Many people don’t realize this, but maintaining your air conditioning system is important to help avoid costly repairs or breakdowns at times when it matters the most, like when the temperature is in triple digits outside. Dirt and neglect are the top causes of heating and cooling system inefficiency and failure. That’s according to Energy Star, a U.S. Environmental Protection Agency voluntary program that helps businesses and individuals save money and improve energy efficiency. To ensure efficient system operation, it’s important to perform routine maintenance beyond simply changing the filter every month.
You can do this by calling in a licensed contractor to do annual pre-season check-ups. Ask neighbors, friends, and family for HVAC contractor recommendations. Check the status of the contractor’s license with the Contractors State License Board (CSLB) before you hire at www.cslb.ca.gov. Contractors get busy once summer comes, so it’s best to check the cooling system in the spring. Energy Star recommends the following typical maintenance efforts:
- Check thermostat settings to ensure the cooling system keeps you comfortable when you are home and saves energy while you are away.
- Tighten all electrical connections and measure voltage and current on motors. Faulty electrical connections can cause unsafe operation of your system and reduce the life of major components.
- Lubricate all moving parts. Parts that lack lubrication cause friction in motors and increase the amount of electricity you use.
- Check and inspect the condensate drain in your central air conditioner, furnace and/or heat pump (when in cooling mode). A plugged drain can cause water damage in the house and affect indoor humidity levels. If plugged, the drain can cause water damage in the house, affect indoor humidity levels, and breed bacteria and mold.
- Check controls of the system to ensure proper and safe operation. Check the starting cycle of the equipment to ensure the system starts, operates, and shuts off properly.
- Clean evaporator and condenser air conditioning coils. Dirty coils reduce the system’s ability to cool your home and cause the system to run longer, increasing energy costs and reducing the life of the equipment.
- Check your central air conditioner’s refrigerant level and adjust if necessary. Too much or too little refrigerant will make your system less efficient, increasing energy costs and reducing the life of the equipment.
- Clean and adjust blower components to provide proper system airflow for greater comfort levels. Airflow problems can reduce your system’s efficiency by up to 15 percent.
And remember—don’t be pressured into buying a new system, especially if it’s unnecessary. CSLB has issued warnings about upselling scams. Before replacing your system, read CSLB’s guidelines. For more tips on how to heat and cool efficiently, visit https://www.energystar.gov/index.cfm?c=heat_cool.pr_hvac.