Ductwork: how the residential ductwork works in Sandy Springs homes

Ductwork is the network of sheet-metal and insulated flex ducts that carries air between the air handler and every room. Leaky, crushed or dirty ducts waste energy and leave rooms uncomfortable no matter how good the equipment is.

How it works

Most Atlanta-area homes use a mix of rigid sheet-metal trunks and insulated flexible duct to each room. Flex duct is a wire coil inside a plastic liner, wrapped in insulation and an outer vapor jacket — the kind shown in the photo.

Flex duct works well when it's pulled tight and supported every few feet. When it sags, kinks or makes sharp turns, airflow drops sharply. A single crushed run in an attic can starve a whole bedroom.

Leaks at joints and boots pull hot, dusty attic or crawlspace air into the system. Sealing with mastic, not cloth tape, and keeping insulation intact are the fixes that last.

Signs of a problem

Rooms far from the unit never cool
Dusty house even with good filters
Torn insulation or loose duct in the attic
Whistling from the ceiling
Higher-than-expected energy bills

Simple upkeep

Look at visible ducts in the attic once a year
Keep storage boxes off flex duct runs
Seal joints with mastic or foil tape, not cloth duct tape
Consider cleaning after renovation, pests or water damage

The ductwork in Sandy Springs homes

Attic air handlers here can sit in 120°F+ attics in July, which is hard on blowers, drain lines and duct insulation. In Sandy Springs's mix of 1960s–1980s split-levels off Roswell Road, larger custom homes near Riverside Drive and many attic-mounted systems, we see ductwork issues most often in homes around Riverside, North Springs, Dunwoody Panhandle.

What our technicians check: We inspect duct runs, measure airflow per room and test for leakage. Our crews clean, seal and replace residential and commercial ductwork with HEPA-filtered equipment following NADCA ACR methods.