HVAC Tools
Heating, ventilation & air conditioning engineering calculators
1 available · 4 coming soon
Cooling Load Calculator
Estimate building cooling loads using CLTD/ASHRAE methodology. Accounts for walls, roof, glass, occupancy, lighting, and ventilation contributions.
CLTD · ASHRAE · TETDOpen Tool →
Duct Sizing
Size supply and return air ducts using equal friction or velocity methods. Supports rectangular and circular duct geometries.
Equal Friction · Velocity MethodComing soon
Pipe Sizing
Determine chilled water and condenser water pipe dimensions based on flow rate, fluid type, and allowable velocity.
Darcy-Weisbach · Hazen-WilliamsComing soon
Psychrometric Calculator
Calculate moist air thermodynamic properties at any state point. Supports dry bulb, wet bulb, relative humidity, and dew point inputs.
ASHRAE RP-1485 · SI & ImperialComing soon
Chiller Performance
Evaluate chiller COP, power consumption, and annual energy cost based on capacity and operating profile.
ASHRAE 90.1 · IPLV · NPLVComing soon