We provide professional Manual J heating and cooling load calculations to ensure your HVAC systems are accurately sized for maximum efficiency and occupant comfort. Manual J is the industry-standard method for determining residential and light commercial building load requirements, and we perform these calculations with precision and care to support your projects.

What is Manual J?

Manual J is a calculation procedure developed by the Air Conditioning Contractors of America (ACCA) to determine the precise heating and cooling loads of a building. It accounts for various factors such as building orientation, insulation levels, window sizes, climate zone, and occupancy to size HVAC systems correctly.

Undersized systems will not maintain desired temperatures, while oversized systems can cause short cycling, humidity issues, and increased operational costs. Accurate Manual J calculations are essential to designing systems that deliver comfort and efficiency without energy waste.

Our Heating and Cooling Load Services Include:

• Comprehensive Manual J Calculations
  Detailed room-by-room heating and cooling load calculations tailored to your building specifications and climate zone.
• Manual D Duct Design Analysis
  Design and analysis of duct systems to ensure efficient air distribution and balanced comfort throughout the building.
• Manual S Equipment Selection
  Proper HVAC equipment selection based on Manual J and D results to maximize performance and lifespan.
• Existing Building Load Analysis
  Evaluation of current systems and building loads for retrofits, replacements, or system upgrades.
• Report Documentation & Support
  Clear, comprehensive reports with all necessary data and recommendations for permitting, design, and installation.