6 Air Conditioner Maintenance Tasks That Are Not Up for Negotiation
Briefly

Air conditioner maintenance is essential for optimal performance during the summer heat. Regular actions like changing air filters every month can prevent airflow issues that lead to higher energy costs. Cleaning the coils of the AC unit once a year can also enhance efficiency; if filters are maintained regularly, coils can remain clean for many years. Additionally, ensuring air vents are unobstructed is vital for system longevity and function, as any blockage reduces airflow and strains the HVAC system.
Regularly changing the air filter is key to keeping your AC unit running efficiently. A plugged-up filter is going to limit airflow and make the machine work harder, so you're going to spend more money to cool your house.
The AC unit will also run more efficiently when the coils are clean. As long as you're changing your filter regularly, coils will typically stay clean for 10, 12, or even 14 years.
Reduced airflow wears out your HVAC system. To make sure it's working at optimal capacity, remove any objects that are blocking the air vents and returns throughout your home.
Read at SFGATE
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