When should an HVAC technician perform a smoke test?

Performing a smoke test is a specific diagnostic procedure used to identify leaks in the duct system. The smoke produced during the test acts as a visual indicator. When introduced into the ductwork, it reveals any areas where air escapes or enters improperly, which may compromise the efficiency of the HVAC system. This is particularly important because leaks can lead to energy waste, inconsistencies in temperature, and increased operational costs.

During this test, the technician can observe the flow of smoke and quickly locate any breaches in the ductwork, allowing for timely repairs. This proactive approach helps ensure that the HVAC system operates effectively and efficiently by maintaining proper air distribution throughout the space.

While checking for proper airflow and issues during refrigerant charging are important tasks for an HVAC technician, they do not specifically relate to the purpose of a smoke test. The end of the seasons, like winter, may warrant other inspections or maintenance, but this does not align with the specific function of identifying leaks in ducts.