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Cover Your Pool and Save Water, Energy
If you have a pool, then you know a pool cover is ideal. It keeps insects and leaves out of the water. The covers keep the punk kids out and the young kids safe. There are a variety of different pool covers, some merely a light layer of plastic, thin and chintzy. Some covers are remote-controlled. Some could support an elephant on top of them. If you live in windy areas or if you're pool is surrounded by trees, then a pool cover is a necessity.
Lucky for you, your necessity is environmentally savvy. (You're also lucky because you have a pool.) People with pools always have the most friends. Do they like you for you, or your pool? Who cares? Cannonball!
Pool covers save water. If you heat your pool, the cover will save you money. There is no point to letting all that water and money go up in steam when you could just trap that moisture with a pool cover.
Even indoor pools, not usually subjected to weather, benefit tremendously from pool covers. Rooms with indoor pools will need to be properly air-conditioned because of humidity. A cover can be used to lower energy costs. A pool cover can save anywhere from 50% to 70% on pool-related energy costs.
The benefits continue. The amount of refill water that a pool cover will save you is 30-50%. Conserving water is a good thing. A pool cover will help reduce your pool's chemical consumption by 35-60%. This also reduces maintenance time by keeping leaves and other debris out of the pool.
Source: EERE