Upgrade to a high-efficiency system
Swapping your old, inefficient air conditioning system for a high-efficiency one can cut electricity bills by up to one-third. Upgrading to a variable speed furnace with the D/C blower motor option, can save you up to 90% on power usage.
Adjust the temperature
Typically, adjusting temperatures 5–8 degrees (down in winter, up in summer) can help save energy if you're going to be away from home for several hours.
Have annual maintenance performed
Tuning up your cooling system each spring and your heating system each fall will help ensure each operates at peak efficiency and can help you identify and resolve any potential issues before a breakdown occurs.
Don't block vents in well-used rooms
Keep your supply and return air vents free of objects like blinds, carpets or furniture so your air conditioner can operate efficiently and there is even, cool air distribution.
Close vents in less-used rooms
By closing the vents, you won't be spending money heating or cooling rooms that are used less.
Run fan continuously
running your fan continuously circulates the air, allowing for more even temperature throughout the house and continuously filtering the air. It also draws cold air from basement to upstairs.
Install a programmable thermostat
A programmable thermostat enables you to control your home's temperature when you're away or asleep. For every 1° you lower your thermostat for seven hours per day, you can save approximately one percent on your heating bill.