Service 03 of 06
New runs, sized for the room.
We size the run to the room it serves, support it so it never sags onto a joist, and seal every joint before the insulation goes on — because a new duct installed badly performs like an old one.
In short
AMG installs and replaces ductwork for homes and businesses across New Jersey — new runs for an addition or a finished basement, replacement of systems that are past sealing, and reworking of branches that were undersized when the house was built. The work that decides the result happens before anything is hung: the run is sized to the room it serves, the path is planned for the shortest sensible route with the fewest sharp turns, and support is set so nothing ends up resting on a joist. Joints are sealed with mastic and mechanical fasteners before insulation goes on, because a seam you cannot reach later is a seam that has to be right now. Where flex is appropriate we use it properly stretched and supported; where rigid belongs, it goes in rigid. Free estimate, quoted before work starts.
Updated
What you get
The most common defect we find in existing NJ ductwork is a branch that was never big enough for the room at the end of it. A new run gets sized to what the space actually needs, which is why the addition ends up as comfortable as the rest of the house.
Every joint is sealed and fastened before insulation or drywall closes it in. A seam that will be unreachable in a week is the one that has to be right today, and we photograph it that way.
Flex sagging between joists is a permanent airflow tax. Runs are strapped at proper intervals and stretched, not draped, so the duct still performs the way it measured on day one.
The same people who clean and repair ductwork install it, so the install is done by someone who has spent years seeing how installs fail. That is a narrower kind of experience than a general contractor brings, and on ductwork it is the useful kind.
When to call
Step by step
We size the run to the room it will serve and check what the existing system can carry before proposing anything.
Shortest sensible path, fewest sharp turns, and a path that keeps the run out of spaces that will crush or cook it.
Hangers and straps go in at proper intervals so nothing rests on a joist or sags between them once the run is loaded.
Rigid where rigid belongs, flex properly stretched where it does not. Connections are mechanically fastened, not just pushed together.
Mastic on the seams and the boots while they can still be reached, and photographed before insulation goes on.
We check delivery at the new registers against the rest of the system and show you the photo set of what is now behind the drywall.
The argument about flex versus rigid duct is usually framed as a quality question, and it is really a placement question. Rigid metal holds its shape, keeps its cross-section under load and belongs on trunk lines and anywhere the run will be walked on, stored around or exposed. Flex is quiet, cheap to route around obstacles, and perfectly good on short final connections to a boot — provided it is pulled taut, supported at close intervals and not bent tighter than its own radius allows. Nearly every flex failure we cut out started as an installation shortcut: a run left slack because slack is faster than cutting to length, or a ninety-degree turn made by folding the duct instead of using a fitting. Installed correctly, flex on a short branch is not a compromise. Installed loose across an attic, it costs you airflow for the life of the house.
The most frequent mistake we are called in to fix after somebody else's addition is a supply register with no return path. Air has to leave the room as fast as it enters, and if the only way out is the gap under a closed door, the room pressurises, the supply slows down and the space never reaches temperature no matter how big the branch is. That is why the plan for a new run includes where the air goes afterwards — a return in the room, a transfer grille, or a jumper duct into the hallway. It is a smaller piece of work than the supply side and it is the one that decides whether the addition feels like part of the house.
Before you book
Sound rigid trunk that leaks at the seams is repair work. Flex that has been crushed for years, metal with corrosion through the joint, or branches that were undersized from the start are replacement work — sealing those just moves the problem a few feet. We photograph the run and show you which one you have.
Yes, and the first question is always whether the existing system has the capacity to feed it. If it does, we size and route the new run and add the return path the room needs. If it does not, we tell you that before you spend money on ductwork that will underperform from day one.
A single branch for one room is usually a day. A full replacement across a house runs several, depending on access and whether ceilings have to be opened. We give you the expected window when we quote, and we tell you which days are noisy and which days need the space clear.
Yes, and it is common — we are frequently the duct crew on somebody else's project. Tell us who is doing the equipment and when the drywall is going up, and we will sequence around it so nothing gets closed in before the joints are sealed and photographed.
Tell us what the equipment is when you call and we will say plainly whether it is work we take on. We would rather turn down a job than learn a system on your house, which is the same reason we photograph everything we do install.
Also on the same system
Leaks, disconnects and crushed runs in the system you already have.
See the work
The whole system — returns, plenums, trunk lines, branches and every register.
See the work
A new line — routed short, built rigid, terminated where it belongs.
See the workOpen 24 hours, by appointment. Tell us the system, the symptom and the town.
(877) 824-9359What people say
5.0
396 reviews on Google
What reviewers mention most
Leo and his team were professional and did a great job with the cleaning and the vent repair. Will definitely recommend
Cleaning and vent repair
I had a great experience with your technicians Leo and Danny. The work professionally and communicate with the client. Thank you for your service!!
Air duct cleaning
Danny was fast and reliable, replaced my dryer vent quickly and was very professional. Would look forward to working with you again.
Dryer vent replacement
Free estimate
We look before we quote, and the number we quote is the number you pay.
Open 24 hours, by appointment
Rather talk to someone? Call (877) 824-9359 — open 24 hours, by appointment.
