What is the ideal window size for a south-west-facing pooja room in Delhi?

Vastu and composite climate together suggest a window approximately 3 feet wide with a sill height of 3.5 feet on a south-west face for a pooja room in Delhi. Type: Fixed + Vent (top hopper). Glazing: clear.

Is South-West an auspicious direction for a pooja room per Vastu?

Vastu's traditional ideal for a pooja room is NE, not South-West. The room remains habitable with simple window-design choices that neutralise the directional bias — see the recommendations on this page.

Why does Delhi's composite climate need clear glazing?

Delhi sits in the Composite climate zone (Hot summers, cold winters, monsoon — the climate where classical Vastu was calibrated.). For composite climates, clear glazing balances solar gain, heat retention, and visibility — Operable windows matter more than fixed ones. The same opening that bleeds heat in January welcomes it back in July.

Window Guide · Delhi

South-West-facing Pooja Room

South-West is not the traditional Vastu placement for a pooja room, but the room remains usable. Window design + simple remedies neutralise the directional bias.

CompositeDelhiNairritya · Prithvi (Earth)Vastu: avoid

The recommendation

Width

~91 cm

Sill Height

3.5'

high sill — measured from finished floor

Type

Fixed + Vent (top hopper)

Glazing

clear

Single 6 mm

Overhang / chajja

Minimum projection above the window

WWR

15–20%

Total window-to-wall ratio for the room

These figures are advisory — drawn from IS 3792 (Composite zone) and Vastu Shastra teaching tradition. An architect should adapt them to your plot's exact bearing, plinth height and facade design.

Why this direction for a pooja room?

A pooja room window's job is to bring morning light to the deity at dawn — small, high-sill, and on the NE wall ideally. The window should never face directly at the deity but rather light the side wall, creating soft fill light during morning aarti.

Nairrityaनैर्ऋत्य

Stillness and stability. Master suite, heavy storage, the home's grounding corner.

Vastu's ideal placement for a pooja room is NE. South-West is outside the traditional band, though with simple remedies the room works well.

Why Delhi's climate matters

Delhi is in the Composite climate zone (Cwa, Cfa per the Köppen scale; Composite per NBC 2016). Summer temperatures: 35-48°C, winters: 2-15°C. Rainfall: 500-1200 mm/year. Humidity: 20-90% (seasonal).

Operable windows matter more than fixed ones. The same opening that bleeds heat in January welcomes it back in July.

For a south-west face in this climate, the recommendation is a fixed + vent (top hopper) window with clear glazing and a sill at 3.5' — calibrated for hot summers, cold winters, and seasonal monsoon.

Common mistakes

Pooja shelf placed against a toilet's plumbing wall
No window — reliance on artificial light only
Windows opening onto a common-area corridor instead of fresh air
Treating South-West placement as a hard error — it's not. The room remains usable; a small Vastu remedy (heavy furniture on the NE wall, mirror placement away from the bed) handles the directional refinement.