The answer to 'how long does preventive maintenance last' is that the duration of preventive HVAC maintenance can vary, but it is generally recommended to have your system serviced at least once a year. Regular maintenance by a qualified HVAC technician can help extend the lifespan of your equipment and ensure it operates efficiently.
Preventive maintenance typically includes tasks like cleaning or replacing air filters, checking refrigerant levels, inspecting electrical connections, and testing safety controls. The specific maintenance needs may depend on factors like the age and condition of your HVAC system, as well as how often you use it. Following the manufacturer's recommended maintenance schedule is the best way to keep your system running smoothly and prevent costly breakdowns.