Causes of High Summer Utility Bills
- The customer has a swimming pool and the pool pump runs 24 hours a day. The high cost of pool pumping is a surprise. Most residential pool pumps are 3/4 horsepower output. Operated all day every summer day, the monthly energy cost is about $66; operated continuously year around, the annual energy cost is about $793. A timer for the pool pump is well worth the installed cost and usually pays for itself through energy cost savings within a few months.
The National Spa and Pool Institute recommends that the pool be "turned over" (one complete circulation of water) once a day. Full turnover of a typical 20,000 gallon pool, requires four hours pumping at 85 gallons per minute, six hours at 55 gallons per minute or eight hours at 40 gallons per minute. Most pool pump systems are sized to accomplish a full turnover in four to six hours. Pumping year around for six hours a day instead of 24 hours a day saves about $595 a year!