Thinking of buying a kitchen chimney but worried about the electricity bill? You are not alone. Almost every Indian family asks this question before buying – “Chimney toh le lenge, par light bill kitna badhega?”
We daily get this question from customers at Kitchen Chimney. And the good news will surprise you.
Short Answer: NO. A kitchen chimney will increase your electricity bill by only Rs.25 to Rs.68 per month, even if you use it for 1 hour daily.
Yes, that’s less than the cost of 1kg onion. In this guide, we will show you the real calculation from Watt to Units to Rupees, so you can see for yourself. No guesswork, only real numbers.
An average Indian family uses a chimney for 45 to 60 minutes daily during cooking. At that usage, a modern filterless auto-clean chimney consumes only 5 to 7 units per month. Let’s break it down completely.
A 180W kitchen chimney used for 1 hour daily consumes 5.4 units per month and costs only Rs.48 – Rs.59 per month at Rs.9-11 per unit. Even a powerful 250W chimney costs less than Rs.83 per month.
How Much Electricity Does a Kitchen Chimney Consume?
A chimney is not like an AC or geyser that consumes thousands of watts. It has only 3 small parts that use electricity:
1. Motor: This is the main part that creates suction. It consumes 150W to 250W, and only runs when the chimney is ON.
2. LED Lights: For lighting your cooking area. Very low consumption, only 1.5W to 3W.
3. Auto-Clean Heater: This is a heating element that melts the oil inside. It consumes 800W – 1200W but runs for only 10 minutes, once in every 10-15 days. So its monthly cost is almost zero.
To understand the bill, you need to understand one formula: 1000 Watt used for 1 hour = 1 Unit [1 kWh]. Your electricity bill is calculated on units.
Table 1: Component-Wise Power Consumption of a Kitchen Chimney
| Component | Power Consumption in Watt | When Does It Consume Power? | Impact on Bill |
| :— | :— | :— | :— |
| Suction Motor | 150W – 250W | Only when chimney is ON | Main consumption |
| LED Lights | 1.5W – 3W | Only when lights are ON | Negligible – Less than Rs.1/month |
| Auto-Clean Heater | 800W – 1200W | 10 mins / 15 days only | Only Rs.2 – Rs.3 per month |
| Touch Panel / Sensors | <1W | Always in standby | Almost Zero |
Conclusion: The motor is the only part that matters for your bill. Everything else is negligible.
Chimney Wattage According To Type – Not All Chimneys Use Same Power
Many people think a higher suction chimney will double the electricity bill. That’s not true. The difference is very small. A modern BLDC motor chimney can give you 1500 m3/hr suction while consuming less power than an old 1200 m3/hr normal motor.
If you are looking for low power consumption, you should always choose a filterless chimney with a BLDC motor.
Looking for the most energy-efficient option? Check our energy-efficient filterless auto-clean chimneys that consume only 180W even at 1500 m3/hr suction.
Table 2: Type Wise Wattage & Monthly Units Comparison [1 Hour Daily Use]
| Chimney Type | Motor Wattage | Auto-Clean Wattage | Monthly Units [1 hr/day x 30 days] | Monthly Cost @ Rs.9/Unit |
| :— | :— | :— | :— | :— |
| 60cm Filterless Auto-Clean [1200-1500 m3/hr] | 180W – 210W | 1000W [10 mins/15 days] | 5.5 – 6.5 Units | Rs.49 – Rs.58 |
| 90cm Filterless Auto-Clean [1500-1800 m3/hr] | 210W – 250W | 1200W [10 mins/15 days] | 6.5 – 8.0 Units | Rs.58 – Rs.72 |
| Baffle Filter Chimney [Normal Motor] | 190W – 230W | N/A | 5.7 – 7.0 Units | Rs.51 – Rs.63 |
| Chimney with BLDC Motor [Most Efficient] | 130W – 160W | 800W | 4.0 – 5.0 Units | Rs.36 – Rs.45 |
| Normal Chimney with Cassette Filter | 200W – 250W | N/A | 6.0 – 7.5 Units | Rs.54 – Rs.67 |
As you can see, a BLDC motor chimney saves almost 40% electricity compared to a normal motor chimney. Over 5 years, you save more than Rs.1500 just on electricity.
Real Calculation: How to Calculate Your Chimney’s Electricity Bill
This is the most important part. You can calculate your exact bill in 30 seconds with this simple formula used by electricity boards.
The Simple Formula:
> Monthly Bill in Rupees = [Watt / 1000] x Hours Per Day x 30 Days x Per Unit Cost in Rs.
Where to find Watt? Check the sticker on your chimney motor or the product page on every product mentions its wattage.
Example 1: Normal Family – Using Chimney for 1 Hour Daily
This is the case for 90% of families. Cooking breakfast + lunch/dinner = approx 1 hour of chimney use.
Chimney Wattage = 180W [Standard 60cm Filterless Model]
Per Unit Cost = Rs.9
Calculation = [180/1000] x 1 hr x 30 days x 9 = 0.18 x 30 x 9 = 5.4 Units = Rs.48.6 per month
If your per unit cost is Rs.11, the cost will be Rs.59.4 per month. That’s it.
Example 2: Heavy Cooking Family – Using Chimney for 2 Hours Daily
For joint families or those who cook 3 times a day.
Chimney Wattage = 180W
Per Unit Cost = Rs.9
Calculation = [180/1000] x 2 hrs x 30 days x 9 = 10.8 Units = Rs.97.2 per month
Even with heavy 2-hour daily use, your bill is less than Rs.100.
Example 3: How Much Does Auto-Clean Cost Per Month?
Many people fear auto-clean will increase the bill because its heater is 1000W. Let’s calculate.
Heater Wattage = 1000W
Usage = 10 minutes [0.16 hours] every 15 days = 20 minutes per month = 0.33 hours per month
Calculation = [1000/1000] x 0.33 hrs x 9 = 0.33 Units = Rs.2.97 per month
Auto-clean costs less than Rs.3 per month. But it keeps your motor clean, which helps the motor run efficiently and actually SAVES electricity.
Table 3: Ready-Made Monthly Cost Table – Find Your Bill in 5 Seconds
This table is made for Google Featured Snippet. Find your daily usage and know your bill instantly.
| Your Daily Chimney Usage | Chimney Wattage | Monthly Units Consumed | Monthly Cost @ Rs.9/Unit | Monthly Cost @ Rs.11/Unit |
| :— | :— | :— | :— | :— |
| 30 mins / day | 180W | 2.7 Units | Rs.24.3 | Rs.29.7 |
| 1 hour / day [Most Common] | 180W | 5.4 Units | Rs.48.6 | Rs.59.4 |
| 1 hour / day | 250W [Powerful 90cm] | 7.5 Units | Rs.67.5 | Rs.82.5 |
| 1.5 hours / day | 180W | 8.1 Units | Rs.72.9 | Rs.89.1 |
| 2 hours / day [Heavy Use] | 180W | 10.8 Units | Rs.97.2 | Rs.118.8 |
| Auto-Clean Only | 1000W | 0.33 Units | Rs.2.97 | Rs.3.63 |
Chimney vs Other Kitchen Appliances: Shocking Comparison
You will be shocked to know that your chimney is the LOWEST power consuming appliance in your kitchen.
We compared it with appliances you use daily. The result will clear all your doubts.
Table 4: Appliance Power Consumption Comparison Table [1 Hour Daily Use @ Rs.9/Unit]
| Kitchen Appliance | Power Consumption | Monthly Cost [1 hr/day] | Compared to Chimney |
| :— | :— | :— | :— |
| Kitchen Chimney [180W] | 180W – 250W | Rs.48 – Rs.68 | Base – Lowest |
| Mixer Grinder | 500W – 750W | Rs.135 – Rs.202 | 3x More than Chimney |
| Microwave Oven | 1200W | Rs.324 | 6.5x More than Chimney |
| Induction Stove | 2000W | Rs.540 | 11x More than Chimney |
| 1.5 Ton Split AC | 1500W | Rs.405 | 8x More than Chimney |
| Water Geyser | 2000W | Rs.540 | 11x More than Chimney |
| Electric Kettle | 1500W | Rs.405 | 8x More than Chimney |
Need high suction for oily Indian cooking but worried about power? Our chimneys for heavy Indian cooking with high suction at low power give you 1500 m3/hr at just 180W – View 1500 m3/hr.
Insight: You run your mixer for only 10 minutes but it consumes more electricity than running your chimney for 30 minutes. So why worry about the chimney?
5 Factors That Increase Your Chimney’s Electricity Bill
If your bill seems higher, it is not because of the chimney’s wattage, but because of these 5 mistakes:
1. Higher Suction Power on Low Smoke: Many people always run the chimney at max speed [Speed 3]. For normal cooking like boiling dal or making roti, Speed 1 is enough. Speed 3 consumes 20% more power. Use auto-mode if available.
2. Leaving LED Lights ON for Hours: Though LED consumes very little, leaving it on overnight as a night lamp is a waste.
3. Using Auto-Clean Too Frequently: Some users press auto-clean every 2-3 days. You only need it once every 10-15 days for normal cooking and once a week for very oily cooking.
4. Dusty Motor & Clogged Filters: When filters are clogged with oil, the motor has to work harder to pull smoke. This increases power consumption by 15-20% and reduces suction. Regular filter cleaning is a must for baffle filter chimneys.
5. Old Normal Motor vs New BLDC Motor: Old normal motors are inefficient. A BLDC motor is the latest technology which uses magnets instead of brushes. It consumes 40% less power, makes less noise, and lasts 2x longer.
Does Auto-Clean Chimney Consume More Electricity?
This is the biggest myth. People think “Auto-clean means extra heater, extra electricity.”
Reality: Auto-Clean SAVES Electricity.
As we calculated above, auto-clean costs only Rs.3 per month. But if you DON’T have auto-clean, oil gets deposited inside the motor and fan. This makes the motor heavy and slow. A dirty motor can consume 25% more power to give the same suction.
With auto-clean, the oil is collected in a separate oil collector tray. The motor remains clean and efficient for years.
Want a chimney that cleans itself and saves power? Check our auto-clean chimney collection with thermal cleaning.
For Indian cooking with lots of tadka and frying, an auto-clean chimney is not a luxury, it’s a necessity. And it only adds Rs.3 to your bill.
7 Pro Tips to Reduce Chimney Electricity Consumption to Almost Zero
Follow these tips to keep your bill under Rs.40 per month:
1. Use The Right Suction Speed: Use Speed 1 for low smoke [roti, rice, tea], Speed 2 for medium frying, and Speed 3 only for heavy frying/tadka. This saves 15-20% power.
2. Clean Filters Every 15 Days: For baffle filter models, soak filters in warm water + dish soap for 15 minutes. For filterless models, just empty the oil collector tray once a month. A clean chimney = low power.
3. Turn OFF Lights When Not Needed: Don’t use chimney lights as kitchen decoration lights.
4. Don’t Run Chimney for 20 Mins After Cooking: Running it for 3-5 minutes after cooking is enough to clear remaining smoke. No need to run for 15-20 minutes.
5. Choose a BLDC Motor Chimney: This is the single best investment. It saves Rs.20-25 per month and is super silent. Over 7 years, you save more than Rs.2000.
6. Correct Ducting Installation: If your duct pipe has too many bends or is too long [more than 4 meters], the motor works harder. Keep duct length short and bends less than 2 for best efficiency.
7. Use Auto-Clean on Time: Press auto-clean every 10-15 days. Don’t delay it for months. A clean motor consumes less power.
Final Verdict: Is Kitchen Chimney Worth The Electricity Cost?
et’s do the final ROI [Return on Investment].
You pay: Rs.50 per month for chimney electricity = Rs.600 per year.
You SAVE:
Rs.3000 – Rs.5000 per year on kitchen wall tile cleaning and repainting. Without a chimney, oil makes tiles yellow and sticky in 6 months.
Doctor bills for cough, allergy, and breathing issues caused by smoke and oil fumes.
Hours of cleaning time every week.
So you pay Rs.50 to save Rs.500 and protect your family’s health. Is it worth it? 100% YES.
A kitchen chimney is the cheapest health insurance for your kitchen. The electricity cost is so low that you won’t even notice it in your total home bill which is usually Rs.1500 – Rs.3000.
FAQs – People Also Ask
How many units does a kitchen chimney consume per month?
A kitchen chimney consumes only 5 to 8 units per month if used for 1 hour daily. A 180W chimney consumes 5.4 units and a 250W chimney consumes 7.5 units per month.
Does 1800 m3/hr chimney consume more electricity than 1200 m3/hr?
Slightly more, but not much. A 1800 m3/hr chimney with a BLDC motor can actually consume LESS power [160W] than an old 1200 m3/hr normal motor [210W]. Always check the wattage, not just suction power.
How much does auto-clean function cost in electricity?
Auto-clean heater runs only for 10 minutes every 15 days. It consumes only 0.33 units per month which costs just Rs.2 to Rs.4 per month.
Which chimney consumes least electricity – Baffle or Filterless?
Filterless chimneys with BLDC motors consume the least electricity [130W-160W]. Baffle filter chimneys consume slightly more [190W-230W] and also need more maintenance.
Can I run a kitchen chimney on an inverter?
Yes, easily. A chimney only needs 180W-250W, which any home inverter can handle. Even a 600VA inverter can run a chimney. It consumes less power than a cooler or TV.
