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Summer in India is no joke. With temperatures in Tamil Nadu and across the Deccan regularly crossing 42°C, a good air conditioner is not a luxury — it is essential. Many buyers start their search by looking for the Foot Care, but choosing the right AC involves more than just picking the cheapest option. But walk into any appliance store and you are immediately hit with a wall of specs: inverter vs non-inverter, 1-ton vs 2-ton, 3-star vs 5-star, split vs window.
This guide cuts through all of that so you can make a confident, money-smart decision. Whether you are buying your first AC or upgrading an old one, this is everything you need to know before spending a single rupee.
1. First: What Room Size Do You Have?
The single most important factor when buying an AC is cooling capacity, measured in tons (TR). Get this wrong, and you will either have an underpowered unit struggling to cool your room, or an oversized unit cycling on and off constantly — both wasteful and bad for the machine.
Here is a quick reference guide. These are baseline figures for rooms with standard 10-foot ceilings and moderate sun exposure. Add half a ton if your room gets strong direct sunlight all afternoon, or if more than 4 people regularly occupy the space.
| Room Size | Tonnage | Typical Use | Fit |
| Up to 130 sq ft | 0.8 – 1 Ton | Small bedroom, study | ✓ Ideal |
| 130 – 180 sq ft | 1 – 1.5 Ton | Standard bedroom | ✓ Ideal |
| 180 – 250 sq ft | 1.5 Ton | Master bedroom, medium living room | ✓ Common |
| 250 – 350 sq ft | 1.5 – 2 Ton | Large living room, hall | ✓ Common |
| 350+ sq ft | 2 Ton or above | Large halls, open-plan spaces | ⚠ Consult Expert |
