Contributors and Authors

Bryan Orr

Founder, HVAC School

Co-Founder and President · Kalos Services

Bryan Orr is the co-founder of HVAC School and co-founder and president of Kalos Services in Clermont, Florida. He began working in the trades in 1999 and created HVAC School to make practical HVAC/R education freely available across podcasts, videos, articles, courses, and live training—For Techs, By Techs. A working contractor, trainer, consultant, and host of the HVAC School podcast, Bryan focuses on technical education,…

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Adam Mufich

Instructor · National Comfort Institute

HVAC started in Adam’s family with his Grandpa Joe, who was the chief Engineer at several notable buildings in Chicago, including the historic Palmer House Hotel. Adam’s father, Ralph Mufich, started working for Trane’s Comfort Corps in the 1970s. Ralph opened a residential HVAC company in the early 1990s. Adam worked for the family business until the year 2012, when the company was sold. This…

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Alex Meaney

HVAC Design Consultant, Trainer, and Designer · Mean HVAC Consulting and Design LLC

Alex Meaney is the Owner of Mean HVAC Consulting. He spent the bulk of his career prior as Wrightsoft's Director of Training and is currently a technical advisor to the Air Conditioning Contractors of America (ACCA) and a trainer to anyone willing to listen to him.

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Bill Spohn

President · TruTechTools, LTD

Bill Spohn is an industry leader with over 30 years of experience in HVAC, building performance, and test instrumentation, and he serves as the President and CEO of TruTech Tools, Ltd. A professional engineer (PE) with degrees from the University of Rochester, Bill is dedicated to providing accurate and reliable tools for industry professionals. His passion for education, safety, and efficiency shines through his work…

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Eric Kaiser

Principal · EL Kaiser Company

More than 20 years ago, Eric was invited to join a small HVAC company, where he started in the trade as a residential service technician. As time progressed, he held several other positions, including industrial HVACR technician & distributor technical support. During this time, a passion developed for creating comfortable & healthy indoor spaces and sharing learned knowledge & skills. Eric now offers services that…

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JD Kelly

Owner · A/C Direct & StudentofHVAC

JD Kelly (also known as StudentofHVAC) is a licensed HVAC contractor and is the owner-operator of A/C Direct, an Alabama-based residential air-conditioning service business. JD is also the content creator for the StudentofHVAC social media pages and is a passionate enthusiast of HVAC training and education.

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Jim Bergmann

President · MeasureQuick

Jim Bergmann is an HVAC specialist who has worked with Testo, TruTech Tools, and AccuTools throughout his career. He is also an industry educator and the current president of measureQuick, an app that helps technicians do better jobs with just-in-time education and assisted diagnosis. He can read a psychrometric chart and actually performance-test HVAC equipment.

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Leilani Orr

Executive Director · GRIT Foundation

Leilani Orr, Executive Director at GRIT, a home-school educator for 20+ years, events coordinator & volunteer at Kalos Services, is heavily involved in the community and building partnerships with others to help bridge the gap of skilled workers in the USA.

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Matt Bruner

Owner · Hearthstone Heating & Air

Matt is a technician and small business owner in Dallas, Tx. He got into HVAC about 5 years ago and can't get enough of it.

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Sam Myers

Building Scientist · Retrotec

Sam Myers is the Building Science Director at Retrotec, where he leads building science, training, field research, and diagnostic tool development for residential, commercial, and industrial buildings. With more than a decade of experience, his work focuses on airtightness and enclosure performance, helping practitioners apply reliable testing methods while contributing to industry standards and technical committees. Sam holds a master’s degree focused on the built…

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Tessa Murry

Founder · Your House Coach

Tessa Murry is the founder of Your House Coach and an experienced building scientist, home consultant, and educator specializing in home performance. Tessa holds a Bachelor's degree in Residential Building Science and Technology from the University of Minnesota and has over 18 years of industry experience, including leadership roles in construction, energy auditing, home performance diagnostics, and home inspection. She spent seven years conducting over…

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Tim De Stasio

Owner and President · Comfort Science Solutions LLC

Tim De Stasio is a licensed HVAC contractor, designer, and trainer who focuses on high-performance HVAC systems, home performance diagnostics, and moisture control. His YouTube channel is @timdestasiohvac.

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TY Branaman

Instructor/content creator · N/A

Ty is a Certified Master HVAC educator who started in the trade by building ductwork with his father in 1995. Nowadays, Ty focuses almost exclusively on HVAC education, helping others with their training programs, and creating educational content through his YouTube channel (Love2HVAC with Ty Branaman). He is also the head of training at the GRIT Foundation, a nonprofit organization that introduces young people to…

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