1.5 Ton AC Power ConsumptionUnits Per Hour & Monthly Bill 2026
A 1.5 ton AC consumes 1.2 to 1.8 units per hour depending on star rating and type. See the exact units, monthly cost, and bill estimates for inverter and non-inverter models.
Reviewed by Sulaiman Sekh
HVAC Technician · 8+ Years · 200+ Installations
Quick Answer
A 1.5 ton AC consumes 1.2 to 1.8 units per hour depending on the type and star rating. A 1.5 ton inverter AC uses 1.0–1.4 units/hour, while a non-inverter model uses 1.3–1.8 units/hour. At ₹10 per unit and 8 hours daily use, the monthly electricity bill ranges from ₹2,400 to ₹4,320.
1.5 ton AC uses 1.2–1.8 units/hour
Non-inverter models use 1.3–1.8 units/hour. Inverter models use 1.0–1.4 units/hour. 5-star inverter models drop to 0.8–1.1 units/hour.
Monthly bill: ₹2,400–₹4,320 at 8 hrs/day
A 5-star inverter costs ₹2,400–₹2,880/month. A 3-star non-inverter costs ₹3,360–₹3,840/month at ₹10/unit tariff.
Inverter saves ₹960–₹1,440 per month
30–40% lower consumption vs non-inverter. Over a 6-month season, savings total ₹5,760–₹8,640 — recovering the price premium in 1.5–2 years.
Power draw: 1,300–1,600W running
Inverter models throttle down to 400–600W once cooled. Non-inverters stay at 1,300–1,600W continuously, wasting power during stable temperatures.
Electrical load requires 15–20A circuit
1.5 ton AC needs a dedicated 15–20 amp circuit. Starting current spikes to 2.5–3 kW for 2–3 seconds. Use a voltage stabilizer rated for at least 4 kVA.
Quick Answer: How Much Power Does a 1.5 Ton AC Use?
A 1.5 ton AC consumes 1.2 to 1.8 units per hour depending on the type and star rating. A 1.5 ton inverter AC uses 1.0–1.4 units/hour, while a non-inverter model uses 1.3–1.8 units/hour. At ₹10 per unit and 8 hours daily use, the monthly electricity bill ranges from ₹2,400 to ₹4,320.
Inverter (5-star)
1.0–1.2 units/hr
Most efficient option
Inverter (3-star)
1.2–1.4 units/hr
Standard inverter
Non-Inverter
1.3–1.8 units/hr
Highest consumption
1.5 Ton AC Power Consumption by Type
Exact units per hour for different 1.5 ton AC configurations. Data based on BEE star ratings and real-world Indian home measurements.
| AC Type | Star Rating | Units/Hour | Daily (8 hrs) | Monthly | Monthly Bill (₹10/unit) |
|---|---|---|---|---|---|
| Inverter | 5-Star | 1.0–1.2 | 8.0–9.6 units | 240–288 units | ₹2,400–₹2,880 |
| Inverter | 3-Star | 1.2–1.4 | 9.6–11.2 units | 288–336 units | ₹2,880–₹3,360 |
| Non-Inverter | 5-Star | 1.2–1.5 | 9.6–12.0 units | 288–360 units | ₹2,880–₹3,600 |
| Non-Inverter | 3-Star | 1.4–1.6 | 11.2–12.8 units | 336–384 units | ₹3,360–₹3,840 |
| Non-Inverter | 2-Star | 1.5–1.8 | 12.0–14.4 units | 360–432 units | ₹3,600–₹4,320 |
Key insight: A 5-star inverter 1.5 ton AC saves approximately 120–144 units per month compared to a 2-star non-inverter model. At ₹10/unit, that is ₹1,200–₹1,440 in monthly savings. Over a 6-month cooling season, the savings amount to ₹7,200–₹8,640 — enough to justify the higher upfront cost within 2–3 years.
1.5 Ton AC Monthly Electricity Bill
Monthly cost breakdown by usage hours and electricity tariff. Based on a 5-star inverter 1.5 ton AC consuming 1.1 units/hour average.
| Daily Use | Monthly Units | ₹6/unit | ₹8/unit | ₹10/unit | ₹12/unit |
|---|---|---|---|---|---|
| 4 hours | 132 units | ₹792 | ₹1,056 | ₹1,320 | ₹1,584 |
| 6 hours | 198 units | ₹1,188 | ₹1,584 | ₹1,980 | ₹2,376 |
| 8 hours | 264 units | ₹1,584 | ₹2,112 | ₹2,640 | ₹3,168 |
| 10 hours | 330 units | ₹1,980 | ₹2,640 | ₹3,300 | ₹3,960 |
| 12 hours | 396 units | ₹2,376 | ₹3,168 | ₹3,960 | ₹4,752 |
Note: These figures are for a 5-star inverter 1.5 ton AC. Non-inverter and lower-star models will cost 25–40% more. For example, a 3-star non-inverter 1.5 ton at 8 hours/day and ₹10/unit costs approximately ₹3,360–₹3,840/month instead of ₹2,640.
Inverter vs Non-Inverter 1.5 Ton AC: Cost Difference
See how much you actually save by choosing an inverter AC over a non-inverter model. Based on 8 hours daily use over 6-month cooling season.
5-Star Inverter 1.5 Ton
3-Star Non-Inverter 1.5 Ton
Yearly Savings with Inverter AC
A 5-star inverter 1.5 ton AC saves ₹5,760–₹5,760 per 6-month season compared to a 3-star non-inverter. Over 5 years of use, the total savings amount to ₹28,800–₹34,560. The upfront price difference of ₹7,000–₹10,000 is recovered within 1.5–2 cooling seasons. After that, every rupee saved is profit.
Related Power Consumption Guides
1.5 Ton AC Power Consumption FAQs
Common questions about 1.5 ton AC electricity usage, units per hour, and monthly bills.
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.
Calculate Your Exact AC Bill
Use our AC bill calculator to find your exact monthly electricity cost. Enter your AC tonnage, star rating, daily usage hours, and local electricity rate.
Frequently Asked Questions
Straight answers to common questions.
How many units does a 1.5 ton AC consume per hour?
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.
What is the monthly electricity bill for 1.5 ton AC?
For 8 hours daily use at ₹10 per unit, a 5-star inverter 1.5 ton AC costs ₹2,400–₹2,880 per month. A 3-star non-inverter model costs ₹3,360–₹3,840 per month. The difference is ₹960–₹1,440 monthly, or ₹5,760–₹8,640 over a 6-month cooling season.
How much does a 1.5 ton AC cost to run per day?
At 8 hours daily use, a 5-star inverter 1.5 ton AC costs ₹80–₹96 per day. A 3-star non-inverter costs ₹112–₹128 per day. The daily cost difference is ₹32–₹48, which adds up to significant savings over a summer.
Does inverter AC use less electricity for 1.5 ton?
Yes. A 1.5 ton inverter AC uses 30–40% less electricity than a non-inverter model. For 8 hours daily use, this saves approximately 96–144 units per month. At ₹10/unit, the monthly savings are ₹960–₹1,440.
What is the power consumption of 1.5 ton split AC?
A 1.5 ton split AC consumes 1.2–1.8 units per hour depending on star rating and inverter technology. Split ACs are generally more efficient than window ACs of the same tonnage because they have better heat exchange and newer compressor technology.
How many watts does a 1.5 ton AC use?
A 1.5 ton AC draws 1,300–1,600 watts when the compressor is running. Inverter models vary compressor speed and may draw as low as 400–600 watts once the room reaches the set temperature. Non-inverter models always run at full power, drawing 1,300–1,600W continuously.
What is the load of 1.5 ton AC?
The electrical load of a 1.5 ton AC is approximately 1.3–1.6 kW. This means you need a 15–20 amp circuit with proper wiring. The starting current can spike to 2.5–3 kW for a few seconds, so your home wiring and stabilizer must handle this.
How to calculate 1.5 ton AC power consumption?
Use the formula: Power (kW) × Hours = Units consumed. For a 1.5 ton inverter AC drawing 1.2 kW: 1.2 kW × 8 hours = 9.6 units per day. Monthly: 9.6 × 30 = 288 units. At ₹10/unit: ₹2,880 per month.
Expert Review by Sulaiman Sekh
HVAC Technician · 8+ Years Experience · Fact-checked & field-tested
We may earn a commission when you purchase through links on this site, at no extra cost to you. This helps us keep our guides free and independently researched.