AC Electricity Cost for Office
in India (2026)
Office ACs run longer than home ACs — typically 8–12 hours per day. They also face heat from computers, lights, and multiple occupants. A small office of 150–250 sq ft needs 1.5–2.0 tons. Running 10 hours/day, a 1.5-ton 5-star AC costs ₹1,500–2,000/month.
Quick Answer
₹2,205
Monthly Cost
315
Units/Month
₹7
Per Unit Rate
Office ACs run longer than home ACs — typically 8–12 hours per day. They also face heat from computers, lights, and multiple occupants. A small office of 150–250 sq ft needs 1.5–2.0 tons. Running 10 hours/day, a 1.5-ton 5-star AC costs ₹1,500–2,000/month. A 1.5 – 2.5 Ton 5-star inverter AC running 10 hours/day costs approximately ₹2,205 per month.
AC Electricity Cost Calculator
₹7.3
Per Hour
₹2,205
Monthly
315
Units/Month
AC Cost for Office
Office-Specific Tips
Account for computer heat — each PC adds 50–100W. Add 0.2–0.3 tons for every 3 computers.
Use LED lights — they generate 80% less heat than tube lights, reducing AC load.
Set AC to 25°C with light formal wear — comfortable and saves 12% vs 22°C.
Use occupancy sensors — auto-off AC when room is empty for 30+ minutes.
Schedule intensive computing for cooler hours — render/compile jobs add significant heat load.
Best AC for Office
Daikin 2.0T 5-Star Inverter
2.0 Ton
Commercial-grade reliability. Handles continuous 10+ hour operation.
LG 1.5T 5-Star Dual Inverter
1.5 Ton
Smart features for small offices. WiFi control for scheduling.
Blue Star 2.5T 5-Star Inverter
2.5 Ton
For larger offices 350–450 sq ft. Heavy-duty continuous operation.
How to Reduce Your AC Electricity Bill
Account for computer heat — each PC adds 50–100W. Add 0.2–0.3 tons for every 3 computers.
Use LED lights — they generate 80% less heat than tube lights, reducing AC load.
Set AC to 25°C with light formal wear — comfortable and saves 12% vs 22°C.
Use occupancy sensors — auto-off AC when room is empty for 30+ minutes.
Schedule intensive computing for cooler hours — render/compile jobs add significant heat load.
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 Office — Complete 2026 Guide
Office ACs run longer than home ACs — typically 8–12 hours per day. They also face heat from computers, lights, and multiple occupants. A small office of 150–250 sq ft needs 1.5–2.0 tons. Running 10 hours/day, a 1.5-ton 5-star AC costs ₹1,500–2,000/month.
Offices generate 50–100W of heat per computer, 30–50W per person, and 20–40W per light. Add these to the room heat load before choosing tonnage. A 200 sq ft office with 3 computers needs 2.0 tons, not 1.5 tons.
Star rating makes a significant difference for office ACs. A 5-star inverter AC saves ₹945/month compared to a 3-star model at 10 hours/day usage. Over a 5-year period, that saving amounts to ₹28,350 — far exceeding the price premium of a 5-star model.
Set office AC to 25–26°C — slightly higher than home because office clothing is lighter and activity generates body heat. Each 1°C higher saves 6–8% on a 10-hour daily bill.
1.5 – 2.5 Ton
Recommended Tonnage
150 – 400 sq ft
Avg Room Size
10 hrs/day
Typical Usage
₹2,205
1.5T 5★ Monthly
- Account for computer heat — each PC adds 50–100W. Add 0.2–0.3 tons for every 3 computers.
- Use LED lights — they generate 80% less heat than tube lights, reducing AC load.
- Set AC to 25°C with light formal wear — comfortable and saves 12% vs 22°C.
- Use occupancy sensors — auto-off AC when room is empty for 30+ minutes.
- Schedule intensive computing for cooler hours — render/compile jobs add significant heat load.
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 →