How should water be managed when using a blower or vacuum during duct work?

When managing water when using a blower or vacuum during duct work, opting for the method that emphasizes expelling water, as indicated by the chosen response, is important for maintaining the integrity of the duct system. Using a blower to move air—along with any moisture—out of the ducts helps to prevent water from accumulating inside and potentially causing damage or fostering mold growth. This method also ensures that any debris or contaminants are effectively cleared out rather than trapped inside the ductwork.

The other options suggest methods that involve retaining or filtering water, which would not be practical in this scenario. Diverting water to another area could lead to accumulation elsewhere and might not solve the problem of moisture in the ducts. Evaporating with heat is also impractical, as it necessitates considerable energy input and could complicate the air quality within the duct system. Lastly, filtering out water before it enters the duct could result in clogged filters and does not address the immediate need for moisture removal during the duct work process. Thus, the emphasis on expelling water directly is the most effective approach.