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Cold-water washing
Temperature of the water you use to wash your clothes can save you a lot of dollars on your energy bill. Washing temperatures can range from as low as 16oC to 95oC.
Washing your clothes using cold water is desirable for four reasons:
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You save on energy as most energy cost in washing goes to heating of the water
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You save the environment as you help to reduce greenhouse gas emission
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Hot water washing causes shrinking and colour fading of clothes and this can be prevented when you cold-wash your clothes.
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Cold water washing can reduce wrinkles, which saves energy costs (and time) associated with ironing.
Modern detergents clean just as well in cold water as they do in warmer water. These detergents are now equipped with enzymes that start to function well at temperatures as low as 16℃. Furthermore, most modern washers are equipped to handle washing in cold or warm water.
However, it should be noted that some washing can just be done ONLY with warmer water. The type of stain on your clothes will determine if you can or cannot use cold water. Also most clothe manufacturers attach a label. The label will show a laundry symbol that looks like a square tub with a wavy line to represent water. Inside the symbol you will see either a number or dots. A number stands for the highest temperature of the water you should use for washing while the dots are interpreted as follows:
- One dot stands for 30℃ or 90℉
- Two for 40℃ or 105℉
- Three for 50℃ or 120℉
- Four for 60℃ or 140℉
- Five for 70℃ or 160℉
- Six for 95℃ or 200℉
Generally the decision on whether or not to use cold water will need to be based on the type of stain (s) on your clothes and the temperature suggestion on the label that is attached to your clothes by the clothes' manufacturer. Other considerations include: delicate fabrics (lace and silk) and dark, colorful fabrics are better washed with cold water. Knits and synthetic fabrics (such as spandex, nylon, polyester, and rayon blends) are easier to wash in warmer water
Most manufacturers of modern washing machines provide guides on how you can decide on whether to use cold water or warm water to wash your clothes. Some examples of the cold water washing by the appliances' manufacturer are:
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