The Four Ps of IAQ I’m not the first, second, or probably even the thirty-second person to write about improving indoor air quality problems using the four Ps approach. It’s a well-known thought process in the building science community—not sure if that’s the case in HVAC circles. The first P is for pollutants. In this […]

I knew a tech when I was just starting who was hands down, no questions asked, the best technician at the company I worked. EVERYONE, we are talking over 60 techs… we all knew it. His name was Mike Gilford. Being the little brown-nosing ladder climber I was, I made a complete study of Mike […]

Recovery is the removal of refrigerant from a system. From there, you can either store it and send it in for recycling or to reintroduce it back into the same system. Here are some top tips: Make sure your tank is empty and evacuated to 300 microns if you plan to return the refrigerant back […]