--- title: "Inverter AC Power Consumption Per Hour in Pakistan: Complete Guide & Calculator" description: "With electricity tariffs in Pakistan now well above **Rs. 50 per unit**, the question we hear most at AYS Online is simple: **“How much will this AC add to my bill?”** This guide gives you the exact figures — watts,…" url: "https://www.aysonline.pk/docs/inverter-ac-power-consumption-per-hour-in-pakistan/" updated: "2026-07-27" category: Air conditioning --- # Inverter AC Power Consumption Per Hour in Pakistan: Complete Guide & Calculator With electricity tariffs in Pakistan now well above **Rs. 50 per unit**, the question we hear most at AYS Online is simple: **“How much will this AC add to my bill?”** This guide gives you the exact figures — watts, amperes and units per hour — for **1 Ton, 1.5 Ton and 2 Ton DC Inverter ACs**, plus a live calculator that estimates your own monthly cost. Quick answer A **1.5 Ton DC Inverter AC** draws roughly **400W to 1800W** depending on how hard it is working — about **1800W at startup**, settling to **600–900W** in cruise mode once the room is cool. That averages close to **1 unit (kWh) per hour**. A 1 Ton uses around **0.7 units per hour**, and a 2 Ton around **1.5 units per hour**. A non-inverter AC of the same size runs at a *constant* 1800W, which is why inverters cut running cost by 40–60%. 1 Ton Inverter 300–1300 W ~0.7 units/hour 2.5–3.5 amps Rooms up to 150 sq ft 1.5 Ton · most popular 400–1800 W ~1.0 unit/hour 3.5–5.5 amps Rooms 150–225 sq ft 2 Ton Inverter 600–2600 W ~1.5 units/hour 6.0–8.5 amps Rooms 250+ sq ft ## 1. Understanding DC Inverter Technology A standard (non-inverter) AC runs its compressor at full speed until the room is cool, then switches off completely. When the room warms up again, it restarts at full power. That **start–stop cycle** is what consumes so much electricity — every restart pulls peak current. A **DC Inverter AC** uses a variable-speed compressor instead. It starts high to pull the room temperature down, then slows to a low-power “cruise mode” to hold it there. In practice a 1.5 Ton inverter may start near **1800 watts** and drop to **400–600 watts** once the room is settled — and it spends most of the day in that lower band, which is where the saving actually comes from. **Why this matters for your bill:** an inverter’s headline wattage is its *maximum*, not what it draws all day. Judge running cost on the cruise figure, not the peak. ## 2. AC Electricity Bill Calculator (Pakistan) Enter your room size, city, usage hours and tariff slab below. The calculator estimates the tonnage you need and what it will cost to run each month. ### AC size and electricity bill calculator Enter your room and how you use it. The size follows the room-size guide on this page, and the bill uses your own unit rate. Your room Room length (feet) Room width (feet) Which floor?Ground or middleTop floor Afternoon sunShadedSome sunStrong sun People in the room1 to 23 to 45 or more When does the AC run? SeasonDec to FebMar to MayJun to AugSep to Nov Runs from12 AM1 AM2 AM3 AM4 AM5 AM6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PM9 PM10 PM11 PM Until12 AM1 AM2 AM3 AM4 AM5 AM6 AM7 AM8 AM9 AM10 AM11 AM12 PM1 PM2 PM3 PM4 PM5 PM6 PM7 PM8 PM9 PM10 PM11 PM Solar panels?No, grid onlySolar + grid Your electricity meter Meter typePeak / off-peakOne rate Peak rate (Rs/unit) Off-peak rate (Rs/unit) Your rate (Rs/unit) 8 hours a day with an inverter 1 ton: 8 h off-peak (Rs. 4,558). Recommended size 1 ton 144 sq ft Inverter AC Rs. 4,558 a month, 132 units Non-inverter AC Rs. 8,287 a month, 240 units Inverter saves Rs. 3,729 a month, 45% less electricity InverterNon-inverter 1 ton recommended *Rs. 4,558* *Rs. 8,287* 1.5 ton *Rs. 6,630* *Rs. 12,431* 2 ton *Rs. 9,116* *Rs. 16,574* Floor standing *Rs. 13,260* *Rs. 24,862* [See 1 ton ACs from Rs. 89,000](https://www.aysonline.pk/1-ton-ac/) Estimates for a hot day at 24 to 26 °C once the room has cooled, using the base unit rates shown. Your actual bill also carries fuel price adjustments, surcharges, fixed charges and taxes, and depends on the model, thermostat, insulation and outdoor heat. Solar hours are counted as free power from your own panels. Estimates only. Your actual bill depends on your tariff slab, insulation, sunlight and how often doors are opened. ## 3. Power Consumption by Capacity ### A. 1 Ton DC Inverter AC Ideal for small bedrooms and offices up to 150 sq ft. A [1 Ton Inverter AC](https://www.aysonline.pk/1-ton-ac/) is the most efficient size we sell. - **Power draw:** 300W – 1300W (cruise around 450–700W) - **Units consumed:** roughly 0.7 kWh per hour on average - **Running current:** 2.5 – 3.5 amperes - **Estimated monthly bill:** Rs. 8,000 – 10,000 ### B. 1.5 Ton DC Inverter AC (Most Popular) The standard choice for bedrooms and TV lounges of 150–225 sq ft. A [1.5 Ton Inverter AC](https://www.aysonline.pk/1.5-ton-ac/) balances cooling power against running cost better than any other size. - **Power draw:** 400W – 1800W (cruise around 600–900W) - **Units consumed:** roughly 1.0 kWh per hour on average - **Running current:** 3.5 – 5.5 amperes - **Estimated monthly bill:** Rs. 12,000 – 15,000 ### C. 2 Ton DC Inverter AC Required for large lounges and drawing rooms of 250 sq ft and above. A [2 Ton Inverter AC](https://www.aysonline.pk/2-ton-ac/) cools far more air, and consumes accordingly. - **Power draw:** 600W – 2600W (cruise around 900–1400W) - **Units consumed:** roughly 1.5 kWh per hour on average - **Running current:** 6.0 – 8.5 amperes - **Estimated monthly bill:** Rs. 18,000 – 24,000 **How these bills are calculated:** based on **8 hours of use per day for 30 days at roughly Rs. 50 per unit**. If you are on a higher protected or non-protected slab, scale the figure accordingly — the calculator above lets you enter your own rate. ## 4. Comparison Table: Inverter vs Non-Inverter (Watts) | Capacity | Non-Inverter (fixed watts) | Inverter AC (variable watts) | Units / hour | Approx. saving | | --- | --- | --- | --- | --- | | **1 Ton** | ~1200 W constant | 300 – 1300 W | ~0.7 kWh | 40–50% | | **1.5 Ton** | ~1800 W constant | 400 – 1800 W | ~1.0 kWh | 50–60% | | **2 Ton** | ~2500 W constant | 600 – 2600 W | ~1.5 kWh | 40–50% | ## 5. Tips to Reduce Electricity Consumption 1. **Set the temperature to 26°C.** Every degree you raise the setpoint saves roughly 6% electricity. Going from 22°C to 26°C cuts around a quarter off the running cost. 2. **Clean the filters every two weeks.** Dirty filters restrict airflow and force the compressor to run harder and longer in high-power mode. 3. **Seal the room properly.** A gap under a door or an unsealed window keeps warm air coming in, which stops the inverter ever reaching low-power cruise. 4. **Use Eco or Gear mode.** Many models limit current draw to 50% or 70% — ideal overnight when you need holding power rather than fast cooling. 5. **Let it cruise.** Switching the unit off and on repeatedly forces repeated high-power startups and defeats the whole point of inverter technology. ## Frequently Asked Questions How many watts does a 1.5 Ton inverter AC use? A 1.5 Ton DC Inverter AC draws between **400 and 1800 watts**. It pulls close to 1800W at startup while cooling the room down, then settles to roughly **600–900W** in cruise mode. Averaged across a normal session that works out near **1000W, or 1 unit per hour**. How many units does an AC consume per hour in Pakistan? On average a **1 Ton inverter uses about 0.7 units per hour**, a **1.5 Ton about 1.0 unit**, and a **2 Ton about 1.5 units**. Multiply by your tariff rate to get the hourly cost — at Rs. 50 per unit, a 1.5 Ton costs roughly Rs. 50 an hour to run. How many amperes does a 1.5 Ton AC draw? A 1.5 Ton inverter draws **3.5 to 5.5 amperes** in normal running, peaking higher briefly at startup. A 1 Ton draws 2.5–3.5 amps and a 2 Ton draws 6.0–8.5 amps. This matters when sizing your wiring, breaker or UPS. Does an inverter AC really save 60% electricity? It can, but the honest range is **40–60%**, and it depends on how you use it. The saving comes from the compressor holding a low cruise speed rather than restarting at full power. A well-sealed, well-insulated room reaches that cruise state quickly and saves the most. A room with sun on the walls and an open door may never reach it, and the saving shrinks accordingly. What does it cost to run an AC for 8 hours a day? At around Rs. 50 per unit and 8 hours of daily use, expect roughly **Rs. 8,000–10,000 a month for a 1 Ton**, **Rs. 12,000–15,000 for a 1.5 Ton**, and **Rs. 18,000–24,000 for a 2 Ton**. Your slab rate makes a large difference — use the calculator above with your own tariff for a closer figure. [Shop Energy Saving Inverter ACs](https://www.aysonline.pk/air-conditioner/) Prices updated daily · 100% original with official warranty · zero down payment installments