Air Duct Repair in Somerville, NJ

The crew checks airflow at each register, then follows every run that can be reached: the basement trunk and its takeoffs, the attic or crawl space runs, the boots behind the registers, and the return path back to the air handler. A supply that blows hard in the basement but barely moves air in a bedroom points to a gap or a crush somewhere between the two. So does a return that pulls weakly while the blower runs hard, or a whistle near a joint.

Joints and seams are sealed with mastic or with foil-backed tape made for ductwork, never cloth duct tape, which dries out and lets go within a few seasons. A takeoff that pulled off the trunk is refastened and sealed, a boot that separated from its floor or ceiling opening is reset, and a collar where flex meets metal gets a proper clamp before it is sealed. You see what was open before it is closed up.

Any duct that held floodwater moves from repair to replacement. The EPA's guidance on duct cleaning is direct about insulated duct: once the insulation is wet or moldy, cleaning will not fix it, and it should be taken out and replaced. In a Manville or Somerville basement that means soaked flex runs and duct board come out, metal trunks are checked for rust and silt, and new sections go in sealed at every joint.

The equipment is part of the same question. A furnace or air handler replaced after a flood is often reconnected to the old ductwork, and a coil or drain pan that stayed wet can grow what the blower then spreads. If growth turns up on the coil, in the pan or on duct surfaces, mold treatment and removal handles it as a separate step. New runs in a basement that has flooded are hung as high in the joists as the layout allows.

Flex duct in an attic needs support every few feet. When straps fail or were spaced too far apart, the duct sags into a belly that chokes the airflow and gathers condensation in summer. A run flattened during other work can stay pinched for years before anyone traces the cold room to it. The crew replaces flattened sections, pulls sagging runs straight with new strapping, and restores torn insulation jackets so the duct does not sweat onto the ceiling below.

Crawl spaces bring the same trouble closer to the ground. An addition on an older house in Somerville or Raritan may sit over a crawl space where the runs rest on the soil or hang from straps that gave out, and duct lying on damp ground rusts or soaks its insulation. Those runs are lifted, strapped to the joists and resealed, and any section that rusted through or held water is replaced.

Franklin's townhouses put the attic version of the problem in a smaller space, with the air handler in a closet or the attic and the supply runs over the bedroom ceilings. When one bedroom in a unit like that runs colder than the others, the run feeding it is usually loose or crushed above the ceiling. The repair is done from the attic hatch, with drop cloths on the floor below.

Repair makes sense when the damage is limited to a few joints or sections and the rest of the system is sound. It stops making sense when most runs leak, when flood-soaked duct fills the basement, or when an addition has outgrown what the old system can carry. In those cases the crew says so and lays out what air duct installation would take, so you are not paying to patch one run after another.

The estimate is free and follows an inspection of the runs in the basement, attic and crawl space. The Somerville line is answered 8 AM to 8 PM, 7 days a week, and the work is done by AMG, which is licensed and insured, veteran owned, and on the state's contractor register as NJ HIC 13VH13654300. A repair ends with airflow checked in the rooms that were short, and an air duct cleaning afterward clears the dust and insulation fibers pulled in while the joints were open.