Dust and debris buildup in original sheet metal duct
Why it happens here
Homes built before 1950 have sheet metal duct with riveted joints that collect dust for decades. The narrow streets and older infrastructure mean many of these homes have never had professional duct cleaning. Debris builds up until airflow is restricted.
Our approach
We use low-RPM rotary brush systems and negative air machines to remove debris without damaging the duct. A duct inspection camera lets us verify the cleaning before we finish. We reseal any joints that show wear.