Duct Pipe

Duct pipe is the backbone of efficient air distribution in heating and cooling systems, moving conditioned air quietly and with minimal loss. This category includes round and oval rigid duct in galvanized steel, aluminum, and stainless, plus double‑wall and insulated options that cut heat gain, condensation, and noise.

Choose diameter and material to match your target CFM and static pressure. Round spiral duct offers low resistance and strong seams for long, straight runs; snap‑lock and crimped-end sections make quick work of standard installations. Pair pipe with elbows, reducers, wyes, take‑offs, collars, and balancing dampers to build airtight supply and return trunks.

Benefits you’ll notice:
- Better comfort: consistent temperatures room to room.
- Higher system efficiency: less leakage and pressure drop.
- Quieter operation: insulated or lined duct reduces breakout noise.
- Cleaner air: smooth interiors resist dust buildup and are easier to service.

Actionable buying tips:
- Size duct with a recognized method (Manual D or SMACNA tables) to protect airflow and equipment.
- Minimize bends; use long‑radius elbows where turns are unavoidable.
- Seal every joint with mastic or UL‑listed foil tape and mechanically fasten per code.
- Insulate runs outside the thermal envelope; match local R‑value requirements and add a vapor barrier in humid climates.
- Support horizontal runs every 6–10 feet and maintain clearances from heat sources.

Typical uses include furnace supply trunks, AC return drops, bathroom and kitchen ventilation, workshop dust collection, and make‑up air. Many products meet IMC and SMACNA standards and are compatible with common HVAC fittings and boots, making retrofits straightforward.

Search terms to help you find what you need: HVAC duct pipe, round duct, spiral duct, galvanized duct, insulated duct, ventilation pipe, return air duct, supply air duct, duct fittings, duct installation, duct sealing, duct sizing. Static pressure and airflow balance.