AC Electricity Cost for 8 Hours Per Day
in India (2026)
undefined. Calculate exact monthly and annual cost for every tonnage and star rating.
Quick Answer
₹1,764
Monthly Cost
252
Units/Month
₹7
Per Unit Rate
Running a 1.5-ton 5-star inverter AC for 8 hours per day costs approximately ₹1,764 per month at India's average electricity rate of ₹7/unit. Over a 6-month summer season, that's ₹10,584. A 3-star AC would cost ₹2,520/month — ₹756 more.
AC Electricity Cost Calculator
₹7.3
Per Hour
₹1,764
Monthly
252
Units/Month
AC Cost Breakdown at 8 Hours/Day
Factors Affecting Your AC Electricity Cost
Star Rating: 5-star ACs consume ~43% less than 3-star models. At 8 hrs/day, monthly savings are ₹756.
Electricity Rate: India's average rate is ₹7/unit, but it ranges from ₹5.5 (Assam) to ₹8.5 (Maharashtra). Check your state's rate for exact costs.
Tonnage: Correct sizing matters. An oversized AC short-cycles and wastes 20–30% energy. A 1.5-ton AC covers 150–200 sq ft.
Temperature Setting: Each degree above 18°C saves ~6%. At 8 hrs/day, setting 26°C vs 18°C saves ₹635/month.
Room Insulation: Sealed rooms with thermal curtains reduce AC load by 15–20%, saving ₹309/month.
AC Maintenance: Dirty filters increase consumption by 10–15%. Regular servicing saves ₹220/month.
How to Reduce Your AC Electricity Bill
At 8 hrs/day, upgrading from 3-star to 5-star saves ₹450–700/month. The premium pays back in 2–3 years.
Set AC to 24–26°C — at 8 hrs/day, each degree above 18°C saves ~6%, meaning 26°C vs 18°C saves ~48%.
Use ceiling fan alongside AC — allows 2°C higher setpoint with same comfort, saving 12–14%.
Enable timer/sleep mode — auto-shutoff during cooler hours prevents unnecessary runtime.
Service AC filters every 3 months — dirty filters increase consumption by 10–15%.
Seal room gaps and use thermal curtains — reduces AC load by 15–20%.
Best ACs to Save Electricity
Daikin 1.5 Ton 5-Star Inverter
Save ₹650/month vs 3★
Voltas 1.5 Ton 5-Star Inverter
Save ₹580/month vs 3★
LG 1.5 Ton 5-Star AI Inverter
Save ₹560/month vs 3★
Find the Most Energy-Efficient AC for Your Usage
We compared 50+ models across ISEER, star rating, and real electricity cost. See the top picks that save ₹7,000+ per year on your bill.
See Best Energy-Efficient 1.5T ACs 2026Related Guides & Calculators
Frequently Asked Questions
AC Electricity Cost for 8 Hours Per Day — Full Guide
Running your AC for 8 hours per day is moderate-to-heavy usage by Indian standards. 8 hours per day is the national average for AC usage during peak summer. Most Indian households fall in this range. At India's average electricity rate of ₹7/unit, a 1.5-ton 5-star inverter AC running 8 hours daily costs approximately ₹1,764 per month. Over a 6-month AC season, the total cost is ₹10,584.
Star rating is the single most important factor at 8 hours/day usage. A 5-star inverter AC saves ₹756 per month compared to a 3-star non-inverter model. Over one full year, that saving adds up to ₹4,536 — easily covering the premium cost of a 5-star model within 2–3 years.
Tonnage also matters significantly at 8 hours/day. A correctly-sized 1.5-ton AC for a 150 sq ft room will operate efficiently at partial load. An oversized AC short-cycles, running at full power each startup and consuming 20–30% more electricity than a correctly-sized inverter model running continuously at reduced speed.
State electricity rates create large regional differences. At 8 hours/day, the same 1.5-ton 5-star AC costs ₹1,386/month in Assam (₹5.5/unit) vs ₹2,142/month in Maharashtra (₹8.5/unit).
₹1,764
1.5T 5★ Monthly (8h)
₹756
3★ vs 5★ Saving/month
8.4 kWh
Units/Day (1.5T 5★)
April – June
Peak Season
- Set AC to 24–26°C — at 8 hrs/day, every degree above 18°C saves ~6%.
- Use ceiling fan alongside AC — allows 2°C higher setpoint, saving 12–14%.
- Enable timer/sleep mode — auto-shutoff during cooler hours.
- Service AC filters every 3 months — at high daily usage, filters clog faster.
- Seal room gaps — reduces AC load by 15–20%.
Looking for the most energy-efficient 1.5 Ton AC?
We compared 50+ models across ISEER, star rating, and real electricity cost. See the top picks that save ₹7,000+ per year on your bill.
See Best Energy-Efficient 1.5T ACs 2026 →