Bryan Orr

Bryan Orr

Bryan Orr is an HVAC and electrical contractor in Orlando, Florida. He is the founder of HVACRSchool.com and the HVAC School Podcast. He has been involved in technician training for 15 years. 

Articles

ARTICLES

Mastercool: Leak Detector

Leak Detector Maintenance and Care

Quality care and testing will help find leaks the first time
Orr-hs
Bryan Orr
May 27, 2019
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A good leak detector is a big investment and one of the more important tools a tech has on the truck. One thing that I have learned is that with leak detectors care, maintenance, and testing is a huge part of finding leaks the first time.
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Three-Phase-ACHR-NEWS

Three-Phase Power and Voltage Imbalances

A little electrical knowledge can go a long way in troubleshooting HVAC systems
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Bryan Orr
March 18, 2019
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In HVAC, we rarely need to have a deep understanding of electrical design. But there are a few cases where a little understanding can go a long way in identifying issues before they cause trouble, and that is the intent of this short article.
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Deep Evacuation on a Grocery Store Rack - The ACHR News

How to Properly Evacuate Refrigerant

Don’t Suck When Pulling a Vacuum
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Bryan Orr
February 25, 2019
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Evacuation is often called “vacuum” or “pulling a vacuum,” and it’s one of the most important parts of the HVACR installation and repair process where the refrigerant circuit is involved. Our goal should be to keep the closed refrigeration circuit clean, dry, and tight — just like I was taught since the very first week of HVAC school.
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EE_Technical

A Really Loud Compressor

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Bryan Orr
February 4, 2019
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Yesterday I walked up on one of our managers who was talking to a junior tech diagnosing an intermittent controls issue on a pool heat pump.
In the background, you could hear an extremely loud compressor.


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Checking the Charge on a Heat Pump in the Winter

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Bryan Orr
January 7, 2019
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If you are making a refrigerant circuit repair, weighing out and weighing in makes perfect sense, especially since microchannel condensers and scroll compressors make pumping down less viable anyway. But there are many cases where you just need to check the charge to make sure the system is working properly, and in these cases, weighing in and out is just plain silly.


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