Start
Here is where your journey into HVAC nerdiness may start. Check out our latest videos, tech tips, and podcasts all in one place.
April 15, 2026
Refrigerant Circuit Basics for HVAC techs
Every HVAC technician goes through the same journey — first you're learning a new language just to understand what a compressor, evaporator, and condenser even are. Then you're stacking fresh knowledge and feeling confident, until your first real problems hit and you realize how much you still don't know. That uncomfortable stage between year one and year three? We've all been there.
Get Tech Tips
Subscribe to get free tech tips.
Check our latest Tech Tips
I was fresh out of school, working as an apprentice at my first real HVAC job, and I was listening in on a shop conversation between a few techs. They were talking about finding so many overcharged systems. One of the techs turns to me and says, “I had a unit yesterday that was so […]
Read more
I live in Central Florida, and while it can get pretty hot in the summer, we also tend to get afternoon thunderstorms that come and go in a flash. I have been connecting gauges, checking charges, and even pulling vacuums in the rain (even under umbrellas or cardboard boxes) for most of my career. Only […]
Read more
If you are new to the trade, I'd like to welcome you. Like many skilled trades, the HVAC/R trade has many opportunities and can help you make a good living. We need those of you who are young and new to the trade, and we are grateful to have you. But as a word of […]
Read more
Our Most Popular Videos

