The answer to 'when to service installation' is that HVAC systems should be serviced at least once a year, typically in the spring or fall before the peak heating or cooling season. Regular maintenance helps ensure your system is running efficiently, extends its lifespan, and prevents costly breakdowns.
During a service visit, an HVAC technician will inspect and clean the system, check for any issues, and make any necessary adjustments or minor repairs. They may also recommend replacing air filters, which should be done every 1-3 months depending on usage and indoor air quality. Professional maintenance is important, but there are also some simple DIY tasks homeowners can do in between visits.