Tech Tips

In HVAC/R, we are in the business of moving BTUs of heat, and we move BTUs via pounds of refrigerant. The more pounds we move, the more BTUs we move. In a single-stage HVAC/R compressor, the compression chamber maintains the same volume no matter the compression ratio. The thing that changes is the number of […]

During my second year in HVAC, the company I worked for was hired to fix some poor work that was done on a multi-head inverter system. The system used flare connections, and many of them were leaking. The system also had a branch box, which meant there were even MORE flares. So we pumped all […]

If a furnace runs for years and years while tripping the limit switch but satisfies the thermostat, will it ever be noticed? The answer is most likely “no,” but it will depend on whether the furnace utilizes soft or hard lockouts when the limit switch trips. So, what is a soft lockout vs. a hard […]

This article was written by Jennifer Manzo, an HVAC technician and the founder of HVA-Chicks Coalition. You can find her on social media as @HVAChicksjennifer. Thanks, Jennifer! It’s no secret that the HVAC industry is in the throes of an oversizing epidemic. Instead of stating the obvious, I wanted to take a deep dive into […]

This tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich, as well as special guests Craig Migliaccio (AC Service Tech) and Ty Branaman (love2hvac). You can watch that live stream on our YouTube channel HERE. Craig and Ty are HVAC educators with YouTube channels of their […]

This tech tip recaps the livestream by the same name, featuring HVAC School contributors Matt Bruner and Adam Mufich, as well as special guests Ed Janowiak and David Richardson. You can watch that live stream on our YouTube channel HERE. It’s one thing to install a piece of equipment, but it’s another thing entirely to […]

This tech tip was written by Jennifer Manzo, an HVAC technician and the founder of the HVA-Chicks coalition, which offers tech support and training as well as resources for women in the industry. She was one of our panelists on this year's Women's Panel at the symposium and was recently featured on a livestream and […]

About a month ago, one of my techs went on a “no heat” call. The house is a rectory for the church next door. The call came in, and after he ran it, I assumed the problem was solved since I hadn’t heard otherwise.  A few weeks later, they called back, saying the boiler was out […]

There has been a lot of advice being tossed around by contractors and builders about the best time to use the emergency heat feature on an all-electric heat pump system. The answer is never! That was easy. Next article… In all seriousness, “Emergency Heat” should be used as described, ONLY during an emergency. I guess I should […]