Clean the area surrounding the external condenser unit. Your outdoor unit will perform best if it is clean and free of dirt.
Vacuum indoor vents and keep them clear. To maintain consistent airflow from your system, clean dust and debris away from indoor supply vents. Also, keep objects such as blinds, furniture and toys away from the vents.
Increase the temperature of your thermostat by a few degrees. Temperature adjustments of 5 – 8 degrees (down in winter, up in summer) may often help save money and energy.
Lamps and other heat-producing items should be kept away from your thermostat. Keeping heat-producing appliances close to your thermostat will alert it that the air in your house requires more cooling, leading the system to run longer and work harder.