Dirt streaks around supply diffusers that are NOT caused by a dirty ventilation system are MOST likely caused by:
Dirt streaks around supply diffusers that are NOT caused by a dirty ventilation system are MOST likely caused by:
Dirt streaks around supply diffusers that are not caused by a dirty ventilation system are most likely caused by dirty room air at the diffuser. When the room air contains dust and other particles, these can accumulate around the diffuser as the air is discharged, leading to visible streaks.
If a client ask what’s the reason why the room air in the room is dirty, what would be the best answer to them?
The room itself can be dusty they could possibly need a new filter. There could be insulation that’s damaged inside of the system, or with dust along with humidity. It’ll create streaks around the diffuser.
the respose is d
agree with C, found the answer in the HVAC Inspection Manual, 2016
the right awser on the nadca test