. So be sure to check label recommendations.
When to Use Warm Water
Most types of fabric can be washed with warm water. Warm water is a mix of hot and cold. Some machines mix the hot and cold water 50-50, though many newer machines mix it 60-40. Warm water is usually the best choice for permanent press materials and jeans. It allows good cleaning action without as much fading, wrinkling, and shrinking.
When to Use Cold Water
Cold water is usually used for delicate fabrics or items with instructions to be washed in cold water. It's the best option for clothing that has bright colors that can run or fade at higher temperatures. But if your cold water items are heavily soiled, you'll need to be diligent about pretreating for stains. They also might require a longer wash time or a presoak before washing to fully remove stains.
4 Tips for Washing Clothes
Check the Tag
Most items have a tag with specific washing instructions. These directions are recommended not only to best clean the fabric but also to maintain its longevity. So always be aware of what the tag says, and group laundry loads according to their washing instructions.
Check the Washer's Water Temperature
Checking the water temperature of your washing machine will give you a good baseline on how well it is functioning and whether the temperature dials are accurate. To do this, run the cold, warm, and hot water settings in turn, and use a candy thermometer to record the temperature of each.
- Hot water is generally 130 degrees Fahrenheit (54 degrees Celsius) or above.
- Warm water is generally between 90 and 110 degrees Fahrenheit (32 to 43 degrees Celsius).
- Cold water is generally between 60 and 80 degrees Fahrenheit (16 to 27 degrees Celsius).
If the cold water is below roughly 60 degrees Fahrenheit (16 degrees Celsius), clothes are unlikely to be cleaned well.
Treat Stains Prior to Washing
Pretreating stains helps to prevent the stains from setting into the fabric before you wash it. Taking the time to pretreat gives the fabric a better chance of coming out clean after the wash. But before you engage in any stain removal, make sure the product you're using is appropriate for your fabric type. It's a good idea to spot test the product in an inconspicuous spot before applying it to the stain.
Use a Cold Water Soak
Although washing with cold water isn't always the best for getting out stains, a cold water soak can be a lifesaver for certain types of fabrics that have a stain on them. Be patient. A soak can be anywhere from a few minutes to overnight. The tougher the stain, the longer the soak will need to be.