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In the last year or so, I have had a couple of puzzling experiences related to pulling a vacuum. These instances have left me with … Read more
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 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
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
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
“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
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
