DISCLAIMER: HVAC School is NOT an official OSHA safety training resource! Although we provide safety tips in good faith, our website is not a substitute for safety training from an authorized OSHA training source. Although we primarily work with our hands, our eyes are one of our most valuable assets in the industry. After all, […]

Most techs know that you shouldn't fill a recovery tank more than 80% with liquid-based refrigerant. Many know that the WC rating stands for “water capacity.” So, you need to adjust for the density of the actual refrigerant rather than just using 80% of WC. I hope most of you know that the TW marking […]

When working in a business with people, you have two options: 1. Become bitter as you experience people, life, and issues. 2. Grow from experiencing people, life, and issues. I’m not proud to say it, but I realize now that when I started my business and had bad experiences, I would run to option #1 […]