Many people close some of their vents in ducted systems thinking this will save energy, but this actually uses more energy as the cool air dissipates in the hotter areas keeping the thermostat working longer.
If your ductwork is leaking or the insulation is missing you could be losing 20 to 40% of the energy sending your energy cost skyrocketing. Sealing the ducting with the proper insulating material is often not expensive.
Having the home properly insulated and all cracks and gaps eliminated is one of the best ways to reduce your energy costs. Old leaky windows and not having proper insulation in the walls and ceilings mean all that air you have cooled down is just going to leak away.
Allowing the hot sun to enter your rooms can heat them by 10 to 20 degrees, the less heat you allow inside the less you have to cool the home down. Consider using shade cloths over areas that get direct sunlight so you can still have the views without the sun’s heat. Always close the drapes or curtains at night this is a very effective way to keep in the cold air, as the heat can escape through the glass to the outside quickly.
Many home appliances such as ovens, grills, dishwashers, dryers, washing machines, refrigerators and lighting all produce a lot of heat contributing to the interior temperature of your home. Try and keep these devices well away from the different thermostats around the home or avoid using them when the air con is turned on.
Ceiling fans can help circulate the air and cool you down so can raise the thermostat setting and reduce cooling costs while still getting the right performance from your air conditioner.
Improving your air conditioner’s performance is critical if you want to keep your costs down. The best way to do this is to ensure the unit is clean, the filters are regularly washed and the insulation on all ducting is intact. Your home also needs to be properly insulated.