Overview
Manual S bridges the gap between your load calculation results and actual equipment selection. We match manufacturer-specific equipment performance data—at your local design conditions—to your Manual J loads, ensuring the selected system meets but doesn't significantly exceed actual requirements. This prevents the chronic oversizing that plagues the industry.
Why It Matters
Equipment catalogs list nominal capacity, but actual performance varies with outdoor temperature, indoor conditions, and airflow. Manual S ensures you select equipment based on real-world expanded performance data—not just nameplate tonnage.
Our Process
Review completed Manual J heating and cooling loads
Research manufacturer expanded performance data
Match equipment capacity to loads at design conditions
Document selection with performance verification
What You'll Receive
- Equipment selection recommendations
- Capacity verification
- Performance documentation
Ideal For
- •Equipment replacement projects
- •New construction system selection
- •Heat pump and dual-fuel system sizing
- •High-efficiency system upgrades
Get HVAC Design You Can Build With Confidence.
Upload your plans or request a quote. We'll handle the engineering.