Is it mandatory that machine will wash clothes in warm water?

 Is it mandatory that machine will wash clothes 

  in warm water?  

Is it mandatory that machine will wash clothes in warm water?




It is the fact that the laundry detergents dissolve very fast in warm water and it also reacts very fast with the stains to remove. Laundry washing machines come with inbuilt heaters, with the nob to switch on and switch of the heater. It is absolutely not mandatory to use warm water to wash clothes. Before coming to any conclusion let us find little science involved.




I remember when I was in a school and we had a washing machine with stainless steel tub. We used to put the tap water on it and get it filled to the desired marked water level. Then we used detergent and stirred the machine tub till the detergent gets dissolved and sufficient lather if formed. Then switch on the washer heater and load the clothes to soak for 10 minutes and then start the washing cycle.


In the old days we used to get the domestic washing machine with the tub manufactured out of steel for domestic use. As the competition increased, the manufacturers started manufacturing a tub made with tough fiber.




What Fibers used to make clothing: Synthetic and Natural


Synthetics are man-made polymers like polyester, rayon, Kevlar or acrylic. Fibers are strings made up of petroleum-based chemical chains. Synthetics made from petroleum products do not typically shrink in laundry because the washer and dryer do not get hot enough to mess with their structure.


Natural fibers, on the other hand, come from animals and plants. The fibers of cotton, wool or silk are naturally curly and tangled. So when threads made out of this are weaved into fabric, they are stretched and pulled to make them straight. Given an opportunity to come to their naturally curly form, they will.


Researchers have found that the structure of this fabric can affect shrinkage too. Denim jeans are tightly woven cotton. But sweaters are airy, so they can shrink by as much as up to 30% as per the researchers. Even the natural moisture content of the fibers themselves can affect shrinkage. So, over-drying can inevitably cause clothing to change shape.


Scientists have discovered that the heat and mechanical energies in laundry process allows them to do that and you find them shrink after drying.




Water plays a vital role in washing clothes in the washing machine. The detergents do not easily dissolve in hard water and if it is not dissolved properly, the residue of the detergent remains on the washed clothes which gives itching feel to the person wearing the cloth.


If the water is heated it becomes soft and the detergent gets easily dissolved in it. Heating the water enhances its dissolving action on the detergent. If you are getting a soft tap water, it is not necessary to heat the water for washing clothes.


Everyone does laundry differently, at different temperatures, different laundry times, different detergents. Hence, it is always recommended to check the laundry tag before laundry.




Benefits of using cold water in a laundry wash

1       Cold water wash is less likely to fade, shrink and develop fewer wrinkles.

2       Cold water wash is best for removing protein stains like food stains 

      which gets cooked in hot water and becomes stubborn.

3       Blood and Sweat stains are set on clothes if washed in hot water.

4      Delicate fabrics like silk, lac and dark colored fabric work best with 

     cold water.

5      Cold water wash reduces the gas and electricity bill as 70 to 90% of washing 

     bill is generated by using hot water.

6     Cotton and wool absorb a lot of water, which means more fiber contact 

     and shrinkage. So   wash cotton and wool in cold water.

7    Cold wash eliminates as much as 350 pounds of carbon dioxide emission


8      Blood and sweat stains set in hot water. Hot water tends to shrink, fade and 

     wrinkle  certain fabrics.


Benefits of using hot water in laundry wash

    1      Use of hot water is recommended for sanitization. If any member of a family is 

         sick, better use hot water to wash clothes and bed linen.

    2   In cold weather when the temperature drops below 40 degrees Fahrenheit

         detergent loses its property of removing stains, as it cannot chemically

         react with the  stains in very cold water.    

   3    Nylon and polyester absorb less water and are more heat resistant and can be 

    washed in hot water.  


        1.      Cold water detergents are formulated to work in cold temperatures.

       2.   Select the washing machine models with  lower water factor.  

            The lower the water factor, the more efficient the washing machine is. 

            Energy started labeling machines must have a water factor lower than 6 which 

             means almost 40% of energy is used  and less than 50% of water is.

       3.     While washing with hot water, micro fibers shed from the synthetic fabric

             into the  water polluting the disturbing the eco-system.