HVAC Residential Load Calcs HD
Carmel Software Corporation
About this app
- Age 10
- Updated Mar 27, 2025
- OS IOS
Editor reviews
HVAC Residential Load Calcs HD is a professional HVAC load calculation tool for contractors, technicians, and energy auditors. It helps you size residential heating and cooling systems quickly and confidently on site using proven industry practices.
Core features:
- Room-by-room and whole-house load calculations with clear BTU and tonnage results
- Flexible building inputs including orientation, insulation levels, windows and shading, infiltration, and ventilation
- Instant summaries and shareable reports to support proposals, permitting, and client communication
Why it stands out:
- Field-ready workflow that speeds up estimating and eliminates spreadsheet errors
- Clear, visual breakdowns that make it easy to validate assumptions and right-size equipment
- Built for productivity and business use with consistent, repeatable results and time savings
Great for: HVAC contractors, design-build teams, energy auditors, and anyone who needs fast, accurate residential HVAC sizing. Keywords: HVAC load calculator, residential sizing, BTU calculator, Manual J style, jobsite estimating, productivity
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How to use:
1. Install and open the app, then create a new project with the property address and climate location.
2. Add rooms or zones, entering basic dimensions and construction details like wall and roof insulation, window type, and orientation.
3. Set design conditions including outdoor design temperatures, indoor setpoints, infiltration, ventilation, and internal gains.
4. Review calculated loads by room and total; adjust inputs to reflect actual site conditions and confirm right-sized equipment tonnage.
5. Generate and share a summary report, then save the project or reuse templates for future jobs.