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Q: We just bought a house with a pool. Because we're first-time pool owners, I didn't pay much attention to a column you ran about lowering operating costs for pool pumps. I'm hoping you'll run the advice again. (Posted July 3, 2008)

A: I'm happy to. The simplest thing you can do is to run the pump only as long as is needed. To determine that timing, you'll need to experiment. Start by running the pump for eight hours per day. If the pool stays clear, run the pump less often.

If it starts to get cloudy, run it a bit more each day until it clears. You may find that different run times are required at different times of the year. Use a timer that is rated for the size pump you have.

Another way you can save on running costs is to match the size of the pump to the needs of your pool. When it comes time to replace the pump or the pump motor, get only the horsepower you need and look for a two-speed or variable-speed pump motor. A pool supplier can help you match the pump to the piping and pool that you have. If you end up downsizing the pump, talk to your supplier about using a larger filter and piping to reduce the water-flow resistance in the system. For the most efficient operation, keep intakes and drains clean, and backwash regularly. 

Rachael is a business development specialist at Efficiency Vermont. To find more energy saving tips or to submit a new question about energy use in your home or business, visit  www.efficiencyvermont.com/askrachael  or call, toll-free: 888-921-5990 to speak with a customer service representative.