Protected vs Unprotected Electricity Consumer: The 200-Unit Rule Explained (2026)
Crossing 200 units for one month costs you the protected rate for six months. See 2026 rates, how to regain…
Electricity
Inverter vs Non-Inverter AC in Pakistan 2026: Real Monthly Bill Compared
Updated October 2026. With electricity at up to Rs 47 a unit before taxes, the AC is now the biggest decision in a Pakistani household budget. We compared inverter and non-inverter ACs using NEPRA’s 2026 slab rates, so you can see the real effect on your bill, not just the units.
AC cost calculator → Enter your AC size, hours and other units to see your exact bill.How many units does an AC use?
| AC | Average power in summer | Units at 8 hours/day (30 days) |
|---|---|---|
| 1 ton inverter | about 0.75 kW | about 180 |
| 1 ton non-inverter | about 1.25 kW | about 300 |
| 1.5 ton inverter | about 1.1 kW | about 264 |
| 1.5 ton non-inverter | about 1.8 kW | about 432 |
These are averages over a cooling cycle at 26°C in 35–45°C weather. A small, shaded, well-sealed room uses less; a top-floor room facing west uses more.
The real cost: your whole bill changes slab
Take a home that uses 150 units a month without AC and is a protected consumer. Its energy charges are about Rs 2,208 (with FCA and 18% GST). Now add a 1.5-ton AC for 8 hours a day:
| DC inverter | Non-inverter | |
|---|---|---|
| Total units | 414 | 582 |
| Slab rate | Rs 38.95 | Rs 40.22 |
| Monthly bill (energy, FCA, GST) | Rs 19,570 | Rs 28,384 |
| Extra cost of the AC | Rs 17,362 | Rs 26,176 |
The AC itself uses 264 or 432 units, but the bill rises 9 to 13 times because the home loses its protected rate and every unit moves to a higher slab. The inverter saves about Rs 8,800 a month, or about Rs 44,000 over a five-month summer, which covers most of its higher purchase price in one season.
Running hours compared (1.5 ton, home using 150 other units)
| Hours per day | Inverter bill | Non-inverter bill |
|---|---|---|
| 6 hours | Rs 15,428 | Rs 22,406 |
| 8 hours | Rs 19,570 | Rs 28,384 |
| 12 hours | Rs 26,628 | Rs 45,491 |
When a non-inverter still makes sense
- You run the AC for only a few hours on the hottest days.
- It runs on solar during the day.
- Voltage in your area is very unstable and you can’t use a stabiliser (inverter boards are more sensitive).
7 ways to cut AC cost
- Set 26°C and use a ceiling fan alongside.
- Clean filters every two weeks in summer.
- Shade the outdoor unit and keep it clear.
- Close curtains on sunny windows; seal gaps under doors.
- Use the timer or sleep mode at night.
- Keep an eye on the 200-unit line with our protected status tracker.
- Consider solar for daytime cooling: see net metering vs hybrid.
Rates: NEPRA S.R.O. 279(I)/2026 residential slabs, FCA Rs 1.11/unit, GST 18%; fixed charges excluded. Power figures are typical averages, not lab measurements.