Built Right From the Ground Up

Complete HVAC installation for new residential and commercial construction in Minneapolis, St. Paul, and surrounding areas

When you build new in St. Paul, your HVAC system is part of the foundation of comfort and performance for decades to come. Minn Mechanical Contractors LLC works directly with builders and contractors to install furnaces, air conditioners, boilers, ductwork, radiant heating, and refrigeration systems that match the design and long-term needs of your property. You bring the vision for the structure, and we bring the mechanical systems that keep it running.

Our team coordinates with your builder through framing, rough-in, and final installation to make sure every line, vent, and connection is placed correctly and inspected for code compliance. Whether your project is a single-family home in St. Paul or a multi-story commercial development, we design the system to match square footage, occupancy, and Minnesota climate demands. You get equipment rated for efficiency, airflow balanced across every room, and systems installed to last.

If you are starting a new build in St. Paul and want to discuss mechanical systems early in the planning process, reach out to Minn Mechanical Contractors LLC.

System Design That Matches Your Building

We begin by reviewing your blueprints and schedule, then coordinate mechanical rough-in once framing and structural work are complete. In St. Paul, that timing usually falls after walls are up but before insulation and drywall go in. Our crew installs supply and return ductwork, refrigerant lines, gas piping, and venting according to the layout your builder approved.

Once the system is running, you will notice even temperatures in every room, quiet operation from properly sized equipment, and lower utility costs compared to older or undersized systems. Designed for long-term efficiency and code compliance means the equipment performs consistently through Minnesota winters and summers without constant service calls.

We also handle boiler installations for hydronic heat, radiant floor systems for garages or mudrooms, and refrigeration equipment for commercial kitchens or storage spaces. Each component is selected based on load calculations, not guesswork. Final inspections and startup are included, so you move into a building that is ready to operate from day one.

Questions That Come Up During Planning

New construction involves coordination across trades and timelines, so it helps to know what the HVAC portion includes and when it happens.

What does HVAC rough-in include?
Rough-in covers ductwork installation, refrigerant line placement, gas piping, venting, and any radiant tubing before walls are closed. Final equipment and trim happen closer to completion.
How do you coordinate with the builder?
We follow the construction schedule your builder sets and communicate directly with the general contractor to avoid delays. Our crew arrives when framing is ready and returns for startup once electrical and gas lines are connected.
When should I start planning the mechanical system?
You should discuss HVAC during the design phase so load calculations and equipment placement are part of the blueprint. Early planning prevents last-minute changes that delay construction or add costs.
What happens if the building layout changes?
We adjust ductwork or equipment placement based on approved change orders from your builder. Changes after rough-in may require additional labor or materials depending on what was already installed.
Why does system sizing matter in new construction?
Correct sizing ensures your furnace and air conditioner match the heating and cooling load of the building. Oversized equipment cycles on and off too often, while undersized systems run constantly and still leave rooms uncomfortable.

Minn Mechanical Contractors LLC installs mechanical systems in new residential and commercial buildings across St. Paul, working with builders who want systems done right the first time. If you have a project in planning or under construction and need a mechanical contractor on your team, get in touch with us to review your timeline and system requirements.