1. Close the curtains.
Close your blinds or drapes in the daytime to keep out the heat. South and west-facing windows bear the brunt of the sun's heat, so investing in good drapes or shades and keeping them closed in the summer will reduce interior heat load and improve comfort.
2. Reduce humidity in your home.
High humidity makes the air feel hotter. A dehumidifier keeps your air conditioner from working so hard and helps lower energy costs.
3. Seal any leaks.
Applying caulking weather stripping and foam outlet sealers to ensure your home can adequately keep the warm air out and the cool air in.
4. Install a programmable thermostat.
These devices can automatically set temperature ranges for maximum comfort and energy efficiency. Keep temperatures higher when your family isn't home during the summer to lower cooling costs.
5.Change air filters regularly.
Clogged filters can raise energy costs due to inefficiency and will affect the lifespan of your unit. Check the filters once a month and replace dirty filters immediately. An easy way to remember is when you pay your electric bill, change the filter.