When evacuating, the FASTEST way is to use two large-diameter hoses connected to two core removal tools and the cores removed. These hoses are then connected to the pump using a tee or evacuation “tree.” However, when you only have one large hose, another acceptable method is to connect the large hose to the suction […]

Maintenance is not the sexiest part of our trade, and that’s ok. There really aren’t that many parts of our trade that are sexy, to be honest. Maybe maintenance is just the lowest on the totem pole. It can be easy to get into a routine of plowing through one after another, trying to check […]

If you went to school and learned the “gas laws” early on, you probably thought it seemed LAME. Then, later, things like mass flow rates, airflow conversions, and compression ratios seemed HARD. Well… It's because HVAC is hard if you don't understand the concepts behind the gas laws, even if you never learn to do […]