1 ton or 1.5 ton AC: which suits your room?

Rule of thumb by room size

• Up to about 120 sq ft: 1 ton.
• About 120 to 180 sq ft: 1.5 ton.
• About 180 to 250 sq ft: 2 ton.
• Larger rooms, halls and shops: 2 ton or more, or more than one unit.

Go one size up if

• The room is on the top floor or has a roof directly above it.
• It has big windows facing the afternoon sun.
• Many people use the room, or it has heat-producing appliances.

Installation matters too

A correctly sized AC still cools badly if the pipe run is too long or the unit is poorly placed. We install split and window ACs from ₹1,200 and can advise on size and placement before you buy. These are guides, not exact calculations, so ask a technician if the room is unusual.