– Installing HVAC systems, including air conditioners, furnaces, and heat pumps, as well as associated ductwork and electrical components – Performing regular maintenance on HVAC systems to ensure optimal performance and longevity, including cleaning, checking refrigerant levels, and replacing filters – Diagnosing issues with HVAC systems and conducting repairs to restore functionality, such as fixing leaks or replacing malfunctioning parts – Testing HVAC systems after installation or repair to ensure they operate efficiently and meet safety standards

None specified.