Exhaust stack being repaired at Helena Middle School.



Millenium Engineering Incorporated exists to provide the finest consulting engineering services to the Montana and Northern Wyoming region. These services encompass all traditional aspects of building engineering in the mechanical and electrical engineering disciplines. These services include project definition and programming, design and drafting, preparation of contract documents, and construction contract administration.


HVAC designs can vary greatly depending upon each projects unique characteristics. Each project is engineered to suit the demands each system requires. The design team at Millenium Engineering Inc. has knowledge with the following HVAC equipment: Rooftop and outdoor units, open and closed loop chiller systems, hydronic heating and cooling systems, make-up and exhaust air systems, heat exchanger systems, variable air and constant air systems, furnace systems, air and water heat pump systems, split systems, reheat coil systems, duct-mounted heating/cooling systems, steam water and electric unit heaters, and many more HVAC systems.


In addition to the HVAC systems above, the mechanical and electrical engineering design professionals here have extensive knowledge in the realm of plumbing and piping systems. The plumbing systems that we implement include both potable and non-potable systems. Examples of potable water systems are domestic hot, cold, and recirculation systems. Non-potable water system examples include, but not limited to: waste and vent systems, grease disposal systems, propane or natural gas systems, boiler water circulation systems, compressor refrigerant systems, cooling water systems, and condensation systems. 

Light Office HVAC & Plumbing Design


Millenium Engineering Inc. provides mechanical and electrical engineering expertise in the design needs of light office HVAC design. Our design experts are familiar with designing and implementing mechanical designs in demolition, retrofit, and new construction.

Public Buildings HVAC & Plumbing Design


The mechanical and electrical engineering expertise provided by Millenium Engineering Inc. for the design needs of public building and institutional HVAC systems is thorough. Our design experts are familiar with designing and implementing mechanical designs in demolition, retrofit, and new construction. Our portfolio of completed projects includes: public school mechanical systems, college institution building mechanical systems, state government buildings, military buildings, and public rest areas.

Commercial HVAC & Plumbing Design


The design staff at Millenium Engineering Inc. is vastly knowledgeable in all facets of Commercial HVAC design. The design team has experience creating custom engineering solutions for: commercial office spaces, convenience store remodels and new construction, restaurant HVAC and kitchen hood design, motel applications, casino HVAC, and retail store HVAC systems.

Industrial HVAC Design


Millenium Engineering Inc. has a design staff that can engineer a solution for any industrial HVAC project.