How much electricity does a 50W air purifier consume per month in India?

A 50W air purifier running 12 hours a day consumes 0.60 kWh (units) daily, or 18 kWh per month. At an average rate of ₹7.50/unit, it costs approximately ₹135 per month.

How much does it cost to run an air purifier 24/7 continuously in India?

Running a 30W air purifier 24 hours a day for 30 days consumes 21.6 kWh (units) per month, costing ~₹162 per month at ₹7.50/unit.

What standards govern air purifier testing in India?

Air purifiers follow IS 302-2-97 / IEC 60335-2-65 electrical safety standards and IS 17574 Clean Air Delivery Rate (CADR) test protocols.

IS 302-2-97 & IS 17574 Standard Engine

Air Purifier Electricity Cost Calculator

Calculate exact monthly electricity consumption (kWh), hourly running cost, and annual bill for room air purifiers and HEPA filtration systems in India.

IS 302-2-97 & IS 17574 Testing Baseline Engine

Air Purifier Electricity Cost Calculator

[VERIFIED MANUFACTURER SPEC]

Select Verified Air Purifier Model

Electricity Tariff Bridge

Operating Hours per Day

Operating Days per Month

Monthly Cost

₹323.95

18 Units (360 hrs/mo)

Cost Per Hour

₹0.900

0.050 kWh / hour

Daily Cost

₹10.80

0.6 kWh / day

Annual Electricity Cost

₹3941.39

219 Units / year

🧾 Step-by-Step Power & Cost Audit Proof

Hourly & Daily Energy Consumption

(50W × 12 hrs/day) ÷ 1000 = 0.6000 kWh/day

0.6000 kWh / day (₹0.8999/hour)

Monthly Energy Consumption

0.6000 kWh/day × 30 days/month = 18.000 kWh/month

18.000 kWh (360.0 hours/month)

Annual Energy Consumption

0.6000 kWh/day × 365 days/year = 219.00 kWh/year

219.00 kWh / year

Monthly & Annual Electricity Cost

18.000 kWh × ₹18.00/unit = ₹323.95/month

₹323.95 / month | ₹3941.39 / year

IS 302-2-97 & IS 17574 Testing Disclosure:

Air purifier electrical safety testing follows IS 302-2-97 / IEC 60335-2-65 standards.
Power consumption varies by fan speed mode (Sleep: 5W–15W, Turbo: 50W–85W). Standby power draw is 0.5W–1.5W.
Calculated energy and cost figures preserve internal precision while rounding presentation values.

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How Air Purifier Electricity Consumption is Calculated

Air purifiers draw power primarily through their electric fan motor. While HEPA and active carbon filters are passive, fan speed directly dictates electrical power draw.

Daily Energy (kWh) = (Power Watts × Hours per Day) ÷ 1000

Monthly Energy (kWh) = Daily Energy (kWh) × Days per Month

Monthly Bill (₹) = Monthly Energy (kWh) × State Electricity Tariff Rate (₹/unit)

Worked Example (50W Purifier @ 12 hrs/day, 30 days/mo): 18.0 kWh/mo × ₹7.50 = ₹135.00 / month

Air Purifier Fan Speed Modes & Power Consumption

Fan Operating Mode	Typical Power (Watts)	Daily Usage	Monthly kWh (30 days)	Monthly Cost (₹7.50/unit)
Night / Sleep Mode	5 W – 10 W	8 hours/day	1.20 kWh	₹9.00 / month
Medium Auto Mode	25 W – 35 W	12 hours/day	10.80 kWh	₹81.00 / month
Turbo / High CADR Mode	50 W – 85 W	12 hours/day	18.00 kWh	₹135.00 / month
24/7 Continuous Operation (30W)	30 W	24 hours/day	21.60 kWh	₹162.00 / month

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