How many units does a 1.5 ton AC use per hour? It depends on whether it’s an inverter model, the weather and how many hours you run it. This AC units calculator shows units per hour, per day and per month, your monthly cost, and how much solar you need to run the AC during the day.
AC Units & Cost Calculator
AC ek ghante mein kitne unit leta hai aur mahine ka kitna bill banta hai?
Typical average draw once the room is cool: inverter ACs about 0.7 / 1.0 / 1.35 kW for 1 / 1.5 / 2 ton; non-inverter about 1.1 / 1.6 / 2.1 kW. Real use depends on room size, insulation and thermostat setting (26°C saves the most).
AC units per hour in Pakistan
| AC | Inverter AC (units per hour) | Non-inverter AC (units per hour) |
|---|---|---|
| 1 ton | about 0.6 – 0.8 | about 1.0 – 1.2 |
| 1.5 ton | about 0.9 – 1.2 | about 1.5 – 1.8 |
| 2 ton | about 1.2 – 1.6 | about 2.0 – 2.4 |
These are typical averages after the room has cooled. In the first 20–30 minutes, and on 45°C days, every AC draws close to its full rated power.
Example: 1.5 ton inverter AC
About 1 unit per hour × 8 hours × 30 days = 240 units a month. At an overall rate of Rs 55 per unit, that adds roughly Rs 13,200 to your bill, and it can also push you into a higher slab. Check the effect on your full bill with the electricity bill calculator.
Inverter vs non-inverter AC
A non-inverter AC switches its compressor fully on and off. An inverter AC slows its compressor down once the room is cool, so it uses about 30–40% less electricity over a day. Over a Pakistani summer, the saving usually covers the price difference within one or two seasons.
Tips to cut AC units
- Set the thermostat to 26°C and use a ceiling fan with it.
- Clean the filters every two weeks in summer.
- Close curtains on sun-facing windows and seal gaps around doors.
- Pre-cool rooms in the afternoon while solar power is available.
Running an AC on solar
To run a 1.5 ton inverter AC during sunny hours, you need roughly 1.3–1.8 kW of panels for the AC alone, about 3 panels of 585W. Running it at night needs a battery: see the battery backup calculator. For a whole-home system, use the solar load calculator.
Frequently asked questions
How many units does a 1.5 ton inverter AC use per hour?
About 0.9 to 1.2 units per hour on a normal summer day once the room is cool, and closer to 1.5 units in peak heat.
How many units does a 1 ton AC use per hour?
About 0.6 to 0.8 units for an inverter model and 1.0 to 1.2 units for a non-inverter model.
How much does it cost to run an AC for a month in Pakistan?
A 1.5 ton inverter AC running 8 hours a day uses about 240 units a month, which costs roughly Rs 12,000 to Rs 15,000 depending on your slab and taxes.
Can I run an AC on solar panels?
Yes. A 1.5 ton inverter AC runs well on about 3 panels of 585W during sunny hours, with the grid or a battery covering cloudy periods and nights.
Prices and rules change often. This page was last reviewed on 12 November 2026. Spotted an outdated rate? Tell us and we'll update it.