Before we convert temperature scales, let's take a step back and think about what temperature is in the first place. Temperature is proportional to the average kinetic energy of the random microscopic motions of the constituent microscopic particles, such as electrons, atoms, and molecules. Translation: Temperature is the average “movement energy” of the molecules in […]

As of January 1, 2026, refrigerant regulations in the United States have undergone YET ANOTHER big shift. Per Subsection H of the American Innovation and Manufacturing (AIM) Act, which was passed by Congress and signed into law in December 2020, the Environmental Protection Agency (EPA) has officially expanded leak repair and recordkeeping requirements to a […]

This is a recap of the 7th Annual HVACR Training Symposium session, with a few key themes and takeaways. If you missed the symposium but find some topics of interest in this tech tip, you can still purchase a virtual ticket at hvacrschool.com/symposium. You must be logged in to your account with a ticket to […]

James Bowman talks to Bryan about leak sealant products, including RectorSeal's Leak Freeze product. James talks about how sealants work, what happens when they don't work, and how to be open-minded without being gullible. Leak sealants must not react adversely with the components inside a system (oil and refrigerant). Just as mineral oil caused some […]

In this episode, Bryan speaks with James Bowman from Rectorseal about hard start kits, PTCR devices, run capacitors, compressor overheating, and the Kick Start product. We also go pretty in-depth on potential relays and how they operate. Hard start kits are mechanical potential relays connected to a capacitor, and they aid in starting the compressor. […]