
HVAC System Sizing & Duct Design
An efficiently designed HVAC system is essential for maintaining indoor comfort, controlling energy costs, and complying with building codes. At Norex Engineering, we offer professional HVAC system design services that include precise load calculations, equipment sizing, and optimized duct layouts for both residential and commercial buildings.
Our team begins with Manual J load calculations to assess the unique heating and cooling demands of your space based on building orientation, insulation values, window performance, and occupancy. This allows us to select the right equipment size—avoiding the pitfalls of overor under-sizing, which can lead to higher energy bills, inconsistent temperatures, or premature equipment wear
We then design ductwork layouts using Manual D methodology to ensure balanced air distribution, proper static pressure, and minimal energy loss. Designs are tailored for your building’s layout and ceiling constraints, while meeting IECC energy efficiency requirements and mechanical code standards.
Our HVAC design services support:
New home builds and remodels
Commercial tenant improvements Multifamily housing developments
Energy-efficient retrofits
Permitting and code compliance documentation
With Norex Engineering, you receive a system that performs efficiently, keeps occupants comfortable, and meets the exact standards required for inspection and long-term performance.