Kelli Ann Bilicki

Vannesa Vasquez



Air Systems Service & Construction was established in 1996 and specializes in fast track complete turn-key mechanical Systems. In 2012 ASSC acquired Heathorn Mechanical Systems located in the Bay Area and in 2015, opened an office in Reno and is now serving clients all over Northern California and Nevada.

Providing more than HVAC services, we have the professional expertise to assist in the design and installation of sophisticated mechanical systems for office buildings, fabrication facilities, commercial and industrial applications.

Over the past decade, we have experienced unprecedented growth. Our desire to Inspire and Deliver Value is reflected in the most competitive rates while maintaining the reputation of providing the best mechanical systems in the industry.


  • Preventive Maintenance
  • Guaranteed Maintenance
  • Energy Star Benchmarking
  • Full Facility Mechanical Support
  • 24/7 Emergency Support
  • Improvement Recommendations
  • Boiler Emission Testing
  • BMS/EMS/Controls
  • Architectural Sheet Metal
  • TABB Fire Life Safety Level 1
  • BIM/3D Modeling
  • Design Build Construction
  • Backflow Repair & Testing
  • LEED Certified
  • Med Gas Installation
  • Equipment Evaluations
  • Medical/Labs/Clean Rooms

Service Areas:

  • Sacramento Region
  • Stockton – Modesto
  • San Francisco Bay Area
  • North Bay Area
  • Silicon Valley
  • Santa Rosa - Napa
  • East Bay