Tech Tips

There is not much worse than having a service call where you can’t figure out where the water is coming from or where it came from before you got there. I have spent many hours scratching my sweaty head in attics while I stared into the riser of a drain line, waiting for water to […]

Sometimes, you just get lucky. Sometimes, you get sent out to install a unit in a closet! Although these types of installs have their challenges, at least for me, they have appeared easier on the surface. There is no return ductwork, as the unit sits on a platform. We are rarely disconnecting ducts in the […]

When you start talking airflow, it can get pretty in-depth pretty quickly. There is a big gap between what is useful for the average tech to apply every day and the whole story, so let's start with the simplest part to understand: static pressure. Static pressure is simply the force exerted in all directions within […]

This tech tip was submitted by Tim De Stasio. He originally published it on his website, which you can visit HERE. Thanks, Tim! Winning takes strategy and the right information. The HVAC business is no different.  But what information should we collect, even pay for, to get better and win? What if these widely accepted […]

This tech tip was written by Don Gillis with Chemours. Thanks, Don! Evacuation helps remove contaminants, like moisture and non-condensable gases, from HVAC/R systems, especially ones that are put into service for the first time or put back into service after a repair. Even though pulling a deep vacuum has always been a best practice, […]

It took me years to build a picture in my head of what superheat and subcool mean. They were these strange words that dropped out of nowhere when I entered the HVAC world, and in the midst of grappling with so many other things, I could tell they were very important. Over time, I have, […]

This tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich, as well as special guests Russ King, Steve Rogers, and Tony Amadio. You can watch that live stream on our YouTube channel HERE. It was a beautiful day outside. The sun was shining, the birds were […]

This tech tip was written by David Richardson, the Vice President of Training for NCI. David has been on several podcasts and has spoken at the HVACR Training Symposium multiple times. Thanks, David! Your ideas and experiences are the ingredients for great articles. Unfortunately, they are easy to forget if you don’t capture them in […]

❶ Understand What a Run Capacitor Does The run capacitor provides continuous phase-shifted current to the motor start winding, allowing the motor to run: With the design efficiency In the right direction With the appropriate torque With near “unity” power factor (power factor near 1.0) If the run capacitor is failed, the motor often won't […]