QuickCalcs-HVAC.xlsm offers a lot of quick and easy ways to perform everyday HVAC calculations.  Such as:
   * Feet & Inches (Addition, Subtraction, and Multiplication)
   * Mixed-Air Temperature Calc.
   * Interpolation, Unit Conversions
   * Duct & Louver Sizing
   * Pump Laws and Fan Laws
   * and many more...
QuickCalcs-HVAC.xlsm is FREE.  However, you will not be able to save or print and it expires every year.  Get the Full Version (M1-QuickCalcs-HVAC.xlsm) for only $35.  See CalcSheet Page for more information.