Over 98% of water evaporation is prevented when a swimming pool solar cover is in place. Solar pool covers also block the effects that wind has on accelerating evaporation. A 7 mile per hour wind will increase water evaporation by 300%.
Annual evaporation across the U.S. can vary between 3 feet and 6-1/2 feet of water loss per pool pending location. In an average sized pool measuring 14 feet x 26 feet this loss would translate to between 8,168 and 17,698 gallons of water lost per year. Higher temperature areas and areas subjected to wind will experience the higher evaporation loss rates. For an average water consumption household of 400 gallon per day, this adds close to the equivalent of three fourths to one and one half water bills per year all due to evaporation. Over the lifetime of the cover, the water savings can be between 49,000 to 98,000 gallons and the equivalence of 4 to 8 water bills.
According the United States Department of Energy Americans spend $2.5 billion per year heating private pools. The D.O.E. also reports that a swimming pool cover can reduce energy consumption by over 50%.
During the day, a Standard Blue GeoBubble™ cover increases the water temperature by up to 7.2°F (4°C). Swimming pool solar covers also serve to retain heat at night by acting as an insulator. The insulating property prevents the cooler night air from making direct contact with the water dropping its temperature.
The combined advantages of daytime heat generation and nigh-time heat retention dramatically reduce a swimming pool’s energy consumption. Evaporation of water is by far the greatest source of heat loss for swimming pools, accounting for up to 70% of the heat lost according to the D.O.E. and independent university studies.
Solar pool covers will reduce chemical consumption by up to 50%. This is due to two key factors:
1.) Leaves and other debris collect on the covers, not in the pool water where they can feed algae and micro-organisms. Elimination of the debris in the water allows for lower chemical input.
2.) As pool water evaporates, treatment chemicals go with it and typically at an accelerated rate over water vapor alone. Stopping evaporation with a pool cover ensures that the chemicals will work more effectively and input can be reduced without impacting water hygiene. A cover also makes maintaining balanced pH levels easier. Learn more about Pool Chemistry.
Research shows that by using a swimming solar cover on an average sized UK pool (14 foot x 26 foot), up to 50% less chemicals are required. This equates to approx. 17.6 lbs. of chlorine. The U.S. D.O.E. has reached similar conclusions