4 Star AC Power Consumption: Units, Electricity Cost & Savings Guide (2026)

Are you looking for a cooling solution that provides high cooling performance without burning a hole in your pocket by purchasing a 5-star AC? A 4-star AC is the best compromise solution for you. It is more energy-efficient than a 3-star AC and slightly less expensive than a 5-star AC.

If you are looking for reliable information on 4-star AC power consumption, electricity cost, and whether it is worth purchasing, this article will help you understand everything in detail.

Now, let’s understand it in detail.

What Does a 4 Star Rating Mean?

In India, air conditioners are rated by the Bureau of Energy Efficiency (BEE). The rating of an air conditioner is measured by the number of stars, ranging from 1 star (least efficient) to 5 stars (most efficient).

A 4-star AC is highly energy-efficient and consumes less electricity compared to a 3-star AC, but slightly more than a 5-star AC.

In simple words:

                               Higher Rating= Lower Electricity Bill

So, a 4-star AC provides high efficiency without the high price tag of a 5-star AC.

4 Star AC Power Consumption Per Hour

The power consumption of an AC depends on factors such as tonnage, usage hours, insulation of the room, and whether it is an inverter AC or not.

Here is the approximate power consumption:

AC Capacity	Average Power Consumption Per Hour	Monthly Units (8 hrs/day approx.)
1 Ton 4 Star AC	0.9 – 1.1 units	210 – 260 units
1.5 Ton 4 Star AC	1.2 – 1.4 units	280 – 330 units
2 Ton 4 Star AC	1.7 – 2.0 units	400 – 470 units

The power consumption may vary slightly depending on the brand and the temperature setting.

4 Star AC Power Consumption of Different Tonnage Models

AC Capacity	Power Consumption Per Hour	Room Size (Approximately)
1 Ton	0.9 – 1.1 units/hour	Up to 120 sq.ft.
1.5 Ton	1.2 – 1.4 units/hour	Up to 120- 180 sq. ft.
2 Ton	1.7 – 2.0 units/hour	Up to 180-300 sq. ft.
2.5 Ton	2.1 – 2.4 units/hour	Up to 300- 400 sq. ft.

Using the right tonnage will help in efficient cooling and avoid unnecessary power consumption.

4 Star Split AC Power Consumption

A 4-star split AC consumes slightly less power compared to a window AC of the same star rating.

Advantages:

• Improved airflow and cooling
• Less noise
• Latest design
• Available in inverter models
• Enhanced long-term energy efficiency

Split ACs are widely used in bedrooms and living rooms.

4 Star Window AC Power Consumption

A 4-star window AC is energy-efficient but consumes slightly more power compared to a split AC.

Advantages:

• Less expensive upfront
• Easy to install
• Suitable for small rooms
• Easy to maintain

For cost-effective configurations, window ACs are a good option.

4 Star Inverter vs Non-Inverter AC

First, you need to understand that Star rating and inverter are two separate things, and having a good star rating but not a good inverter model is a different thing altogether:

4 Star Inverter AC

• Compressor speed varies automatically.
• Helps in maintaining room temperature.
• Less electricity consumption in the long run.
• Less noise.
• Comfortable

4 Star Non-Inverter AC

• The compressor works at constant speed.
• Turns on and off frequently.
• Slightly higher consumption.
• Lower purchase cost.

In practical usage, a 4 star inverter AC will consume less electricity than a 4 star non-inverter AC, especially when used for more than 6 hours a day.

How Much Does It Cost to Run a 4 Star AC?

Let’s calculate.

If your unit rate is ₹8 per unit and your 1.5 ton 4 star AC consumes 1.3 units per hour:

• 1.3 units × ₹8 = ₹10.4 per hour
• Running 8 hours a day = ₹83.2 per day
• Per month (30 days) ≈ ₹2,496

This is less than a 3 star AC but slightly more than a 5 star AC.

And if you want specific calculations, you can use the NoBroker AC Electric Consumption Calculator to get calculations specific to your model.

Factors That Affect 4 Star AC Power Consumption

Even the most efficient AC can consume more power if:

• The temperature is set below 20°C.
• The room is not well-insulated.
• The filters are dirty.
• The wrong size of AC is used.
• The room gets direct sunlight.
• To be most efficient, keep the temperature between 24°C and 26°C.

Is a 4 Star AC Worth Buying?

Yes, and especially if:

• Your usage is 6-8 hours a day.
• You want long-term savings without paying the price of 5 Star price.
• Electricity rates are moderate to high.
• You want better efficiency than a 3-star AC.
• 4-star AC is a perfect blend of affordability and energy savings, and hence the best choice for most Indian families.

Conclusion

Knowing how much power a 4-star AC consumes will help you pick the right one according to your cooling requirements and electricity bill. It consumes less power than a 3-star AC and is cheaper than a 5-star AC.

If you are looking for efficient cooling with decent long-term savings, a 4-star AC is a good choice.

Alternate AC Power Consumption Guides

Get insights into electricity usage for split ACs, star-rated models, and different ton capacities. NoBroker’s alternate guides help you save energy without compromising comfort. Discover our other popular guides to learn more.

AC Power Consumption Guides
AC vs Cooler Power Consumption	3-Star vs 5-Star AC Power Consumption
Window AC Power Consumption	1 Ton AC Power Consumption
2 Ton AC Power Consumption	1.5 Ton AC Power Consumption
Split AC Power Consumption	3-Star AC Power Consumption

4 Star AC Power Consumption – FAQ’s

1. How many units of electricity does a 4-star AC consume in 8 hours?

Ans- A 1-ton AC consumes 7-9 units, a 1.5-ton AC consumes 9-11 units, and a 2-ton AC consumes 13-16 units of electricity in 8 hours.

2.  Is a 4 Star AC suitable for daily use?

Ans- Yes, it is suitable for use for 6-8 hours a day.

3. Does a 4-star AC or a 5-star AC consume more electricity?

Ans- A 4-star AC consumes slightly more electricity than a 5-star AC.

4. Does the inverter reduce the power consumption of a 4-star AC?

Ans- Yes, inverter ACs are more efficient in actual use.

5. How much does a 4-star AC increase the electricity bill every month?

Ans- It may increase the electricity bill by ₹2,200 to ₹3,500, depending on the tonnage and usage.

6. Is 4-star AC suitable for Indian summers?

Ans- Yes, it is very efficient in cooling even in hot temperatures.

7. How to calculate the power consumption of a 4-star AC?

Ans- Multiply the kW rating of the AC by the usage hours.

Example: 1.3 kW × 8 hours = 10.4 units per day.

8. Is 4 star AC more economical than 5 star AC?

Ans- Yes, it is.

9. Does operating the AC at 24°C help cut down power consumption?

Ans- Yes, it does. It is always better to keep the temperature between 24-26°C.

10. Which one should I purchase, 4 star or 5 star AC?

Ans- If you are looking for efficiency, go for 5 stars. If you are looking for a balance between price and performance, 4 star is the best option.