Use this HVAC System Capacity Calculator to estimate the sensible, latent, and total cooling capacity currently being delivered by a system. Enter the measured system airflow, jobsite elevation, and entering and leaving dry-bulb and wet-bulb temperatures.<\/p>\n\n\n\n
The calculator uses psychrometric relationships to determine changes in air temperature, moisture content, and enthalpy across the indoor coil. Results include sensible capacity, latent capacity, total capacity, sensible heat ratio, and equivalent cooling tonnage.<\/p>\n\n\n\n
Outdoor ambient temperature is not required to calculate the system\u2019s measured airside capacity. However, outdoor conditions should be recorded separately when comparing the calculated capacity with the manufacturer\u2019s published performance data.<\/p>\n\n\n\n
For reliable results, allow the system to stabilize before collecting measurements. Use properly calibrated instruments, measure dry-bulb and wet-bulb temperatures at the same entering and leaving air locations, and enter measured airflow rather than nominal equipment airflow. Calculated values are diagnostic estimates and should be evaluated with the applicable product data and service literature.<\/p>\n\n\n