Which one of the following is NOT part of ductwork preventative maintenance?

The focus of ductwork preventative maintenance is to ensure the proper functioning and efficiency of the HVAC system. The correct answer highlights that ignoring insulation types does not align with these preventive measures.

Proper insulation helps maintain temperature control within the ductwork and minimizes energy loss. Recognizing the insulation type is crucial in determining its effectiveness and ensuring that it meets the necessary standards for energy efficiency. When insulation is neglected, it can lead to heat loss or gain, causing the system to work harder and increasing energy consumption.

In contrast, sealing gaps, conducting regular inspections, and cleaning ducts are all essential components of maintenance. Sealing gaps prevents air leaks that can reduce efficiency. Regular inspections help identify potential issues before they escalate and ensure optimal operation. Cleaning ducts removes debris and contaminants, improving indoor air quality and airflow, which are all vital to maintaining a healthy and efficient HVAC system.