About Us

Brian and Angela Terstegge, started Air Specialists Heating & Air Conditioning, Inc. in June 1991, working out of their home and two car garage. In 1994 they moved next door where they built a bigger garage and employed nine people. Four years later, their continued growth prompted them to renovated and relocate to a commercial building in downtown Quincy, IL. With the purchase of Master Air Heating & Air Conditioning of Hannibal, MO in 2004, they undertook a major expansion, leading to the building of a new 12,500 square foot facility for Master Air in Hannibal, Missouri. In 2011, Air Specialists completed renovation on an 8,000 square foot building in Quincy, Illinois, their current company headquarters.

Company Highlights

  • Offers Heating, Air Conditioning, Geothermal, Air to Air, Boilers, Ventilation, Air Purification, Refrigeration, Solar Panels, and Generators for both Residential and Commercial applications
  • Services all makes and models
  • Servicing the tri-state area (southeaster Iowa, northeastern Missouri, and West-Central Illinois) with two convenient locations, Quincy (Air Specialists) and Hannibal (Master Air)
  • Master Electrical Licensed for both Residential and Commercial; State of Illinois Licensed Plumbers
  • Operates a full mechanical shop on the premises
  • Services fireplaces, wood burners, and oil waste burners
  • Sells and installs state of the art technology in high efficiency communicating equipment, and communicating thermostats
  • Trane Independent Dealer since 1991; Trane Comfort Specialist since 1999 launch of program with 96% customer satisfaction rate
  • Daiken AC Certified for sales, installation and servicing
  • Munchkin Boiler Certified for sales, installation and servicing
  • Registered members of the MPGA Missouri Propane Gas Association with all qualified propane gas training completed
  • Experienced team of service technicians and installers continuously update training to stay step ahead of new equipment technology
  • OSHA compliant, NATE compliant, Refrigerant Type I and II compliant, and
    U.S. Environmental Certified for Lead Abatement Removal
  • Air Conditioner Installation
  • Air Conditioner Replacement
  • Air Conditioning Preventive Maintenance
  • Air Conditioner Repair
  • Commercial Duct Cleaning
  • Residential Duct Cleaning
  • Heater Repair
  • Heater Installation
  • Heater Preventive Maintenance
  • Heater Replacement
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