POOL AND SPA COVERS
A pool or spa cover is recommended for indoor pools for a few reasons: (1) To control the humidity (condensation) inside the enclosure when the pool is not in use. According to ASHRAE - room air temperature must be a minimum 2 degrees warmer that the water temperature to keep condensation controlled. (2) By covering the water you can lower the ambient room temperature during the colder nights or winter days and save on energy costs to heat the environment and water.
As far as pool operating costs, lets look at the facts:
- According to U.S. Department of Energy and supported by various other sources, a full 70 % of the energy used to heat a pool is lost by pool evaporation, whether the pool is indoors or outdoors. Outdoors, evaporation is accelerated by wind where a solid pool cover will greatly reduce it. Indoors, ventilation is critical by means of ceiling fans, hvac, and or dehumification, but with a pool cover the need to remove moisture and turn over the air is close to eliminated.
- According to the DOE's Reduce Swimming Pool Energy Costs campaign, "it only takes 1 Btu to raise 1 pound of water 1 degree, but each pound of 80-degree water that evaporates takes a whopping 1048 Btu's of heat out of the pool."
An automatic cover will also save on water chemical costs and provide safety as well. Below are some examples of pool and spa covers:
We recommend that all indoor swimming pools have either manual solar blankets or motorized pool covers.