How many units (kWh) does a 1.5-ton ac use per month?

Running 8 hours a day at 1,600 W, a 1.5-ton ac consumes about 384 units per month — that's 12.8 units per day.

How much does it cost per month on the 200-unit slab?

On the Unprotected 101–200 unit slab (Rs. 22.95/unit) the energy charge alone is about Rs. 8813. Add ~Rs. 1152 for FPA + QTA and 18% GST on top.

Is a 1.5-ton ac cheaper to run on protected tariff?

Yes — at Rs. 11.69/unit (protected slab 1–100 units) the same 384 units cost only Rs. 4489, roughly half. But qualifying requires staying under 200 units total for 6 months, which is hard when this appliance alone uses 384 units.

Does running it during off-peak hours save money?

Only if you have a Time-of-Use (TOU) meter — typically 3-phase domestic, commercial A-2 or industrial B-2. On a flat single-phase domestic meter the tariff is the same 24 hours. See your DISCO's peak-hours page for exact windows.

Will solar make this appliance free to run?

Solar cuts the daytime portion of this load to nearly zero. Under the 2026 net-billing regime, exported units are worth Rs. 11–13 vs Rs. 27–42 for units you self-consume — so timing the appliance to run in daylight matters far more than it did on old net-metering.

1,600 W · 8 h/day typical

1.5-ton AC running cost in Pakistan (2026)

A 1.5-ton inverter AC — the most common size in Pakistani drawing rooms — draws about 1.6 kW. Running it 8 hours a day for 5 summer months typically adds Rs. 12,000–27,000 to a single month's bill.

How much energy does a 1.5-ton ac use?

Timeframe	Energy used	Notes
Per hour	1.60 kWh	Steady-state draw
Per day	12.80 kWh	8 hours of runtime
Per month	384 kWh	Full month at daily duty cycle
Per year	1920 kWh	5-month season

Note: the 1.5-ton ac briefly pulls 3,200 W during compressor start-up. Sustained draw settles at 1,600 W within ~30 seconds. Sizing a UPS or solar inverter must account for the surge.

Cost per slab — NEPRA Unprotected Residential (FY 2025–26)

Slab	Rs./unit	Per hour	Per day	Per month
1–100 units	16.48	Rs. 26.37	Rs. 211	Rs. 6328
101–200 units	22.95	Rs. 36.72	Rs. 294	Rs. 8813
201–300 units	27.14	Rs. 43.42	Rs. 347	Rs. 10422
301–400 units	32.03	Rs. 51.25	Rs. 410	Rs. 12300
401–500 units	35.24	Rs. 56.38	Rs. 451	Rs. 13532
501–600 units	36.66	Rs. 58.66	Rs. 469	Rs. 14077
601–700 units	37.80	Rs. 60.48	Rs. 484	Rs. 14515
Above 700 units	42.72	Rs. 68.35	Rs. 547	Rs. 16404

Energy charge only. Add ~Rs. 1152/month for FPA + QTA at typical rates, then 18% GST on the total. Electricity duty and PTV fee are also stacked — see the full electricity bill calculator for the complete tax pass-through.

Protected consumers (≤200 units, 6-month rule)

Slab	Rs./unit	Per month cost
1–100 units	11.69	Rs. 4489
101–200 units	14.16	Rs. 5437

Check your Protected consumer eligibility — the ≤200 unit rule is strict and one bad month resets the 6-month counter.

Cut the running cost

Choose an inverter with DC compressor — running watts drop by 30% vs a 5-star non-inverter.
Set the timer to shut off 30 minutes before you wake up — the room stays cool from residual load.
Insulate the roof if the AC room is on the top floor; it cuts run-time by up to 25%.
Move heavy AC use out of your DISCO's TOU peak window — see the peak-hours page for your DISCO.

Fine print

Older 1.5-ton fixed-speed ACs pull ~1,900 W. This calculator assumes a 3-star inverter at 1,600 W steady-state.

Frequently asked questions

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