Family-owned, based in Grafton — serving all of MA Licensed & fully insured Free written estimates
Mon–Sat 7am–6pm · 508.816.5036
508.816.5036 Call Nestor
Residential & Commercial HVAC Installation

The HVAC crew
your neighborsalready call.

We install, repair, and maintain systems for commercial and residential — for the ranch on Elm Street and the 40,000 sq ft warehouse off Route 20 alike.

Call Nestor & Discuss Your Project Now Request an estimate
Serving Massachusetts statewide — Berkshires to Boston. Based in Grafton.
The Extreme Duct Works work van on a job
Licensed, insured & OSHA-trained
Homes & buildings, same crew
Real answers, same day
Install, repair & maintenance
Start Here

Which one are you?

Same crew, same standards — two very different jobs. Pick your side and we'll take it from there.

For your home

New construction, additions, gut renos, and the 1950s system that never did heat the back bedroom right.

  • Full system installation — design, fabrication & install
  • Repair — diagnostics on ductwork, airflow & venting
  • Maintenance — seasonal checks to keep it running right
Call Nestor about my home

For your building

GCs, property managers, and owners who need spiral hung straight, on schedule, and inspection-ready.

  • Full system installation — fabrication, fit-outs & changeouts
  • Repair — service calls on duct, exhaust & rooftop units
  • Maintenance — scheduled service that keeps tenants comfortable
Call Nestor about a bid
What We Do

Install.
Repair.
Maintain.

Three things, done properly, on both sides of the business. Whatever shape your job is in when you call, we can take it from there.

Evaporator coil opened up for service
Evaporator coil opened up on a service call
Residential & Commercial

Full System Installation

Load calc, duct design, in-house fabrication, and install — start to finish on one contract.

Residential & Commercial

Repair & Diagnostics

Weak airflow, hot and cold rooms, leaking seams, failed exhaust. We find it before we quote it.

Residential & Commercial

Preventive Maintenance

Seasonal service that catches the small problems while they're still small.

Residential

Retrofit & Additions

Getting supply and return into a house that was never built for it. Our favorite puzzle.

Commercial

Spiral & Exposed Duct

Clean-lined spiral for open ceilings where the ductwork is part of the design.

Commercial

RTU & Exhaust Work

Curb adapters, changeouts, kitchen exhaust, and make-up air — coordinated around your tenants.

Our Story

Meet Nestor Morales

Nestor has been working on HVAC systems for more than twenty years. Originally from Puerto Rico, he's built his life and his business here in Grafton, Massachusetts — and he still walks the jobs himself.

That's the whole idea behind Extreme Duct Works. The person who looks at your system is the person who explains what it needs, and the person you call when you have a question afterward. No handoffs, no call center.

20+
Years working on HVAC systems
Grafton
Home base — serving all of Massachusetts
Nestor Morales, owner of Extreme Duct Works, standing by the work van
Nestor Morales · Owner
Service Area

All of Massachusetts

Based in Grafton, in the middle of the state — which means most of Massachusetts is a short run for us. Residential and commercial, statewide.

Grafton & Central MA — home base Greater BostonMetroWestNorth Shore South ShoreMerrimack ValleySoutheastern MA Western MAThe Berkshires
GraftonHOME BASE

Get a real person, right now

No forms, no queue, no "someone will reach out." Call and talk to the people who'll do the work.

508.816.5036
Call Nestor & Discuss Your Project Now Or email us plans
Call Nestor — 508.816.5036