Programmatic Vastu × IS 3792 Reference
Window Vastu + Climate Guide
Window size, sill height, glazing and type for every Indian city, every compass direction, every room — calibrated to Vastu Shastra (Manasara, Mayamatam) and IS 3792 climate zones.
Browse by city
Each city is mapped to one of seven IS 3792 climate zones — that resolves whether your windows want to fight the heat (Hot-Dry), bleed it out via cross-ventilation (Warm-Humid), or harvest winter sun (Cold). Pick your city to start.
76 more cities resolve via direct URL (e.g. /tools/window-guide/jodhpur/north/master-bedroom).
Browse by direction
Vastu maps each compass direction to a presiding deity and a fundamental element. The deity determines what the direction is good for — not just structurally, but in terms of how the home feels.
Browse by room
Each room has its own ideal Vastu placement and its own window job. A pooja-room window wants morning light on a deity; a kitchen window wants exhaust over a cooktop; a master-bedroom window wants cross-ventilation without an early-sun alarm. The recommendations honour all three.