Constant vs. Variable Volume Comparison Calculator

Compare energy consumption and costs between CAV and VAV systems.

Total system design airflow.
CFM
Design static pressure.
in w.c.
Hours per year system operates.
hrs/year
Cost per kWh.
$/kWh

Results

CAV Annual Energy-kWh/year
VAV Annual Energy-kWh/year
Annual Cost Savings-$/year
References: ASHRAE Handbook - HVAC Systems and Equipment, Chapter 41 (Air Distribution Systems)