Pool Cover Heats Water
![xpool-cover-heats-water-21540519.jpg.pagespeed.ic.asV7Os15Sa pool cover heats water](https://www.innovation-creativity.com/wp-content/uploads/2022/10/xpool-cover-heats-water-21540519.jpg.pagespeed.ic_.asV7Os15Sa.jpg)
September 1963…
This pool cover with air pockets might extend the swimming season far into the fall. One side of the plastic mattress would be covered with a dark film to absorb solar heat and transmit it to the water. The light-colored heat reflector on the reverse side would help cool the water in the summer.