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Diagnosing a Reversing Valve

Introduction Replacing a reversing valve is either every technician’s dream or nightmare. The sheer amount of brazing in

Crankcase Heaters

Belly band crankcase heater When I first started in the trade as an apprentice, we worked on many Trane heat pumps that

Coil Cleaners: A Guide to Which Cleaners to Use in Various Applications

Spring and fall are the seasons where all service technicians get turned into janitors. Some techs see this as a chore a

What’s the scoop on PM10 and PM2.5 Particles?

MATLAB Handle Graphics It was December 5th, 1952, only seven years after the end of WWII in London, England, when the &#

Priorities of an Ideal HVAC System Design

There is so much to consider on any sort of design project, and HVAC system design is no exception. Unfortunately, the p

Bypass Dehumidification/Airflow HVAC Design

There have been several past posts on our Facebook group page about a concept called bypass dehumidification. I think te

HVAC Soft Skills Best Practices

In the residential HVAC industry, technicians are faced with customers every day. Each interaction presents its own set

Preventing Callbacks and Warranty Returns

“Haven’t you heard?! Air conditioning is a fundamental human right! If you don’t support my right to have air conditioni

Commissioning a Residential Split Heat Pump

Commissioning a system is critical anytime a technician makes any type of repair or alteration to an existing system. It

Flaring Copper: Best Practices

Technicians have to make flare fittings in the field every day. Most of the time, the application is for mini-split/duct

Swaging Copper: Best Practices

Swaging copper is one of the most common practices in our trade when it comes to brazing pipes. Yes, it sometimes makes

Total External Static Pressure (TESP): A Basic Review

Probably the most popular measurement method for indirect airflow readings is total external static pressure (TESP). A d