Available HVAC & Critical Control Engineering Calculators
Select an interactive tool below to run field calculations built on strict ASHRAE, NFPA, and IBC standards.
Airlock Leakage Flow Calculator
Calculate exfiltration airflow through door clearances using the ASHRAE sharp-edge orifice derivation to verify cleanroom pressure cascades.
Refrigerant Charge & P-h Analyzer
Interactive superheat/subcooling charging advisor with live P-h cycle diagrams and bubble/dew tracking for R-22, R-134a, R-410A, R-32, R-454B & R-1234yf.
Chilled Water Buffer Tank Sizer
Determine accurate fluid volumes for primary-secondary networks to minimize compressor short-cycling and protect plant equipment.
HVAC CAPEX & OPEX Estimator
Generate plant equipment cost metrics, evaluating performance variations between full-fresh-air and recirculating AHU plant models.
Smoke Ventilation & Fire Dynamics Sizer
Evaluate enclosure geometry, fuel hazard models, and plume temperatures to compute mechanical extraction capacities and natural buoyant venting areas.