Upcoming Events:

Please join us at our Ozarks ASHRAE monthly meeting. Per usual, the event will start with networking followed by a speaker and lunch. We look forward to seeing you there!

Monthly Meeting Location:
1538 South Enterprise Avenue Springfield, MO 65804

Mike Grant – AC Drives, Harmonics & Energy

September Meeting: Tues. Sep 12

AC Drives, Harmonics & Energy

Mike has been an AC drives engineer at Yaskawa America, Inc. (formally Magnetek) for 36 years he is a Husband and a Father of 4 adult children and now Grandfather. Mike enjoys problem solving and educating engineers and facility owner – operators in the discipline of Electro-Mechanics and AC drives.

Here are someSpecifics on regarding harmonics and AC drives that will be discussed:

Mitigation options and direct AC to AC drives.

Energy savings via higher efficiency than standard voltage source AC drives.  

How AC to AC VFDs function. Includes Technology overview, 3 level topology, and Eco mode – bypass innovations now available.

Energy Efficiency of drives, and power factor comparisons.

Meeting Location

Not a Member?

We are looking for volunteers for roles inside the chapter. These roles include the following:

  • Committee Chairs and Co-Chairs
  • Social Media Presence
  • Photos

Very little time, can go a long ways. Please contact Zach Altis for details.



To advance the arts sciences of heating, ventilation, air conditioning and refrigeration to serve humanity and promote a sustainable world.


ASHRAE will be the global leader, the foremost source of technical and educational information, and the primary provider of opportunity for professional growth in the arts and sciences of heating, ventilating, air conditioning and refrigerating.



ASHRAE education, technical information and all other activities and products will always reflect the best practices that lead our industry. We strive for continuous improvement and innovation in all our practices and products.


ASHRAE and its members are passionate about serving the built environment, creating value, and recognizing the accomplishments of others.


ASHRAE is committed to the highest ethical standards. We work transparently, observing essential requirements for due process and peer reviews to assure our members and stakeholders that we do the right things the right way.


ASHRAE seeks and embraces collaborative efforts with organizations, agencies, and individuals sharing our commitment to sustainable built environments.


Members lead ASHRAE at every level, serving ASHRAE and helping ASHRAE serve society.

Visit the society website for more details: