Air Purifier Energy Calculator (Cost and kWh Usage)

Clean air is an essential aspect of a healthy life. However, many people are not aware of the energy consumption and cost of air purifiers. Although air purifiers are an excellent addition to any home, it is crucial to understand the cost implications of running one. In this article, we will dive into the energy consumption and cost of air purifiers, and provide some helpful tips to reduce your energy bills.


How To Use This Calculator

Using this energy calculator is a simple and will help you determine the costs of running your appliance. Click on ‘Calculate’ to use the predefined values, or enter your daily usage in hours, appliance watts, and your current energy costs in dollars. The calculator will provide you with the daily, monthly, and yearly results. It’s important to ensure the accuracy of the information entered to get the most accurate results.

Hours Used Per Day

Enter the number of hours you estimate the appliance will be on throughout the day. To use fractions of an hour please use a decimal point in the form.

For example: 1 hour and 30 mintes would be 1.5, and 3 hours and 15 minutes would be 3.25

Power Used in Watts

The calculator already includes a default average wattage. If your appliance uses a different wattage then enter it in the calculator.

Your Energy Rate in kWh

The calculator includes an average energy rate (price in $/kWh) to use for the calculation. This may not be the exact price that you’re currently paying for electricity. If you know your energy rate please enter your price per kilowatt-hour.

Energy Consumption

The energy consumption of an air purifier is an essential consideration when choosing this appliance. It is essential to understand that the energy consumption of an air purifier differs based on the size, model, and features of the appliance. Generally, air purifiers use between 25 and 200 watts of electricity. However, the average energy consumption of an air purifier is 50 watts per hour.

For example, if you run the air purifier for eight hours a day, you would consume 400 watts of electricity in a day. If the energy price is $0.12/kWh, the cost of running the air purifier per day would be $0.38. However, it is worth noting that the energy consumption and cost of running an air purifier may vary depending on the unique circumstances of the user.

Importance and Relevance Today

Air pollution is a significant problem in many parts of the world. Air purifiers provide a convenient and effective solution to purify indoor air quality. In addition, air purifiers are essential for people with respiratory problems, allergies or asthma. By removing airborne irritants, allergens, and pollutants, air purifiers can improve the air quality and provide health benefits.

Cost in Dollars of Energy Usage

Calculating the cost of energy usage for an air purifier is relatively simple. The formula for calculating the cost of energy usage is as follows:

Energy Cost = (Wattage x Hours Used) / 1000 x Energy Price per kWh

Using the default values, if an air purifier uses 25 watts and is used for eight hours a day, the daily cost of energy usage would be:

Energy Cost = (25 x 8) / 1000 x 0.12 = $0.02 per day

Similarly, the monthly cost would be:

Monthly Energy Cost = (25 x 8 x 30) / 1000 x 0.12 = $0.72 per month

And the yearly cost would be:

Yearly Energy Cost = (25 x 8 x 365) / 1000 x 0.12 = $8.76 per year

Money Saving Tips

  1. Check the air purifier’s CADR rating (Clean Air Delivery Rate). The higher the rating, the more effective the air purifier is at filtering pollutants. A better-performing air purifier can clean your air faster and decrease energy usage.
  2. Use the air purifier in the right-sized room. If you use a small air purifier in a large room, it will have to work harder and consume more energy to clean the air. Therefore, it is important to choose an air purifier that matches the room size.
  3. Clean or replace the air filters regularly. Dirty air filters can decrease the performance of the air purifier and increase energy consumption. It is essential to keep the filters clean and replace them when necessary.
  4. Turn off the air purifier when not in use. Even when on standby mode, air purifiers can still consume energy. Turning off the air purifier when not in use can save energy and reduce your energy bills.


Air purifiers are an essential appliance for maintaining good indoor air quality. However, it is important to understand the energy consumption and cost of running an air purifier. By choosing an energy-efficient air purifier and implementing some simple money-saving tips, you can reduce your energy bills and improve your indoor air quality.

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