Refined & Expanded Article: Best AC Temperature to Save Electricity in Summer, According to Experts

As temperatures continue to rise across India, air conditioners have become a daily necessity in most households. But with constant AC usage comes another concern — soaring electricity bills. Many people believe setting the AC at 16°C or 18°C cools the room faster and better, but energy experts say that is one of the biggest myths about air conditioners.

According to cooling experts and energy efficiency guidelines, the ideal AC temperature during Indian summers is between 24°C and 26°C. This range helps maintain comfort while significantly reducing electricity consumption and lowering stress on the air conditioner.

Why 24°C to 26°C Is Considered the Ideal AC Temperature

Modern air conditioners are designed to perform most efficiently at moderate cooling levels. When the thermostat is set too low, the compressor works continuously at maximum capacity, consuming far more electricity than necessary.

Experts explain that setting the AC between 24°C and 26°C allows the compressor to cycle normally, maintaining steady cooling without excessive power usage.

In fact, studies show that increasing the AC temperature by just 1°C can reduce electricity consumption by nearly 6 per cent. Over an entire summer season, this can lead to substantial savings on power bills.

Does Lower Temperature Cool the Room Faster?

One of the most common misconceptions is that setting the AC to 16°C cools the room more quickly. In reality, air conditioners cool at a fixed speed regardless of the set temperature.

Lowering the thermostat simply forces the AC to run for a longer duration before reaching the target temperature. This means:

• Higher electricity consumption
• Increased compressor strain
• Faster wear and tear of components
• Overcooling and discomfort

So while the room may eventually feel colder, it does not cool “faster” in practical terms.

Problems Caused by Using AC at 16°C

Running an AC continuously at very low temperatures can create several issues beyond high electricity bills.

Some common problems include:

• Dry skin and throat
• Uneven cooling inside the room
• Increased indoor humidity imbalance
• Frequent compressor overheating
• Reduced AC lifespan
• Higher maintenance costs

In Indian weather conditions, experts say temperatures below 22°C are usually unnecessary for everyday comfort.

How Inverter ACs Help Save More Electricity

Most newer inverter air conditioners are built to optimise energy use by adjusting compressor speed automatically based on room temperature.

Unlike non-inverter ACs that repeatedly switch on and off, inverter models maintain a stable cooling cycle, which consumes less power over time.

Many modern ACs now include features like:

• Eco Mode
• AI Cooling
• Sleep Mode
• Energy Saver Mode

These features intelligently regulate cooling to reduce unnecessary electricity usage, especially at night.

Why Sleep Mode Can Make a Big Difference

Sleep Mode is one of the most underused AC features in Indian homes. During sleep, body temperature naturally drops, meaning the room does not need extremely cold temperatures overnight.

Sleep Mode gradually increases the temperature by 1–2 degrees while maintaining comfort, helping users save power without waking up feeling hot.

Simple Tips to Reduce AC Electricity Bills

Experts also recommend combining good cooling habits with efficient AC settings to maximise savings.

Here are some practical tips:

Use ceiling fans with AC

Fans help circulate cool air more evenly, allowing users to increase the AC temperature slightly while maintaining comfort.

Keep doors and windows closed

Cool air escapes quickly from open spaces, forcing the AC to work harder.

Block sunlight during daytime

Curtains and blinds help reduce indoor heat buildup.

Clean filters regularly

Dirty filters restrict airflow and increase energy consumption. Filters should ideally be cleaned every two to three weeks during heavy summer usage.

Service the AC regularly

Routine maintenance improves cooling efficiency and prevents long-term damage.

What Temperature Is Best for Night Use?

Experts generally recommend:

• 24°C during daytime use
• 25°C to 26°C during nighttime use with Sleep Mode enabled

This combination balances comfort, cooling efficiency and lower electricity costs.

Final Takeaway

The smartest way to reduce electricity bills during summer is not by overcooling the room, but by using the AC efficiently. Experts agree that keeping the temperature between 24°C and 26°C offers the best balance between comfort and energy savings.

Combined with regular maintenance, proper ventilation control and smart cooling modes, these small changes can significantly reduce power consumption while extending the life of your air conditioner.