User posts

On the latest video of unspent gas and CO, Brian was talking about the usage of the CO detector. I’d the idea that you run the furnace and walk through the home with the detector? Am I using the detector right at the furnace and all through the home? Thanks!

What are the alternatives for the Emboaco NJ9238GK compressor?

The drain line that flooded a ceiling — the 2-minute check I skipped Three years ago I got a call from a customer whose living room ceiling was stained brown and sagging. The system was cooling fine. Pressures were perfect. The problem was a condensate drain line — clogged with the kind of gunk that […]

Why your superheat reading lies to you (and it’s usually not the gauges) We’ve all done it: hook up the gauges, get a superheat number that makes no sense, and start adding or pulling charge to chase it. Then the next tech comes out, gets a different number, and the customer gets a system that’s […]

Shadow etiquette: how to learn from a lead tech without slowing him down If you’re lucky enough to ride along with a good lead tech, here’s the uncomfortable truth: you’re a cost to him until you prove otherwise. Every minute he spends explaining is a minute he’s not billing. The shadows who get taught the […]

Reading a schematic without panicking: the 3-pass method. Every new tech has the same moment: you open the panel, there’s a wiring diagram that looks like a bowl of spaghetti, and your brain goes blank. Mine did for months. Here’s the method that finally made schematics readable for me — three passes, one circuit at […]

Just finished listening to the latest HVAC School podcast with Aprilaire. One thing I wish they’d gone into a little more detail on is filter media loft—not the overall filter depth (3”, 4”, 5”, etc.), but the actual thickness of the media itself. We use Aprilaire filters in our company and have been really impressed […]

New here — hello from Hawthorne Hey everyone, I’m Willson. I’m not a tech — I’m building ZOQENA, an AI automation company for small service businesses, and I’m here because the best way to understand how shops actually run is to listen to the people doing the work. I want to learn how real HVAC […]

Hello, I am looking for a simple animation software to use in my classroom to draw out refrig cycle electrical diagrams etc. would be nice if it worked directly with a clever touch screen board if not just a way to make them without being a graphics artist