A ceiling fan is the cheapest way to stay comfortable in a Tamil Nadu summer, and the easiest appliance to buy wrong. Four numbers decide almost everything.

1. Sweep size must match the room, not the ceiling

1200 mm (48 inch) is the Indian default and suits most bedrooms of 10×10 to 12×12 ft. For a 12×15 ft living room go to 1400 mm; for anything smaller than 8×8 ft, a 900 mm fan moves less air but does not overpower the space. An oversized fan in a small room feels draughty; an undersized fan in a large room just spins.

2. Air delivery (m³/min) is the number that actually cools

Two fans with the same sweep can differ by 30% in air delivery. Look for 200 m³/min or more for a 1200 mm fan. Sweep tells you the blade diameter; air delivery tells you what reaches your skin.

3. Room height decides the downrod

Ceiling fans need roughly 2.3–2.6 m of clearance from the floor. If your ceiling is higher, ask for a longer downrod; if it is lower, do not buy a fan with a bulky motor housing.

4. BEE star rating: worth the extra money?

A 5-star fan typically uses around 45–50 W against 70–75 W for a 1-star. Running five hours a day, the difference is a few hundred rupees a year per fan — small per fan, meaningful across a whole house. BLDC fans go further, drawing about 28 W, and are worth it where fans run all night.

5. What we check before a fan reaches our shelf

• Copper winding, not aluminium
• Genuine brand warranty card and serial number
• Both blades and the downrod set present in the box
• Remote, if the model is a remote model, tested before dispatch

Still unsure? Send us your room size and ceiling height on WhatsApp at +91 98424 29888 and we will tell you the sweep and model that fits.