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FABRICATION

Sheetmetal & Duct Fabrication

In-house Connecticut shop fabricating duct, weldments, and custom components for HVAC and process work.

Most of what goes in our trucks comes out of our shop. We fabricate ductwork, breeching, stacks, weldments, transitions, and custom components in galvanized, stainless, aluminum, black iron, and specialty alloys. Sized, sealed, and labeled to match BIM and the field plan.

Self-performing fabrication is what lets us hold tight schedules and respond to field changes without waiting on a third party.

Custom round & rectangular duct

Built to SMACNA standards for low, medium, and high-pressure systems.

Stainless & specialty alloys

Welded stainless, aluminum, and exotic metal duct for labs and process.

Weldments & transitions

Custom transitions, plenums, and fittings, fully welded to ASME where required.

Breeching & stacks

Boiler breeching, exhaust stacks, and chimney connectors per NFPA 211.

Process exhaust

Lab fume hood exhaust ducting and high-purity systems, tested and balanced by our TAB partners.

Shop drawings & BIM

We model and shop-draw to field-verify before any metal gets cut.

Collage of custom sheetmetal fittings fabricated in the ASM shop

Capabilities

  • Field measurement and shop drawings
  • Pre-install coordination with other trades
  • Delivery and installation by our in-house team

Applications we support

  • Commercial HVAC (offices, retail, mixed-use)
  • Labs and cleanrooms
  • Healthcare and hospitals
  • Industrial process and exhaust
  • Schools, universities, and municipal
  • Equipment ventilation, outside air, and supply air

Why in-house fabrication

  • Faster turnaround
  • Fewer coordination delays and misfits
  • Better integration with mechanical, electrical, and structural
  • Less risk of change orders and rework

Bring us in early.

The earlier we're on a project, the more we can value-engineer, prefabricate, and de-risk the install. Let's talk specs, timeline, and budget.

Related

From our shop

A sample of custom pieces built in our Middlefield, CT shop. Ductwork, transitions, weldments, hoods, and specialty parts for commercial and industrial jobs.

Custom square sheetmetal duct section
Welded round duct
Long welded round duct run
Rectangular duct transition
Custom duct transitions
Round transition cone
Unique custom transition fitting
Welded duct bend

PROOF OF WORK

Recent sheetmetal & duct projects

See all fabrication projects

Commercial

UConn Werth Residence Hall High Humidity Mitigation

Storrs, CTCommercial

Renovation addressing persistent humidity in an 8-story student dormitory. Demolition and replacement of ductwork, new rooftop ERVs and curbs, registers, and related sheet metal. Delivered reliable humidity control and improved system performance.

  • Commercial HVAC
  • Sheetmetal Fabrication
  • Mechanical Systems

Commercial

Three Rivers Community College Library HVAC & Sheet Metal Upgrades

Norwich, CTCommercial

New sheet metal and HVAC piping to support library renovations. Make-safe and removal of existing duct and piping; new galvanized duct, HVAC piping, VAV equipment, and RGDs; thermal insulation; TAB; controls integration. Davis-Bacon labor.

  • Commercial HVAC
  • Sheetmetal Fabrication
  • Mechanical Systems

Commercial

Conference Room HVAC Upgrades

Hartford, CTCommercial

New ductwork and air distribution for a renovated conference room. Make-safe and removal of existing duct and equipment; new galvanized duct, VAV terminal units, RGDs, RCP components, and full duct insulation; TAB and permitted mechanical install.

  • Commercial HVAC
  • Sheetmetal Fabrication
Call (860) 349-1644Request Estimate