Home » Authors » 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

The Five Pillars Of Residential A/C Refrigerant Circuit Diagnosis

Take all of these into account on each service call

Bryan Orr

February 17, 2020

No Comments

Suction pressure, head pressure, subcooling, superheat, Delta T: Taking all five of these calculations into account is critical.

Understanding the Use of Suction Filters/Driers

They can help protect compressors when used right

Bryan Orr

February 3, 2020

No Comments

Unfortunately, we can easily forget the role that suction driers can play in protecting the compressor and the compressor oil.

Why Air Conditioning Systems Freeze and How to Fix Them

Understanding the basics will help your service team

Bryan Orr

January 20, 2020

No Comments

Some systems we work on and install will freeze. Air conditioning is not one of them.

How to Diagnose a Thermostatic Expansion Valve Failure

Tips for understanding the role of the TXV, and how to service it

Bryan Orr

January 6, 2020

No Comments

This article will hopefully save the lives of a few TXVs and the pocketbooks of some customers.

A Guide to Air Barriers, Vapor Barriers, and Insulation

Understanding these basics will help with building issues

Bryan Orr

November 25, 2019

No Comments

Trying to fix building problems with equipment can be a problem. Here are some basics to help you diagnose and solve building issues.

The Basics of 20 mA Control

Understanding electrical controls

Bryan Orr

October 28, 2019

No Comments

Controls have gone from mechanical to electrical, so we have systems that are controlled by analog electrical signals and digital electrical systems.

Four Mistakes for Beginning HVAC Techs to Avoid

Tips to stand out for successful work

Bryan Orr

September 30, 2019

No Comments

There are some very preventable mistakes that occur due to simple oversight and carelessness. A few practices will avoid them.

An Introduction to Glide at Static Pressure

Bryan Orr

September 16, 2019

No Comments

We’ve been spoiled in the USA because we haven’t needed to deal with glide much. But the days of being able to ignore glide are coming to an end.

Eight Quick Tips for Electronic Leak Detection

Advice for perfecting this common technician's task

Bryan Orr

August 5, 2019

No Comments

Electronic leak detection is a very common sources of misdiagnosis. Here are tips to make your leak detection more successful.

Gas Law Concepts For HVACR

Understanding the ideal gas law eases understanding of HVACR

Bryan Orr

July 8, 2019

No Comments

HVACR is harder if you don’t understand the concepts behind the ideal gas law.

View All Articles by Bryan Orr

Private Equity Firms Investing in HVAC Contractor Consolidation

2019 Best Contractors to Work For: HVAC Company Values Awards and Incentives

2019 Best Contractors to Work For: North Carolina HVAC Company Creates Family Atmosphere

Compressor Discharge Temperature Reflects How Equipment is Operating

Trademark Infringement Allegation Gets Fan Manufacturer Thrown Out Of Expo

Submit a letter to our editors.

Events

February 25, 2020

Wholesaler eCommerce 101: Addressing Mindset then Revenue

eCommerce has and will continue to transform the way we look at wholesale distribution. Every stakeholder in the supply chain has woken to a new landscape with challenges that are too large to tackle all at once. In fact, most wholesalers don’t have the right staff in place to educate and guide management towards the basic principles of eCommerce.

March 4, 2020

HVAC Contractor Best Business practices and other recommendations to keep money in your pocket

Come learn about ways that you can protect against costly call-backs and common installation pitfalls. We’ll identify common causes that “reverse the flow of money”, aka: spending more on a job than you make.

View All Submit An Event