Power Consumption of 1.5 ton ACs

Understand the consumption of 1.5 ton ACs and how to reduce power consumption to save energy and costs. If you are looking to buy a new AC, get yours on Easy EMIs with Bajaj Finserv.
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3 min
25-September-2025

If you have ever wondered why your electricity bill goes up during summer, the answer often lies in the air conditioner. A 1.5 ton AC is one of the most popular choices for cooling medium-sized rooms. Families choose it for bedrooms, living areas, or even home offices because it balances cooling and energy use. Did you know that a 1.5 ton AC can consume around 1.2 to 1.8 units of electricity per hour, depending on the model? This is why buyers often look for smarter financing to upgrade without feeling the pinch.

With Bajaj Finserv, you can bring home your preferred AC—or any other appliance—without exhausting your savings. Visit one of the 11.5 lakh plus Bajaj Finserv partner stores in 4,000 cities in India, choose your favourite model, and use the Easy EMI Loan of up to Rs. 5 lakh to make the purchase. Convert the cost into Easy EMIs that match your monthly budget, and even enjoy zero down payment on select models. You can check your loan eligibility online within minutes, so you know exactly what you can buy before stepping into the store.

Check your loan eligibility online in minutes—so you know exactly what you can get, before you even step into the store.

What will be the 1.5 ton AC’s daily electricity consumption

The daily electricity consumption of a 1.5 ton 5 Star Split AC depends on several factors, including:

  • Energy Efficiency Rating (EER or COP): Higher star rated ACs are generally more energy efficient.

  • Actual power consumption: This can vary depending on the specific AC model and can be found in the user manual or manufacturer's specifications.

  • Daily running hours: The longer you run the AC, the more electricity it will consume.

  • Room size and insulation: A well-insulated room will require less energy to cool than a poorly insulated one.

However, we can estimate the daily electricity consumption based on some assumptions:

  • Average Power Consumption: 1.5 kW (1500 watts)

  • Daily Running Hours: 8 hours

With these assumptions, the daily electricity consumption would be:

  • Daily consumption kWh = Power (kW) x Daily Running Hours (hours)

  • Daily consumption kWh = 1.5 kW * 8 hours = 12 kWh

Therefore, under these assumptions, a 1.5 ton AC would consume approximately 12 kWh of electricity per day.

Once you have made the selection, use the Maha Bachat savings calculator to combine dealer offers, brand offers, and Bajaj offers to bring down your purchase cost. Calculate your extra savings today.

What are the factors that affect AC power consumption

Here are the factors that affect the power consumption of a 1.5 ton AC:

1. Room size

  • Larger rooms require more cooling, so the AC has to work harder, increasing power consumption. Matching the AC's capacity (in tons) to the room size is crucial for efficiency.

2. AC capacity (Tonnage)

  • The tonnage of an AC refers to its cooling capacity. Higher tonnage ACs consume more power. An undersized AC will run continuously to cool the space, using more energy, while an oversized AC will frequently turn on and off, also wasting energy.

3. Temperature settings

  • The lower the thermostat setting, the more power the AC uses. Setting the AC to moderate temperatures (around 24°C to 26°C) can reduce energy consumption significantly.

4. Insulation and sealing

  • Proper insulation and sealing in walls, windows, and doors help in maintaining the temperature inside the room, reducing the need for continuous cooling and thus saving power.

5. Usage patterns

  • The more hours the AC runs, the more energy it consumes. Using the AC only when necessary and utilizing energy-saving modes can reduce consumption.

6. Energy efficiency rating (EER/ISEER)

  • ACs with higher star ratings (5-star) or better energy efficiency ratios (EER or ISEER) consume less power for the same level of cooling. Investing in energy-efficient ACs results in lower electricity bills.

7. Outside temperature

  • Higher outdoor temperatures require the AC to work harder to cool the indoor space, leading to increased power usage. In contrast, on cooler days, the AC doesn’t need to run as much.

8. Condition of the AC unit

  • Regular maintenance like cleaning filters, ensuring proper refrigerant levels, and checking for any leaks help the AC perform efficiently. Dirty or malfunctioning units consume more power.

9. Type of AC (Inverter vs non-inverter)

  • Inverter ACs adjust their compressor speed based on the cooling requirement, consuming less power over time. Non-inverter ACs, on the other hand, constantly switch the compressor on and off, leading to higher energy usage.

10. Location and placement of AC

  • Installing the AC in a shaded area prevents it from absorbing excess heat. Direct sunlight on the outdoor unit can make it work harder, consuming more energy.

11. Humidity levels

  • High humidity makes the air feel warmer, so the AC must work harder to maintain comfort. Dehumidification is a key feature in some ACs to handle this factor efficiently.

12. Appliances and lighting in the room

  • Electronic devices and lights generate heat, increasing the cooling load on the AC. Turning off unnecessary appliances can help reduce power consumption.

1.5 ton AC unit consumption per hour

Brand

Suggested model

Consumption (Units/Hour)

LG

LG AI Convertible 6-in-1, 1.5 Ton 5 Star split AC

1.2

Daikin

Daikin 1.5 Ton 4 Star Inverter Split AC (MTKL50U)

1.6

Carrier

Carrier 1.5 Ton 5 Star flexicool convertible 6-in-1 inverter split AC

1.3

Hitachi

Hitachi 1.5 Ton 5 Star inverter split AC

1.8

Voltas

Voltas 1.5 Ton 5 Star adjustable inverter split AC

1.45

Panasonic

Panasonic 1.5 Ton 5 star twin cool inverter split AC

1.25

 

Looking for a power efficient and reliable air conditioner? Check out the Best 1.5 ton AC options available for the best features and deals.

Updated price list of the 1.5 ton ACs in India

Model

Price(Rs.)

Blue Star 5 in 1 Convertible 1.5 Ton 3 Star Inverter Split Air Conditioner with Nano BluProtect Technology (IA324DNUHC_White)

Rs.54,490

Blue Star 1.5 Ton 4 Star Convertible 4 in 1 Cooling Inverter Split AC (Copper, Multi Sensors, Dust Filter, Smart Ready, Blue Fins, Self

Rs.59,000


Disclaimer: The features, availability, and pricing of each model are subject to change and may vary. For the most accurate and up to date information, please visit the official website.

Before you decide, explore the latest offers. You may find a great deal on an AC model that matches your needs.

How to calculate the 1.5 ton AC current consumption using the EER formula

The EER formula actually can't be directly used to calculate the current consumption of your AC. The EER relates the cooling capacity of the AC to the power it consumes, but it doesn't tell you anything specific about the current draw.

Here's how EER is used to estimate power consumption:

EER (Energy Efficiency Ratio) = Cooling Capacity (in BTU/hr) / Power Consumption (in Watts)

However, to calculate the current, you'd need to know the AC's voltage rating as well. With both EER and voltage, you can use the following steps:

  1. Convert BTU/hr to Watts: Multiply the cooling capacity (in BTU/hr) by a conversion factor of 0.9478 to get Watts.

  2. Calculate Power Consumption: Divide the cooling capacity (in Watts) by the EER rating of your AC.

  3. Find the Current: Divide the Power Consumption (Watts) by the voltage (in Volts) to get the current (in Amperes).

Important Note:

  • The EER rating and voltage information can be found on the AC unit's label or user manual.

  • This is an estimate, and the actual current draw can vary depending on the operating conditions of the AC.

For a more practical approach, you can estimate the AC's power consumption directly using its EER and tonnage (cooling capacity). Multiply the tonnage by a base value, like 1.5 kW, to get an approximate value in kW. This will give you a general idea of how much power the AC uses.

You can also check out - Window vs split AC electricity consumption

You can also explore the latest offers on a wide range of electronics and home appliances, making sure you get the best deal on every purchase.

Get air conditioners on Easy EMIs with Bajaj Finserv

Beating the summer heat with a new air conditioner is now simple and budget-friendly with Bajaj Finserv’s flexible financing options. Whether you are planning to buy a 1.5 ton inverter AC for your bedroom or a 5 Star split AC for your living room, you can make the purchase without straining your savings. You can also maximise your savings by using the Maha Bachat Savings Calculator. This smart tool combines brand offers, dealer discounts, and EMI schemes in one place—helping you bring down the total cost while paying in small, manageable instalments. Here is how you can get started:

 

  • Explore ACs on Bajaj Mall: Browse a wide range of ACs from trusted brands like LG, Samsung, BlueStar, and Voltas. Compare features such as energy ratings, inverter technology, cooling capacity, and design to find the perfect AC for your space.
  • Visit a partner store: Once you shortlist a model, step into any of Bajaj Finserv’s 1.5 lakh partner stores across 4,000 cities in India. See the AC in person, check the specifications, and speak to experts before making your choice.
  • Choose the Easy EMI Loan option: At checkout, select the Bajaj Finserv Easy EMI Loan. Avail financing of up to Rs. 5 lakh and convert the cost of your AC into convenient monthly instalments. On select models, you can even enjoy a zero down payment option.
  • Check your loan eligibility online: Plan your purchase better by checking your loan eligibility in just a few minutes. Simply enter your mobile number and OTP to know your pre-approved limit before you shop.
  • Use the EMI Network Card for instant checkout: Already have the Bajaj Finserv EMI Network Card? Use it for a quick, paperless purchase and convert your AC cost of up to Rs. 3 lakh into Easy EMIs right away.

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Pro tip

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Frequently asked questions

Can I buy ACs on EMIs?

Yes, you can purchase ACs with Bajaj Finserv’s Easy EMI options.

If you are an existing user of the Bajaj Finserv Insta EMI Card:

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  • Choose the preferred model and visit a Bajaj Finserv partner store to check it out in person

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  • Enjoy your new AC on Easy EMIs

If you do not have one, there is no need to worry. Check your eligibility for an Insta EMI Card and take the first step towards enjoying the affordability and convenience of Easy EMIs.

How much electricity is consumed by an 1.5 ton AC?
The electricity consumption of a 1.5 ton AC varies based on factors such as its star rating, usage patterns, room insulation, external temperature, and maintenance. On average, a 5 Star 1.5 ton AC consumes around 1.2 to 1.5 units per hour, while a 3 Star AC uses approximately 1.5 to 1.7 units per hour.
How does AC consume electricity?
An AC consumes electricity to power its compressor, fan, and other components. The compressor works to cool the refrigerant, which in turn cools the air circulated by the fan. The thermostat regulates the temperature by switching the compressor on and off, impacting the overall electricity consumption.
How much current is required for an 1.5 ton AC?
The current required for a 1.5 ton AC depends on its power consumption and the operating voltage. For example, a 1.5 ton AC with a power input of 1,800 watts and operating at a standard voltage of 230V would require approximately 7.83 amperes of current.
How to reduce AC power consumption?
To reduce AC power consumption, consider the following tips:

Use a higher star rated AC: Opt for a 5 Star AC for better energy efficiency.

Set the thermostat at an optimal temperature: Setting it at 24 26 degrees Celsius can save energy.

Regular maintenance: Keep the AC well maintained with clean filters and timely servicing.

Proper insulation: Ensure your room is well insulated to prevent cool air from escaping.

Use energy saving mode: Utilise the AC's energy saving features to optimise performance.

Does a 1.5 ton AC use more power than a 1 ton AC?

Yes, a 1.5 ton AC generally uses more power than a 1 ton AC as it has a higher cooling capacity, meaning it needs more energy to cool larger spaces. However, factors like efficiency, usage patterns, and technology can influence the overall power consumption.

How much power does a 1.5 ton AC use when cooling a room?

A 1.5 ton AC typically uses around 1.5 kW per hour, depending on its energy efficiency rating and operational conditions. Inverter technology can reduce power usage by adjusting the cooling based on room temperature, potentially lowering energy consumption over time.

How can I reduce the power consumption of my 1.5 ton AC?

To reduce power consumption, set the AC to an optimal temperature, usually around 24°C. Regular maintenance, cleaning filters, ensuring proper insulation, and using energy-saving modes can also help reduce electricity usage. Inverter ACs are more efficient, adjusting output based on cooling demand.

Does the temperature setting impact the power usage of a 1.5 ton AC?

Yes, temperature settings significantly impact power usage. Lowering the AC temperature forces the unit to work harder, consuming more electricity. Setting the thermostat around 24°C provides a balance between comfort and energy efficiency, reducing the overall electricity consumption.

What is the power consumption of a dual inverter 1.5 ton AC?

A dual inverter 1.5 ton AC generally consumes less power than a standard AC. It can adjust its compressor speed based on cooling needs, typically using around 1.2 kW per hour. This results in energy savings of up to 30-50%, depending on usage and environmental factors.

Does the age of a 1.5 ton AC affect its power consumption?

Yes, the age of a 1.5 ton AC can affect its power consumption. Older units may become less efficient due to wear and tear, outdated technology, or lack of maintenance, leading to higher electricity usage. Upgrading to a newer model can improve efficiency and reduce power consumption.

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