How often should HVAC systems typically undergo preventive maintenance?

Preventive maintenance for HVAC systems is typically recommended once a year. This annual maintenance is essential for ensuring the system operates efficiently, reliably, and safely. Regular maintenance allows technicians to identify and address potential issues before they develop into major problems, which can save homeowners and businesses from costly repairs and reduce the likelihood of unexpected breakdowns during extreme weather conditions.

Annual maintenance generally includes tasks such as cleaning or replacing filters, checking refrigerant levels, inspecting electrical components, and ensuring the proper functioning of thermostats and controls. This proactive approach helps maintain optimal performance, prolongs the lifespan of the HVAC equipment, and can even improve energy efficiency, resulting in lower utility bills.

While certain components, such as filters, may require more frequent checks or replacements—potentially every month—full system maintenance should be conducted on an annual basis to ensure comprehensive care. This timeline aligns with manufacturers' recommendations and industry best practices for maintaining HVAC systems.