These HVAC technicians earned or renewed their North American Technician Excellence certifications between December 23 and December 27, 2013. Please join ContractingBusiness.com in congratulating them!
ContractingBusiness.com and Supermarket News magazines brought leading refrigeration contractors and supermarket executives together to discuss the challenges they face in the new refrigeration era.
Part III: Refrigerants & Product Warranties
When measuring and diagnosing the operation and performance of an HVAC system, the timing and measurement are critical. Ideally, the system should be calling for full heating or cooling, and fan speed so it can reach a stable operating condition. Let’s take a closer look at what constitutes stable operating conditions so your test data allows you to accurately diagnose the performance and operation of your systems.
Why is Stability So Important?...More