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By NANCY SECR 1ST
VPI Extension Agent
The largest consumption of energy in home laundering is the heating of water. For this reason the recommendation is frequently made to wash all clothes in cold water to save energy. But before families change to cold water washing, they should consider the trade-offs to be able to balance energy savings with satisfactory cleaning.
The temperature for cold water can vary from season to season. When water temperature is below 60 degrees F., there is hardly any cleaning result, recardless of whether detergent has been added. Wash water should be a minimum of 80 degrees F.
Detergents clean better in hotter water. Water temperature also affects the solubility of detergents, especially those that are the granular non-phosphate carbonate type. However, some detergents are designed espeically for cold water washing; others for washing in cold, warm and hot wash water. When using lower wash temperatures, use a detergent suited to this temperature.
Hot water (140 degrees F.) is best for removing certain soils. Some types of soil such as oily or greasy soil and stains are very hard to remove in lower water temperatures. Hot water is generally most effective to remove oil from white cottons, diapers, heavily soiled or white man-made and permanent press fabrics and heavily soiled items of any color.
In the average home there is a 10 to 20 degree temperature loss in the hot water after it leaves the hot water heater. By setting the water heater back to 120 degrees F.. you forgoe the possibility of washing selected loads in hot water.
If cool water is used for heavily soiled clothes, you may need to pre-soak them and use extra detergent.
I have a packet of information from Potomac Edison on how to save energy and energy saving recipes. If you are interested in receiving it call the Extension * Office 675-3619 or write Rappahannock Extension Office, Box 98, Washington, Virginia 22747.
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