What are the common units used to express water flow rate in HVAC systems, and how do they convert?

Water flow rate in HVAC systems is commonly expressed in gallons per minute (GPM), liters per second (L/s), or cubic meters per hour (m³/h). To convert between these units, engineers can use the following conversion factors: 1 GPM ≈ 0.063 L/s ≈ 0.227 m³/h. Accurate unit conversions are essential to ensure correct calculations and system design.