All Services Engineering & Architecture HVAC Design Engineer $8/hr · Starting at $25 HVAC Heat / Cooling Load Calculation. Ventilation Calculations using ASHRAE 62.1 Ducting and Piping layout. Schematic riser diagram. About $8/hr · Ongoing Download Resume HVAC Heat / Cooling Load Calculation. Ventilation Calculations using ASHRAE 62.1 Ducting and Piping layout. Schematic riser diagram. Skills & Expertise DesignEngineeringHVAC System DesignLayout DesignProcess Piping Design 0 Reviews This Freelancer has not received any feedback. Browse Similar Freelance Experts HVAC System DesignersDesignersEngineersLayout DesignersProcess Piping Designers