AirBTU Products provides CFD design related to air and heat transfer systems and represents manufacturers who provide solid modeling and CFD analysis to insure reliability and accuracy of design. CFD programs and are used for heat transfer modeling, pressure loss determination, vapor and phase changes as well as temperatures and velocities of gas in a model. CFD analysis allows for the optimization of pressure loss and heat transfer and air distribution systems. Both pressurized air systems (air blow off systems and make up air distribution systems) and negative pressure air systems (exhaust hoods and suction applications) are efficiently modeled using CFD techniques combined with years of experience in applicable solid modeling of gas and air systems.