Informing & Supporting
Conditioning Air Professionals & the Industry
Tampa, US
1:19 pm,
January 2, 2025
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Tech
The HVAC/R Island of Misfit Toys by Bryan Orr on December 25, 2023 08:22 a.m.
It’s that time of year again. The tree has been decorated, cookies have been baked, festive family photos with my 10 kids have been sent … Read more
Air Changes Confusion by Bryan Orr
Air changes per hour (ACH/ACPH) simply describes how many times the quantity of air in a room (or structure) is completely replaced per hour. If … Read more
HVAC School: Weighing Refrigerant In and Out by Bryan Orr
If you don’t use a scale every time you add or remove refrigerant, I suggest you begin doing so immediately, if not sooner. Weighing in … Read more
Sizing Return Grilles by Matt Bruner
A few weeks ago, I spent several days redoing a duct system and replacing a furnace for a friend. I had static pressure readings from … Read more
Sales: Techniques or Values? By Matt Bruner
“The very substance of our existing which has made us leaders in technique, stands as a barrier to any thinking which might be able to … Read more
The “5 Pillars” of Residential A/C Refrigerant Circuit Diagnosis
Co-Founder and President at Kalos Services, Bryan Orr has been involved in HVAC training for over 13 years. Bryan started HVAC School to be free … Read more
In the Spotlight
AHR Expo • 2025 Trend Report
December 19, 2024
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From the Director. While it may seem like an overwhelming amount of information, the Trend Report offers some interesting highlights and insights into current topics from: Industry Associations “From the Floor” visions from Doug Bougher Director of Applied Sales for LG Electronics USA and David Budzinski, President of Global Residential & Light Commercial at Johnson Controls “From the Field” with
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