This film is placed directly on the surface of the water, under the edges of the pool. In this way, the water temperature can rise by no more than 1°C, depending on the strength of the sun's rays.
The film has PE bubbles all over the surface, so the heat is retained more. It is the least expensive way to heat your pool. At the same time, the foil also reduces chemical consumption, as well as water evaporation.
It can also be modified to fit smaller pools. As it is lightweight, mounting and handling is not difficult.
