Mid 1960's to early 1970's Chicago, IL

Regional Service Manager, Armour Industrial Products products were primarily coated products like specialized pressure-sensitive adhesive tapes, e.g.,auto-paint masking and specialized abrasive products,e.g., Leather Polishing/Finishing. Customer of adhesive tapes included all U.S. Automobile Manufacturers: GM, Ford, Chrysler, American Motors.

Early '70's to 1977 South-Eastern Michigan.

Ran a 60 MGD WWTP with Secondary (biological) treatment and Phosphorous Removal.

Also served as South-Eastern Michigan EPA Enforcement Officer through an agreement between the Michigan Department of Natural Resources and the EPA. Michigan was one of several states empowered to act on the behalf of the U.S. EPA. I supervised field personnel in conjunction with this duty.

1977 to 1984 (Fort Lauderdale, FL)

Process Engineer (later, Product Manager) Waste-water Treatment Equipment Manufacturer

1984 to 1989 (Houston, TX) Industrial Products Manager

Water and Waste Water Treatment (WWTP) Equipment Manufacturer

Awarded U.S. Patent for Water Filter, which became a multimillion dollar product.

1989 to 1992 Fort Lauderdale, FL

Consultant to WWTP Equipment Manufacturers (including my previous employer in Houston) Also liaison to German & English companies, with which we had cross-licensing agreements (I speak fluent German)

1993 to 1996 Fort Lauderdale, FL & Dahlonega, GA Vice-President and Technical Director of a WWTP Equipment Manufacturer Awarded 2 U.S. Patents, which also became multimillion dollar products.

1996 to 2003 Fort Lauderdale, FL

Established my own company, designing and making specialized Fluidic/pneumatic control systems, primarily for companies that I had worked with in the past. None of this competed with any of my previous employers.

2004-2005 Fort Lauderdale, FL

Had emergency intestinal surgery, requiring a long recovery time. I took the recovery-time opportunity to get a two year degree in HVAC-R from Atlantic Technical Center. Received Universal EPA card, Qualified to Engineer HVAC-R Projects up to 50 tons in Florida.

2005 to 2007

Air Conditioning Sales and Service Company Trained Service Technicians & essentially a one man engineering. Worked closely with the Contracts Manager & submitted bids for large HVAC-R projects. NATE (North American Technician Excellence) Certified. Purion (and ammonia) Certified.

2007 to late 2009

Eastern NC, Lower VA, & Northern SC Senior Commercial HVAC-R Technician, trainer, & trouble shooter for problematic installations, including new and existing installations. Also prepared bids for large projects, like dormitory solar-heat conversion at UNC, and others.


American Society of Chemical Engineers American Chemical Society Cooling Tower Institute American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) (And others)

2010 to Present Roxboro, NC

Retired,but served as consultant to my previous HVAC-R employer in Fort Lauderdale via connection to their mainframe computer, allowing me to access all files and even print drawings in Fort Lauderdale from my home in NC.

If you do a patent search, use both Carl J Hering, Jr. and C.J Hering, Jr. A patent recipient can only use one initial, but "J" is my full middle name, not an initial. Patents were awarded to me both ways. I often use C.J. Hering, but the period after the "J" is technically not valid.

I am currently co-authoring a paper with a past customer, who is now President of a Water and Waste-Water Treatment Equipment Manufacturer in California. It highlights the connections between water and modern-day refrigerants in both a historical context, but also how the are inexorably tied together.

Over my career, I have found that water people know very little about refrigerant applications and refrigeration people know very little about water applications. Yet, large-scale projects and installations employ both.