Air Cooler Electricity Consumption & Running Costs in India
Evaporative air coolers are the most cost-effective summer cooling solution in dry regions of India (Delhi, Rajasthan, UP, MP, Punjab, Gujarat). Unlike air conditioners that use power-heavy compressors, air coolers rely on a low-wattage water pump (15W–25W) and an axial fan or centrifugal blower (100W–200W).
Air Cooler Power Consumption by Type (BIS IS 3315 Standards)
| Cooler Type | Ideal Room Size | Motor Wattage | Units / Day (10 hrs) | Monthly Cost (₹7.5/unit) |
|---|---|---|---|---|
| Personal Cooler | Small Room (<120 sq ft) | 120W – 150W | 1.2 – 1.5 Units | ₹270 – ₹338 / mo |
| Tower Cooler | Medium Room (120–200 sq ft) | 160W – 190W | 1.6 – 1.9 Units | ₹360 – ₹428 / mo |
| Desert Cooler | Large Hall (>250 sq ft) | 200W – 250W | 2.0 – 2.5 Units | ₹450 – ₹563 / mo |
| 1.5 Ton 3-Star AC (Comparison) | 150 sq ft Bedroom | 1,250W Avg | 10.0 – 12.5 Units | ₹2,250 – ₹2,813 / mo |