Add insulation to your ceiling and walls and get a rebate.
Upgrade your furnace to a more efficient one and get a rebate.
When buying new electronic equipment, make sure it is ENERGY STAR certified.
Keep all windows and doors shut while the air conditioner is on.
Close window shades, curtains, and blinds on windows that get a lot of afternoon sun during the summer. Keep them open in the afternoons during the winter.
Have your air conditioner and heater serviced (at least once every 2-3 years) to maintain efficient operation.
Cover your pool. A proper pool cover can cut heat loss by 50 to 75% and can also reduce water loss by up to 90%.
Turn off your pool heater, if you have one.
Reduce filtration time to six hours per day. You can save 50% or more of the energy used for filtration.
Heat pool only when you use it. If you only use your pool on weekends or special occasions, turn off the heater or lower the thermostat setting to 68 degrees during the week. You can turn on your heater the night before, or the morning of the day you plan to swim.
Re-evaluate the frequency of backwashing. Most people backwash more than needed. Some pool filters do not have to be backwashed; they can be taken apart and cleaned.
Be sure to follow the pool manufacturer's instructions.
Protect the pool surface from wind without blocking sunlight by using fences, cabanas, and, planting trees. The difference between a fully sheltered pool and one exposed to a mild breeze of 7 miles per hour can be 400% higher energy use!
Have your pool heater inspected annually; a properly maintained heater will use energy efficiently.