Online HVAC and Refrigeration Training

Announcing the New 425 Indoor Air Quality For Commercial Buildings Course

THE Indoor Air Quality Course for Commercial Buildings

We are excited to announce the release of our latest course offering:

425 Indoor Air Quality for Commercial Buildings
Authored by the renowned Ron Auvil.
This comprehensive training program is now available for HVAC professionals looking to expand their expertise in indoor air quality management.

Enhance Your Skills with Cutting-Edge IAQ Training

Indoor Air Quality (IAQ) is a crucial component of maintaining healthy and efficient commercial buildings. Poor IAQ can lead to significant health risks, legal liabilities, and increased operational costs. Our new course addresses these challenges head-on, equipping you with the knowledge and skills to ensure optimal air quality in any commercial setting.

Course Overview: Comprehensive and Flexible

The 425 Indoor Air Quality course is a meticulously crafted eight-module series that provides 24 instructional hours of top-notch education. Designed for new hires and professionals transitioning from residential HVAC systems, this course focuses on real-world troubleshooting and operational scenarios, making it a perfect fit for today’s demanding commercial environments.

Key Modules Included:

  1. Introduction to Indoor Air Quality (IAQ)
  2. IAQ Health Hazards
  3. IAQ Contaminants and Safety
  4. Indoor Air Sampling and Testing
  5. HVAC Systems and Ventilation
  6. HVAC Control Systems for IAQ
  7. HVAC System Preventive Maintenance
  8. Prevention and Mitigation of IAQ Problems

These modules are designed to build on each other, offering a comprehensive and systematic learning experience.

About the Author: Ron Auvil

Ron Auvil

Ron Auvil, a Senior Controls Technician for Johnson Controls and an experienced instructor, brings over 40 years of HVAC and controls expertise to this course. He has taught HVAC and controls classes nationwide and authored several key courses available at His extensive writing includes notable textbooks like HVAC and Refrigeration Systems and HVAC Control Systems.

Flexible Learning with

Our course is delivered through an online, asynchronous format, allowing you to access the material 24/7/365 at your convenience. This flexibility ensures that you can balance your professional development with your busy schedule. Additionally, the course is recognized for 24 continuing education hours (CEHs) by NATE, applicable towards NATE re-certification.

Why Enroll in This Course?

  • Expert Instruction: Learn from a seasoned professional with decades of real-world experience.
  • Comprehensive Curriculum: Gain a thorough understanding of all aspects of IAQ in commercial buildings.
  • Flexible Access: Study at your own pace with 24/7 access to course materials.
  • NATE CEHs: Earn 24 CEHs towards your NATE re-certification.

Don’t miss this opportunity to enhance your HVAC career and ensure superior indoor air quality in the buildings you manage. Enroll in the 425 Indoor Air Quality course today and start your journey towards becoming an IAQ expert.

For more information and to explore other advanced courses, visit
Invest in your future and take the next step in your professional development today!