Online HVAC and Refrigeration Training

425 - Indoor Air Quality for Commercial Buildings

 (24 Instructional Hours to be completed within one year)

Written by Ron Auvil  

 Indoor Air Quality is a vital topic for any technical staff working in commercial buildings today. IAQ problems can be very expensive for both tenants and building owners. Possible legal liabilities are involved as well. Technical staff today must have a background in IAQ and know how to prevent or mitigate problems as they arise.

This eight-module series is designed for new hires and those transitioning from residential systems to commercial building HVAC. Emphasis is put on real-world troubleshooting and operation scenarios.

Students will take one course-module at a time in a systematic progression. Students are enrolled as online asynchronous. This access allows students to login at their convenience 24/7/365. This program is NATE recognized for 24 hours of continuing education hours (CEHs) which are applicable to NATE re-certification.

The modules making up the course are:

  • Introduction to Indoor Air Quality (IAQ)
  • IAQ Health Hazards
  • IAQ Contaminants and Safety
  • Indoor Air Sampling and Testing
  • HVAC Systems and Ventilation
  • HVAC Control Systems for IAQ
  • HVAC System Preventive Maintenance
  • Prevention and Mitigation of IAQ Problems

Grades: Students who complete a course with a grade of 70% or higher will receive a certificate of completion for that course. Further, at the end of the program, if all four courses are passed with a score of 70% or higher, students will receive a Certificate of Completion for The Johnson Controls Technician Program. All courses in the program also carry NATE continuing education credit for technicians maintaining industry certifications.

About The Instructor:

Ron Auvil has over 40 years of HVAC and controls experience. He has worked as a Senior Controls Technician for Johnson Controls. He has also taught HVAC and Controls classes across the United States for Johnson Controls, Honeywell, and others. Mr. Auvil is a member of the faculty and has authored several courses currently available from These include the Building Automation Systems series and many others. He has written extensively, including the textbooks ‘HVAC and Refrigeration Systems’ and ‘HVAC Control Systems’ both from American Technical Publishers.