After a remodel: why your ducts are full of drywall dust
Contractors rarely seal the registers. The furnace ran anyway. Here is what to do.
Drywall sanding produces the finest dust in construction, and it goes everywhere the air goes. During a remodel the furnace is usually still running, the registers are usually not sealed, and the return pulls the dust into the system. Months after the project is done, every time the heat kicks on a puff of white dust comes out of the supply vents.
This is the single most common reason people call us for duct cleaning, and it is the case where the difference before and after is most dramatic. A camera in the trunk line after a kitchen remodel typically shows a layer of white dust an eighth of an inch thick.
What to do during the remodel
Ask the contractor to seal every register in the work area with plastic and tape, and to tape a filter over the return. Change the furnace filter weekly during heavy sanding. If the furnace can be shut off during the dustiest days, do it.
After
A full negative-air duct cleaning including the blower and coil, then a new filter. Do it after the final cleanup, not before, so construction dust from the last week is included.
Need it handled?
Negative-air duct cleaning of the whole system, trunk lines included, with the furnace blower and coil cleaned too. Air Duct Cleaning · (206) 434-0779
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