Eight percent of American homes now have pools, which waste more energy than all the nation’s ENERGY STAR homes are saving!
Swimming pools are typically the first- or second-largest single energy user in homes that have them. California’s 1.35 million residential pools use the entire electrical output of a medium-sized power plant.
Energy Facts
- Evaporation is the biggest source of heat loss from hot tubs and pools. When only 5 gallons of water evaporate from a hot tub, the remaining 500 gallons chill by 1°F., then must be re-heated.
- American swimming pools contain enough water to cover the city of San Francisco with a layer of water about seven feet deep. About 30% of that water is heated, requiring as much natural gas as a city of 6 million normally uses.
- For every hour it’s in use, an average pool heater consumes three times as much energy as a home furnace.
- Pool blankets (insulating sheets that float on the water surface) reduce the energy consumption of pool heaters by 40%-70%.
- Pool pumps use about the same amount of energy in an hour as window unit air conditioners.
Simple Ways to Save Energy
- Cover your spa or hot tub. Use a well-insulated cover with an R-value rating of 12 and foam insulation that is at least 2 inches thick. It’ll prevent heat loss and evaporation.
- Cover your pool with a floating pool blanket whenever you’re not swimming.
- Install a highly efficient two-speed or variable speed pool pump and use the low speed as much as possible. This can cut your pool-pumping energy consumption, and the related costs, in half.
- Resist buying a pool pump bigger than you need; it will cost more to buy and operate than a properly sized one.
- Put a timer on your pool pump – most run longer than needed to keep pools clean.
Excerpted from 30 Simple Energy Things You Can Do To Save The Earth, by The EarthWorks Group.