What is the ideal window size for a east-facing study room in Delhi?

Vastu and composite climate together suggest a window approximately 4.5 feet wide with a sill height of 2.5 feet on a east face for a study room in Delhi. Type: Sliding 2T. Glazing: clear.

Is East an auspicious direction for a study room per Vastu?

East is an acceptable secondary placement for a study room. The traditional ideal is W, NW, but the room remains usable in East with the standard window choices.

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

East-facing Study Room

East is an acceptable secondary Vastu placement for a study room. Window design tunes to Delhi's composite climate.

CompositeDelhiIndra · Vayu (Air)

The recommendation

Width

4.5'

~137 cm

Sill Height

2.5'

mid sill — measured from finished floor

Type

Sliding 2T

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 study room?

A study window should put light over the desk shoulder (not into the eyes), support video-call ambient light, and crucially provide the option to look up and rest the eyes on a distant view — no view = eye-strain.

Indraइन्द्र

Sunrise direction. Social connections, energy, beginnings.

Vastu's ideal placement for a study room is W, NW. East is an acceptable secondary band.

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 east face in this climate, the recommendation is a sliding 2t window with clear glazing and a sill at 2.5' — calibrated for hot summers, cold winters, and seasonal monsoon.

Common mistakes

Desk facing the window — glare on the screen all afternoon
Desk back-to-window — strong backlight on video calls
No natural light at all — psychological fatigue