Heating, Air Conditioning & Refrigeration Services


At A. T. Chadwick Company, we are trusted providers for mechanical contracting services. Our heating, air conditioning, and refrigeration expertise is world-class and enables us to provide high-value consultation and deployment support. We can provide budgeting, scheduling, conceptualization, labor and material estimating, and value engineering related to new installations and modifications. By matching our knowledge resources and sourcing strategies with your project, we provide critical tools and techniques to make development possible.

Some specific tools we provide include system evaluation and testing, cost reductions, means and methods studies, project management, risk management, scheduling, and material selection. We also offer extensive assistance and invaluable project enhancements, such as:

  • LEED certification
  • OSHA safety considerations
  • 3D CAD and BIM interfacing
  • Timeline management for production planning.

A.T. Chadwick is an NCCER accredited assessment center with the capabilities of administering OQ assessment tests at our main office and mobile worksites.

In accessing our contracting services, you’ll uncover a comprehensive selection of engineers able to provide their application-specific experience on every component of your project. Our continuous internal investment training means that our personnel is always up-to-date on safety, planning, material, and energy-saving codes.

From small office buildings to complete industrial developments, we serve all types of markets and assist any project. For more information about our mechanical contracting services, see the table below and contact us directly

Consulting Discipline: Heating, Air Conditioning, Refrigeration


General Capabilities include:

  • Estimating
  • Budgeting
  • Scheduling
  • Conceptual Estimating
  • Resource Estimating
  • Value Engineering


Set from the Beginning of the Project and is matched into the Schedule with other trades and contractors.


  • Evaluating Different Systems
  • Cost Reduction
  • Means
  • Methods


Conceptual estimating involving:

  • Project Flow
  • Resource Estimating
  • Risk Management


We provide many resources, specific to the project needs:

  • Material Selection
  • Well Trained Employees
  • Sub-Contracted Employees
  • Equipment Selection


  • Managed Timeline from Development to Production
  • Complete the Project Cost-Effectively


LEEDS Certifications, equipment and documentation as necessary


Our focus on safety is vigorous and always ongoing:

  • Industrial Safety
  • Occupational Safety
  • Employees are OSHA Certified Staff is Constantly Trained with Latest Codes
  • NCCER Accredited Assessment Center
  • OQ Assessment Tests at Main Office and Mobile Work Sites


Regarding heating, HVAC and refrigeration, our work applies to:

  • High Rise Buildings
  • Commercial Buildings
  • Industrial Buildings
  • Hospitals
  • Office Buildings
  • Pharmaceutical
  • Institutional