
A 1.5 ton AC is a practical choice for many homes and offices in Bangladesh, especially during hot and humid summer months. It is stronger than a 1-ton AC and is commonly used for medium-sized bedrooms, small living rooms, and office spaces.
However, many buyers worry about electricity bills before purchasing an AC. The actual electricity consumption of a 1.5 ton AC depends on several factors, including AC type, model efficiency, room size, temperature setting, outdoor heat, insulation, and maintenance.
In this guide, we will explain the estimated electricity consumption of a 1.5 ton AC, monthly bill calculation, inverter AC benefits, and simple ways to reduce unnecessary power use.
1.5 Ton AC Electricity Consumption: Quick Answer
A 1.5 ton AC may consume around 1.2 to 1.8 units of electricity per hour when running continuously at higher load. Inverter models may use less electricity after the room reaches the set temperature because the compressor can adjust its speed.
Here, one unit of electricity means 1 kilowatt-hour, or 1 kWh.
The term “1.5 ton” refers to cooling capacity, not the physical weight of the AC. A 1.5 ton AC usually has around 18,000 BTU per hour cooling capacity, making it suitable for many medium-sized rooms. However, actual suitability depends on room size, ceiling height, sunlight exposure, number of people, and insulation.
If you use a 1.5 ton AC for around 8 hours daily, it may consume roughly 300 to 400 units per month in many common usage scenarios. The actual amount can be lower or higher depending on your AC model and usage habit.
Why 1.5 Ton AC Is Popular in Bangladesh


Bangladesh summers can be very uncomfortable, especially from April to August. In many homes, a fan alone is not enough during peak heat. A 1.5 ton AC provides a good balance between strong cooling and manageable electricity use for medium-sized spaces.
It is more powerful than a 1 ton AC and usually more practical than a 2 ton AC for many city apartments, bedrooms, and small office rooms. A 1.5 ton inverter AC can cool the room quickly and then adjust the compressor speed to maintain the selected temperature.
How Many Units Does a 1.5 Ton AC Use Per Hour?
Electricity use depends on rated power input and real-life conditions. A non-inverter AC usually runs at a fixed speed, while an inverter AC adjusts compressor speed based on cooling demand.
|
AC Type |
Approx. Power Use |
Approx. Unit Use Per Hour |
|
Non-inverter 1.5 ton AC |
1,500W to 1,800W |
1.5 to 1.8 units |
|
Inverter 1.5 ton AC |
700W to 1,500W |
0.7 to 1.5 units |
|
Energy-efficient inverter AC |
600W to 1,200W |
0.6 to 1.2 units |
Please Note: These are estimated figures. Actual consumption may vary based on room temperature, outdoor heat, insulation, filter condition, compressor load, and temperature setting. For the most accurate number, check the product specification label of your AC model.
How to Calculate 1.5 Ton AC Power Consumption
You can estimate AC electricity consumption with this formula:
Electricity Consumption = Wattage × Running Hours ÷ 1000
Example:
If your 1.5 ton AC uses 1,500 watts and runs for 8 hours:
1,500 × 8 ÷ 1000 = 12 units
So, the AC may use around 12 units per day.
If used for 30 days:
12 × 30 = 360 units per month
This is only an estimate. Inverter ACs may not run at full power the entire time. After the room becomes cool, they may reduce compressor speed and use less electricity.
1.5 Ton AC Monthly Electricity Bill Estimate
Electricity cost in Bangladesh depends on your tariff slab, distribution provider, total monthly usage, and the latest applicable rate. Because rates can change, always check your current electricity bill or official tariff information for an accurate calculation.
For simple understanding, the table below uses Tk 10 per unit only as an example. Your actual cost may be lower or higher.
|
Daily AC Use |
Estimated Monthly Units |
Example Cost at Tk 10/Unit |
|
4 hours/day |
Around 180 units |
Around Tk 1,800 |
|
6 hours/day |
Around 270 units |
Around Tk 2,700 |
|
8 hours/day |
Around 360 units |
Around Tk 3,600 |
|
10 hours/day |
Around 450 units |
Around Tk 4,500 |
A better formula is:
Monthly AC Cost = Estimated Monthly Units × Your Electricity Rate Per Unit
For example, if your AC uses 360 units per month and your average rate is Tk 10 per unit:
360 × 10 = Tk 3,600
If your rate is different, replace Tk 10 with your actual rate.
Why a 1.5 Ton Inverter AC Can Be More Efficient
A 1.5 ton inverter AC can be more efficient for regular use because it adjusts compressor speed according to room temperature. It may use more power at the beginning to cool the room, then reduce power use after reaching the set temperature.
This can help maintain stable cooling, reduce unnecessary electricity use, and improve comfort during long summer nights. However, actual savings depend on model efficiency, usage duration, room condition, maintenance, and temperature setting.
Smart Features to Look for in a 1.5 Ton AC
When buying a 1.5 ton AC, compare features based on your room and usage needs. Useful features may include:
- Inverter technology
- Energy-saving or eco mode
- Sleep mode
- Timer function
- Self-cleaning function
- Copper condenser
- Anti-corrosion coating
- Low-noise operation
- Smart or Wi-Fi control
- Voltage fluctuation protection
Feature availability varies by brand and model, so always check the product specification, warranty, and after-sales service support before buying.
Brands such as LG, Haier, and Eco+ offer 1.5 ton AC options in Bangladesh with different features and price ranges. The best choice depends on your room size, budget, and daily usage.
How to Keep 1.5 Ton AC Bills Low
A 1.5 ton AC can be used more efficiently with smart habits:
- Keep the temperature around 24°C to 26°C
- Use sleep mode at night
- Use a ceiling fan with the AC
- Keep doors and windows closed
- Use curtains to block direct sunlight
- Clean the AC filter regularly
- Service the AC before peak summer
- Avoid setting the temperature too low
- Choose the right AC capacity for your room
- Seal air gaps around windows and doors
These steps can help the AC cool faster and reduce unnecessary power use.
Should You Buy a 1.5 Ton AC?
If your room is medium-sized, a 1.5-ton AC can be a smart choice for Bangladeshi summers. It offers stronger cooling than a 1-ton AC and is often more suitable for bedrooms, small living rooms, and office spaces.
For regular use, a 1.5 ton inverter AC is usually a practical option because it can adjust compressor speed and help manage electricity consumption better. Instead of focusing only on the bill, choose the right model, use a sensible temperature setting, and maintain the AC properly.
Looking for a 1.5-ton AC for Bangladesh summer? Explore inverter AC options from trusted brands such as LG, Haier, and Eco+ at Butterfly Group and choose the right model based on your room size, cooling needs, and budget.
FAQs About 1.5 Ton AC Electricity Usage
A 1.5 ton AC may use around 1.2 to 1.8 units per hour when running continuously at higher load. Inverter models may use less after the room reaches the set temperature.
A 1.5 ton AC may use around 10 to 14 units in 8 hours, depending on the AC type, wattage, temperature setting, room condition, and outdoor temperature.
A 1.5 ton inverter AC may use around 0.6 to 1.5 units per hour depending on compressor load and room condition. It may use more power at the beginning and less after the room becomes cool.
Yes, a 1.5 ton AC is a practical choice for many medium-sized rooms in Bangladesh. It provides strong cooling and can be more energy-efficient if you choose an inverter model and use it properly.
An inverter AC can help reduce electricity use because it adjusts compressor speed instead of running at full power all the time. Actual savings depend on usage pattern, room size, temperature setting, and model efficiency.
Keeping the AC around 24°C to 26°C is usually a practical setting for comfort and energy control. Using a ceiling fan with the AC can also help distribute cool air better.
Popular 1.5 ton AC options in Bangladesh include brands such as LG, Haier, Eco+, Gree, General, Walton, and others. Availability, features, and prices may vary by model and seller.
Final Thoughts
A 1.5 ton AC may use around 1.2 to 1.8 units per hour when running continuously at higher load. Inverter models may use less after the room reaches the set temperature.
If used for around 8 hours daily, monthly consumption may be roughly 300 to 400 units, depending on model efficiency, room condition, temperature setting, and usage habits. With smart use and regular maintenance, a 1.5 ton AC can provide comfortable cooling while helping reduce unnecessary electricity waste.



