Designing HVAC systems for commercial buildings is no longer just a matter of engineering efficiency or meeting client preferences. Every stage of the process is shaped by building codes, safety standards, and technology regulations. For VRF/VRV systems in particular, these frameworks establish boundaries for how refrigerant piping can be routed, what refrigerants can be used, how energy performance is measured, and how systems must integrate with ventilation and building management platforms. Codes fall into two broad categories: In North America, the International Building Code (IBC) and International Mechanical Code (IMC) provide the baseline for safety and installation requirements. The ASHRAE…
