Air-Systems Engineering maintains, constructs, and engineers HVAC, hydronic, controls, and process mechanical systems for manufacturing plants, laboratories, cleanrooms, schools, and municipal facilities across Northern Colorado. Hire us for one of those. Or for all three.
Each one stands on its own — a service agreement, a mechanical bid package, a design. What makes ASE different is that they sit inside the same company, so what one learns, the others use.
Diagnostics, preventive maintenance, and emergency response on chillers, boilers, rooftop units, hydronic systems, controls, and process equipment. The work ASE was founded on in 1991.
Service → 02 · ConstructionPlan and spec mechanical, renovations, equipment replacement, piping and sheet metal, and process work — as a subcontractor to general contractors or direct to the owner.
Construction → 03 · EngineeringLoad calculations, equipment selection, Revit modeling, and construction documents produced inside a mechanical contractor, by people who will be on the job when it is installed.
Engineering →Technicians know how equipment actually performs after ten years in a building — where it fouls, where it short-cycles, what nobody can reach to service. That goes into the next design.
Reading design intent the way an engineer does means conflicts surface during coordination instead of in the ceiling, and equipment gets selected with installation and access already considered.
The people maintaining a system understand how it was installed, how it was commissioned, and how it was meant to operate — because in a lot of cases they installed it.
Field experience is what keeps a design from being theoretically correct and practically miserable. Constructability is settled on the drawing, not argued about in the field.
ASE was founded in 1991 as a service company, and service is still the backbone. Our technicians spend their days in operating buildings, diagnosing systems that were designed by someone else, installed by someone else, and asked to run for twenty years. That experience is why our drawings account for what actually happens to equipment — and why owners who started with a service agreement keep calling us for construction.
Delivered as design-build, as a subcontractor to a general contractor, and as a competitively bid plan and spec package — the delivery method is noted on each.
Advanced Energy · Fort Collins, CO
5,000 SF ISO 7 cleanroom designed, built, and certified in an 8-month window — custom make-up air, humidification, process gases, and pressurization. ASE services it today.
View case study →
NREL · Golden, CO
Welded 316 stainless exhaust added inside an operating ISO 5 cleanroom — prefabricated off-site, installed with downtime confined to scheduled MOP windows.
View case study →
Advanced Energy · Fort Collins, CO
30 rooftop units, a new boiler room, and 26 VAV boxes across an operating manufacturing campus — as prime to the owner and as mechanical subcontractor to Mortenson.
View case study →| Process piping | Welded 316 stainless hazardous exhaust, modeled from existing conditions in Revit, prefabricated off site, and installed inside an operating ISO 5 cleanroom at a federal laboratory. |
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| Occupied facilities | Sixteen rooftop units replaced over two consecutive weekends on a running manufacturing campus. Every unit was operating by start of business Monday. |
| Process cooling | A 125-ton chiller paired with a waterside economizer, designed and installed as prime contractor for a laboratory whose work never stopped. |
| Emergency service | A 40 HP pool supply fan motor failed at a recreation center. The unit was running again within 24 hours — including a 260-ton crane mobilized with our rigging partner. |
| Coordination | Existing-conditions Revit models built for renovation work in live buildings, so conflicts show up on a screen instead of above a finished ceiling. |
Most of these started as a service relationship and grew into construction work. Several have run for more than fifteen years.
Service call, bid invitation, or a system you need designed and built — start with the people who will actually do the work.