Manual J / S / D
Professional HVAC Design & Load Calculations
At New Roc Air, we provide Manual J, Manual S, and Manual D calculations to help ensure your HVAC system is properly designed, sized, and balanced for maximum comfort and efficiency.
Whether you are building a new home, replacing an existing system, or applying for permits, our calculations provide the information needed to select the right equipment and ductwork design.
Why Are Manual J, S & D Calculations Important?
• Prevent oversized or undersized equipment
• Improve comfort and indoor air quality
• Increase energy efficiency
• Support permit applications
• Meet current building and energy code requirements
Our Services Include:
• Manual S – Equipment Selection and Sizing
• Manual D – Duct System Design
• Residential and Light Commercial Projects
• Permit and Code Compliance Support
Our Process
Review project plans and building information
Perform detailed load calculations
Select properly sized equipment
Design ductwork for balanced airflow
Deliver professional reports and documentation