AC Power Consumption Chart IndiaUnits, Cost & Guide 2026
See how much electricity different ACs consume per hour and per month with this easy-to-understand chart. All data is based on real-world measurements from Indian homes.
Reviewed by Sulaiman Sekh
HVAC Technician · 8+ Years · 200+ Installations
Quick Answer
A 1.5 ton AC typically consumes around 1.2 to 1.8 units per hour depending on efficiency and usage conditions. Inverter ACs consume 30–40% less electricity compared to non-inverter models because they vary compressor speed instead of cycling on and off.
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AC Power Consumption Chart (India 2026)
This is the most comprehensive AC power consumption chart for Indian homes. All figures are measured from real installations, not manufacturer lab ratings. Costs assume ₹10 per unit.
| AC Type | Units/Hour | Units/Day (6h) | Units/Day (8h) | Units/Month (6h) | Units/Month (8h) | Cost/Month (8h) |
|---|---|---|---|---|---|---|
| 1 Ton Non-Inverter (3-Star) | 0.9 – 1.3 | 5.4 – 7.8 | 7.2 – 10.4 | 162 – 234 | 216 – 312 | ₹2,160 – ₹3,120 |
| 1 Ton Inverter (3-Star) | 0.6 – 0.9 | 3.6 – 5.4 | 4.8 – 7.2 | 108 – 162 | 144 – 216 | ₹1,440 – ₹2,160 |
| 1 Ton Inverter (5-Star) | 0.5 – 0.7 | 3.0 – 4.2 | 4.0 – 5.6 | 90 – 126 | 120 – 168 | ₹1,200 – ₹1,680 |
| 1.5 Ton Non-Inverter (3-Star) | 1.3 – 1.8 | 7.8 – 10.8 | 10.4 – 14.4 | 234 – 324 | 312 – 432 | ₹3,120 – ₹4,320 |
| 1.5 Ton Inverter (3-Star) | 1.0 – 1.4 | 6.0 – 8.4 | 8.0 – 11.2 | 180 – 252 | 240 – 336 | ₹2,400 – ₹3,360 |
| 1.5 Ton Inverter (5-Star) | 0.8 – 1.1 | 4.8 – 6.6 | 6.4 – 8.8 | 144 – 198 | 192 – 264 | ₹1,920 – ₹2,640 |
| 2 Ton Non-Inverter (3-Star) | 1.7 – 2.5 | 10.2 – 15.0 | 13.6 – 20.0 | 306 – 450 | 408 – 600 | ₹4,080 – ₹6,000 |
| 2 Ton Inverter (3-Star) | 1.3 – 1.8 | 7.8 – 10.8 | 10.4 – 14.4 | 234 – 324 | 312 – 432 | ₹3,120 – ₹4,320 |
| 2 Ton Inverter (5-Star) | 1.0 – 1.4 | 6.0 – 8.4 | 8.0 – 11.2 | 180 – 252 | 240 – 336 | ₹2,400 – ₹3,360 |
| Window AC (1.5 Ton, 3-Star) | 1.5 – 2.0 | 9.0 – 12.0 | 12.0 – 16.0 | 270 – 360 | 360 – 480 | ₹3,600 – ₹4,800 |
| Window AC (1.5 Ton, 5-Star) | 1.2 – 1.5 | 7.2 – 9.0 | 9.6 – 12.0 | 216 – 270 | 288 – 360 | ₹2,880 – ₹3,600 |
Note: Figures are for peak summer months (May–July). In milder months (March, October), consumption drops by 20–30%. Inverter ACs reach lower end of range after initial room cooldown.
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Electricity Cost Based on Units
Convert your AC unit consumption into real money. Multiply units by your local electricity rate. Below is the cost at ₹10 per unit for 8 hours daily usage, plus yearly projections.
| AC Type | Monthly Cost | Yearly Cost (7 months) | Savings vs Non-Inverter |
|---|---|---|---|
| 1 Ton Non-Inverter | ₹1,440 – ₹2,400 | ₹10,080 – ₹16,800 | ₹2,400 – ₹4,800 |
| 1 Ton Inverter (3-Star) | ₹1,440 – ₹2,160 | ₹10,080 – ₹15,120 | — |
| 1 Ton Inverter (5-Star) | ₹960 – ₹1,680 | ₹6,720 – ₹11,760 | Save extra ₹2,880 – ₹4,320 |
| 1.5 Ton Non-Inverter | ₹3,120 – ₹4,320 | ₹21,840 – ₹30,240 | ₹4,320 – ₹9,600 |
| 1.5 Ton Inverter (3-Star) | ₹2,400 – ₹3,360 | ₹16,800 – ₹23,520 | — |
| 1.5 Ton Inverter (5-Star) | ₹1,920 – ₹2,640 | ₹13,440 – ₹18,480 | Save extra ₹4,320 – ₹7,200 |
| 2 Ton Non-Inverter | ₹4,080 – ₹6,000 | ₹28,560 – ₹42,000 | ₹5,760 – ₹12,000 |
| 2 Ton Inverter (3-Star) | ₹3,120 – ₹4,320 | ₹21,840 – ₹30,240 | — |
| 2 Ton Inverter (5-Star) | ₹2,400 – ₹3,360 | ₹16,800 – ₹23,520 | Save extra ₹5,040 – ₹8,640 |
How to Calculate Your AC Cost
Step 1: Find Units
Check the chart above for your AC type. Look at the "Units/Hour" column.
Step 2: Multiply by Rate
Multiply units by your electricity rate (₹6–₹12 per unit depending on city).
Step 3: Multiply by Hours
Multiply by daily hours × 30 days for monthly cost. Use our calculator for precision.
Factors Affecting AC Power Consumption
Understanding these six factors helps you predict and control your AC electricity usage more accurately.
Star Rating
A 5-star AC uses 15–25% less electricity than a 3-star model. The Bureau of Energy Efficiency (BEE) star rating directly reflects power efficiency. Over 5 years, a 5-star AC can save ₹20,000–₹35,000 in electricity compared to a 3-star unit.
Inverter vs Non-Inverter
Inverter ACs consume 30–40% less power than non-inverter models. Non-inverter ACs cycle the compressor on and off at full power. Inverter ACs adjust compressor speed smoothly, maintaining temperature without energy spikes.
Room Size
An oversized AC wastes energy through short cycling. An undersized one runs constantly at full load. Match tonnage correctly: 1 ton for up to 120 sq ft, 1.5 ton for 120–180 sq ft, and 2 ton for 180–250 sq ft.
Ambient Temperature
When outdoor temperature exceeds 40°C, all ACs work harder and consume 10–20% more power. Inverter ACs handle this better by increasing compressor speed gradually rather than running at fixed high load.
Room Insulation
Poor insulation lets cool air escape and hot air enter, increasing compressor load by 15–25%. Sealed windows, insulated walls, and closed doors reduce consumption significantly during peak summer.
Number of People
Each additional person in a room adds approximately 100W of heat load. A room with 4–5 people needs a slightly higher tonnage or the AC will consume more power trying to maintain the set temperature.
AC power consumption depends on capacity, daily usage hours, and energy efficiency. A 1.5 ton AC uses 1.2 to 1.8 units per hour in typical Indian conditions.
Inverter ACs with higher BEE star ratings consume significantly less electricity over time. Choosing a 5-star inverter model can reduce monthly consumption by 40–50% compared to a basic non-inverter AC.
“A 1.5 ton AC uses about 1.5 units of electricity per hour on average. A 1 ton AC uses about 1 unit per hour, and a 2 ton AC uses about 2 units per hour. Inverter models use 30 to 40 percent less.”
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Frequently Asked Questions
Common questions about AC power consumption, unit usage, and how to calculate electricity consumption.
A 1.5 ton AC consumes 1.2 to 1.8 units per hour depending on its type and star rating. A 1.5 ton non-inverter AC uses 1.3–1.8 units/hour, while a 1.5 ton inverter AC uses 1.0–1.4 units/hour. A 5-star inverter model uses as little as 0.8–1.1 units/hour.
Reviewed by Sulaiman Sekh
Sulaiman is a certified HVAC technician with 8+ years of field experience across West Bengal and Maharashtra. He has measured actual power consumption on over 200 installed AC units using clamp meters and smart plugs. All data on this chart reflects real-world usage, not manufacturer lab conditions. Last reviewed: May 2026.
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