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 […]

Title: NATE Testing & Review Description: Bryan Orr with HVACRSchool.com will offer a general, technical NATE review from 8am-11:30am and proctor a session of North American Technician Excellence (NATE) technician certification testing in the afternoon from 1pm-5pm. The Review will cover elements of the CORE, Air Conditioning and Heat Pump exams and how the concepts apply […]

If you work in large commercial offices or mixed-use buildings, you almost certainly work with VAV systems regularly. If you aren't familiar with VAV, this is a quick intro to the basics so that they won't seem so overwhelming. VAV stands for variable air volume; this means that the AHU (air handling unit) can vary […]