Best Temperature Setting for Saving Electricity in India
AC BillCalc Editorial Team
If you've ever stared at your electricity bill in disbelief after a hot Indian summer, this article is for you. Millions of Indian households set their ACs to 18°C or 20°C out of habitl, believing lower means faster cooling. The truth? That single habit could be inflating your electricity bill by up to 36% every single month.
This guide breaks down the ideal AC temperature settings for Indian homes, city-by-city recommendations, sleep settings, and science-backed tips to stay cool without paying a fortune.
Quick Answer
Use our AC Bill Calculator to see exactly how much each temperature setting is costing you, and how much you'd save by switching to 24°C.
Key Takeaways
- ✓The best AC temperature for saving electricity in India is 24°C, as officially recommended by the Bureau of Energy Efficiency (BEE)
- ✓Each degree you lower below 24°C increases power consumption by 6-8% Running AC at 18°C uses 36% more electricity than at 24°C
- ✓India's new proposed regulation will cap AC settings between 20°C and 28°C nationally
- ✓Setting AC to 26°C with a ceiling fan can feel as comfortable as 23°C, and saves up to 18% more
- ✓For sleeping, 26°C with Sleep Mode is ideal. Sleep Mode reduces overnight power use by 20-30%
- ✓Room ACs now account for up to 25% of India's peak electricity demand
What Is the Best AC Temperature for Saving Electricity in India?
The answer is simple and government backed: 24°C.
The Bureau of Energy Efficiency (BEE), under India's Ministry of Power, has set 24°C as the mandatory default factory setting for all new air conditioners sold in India since 2020. This is not a casual suggestion, it's based on national research across Indian climate zones and is designed to reduce India's electricity consumption by 20%.
This temperature sits within the human thermoneutral zone of 22°C to 26°C, where the body maintains comfort without physiological strain. It's the sweet spot: cool enough to be comfortable, not so cold that your compressor runs continuously at full blast.
Each degree below 24°C raises energy consumption by about 6%. A household running its AC at 18°C uses roughly 36% more electricity than one running at 24°C.
The 18°C Myth: Why Lower Is NOT Faster
This is the biggest misconception in Indian AC usage. People assume that setting 16°C or 18°C will:
- •Cool the room faster ✗
- •Make the room colder sooner ✗
- •Provide better comfort ✗
None of these are true.
The BEE's own FAQ states it clearly: the cooling action of the compressor is the same at all temperature settings. What changes is how long the compressor keeps running. At 18°C, the compressor works continuously until it reaches a much lower target temperature, burning more electricity without actually cooling faster.
What really happens when you set 16°C or 18°C:
- •The compressor runs flat out for much longer periods
- •Electricity consumption spikes 24-36% vs. 24°C
- •The room gets over cooled, leading to dry throat, sinus issues, and restless sleep
- •Humidity control worsens (over-cooled air becomes too dry)
- •The compressor wears out faster, reducing AC lifespan
Temperature Setting vs. Electricity Consumption: The Numbers
| AC Temperature Set | Extra Power Use vs. 24°C | Monthly Impact (8 hrs/day, ₹8/unit) |
| 24°C (BEE Ideal) | Baseline | Baseline (~₹2,300 for 1.5T 5-Star) |
| 23°C | +6% - 8% | +₹140 - ₹185/month |
| 22°C | +12 - 16% | +₹280 - ₹370/month |
| 20°C | +24 - 32% | +₹550 - ₹740/month |
| 18°C | +36% or More | +₹830 + More/month |
Want to calculate your exact savings? Try the AC Bill Calculator to compare temperature settings side by side using your own electricity rate.
India's New AC Temperature Regulation (2025 - 2026)
India's Union Minister Manohar Lal Khattar announced a landmark proposal in 2025: all new AC units will be locked between 20°C and 28°C, with no ability to go below 20°C or above 28°C.
Key facts about this regulation:
- •India's electricity consumption hit 241 GW in June 2025, largely driven by record heat waves and AC usage
- •Room ACs alone account for up to 25% of India's peak electricity demand
- •Every 1°C increase in thermostat setting saves approximately 6% energy nationally
- •If all Indian households adopted 24°C, India could save approximately 24 billion units of electricity annually
- •Equivalent to the output of 6 thermal power plants
- •Consumers can expect 10-20% reductions in power bills under the regulated range
- •The regulation applies to all 28 states residential, commercial, and automotive ACs
This makes upgrading to the 24°C habit not just a personal financial decision, it's aligned with where India's energy policy is heading.
City Wise Best AC Temperature Settings in India
India's climate varies dramatically. The "ideal" temperature isn't one size fits all:
| City | Climate Type | Recommended Setting | Best Mode |
| Delhi, Rajasthan, Punjab | Dry, extreme heat | 24-25°C | Cool Mode |
| Mumbai, Kochi | Hot, Humid | 24-26°C | Cool + Dry Mode |
| Chennai, Vizag | Hot, coastal humid | 24-26°C | Dry Mode (evenings) |
| Kolkata | Hot, Humid | 24-25°C | Cool Mode |
| Bengaluru, Pune | Moderate heat | 25-26°C | Cool or Eco Mode |
| Ahmedabad, Gujarat | Hot, Dry | 24-25°C | Cool Mode |
| Hyderabad | Hot, Dry | 24-25°C | Cool Mode |
Why Humid Cities (Mumbai, Chennai, Kolkata) Need a Different Approach
In humid coastal cities, setting the AC to 24°C allows the compressor to run longer, which helps remove moisture effectively. This is why 24°C in Mumbai can feel more comfortable than 22°C in Delhi. The dehumidification is doing as much work as the cooling.
Tip for humid cities: Run Dry Mode for 1 hour before bedtime to prep the room, then switch to Cool Mode at 24-26°C. This is particularly effective during the monsoon season.
Best AC Temperature Settings for Different Situations
🌞 Daytime (Home / Work From Home)
Recommended: 24°C - 25°C in Cool Mode
This is the BEE's recommended setting and the most energy efficient for daytime use. Pair it with a ceiling fan, running a fan at the lowest setting makes 26°C feel as comfortable as 23°C, allowing you to raise the thermostat by 2-3°C and save an additional 12-18% on cooling costs.
🌙 Sleeping (Nighttime)
Recommended: 26°C with Sleep Mode enabled
The best AC temperature for sleeping in India is 26°C with Sleep Mode. Sleep Mode automatically raises the set temperature by 1°C every hour after the first 2 hours, preventing over-cooling at night when outdoor temperatures naturally drop. This can reduce overnight power consumption by 20-30% without disturbing your sleep.
Using a timer to turn off the AC around 4-5 AM (when outdoor temperatures fall) can save an additional 40-60 units per month.
Note
While some global sleep studies suggest 18-19°C as ideal for sleep, for Indian homes where outdoor temperatures remain 28-35°C even at night in summer, 26°C with Sleep Mode is the practical and energy-efficient recommendation.
🏃 Away from Home
Recommended: 28-29°C or switch off entirely
If stepping out for 1-2 hours, raise the setting to 28-29°C rather than turning off and on repeatedly. For longer absences, turn off completely, modern inverter ACs cool a room back to 24°C within 15-20 minutes anyway.
🌧️ Monsoon / Humid Evenings
Recommended: Dry Mode at 26°C
During monsoon, humidity is the enemy, not heat. Running Dry Mode removes moisture from the air without running the compressor at full capacity. This is more effective and more energy efficient than blasting Cool Mode at low temperatures on humid evenings.
The Ceiling Fan + AC Combination: India's Most Underused Hack
Running a ceiling fan alongside your AC is one of the most effective and overlooked ways to cut electricity bills in India. Here's why it works:
- •A fan on the lowest setting makes 26°C feel as cool as 23°C by improving air circulation
- •You can raise the AC thermostat by 2-3°C without noticing any comfort loss
- •That 2-3°C difference translates to 12-24% savings on your monthly AC electricity cost
- •A ceiling fan uses only 40-75 watts, a fraction of AC power consumption
CESC (Calcutta Electric Supply Corporation) officially advises keeping your AC at 25-26°C with fan support, which can lower electricity costs by up to 15-20%.
AC Temperature & Health: What Indians Often Overlook
Setting the AC too low doesn't just waste electricity, it affects your health:
- •Respiratory issues: Sudden shifts from 45°C outdoors to 18°C indoors stress the respiratory system
- •Dry skin and eyes: Over-cooled air strips moisture from skin, throat, and nasal passages
- •Fatigue and joint pain: Prolonged exposure to very cold air can cause muscle stiffness
- •Sleep disruption: An over cooled bedroom causes restless sleep as the body fights to maintain core temperature
- •Sinus and cold: Frequent temperature shocks weaken immunity over time
The scientifically proven thermoneutral comfort zone is 22°C-26°C, which is exactly why BEE's 24°C recommendation is grounded in both energy science and human physiology.
Frequently Asked Questions
Is 24°C or 26°C better for saving electricity?
26°C saves slightly more electricity, but 24°C is the BEE recommended balance between comfort and efficiency for most Indian homes. If you use a ceiling fan alongside, 26°C with a fan feels as comfortable as 24°C without one, and costs less.
Does setting the AC to 18°C cool the room faster?
No. This is a common myth. The cooling speed depends on the AC's capacity (tonnage), not the set temperature. The BEE explicitly states that the cooling action of the compressor is the same at all settings. A lower number just means the compressor runs longer.
What is the best AC temperature for sleeping in India?
26°C with Sleep Mode enabled. Sleep Mode gradually increases temperature through the night as outdoor temps drop, saving 20-30% overnight without disrupting your sleep.
What is India's new AC temperature regulation?
The government has proposed capping AC settings between 20°C and 28°C for all new ACs sold in India. Default factory settings will be locked and manufacturers will display compliance labels. This is expected to reduce national peak electricity demand significantly.
How much electricity does each degree save?
Every 1°C increase above 22°C saves approximately 6-8% electricity. Raising from 18°C to 24°C saves roughly 36% per hour of use.
Final Thoughts
The best temperature setting for saving electricity in India is 24°C, and the science, the government, and the electricity bills all agree. It's not about enduring discomfort; it's about correcting a deeply ingrained myth that lower = better.
Pair 24°C with a ceiling fan, use Sleep Mode at night, switch to Dry Mode during monsoons, and raise the setting to 28°C when you're stepping out. These four habits alone can cut your AC electricity bill by 25-40% through summer.
And if you want to see the exact rupee savings based on your own AC model and usage hours, the AC Bill Calculator gives you instant, personalised results.
Check Your AC Running Cost by State
Electricity rates vary across Indian states and often increase as monthly consumption rises. Get an instant estimate of your AC's daily, monthly, and yearly electricity costs based on your state tariff, AC tonnage, star rating, and usage hours.