MDMC Inc. An HVAC Company
The MDMC crew measuring a large galvanized plenum in the shop
For Contractors & HVAC Shops

Custom Metal Work

Send us your measurements and we build it from galvanized steel in our own Windsor shop. Plenums, Y branches, transitions, trunk line and the one off pieces nobody stocks. Pickup or delivery. One contractor for the whole job: the same crew also installs furnaces, water heaters, heat pumps and central AC.

The Shop

Built to Your Numbers

MDMC takes the metal industry seriously. Mike has more than 30 years in sheet metal and HVAC, and the shop at 1429 Pelissier Street in Windsor has its own brake for cutting and bending galvanized steel. Contractors, HVAC shops and builders send us their measurements and we build the piece.

Box store fittings cover the common sizes. Real jobs are not always common. When a new furnace sits higher than the old one, when a trunk line has to jog around a beam, or when a rooftop unit needs a transition that no catalogue lists, the piece has to be made. That is what the shop is for.

Who uses the shop

  • HVAC contractors who need a fitting made fast for a job in progress
  • General contractors and builders on new construction and renovations
  • Mechanical and commercial shops needing rooftop or combination unit transitions
How Ordering Works

From Sketch to Steel

  1. Send your measurements

    A sketch, a drawing or a photo with dimensions works. Use the form and pick the contractor option, or call the shop.

  2. We confirm the details

    If anything is missing, like the gauge, the connection type or which way an offset goes, we ask before we cut.

  3. Built in our shop

    The piece is cut, bent on our brake, assembled and sealed.

  4. Pickup or delivery

    Pick it up at the shop on Pelissier Street, or ask about delivery to your job site.

What to Send

Get It Right the First Time

  • All dimensions, with which side is which
  • Inlet and outlet sizes for transitions
  • Offset distance and direction
  • Connection type on each end
  • How many you need
  • When you need it and where it is going
What Sets the Price
  • Size of the piece and the amount of steel
  • How many bends, seams and connections it has
  • Quantity, since repeat pieces go faster
  • How soon you need it
  • Pickup or delivery

Every order is quoted from your measurements before we build.

From the Shop

Recent Pieces

Custom galvanized wye fitting in new construction framing
Custom wye
Galvanized plenum fabricated for an air handler
Plenum
Custom galvanized box fitting on the shop floor
Box fitting
The MDMC sheet metal brake in the Windsor shop
Our brake
FAQ

Fabrication Questions

Do you sell to contractors?

Yes. Contractors, HVAC shops and builders are the main customers of the shop.

What material do you work with?

Galvanized steel, cut and bent on our own brake in Windsor.

What do I need to send for a quote?

A sketch, drawing or photo with all the dimensions, plus the quantity and when you need it.

Can you make a one off piece?

Yes. One off custom pieces are a big part of what the shop does.

Do you deliver?

You can pick up at the shop on Pelissier Street, or ask about delivery to your job site.

New furnace and water heater installed by MDMC

Got a Piece Nobody Stocks?

Send your measurements or call the shop. We build it in Windsor.

Call 519-551-7355
Call Now Free Quote