HVAC maintenance 4

https://getheatingsystemserviceworld.brightsora.com/posts/why-routine-heating-system-service-saves-you-more-than-money

Every few months, I change the air filter in my HVAC unit—it's a simple step that keeps dust from building up and the system running efficiently. I also clear debris from the outdoor condenser and check the thermostat batteries. Scheduling a professional inspection once a year catches refrigerant leaks and electrical issues before they become expensive repairs.