How much does a 1.5 ton AC cost per month in India?

A 1.5 ton 3-star AC costs approximately ₹2,520–₹3,600 per month running 8 hours daily, depending on your state electricity rate. A 5-star inverter model costs ₹1,728–₹2,508 per month — saving ₹800–₹1,100 monthly.

How much electricity does a 1.5 ton AC use per month?

A 1.5 ton 5-star inverter AC uses approximately 252–300 units (kWh) per month when run for 8 hours daily. A 3-star model uses 360–400 units per month. At ₹7 per unit, this costs ₹1,764–₹2,800 monthly.

Does inverter AC really save electricity?

Yes. Inverter ACs save 30–50% electricity compared to non-inverter (fixed-speed) models. The variable-speed compressor adjusts output based on room temperature, avoiding the constant on/off cycling that wastes power in fixed-speed units.

What is the best temperature to set AC to save electricity in India?

The Bureau of Energy Efficiency (BEE) recommends 24°C as the default AC temperature. Each degree below 24°C increases electricity consumption by 6–8%. Setting 24°C instead of 18°C can save up to 36% on your monthly AC electricity bill.

Which state has the cheapest electricity rate for AC in India?

As of 2026, Goa, Himachal Pradesh and Uttarakhand have among the lowest residential electricity rates in India (₹3.80–₹5.00 per unit). Maharashtra and Andhra Pradesh have among the highest rates at ₹8.50–₹12.40 per unit for higher consumption slabs.

Is a 5-star AC worth the extra cost in India?

Yes, for most Indian households. A 5-star inverter AC saves ₹800–₹1,200 per month versus a 3-star model. At ₹10,000–₹15,000 higher upfront cost, the payback period is typically 12–18 months, after which you enjoy net savings for the remaining 8–10 year AC lifespan.

What tonnage AC do I need for my room?

For rooms up to 120 sq ft: 1 ton AC. For 120–180 sq ft: 1.5 ton AC. For 180–240 sq ft: 2 ton AC. Adjust upward if the room is on the top floor, faces west, has large windows, or has more than 2 occupants. Use our free AC Tonnage Calculator for a precise recommendation.

How accurate is the AC bill calculator?

Our calculator uses BEE 2026 ISEER data, real state-wise DISCOM tariff slabs, inverter duty-cycle modelling, and outdoor temperature correction factors. This gives approximately 90–97% real-world accuracy — significantly more accurate than basic watt × hours × flat rate calculators.

Which AC is best for Guwahati?

The best AC for Guwahati depends on its Humid Subtropical climate. Top pick: Hitachi RSB518HBEA. Value pick: LG RS-Q18YNZE. Must-have features include: Strong dehumidification; Auto-clean; Dry mode; Copper coil.

What tonnage AC do I need in Guwahati?

Add 15% for tropical humidity For most 120–150 sq ft rooms in Guwahati, a 1.5-ton AC is the standard choice.

How much does it cost to run an AC in Guwahati?

Running a 1.5-ton 5-star inverter AC for 9 hours/day in Guwahati costs approximately ₹1,559/month. A 3-star model costs ₹2,228/month.

Guwahati · Assam · tropical climate

Best AC for Guwahati
2026 Climate Guide

Don't buy the wrong AC for Guwahati's Humid Subtropical climate. Expert picks, must-have features, and real monthly cost estimates at ₹5.5/unit.

Guwahati Climate Guide

Expert Picks 2026

₹5.5/unit rate

36°C peak summer

See Top Picks Calculate Cost in Guwahati

₹5.5

Per Unit

Assam tariff

36°C

Peak Summer

Humid Subtropical

Avg Usage

Daily peak season

₹8,028

Yearly Savings

5★ vs 3★ 1.5T

Guwahati Climate Profile

Guwahati has hot, humid summers with heavy monsoon rainfall. ACs run 8–10 hrs/day in peak season. Assam has India's lowest electricity rates, making AC running costs very affordable.

Climate: Humid SubtropicalPeak Season: April – JuneAvg Usage: 9 hrs/dayElectricity Rate: ₹5.5/unit

Must-Have Features for Guwahati

Strong dehumidification

Auto-clean

Dry mode

Copper coil

Avoid in Guwahati

Models without dry mode

Low dehumidification

Top Pick

Hitachi RSB518HBEA

Best overall choice for Guwahati's climate. Designed specifically for Humid Subtropical conditions.

Value Pick

LG RS-Q18YNZE

Best bang-for-buck option for Guwahati residents who want reliable cooling without overspending.

Monthly AC Cost in Guwahati: 3-Star vs 5-Star

Tonnage

3-Star Cost

5-Star Cost

1.0T₹1,485₹1,040Save ₹445

1.2T₹1,782₹1,247Save ₹535

1.5T₹2,228₹1,559Save ₹669

2.0T₹2,970₹2,079Save ₹891

Based on 9 hrs/day · ₹5.5/unit (Guwahati) · Split AC

Expert Tip for Guwahati

Guwahati's tropical climate means humidity is the bigger enemy than heat. Dry mode usage will be as frequent as cooling mode.

Tropical / High Humidity Climate Zone

90%+ humidity — dehumidification is your priority

Other cities in this zone:

KolkataBhubaneswarThiruvananthapuramPort BlairAgartala

Guwahati Quick Facts

StateAssam

ClimateHumid Subtropical

Peak Temp36°C

Peak SeasonApril – June

Avg AC Usage9 hrs/day

Electricity Rate₹5.5/unit

MaintenanceEvery 2 months

Top Saving Tip

Guwahati's low electricity rate (₹5.5/unit) means even a 3-star AC is affordable. But 5-star still saves ₹1,500–2,500/year — worth the upgrade.

Tonnage Note

Add 15% for tropical humidity

Calculate Your Tonnage →

Guwahati Calculators

AC Bill Calculator Electricity Cost AC Cost Per Hour 1.5 Ton AC Cost Best AC Guide

Explore More Cities

Best AC for Guwahati2026 Climate Guide