eSHGC calculator
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About this app
eSHGC Calculator is a professional tool for checking window compliance under India's Energy Conservation Building Code (ECBC) 2017.
Designed for architects, building engineers, and energy consultants, the app calculates the Equivalent Solar Heat Gain Coefficient (Eq. SHGC) for every window in a building — instantly telling you whether each window passes or fails the ECBC 2017 compliance threshold of 0.27.
KEY FEATURES
✔ Instant Compliance Check
Enter window dimensions, orientation, and shading type. The app calculates the Projection Factor (PF), looks up the Shading
Equivalent Factor (SEF) from ECBC Tables 4-12 and 4-13, and shows PASS or FAIL in real time.
✔ All 8 Orientations Supported
North, South, East, West, Northeast, Southeast, Southwest, Northwest — with dedicated tabs for each direction.
✔ Shading Types
Overhang, Overhang + Side Fins, Side Fins, and None — all supported with correct SEF lookup.
✔ Project Management
Save and manage multiple building projects. Switch between projects from any screen. All data stored locally on your device — no login, no cloud required.
✔ Export Reports
Export PDF and Excel reports for each project. Export all projects as a single ZIP archive. Share directly from the app using the native share sheet.
✔ ECBC Reference Tables
View the full ECBC 2017 SEF lookup tables (Table 4-12 and 4-13) in-app. The relevant cell is highlighted automatically based on your window's PF and direction.
✔ Works Offline
All calculations, glass data, and ECBC tables are bundled in the app. No internet connection required.
WHO IS THIS FOR?
- Architects preparing energy compliance documentation
- Building engineers verifying fenestration specifications
- Energy auditors and consultants
- Students learning ECBC 2017 compliance
ABOUT ECBC 2017
The Energy Conservation Building Code 2017 mandates that the Equivalent SHGC of all windows must not exceed 0.27 (Section 4.3.3). This app implements the exact methodology from ECBC 2017 Tables 4-12 and 4-13, covering both sites at latitude ≥ 15°N and < 15°N.
Download eSHGC Calculator and make fenestration compliance fast, accurate, and paperless.
Designed for architects, building engineers, and energy consultants, the app calculates the Equivalent Solar Heat Gain Coefficient (Eq. SHGC) for every window in a building — instantly telling you whether each window passes or fails the ECBC 2017 compliance threshold of 0.27.
KEY FEATURES
✔ Instant Compliance Check
Enter window dimensions, orientation, and shading type. The app calculates the Projection Factor (PF), looks up the Shading
Equivalent Factor (SEF) from ECBC Tables 4-12 and 4-13, and shows PASS or FAIL in real time.
✔ All 8 Orientations Supported
North, South, East, West, Northeast, Southeast, Southwest, Northwest — with dedicated tabs for each direction.
✔ Shading Types
Overhang, Overhang + Side Fins, Side Fins, and None — all supported with correct SEF lookup.
✔ Project Management
Save and manage multiple building projects. Switch between projects from any screen. All data stored locally on your device — no login, no cloud required.
✔ Export Reports
Export PDF and Excel reports for each project. Export all projects as a single ZIP archive. Share directly from the app using the native share sheet.
✔ ECBC Reference Tables
View the full ECBC 2017 SEF lookup tables (Table 4-12 and 4-13) in-app. The relevant cell is highlighted automatically based on your window's PF and direction.
✔ Works Offline
All calculations, glass data, and ECBC tables are bundled in the app. No internet connection required.
WHO IS THIS FOR?
- Architects preparing energy compliance documentation
- Building engineers verifying fenestration specifications
- Energy auditors and consultants
- Students learning ECBC 2017 compliance
ABOUT ECBC 2017
The Energy Conservation Building Code 2017 mandates that the Equivalent SHGC of all windows must not exceed 0.27 (Section 4.3.3). This app implements the exact methodology from ECBC 2017 Tables 4-12 and 4-13, covering both sites at latitude ≥ 15°N and < 15°N.
Download eSHGC Calculator and make fenestration compliance fast, accurate, and paperless.
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What’s new
Climate zone selector with ECBC 2017 compliance
• ECBC+ and Super ECBC compliance columns
• Glass picker with manufacturer library
• Duplicate and rename projects
• Improved project summary with area-weighted SHGC
• ECBC+ and Super ECBC compliance columns
• Glass picker with manufacturer library
• Duplicate and rename projects
• Improved project summary with area-weighted SHGC
