Train with The Heat Exchanger Experts®

Offering Seminars Nationwide

Upcoming Open Classes

Our Team



Ellis Prach has worked in the HVAC business for over 50 years. He has owned and operated two successful heating businesses. He now tours the nation annually with his sons, Russell and Christopher, delivering heat exchanger trainings and seminars to contractors and home inspectors nationwide.

Author of Heat Exchanger Experts® Residential Heat Exchanger Inspection Manual, as well as many other articles and publications. Ellis is considered one of the foremost experts in the nation when it comes to cracked heat exchangers.

Seeing Problems More Cleary Heat Exchange Inspection Course Heat Exchange Expert Seminar



Russell Prach, son of Ellis, has grown up in this industry. Shadowing his father, Russell has acquired Ellis’ expertise on heat exchanger services, and is eager to pass it along. Russell’s passion and enthusiasm for this trade is contagious; you will see his enthusiasm transpire in his teaching methods as he captures the attention of each and every student or attendee.

Thanks to Russell's passion, both contractors, and home inspectors alike, leave the class inspired and excited to use their newfound knowledge in the field.



Meet the youngest instructor on our team, Christopher Prach. Although new to the training, Christopher grew up in this industry under Ellis, so heat exchanger training and servicing are both very familiar to him.

The knowledge he brings from his extensive field experience, accompanied by the expertise passed down from his father, Christopher makes a great addition to the instructing team. When Christopher is not on tour, aside from being a father, he oversees the field operations in our service company.

About Us



Represents over 50 years of combined expertise in the heating industry.


Upcoming Open Classes

The most effective way to find and identify defects in the heat exchanger.


Our Reviews

We are the expert when it comes to furnace heat exchangers.


Contact Us

If you would like to be informed on upcoming seminars in your area.