Estimate What Each Appliance Costs to Run
Isolate how much an AC, fridge, iron or fan may add to your monthly bill. Enter watts, daily hours and an assumed Rs/kWh rate. Results are planning estimates from MEPCODBill — not an official appliance audit and not live bill data.
Compare devices, then refine household totals with the bill calculator or summer tips in reduce electricity bill in summer. Verify blended rates against NEPRA schedules and your last invoice.
How the Tool Works (Step-by-Step)
- Pick a preset or enter custom watts from the appliance label.
- Enter average hours used per day.
- Set a blended cost per unit (include tax cushion if you wish).
- Daily kWh = watts ÷ 1000 × hours; cost = kWh × rate; monthly ≈ daily × 30.
Inputs Explained
- Watts — nameplate power; for inverter ACs use a realistic average, not only max start watts.
- Hours — typical daily run time.
- Rate — your assumed Rs/kWh (blended with taxes is safer for budgeting).
What “1 Unit” Means
On electricity bills, 1 unit = 1 kilowatt-hour (kWh): 1,000 watts running for one hour. A 100 W fan for 10 hours ≈ 1 unit; a 2,000 W non-inverter AC for 30 minutes ≈ 1 unit.
The Mathematical Breakdown:
- 100W Fan: Running a ~100W ceiling fan for 10 hours uses about 1,000 Wh ≈ 1 unit.
- 2000W AC: A non-inverter ~2,000W AC for about 30 minutes uses roughly 1 unit (actual draw varies with room load).
- 1000W Iron: Pressing clothes with a ~1,000W iron for 2 hours uses about 2 units.
The Inverter vs. Non-Inverter Dilemma
When calculating running costs, especially for air conditioners and refrigerators, compressor technology changes the average watts you should enter. Marketing claims vary — use nameplate data or a wattmeter when possible.
Non-Inverter Appliances
These compressors are typically on or off. A ~2000W non-inverter AC often draws near its rated watts while the compressor runs, then shuts off when the room is cool — with higher starting spikes. Enter realistic average hours and watts rather than assuming continuous full load.
Inverter Technology
Inverters use variable-speed compressors. After the room cools, draw often falls well below nameplate max to maintain temperature. Savings depend on sealing, thermostat setpoint and outdoor heat — treat “up to 50%” marketing as a possible range, not a guaranteed fact for every home.
Tip: For overnight inverter ACs, enter average running watts (often far below nameplate max) for a more realistic estimate.
Identifying the Major Culprits
As a general rule of electrical physics, appliances that are designed to generate heat (thermal energy) or alter temperatures drastically consume the highest wattage. Here are the top offenders in a typical Pakistani household:
- Water Heaters (Geysers): Electric elements usually draw between 2000W and 3000W continuously.
- Electric Irons & Kettles: Averaging 1000W to 2000W, these generate intense heat instantly.
- Water Pumps (Motors): A 1-horsepower (HP) water pump draws approximately 746 Watts, but poor maintenance and mechanical friction can push this well over 1000W.
- Microwave Ovens: Averaging 800W to 1200W, they use massive amounts of energy but typically for very short durations.
Actionable Strategies to Reduce Running Costs
Slashing your bill doesn't always require sacrificing comfort; it often just requires a shift in habits:
- Optimize the AC Thermostat: Never set your AC to 16°C or 18°C. The compressor will never rest. Set it to 26°C and pair it with a slow-moving ceiling fan. Every degree raised saves up to 10% on energy costs.
- Defeat Phantom Loads: Modern TVs, decoders, and chargers draw 'vampire power' even when turned off with a remote. Unplug devices physically from the wall socket to save up to 5% annually.
- Refrigerator Placement: Ensure your fridge is at least 4 inches away from the wall to allow condenser coils to breathe. Do not place it directly in sunlight or next to the stove, as it will work twice as hard to stay cool.
When Results Differ from Your Bill
Real bills use slab or ToU rates, FPA/QTA, fixed charges and taxes. A single-appliance estimate at a flat Rs/kWh will not match the full invoice. Summing appliances also misses diversity (devices not all on together) and phantom loads.
How this estimate works
Core logic
Daily kWh = (watts ÷ 1000) × hours; cost ≈ kWh × rate; monthly ≈ daily × days
Assumptions
- Watts come from the nameplate or a realistic inverter average you enter
- Hours are typical daily run time; monthly uses a simple day multiplier
- Rs/kWh is a blended rate you assume (optionally with a tax cushion)
Limitations
- Flat Rs/kWh does not recreate slab jumps, ToU peak rates, FPA/QTA, fixed charges or arrears
- Summing appliances ignores diversity (devices not all on together) and phantom loads
- Not an official bill or certified energy audit
This calculator runs entirely in your browser. Inputs are not uploaded to our servers.
Sources & verification
Official sources sit above third-party summaries. Open these pages to confirm the current figure or process.
- NEPRA Tariff SchedulesCheck published rates when choosing a blended Rs/kWh assumption
Frequently Asked Questions (FAQs)
How much does a 1.5 Ton AC cost to run per hour in Pakistan?▼
A typical non-inverter 1.5-ton AC may draw around 1,800–2,200 W while the compressor runs (~1.8–2.2 units per full hour of compressor runtime). At a user-assumed blended rate of Rs. 60/kWh, that is roughly Rs. 108–132 per compressor-hour. An inverter unit often averages lower once the room is cool — enter your measured or label watts and hours above rather than treating any fixed Rs/hour figure as universal. Verify the blended rate against your bill and NEPRA schedules.
Does keeping the refrigerator running 24/7 consume too much electricity?▼
Refrigerators are meant to be left on constantly. A medium-sized fridge (about 250 Watts) does not run its compressor non-stop; the thermostat cycles it on and off. Effectively, it only 'runs' for about 10-12 hours a day. This results in about 2.5 to 3 units consumed daily. Turning it off at night will spoil food and force the compressor to work continuously at maximum power in the morning to regain the lost temperature, ultimately wasting more energy.
How do I find the exact wattage of my household appliance?▼
Every legally manufactured electrical appliance is required to have a silver specification sticker or embossed plate. Check the back of your TV, the inner frame of the fridge door, or the side panel of your AC outdoor unit. Look for a number followed by a 'W' (Watts) or 'kW' (Kilowatts). If the label only shows Amps (A) and Volts (V), multiply them together to find the Watts (e.g., 220V x 5A = 1100W).