AC Buying Guide India 2024: Everything You Need to Know
Buying an AC in India can be overwhelming — dozens of brands, confusing star ratings, and too many technical specs. This research-backed guide breaks it all down in plain language so you can make the right choice for your budget and room size. Built for Indian buyers, no sponsored content.
1. What Tonnage Do You Need?
AC capacity is measured in tons (TR). A higher tonnage means more cooling power. Choosing the wrong tonnage is the most common mistake — too small and your AC will run non-stop without cooling properly; too large and it will short-cycle, wasting electricity and reducing dehumidification.
| Room Size | Recommended Tonnage |
|---|---|
| Up to 100 sq ft | 0.75 – 1 Ton |
| 100 – 150 sq ft | 1 – 1.5 Ton |
| 150 – 200 sq ft | 1.5 Ton |
| 200 – 300 sq ft | 1.5 – 2 Ton |
| Above 300 sq ft | 2 Ton or more |
Note: Add 0.5 ton if the room gets direct afternoon sunlight or has high ceilings (above 10 ft).
2. Inverter vs Non-Inverter
An inverter AC has a variable-speed compressor that adjusts its output based on the room temperature. This makes it significantly more energy-efficient — consuming up to 30–50% less electricity compared to a fixed-speed (non-inverter) model. The higher upfront cost is usually recovered within 2 years through lower electricity bills. For most buyers in 2024, we recommend spending the extra ₹3,000–5,000 to go with an inverter model.
3. Star Ratings Explained
BEE (Bureau of Energy Efficiency) assigns star ratings from 1 to 5. A 5-star AC is the most energy efficient — it uses less electricity to cool the same space compared to a 3-star model. The difference in annual electricity cost between a 3-star and 5-star 1.5 ton inverter AC can be ₹2,000–4,000 per year. If you run your AC for more than 8 hours a day, a 5-star model will pay for itself quickly.
4. Split AC vs Window AC
Split ACs are the most popular type in India — the compressor unit sits outside, making them quieter and more aesthetically pleasing. Window ACs are a single unit that fits in a window frame — cheaper to buy and install, but noisier and less efficient. For most modern apartments, a split AC is the better choice. Window ACs work well for rental properties or where a split installation is not feasible.
5. Installation Cost in India
Standard split AC installation costs ₹1,500–₹3,000 for a basic setup — this includes mounting the indoor and outdoor units, copper piping (up to 3 metres), and electrical connections. Additional copper pipe beyond 3 metres costs ₹300–500 per metre. Always use an authorised brand technician for installation to avoid voiding your warranty.