The answer to 'when to replace inspection' is that HVAC system inspections should be performed annually, typically in the spring or fall before the peak heating or cooling seasons. Regular inspections help ensure your system is running efficiently and identify any potential issues before they become major problems.
During an inspection, an HVAC technician will thoroughly check the key components of your system, including the air filters, thermostat, refrigerant levels, and electrical connections. They'll also clean and tune up the system to optimize its performance. Replacing the inspection at the recommended intervals is important to catch small problems early and extend the lifespan of your HVAC equipment.