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Duct sealing in Santa Teresa
Larger plans with long supply runs and hot attic air.
Longer branches lose more air at the far boots. Sealing before an equipment replacement keeps the new system sized to the house.
The visit is the same across San Jose: leakage test, internal seal if the ducts are intact, and a written before-and-after. You do not need to empty the attic or open ceilings.