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Heat gain — Windows
Heat gain step 3 — all window inputs on one screen.
- Optional. Leave every field blank for no windows; cooling load still calculates from walls, roof, floor, and other gains.
- Cardinal glass (N/S/E/W): area + glazing for conduction and solar.
- Diagonal glass (NE+NW, SE+SW): extra solar path for corner / angled windows.
- Blank or zero areas contribute no window conduction or solar.
Disclaimer: Simplified residential estimate — not full Manual J / ACCA certification.