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Bryan Orr
Company name: Kalos Services
Position: Co-Founder and President
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, troubleshooting, team development, business strategy, and community outreach. He is most energized by solving real-world problems and helping technicians become confident, lifelong learners.
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Does Mass or Volume Move Heat?
I once heard someone say, and I have since repeated many times, that BTUs ride on the back of cubic feet of air (CFM). As I've learned more, I've come to the conclusion that the weight or mass of the air passing over the evaporator coil is far more important to understand both in terms […]
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Avoiding and Eliminating Callbacks
Callbacks are horrible. They kill the trade from every possible angle. They destroy customer satisfaction and reduce technician morale by causing long hours, resulting in unprofitability for companies and overall less earning opportunity for everyone. Possibly worse of all, callbacks tell customers that you are no better than their cousin the maintenance man, or worse, […]
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Why Compression Ratio Matters
In HVAC/R, we are in the business of moving BTUs of heat, and we move BTUs via pounds of refrigerant. The more pounds we move, the more BTUs we move. In a single-stage HVAC/R compressor, the compression chamber maintains the same volume no matter the compression ratio. The thing that changes is the number of […]
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Event speaker:

Moisture Hunters: Slaying the Condensation Demons in HVAC
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Business Panel
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10 Things I’ve Learned in the Last 10 Years
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Video guest:

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GRIT Foundation 101: Hosting, Mentoring & Recruiting for Skilled Trades Camps
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Home Pressure 3D
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HVAC Summer Service Calls: Rushing, Mental Fog & How to Stay on Your Game
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Podcast guest:

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The MERV 15 Filtration Physics – Short #300
 In this short podcast episode, Bryan and Roman Baugh talk about indoor air quality and microbial control, specifically MERV 15 filter physics and how it all works when bringing in outdoor air. We filter indoor air to keep dust and particles off the equipment and keep them from circulating through the air. However, we […]
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Tips for Being On Call w/ Ty
 In this episode, Bryan Orr sits down with Ty Branaman for a wide-ranging conversation about what it really takes to be a good on-call technician. They open by reminiscing about how dispatch technology has evolved over their careers — from pagers, radio codes, and outdated paper map books to MapQuest, early GPS units, and […]
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The Florida “M-Word” – Legal Boundaries & Tech Communication – Short #299
 In this short podcast episode, Bryan and Roman talk about Florida law and how it relates to the “M-word” (mold) and the legal boundaries our techs must respect when they communicate with customers. HVAC School and Kalos are NOT mold experts, but we have experience as HVAC professionals who encounter suspicious microbial growth in […]
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Posts Commented

8 Tips for New Techs (So You Don’t Get Fired)
If you are new to the trade, I'd like to welcome you. Like many skilled trades, the HVAC/R trade has many opportunities and can help you make a good living. We need those of you who are young and new to the trade, and we are grateful to have you. But as a word of […]
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The Strange Behavior of Moisture in Stuff
Water is weird and water vapor is even weirder – before we dive down this rabbit hole lets define some terms To better understand the behavior of moisture in materials, we need to first define some essential terms and concepts: Relative Humidity (RH): The ratio of the amount of water vapor in the air to […]
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Basic Electrical Circuits
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