HomeNewsDo Air Purifier Use a Lot of Electricity? 5 Tips for Save Energy

Do Air Purifier Use a Lot of Electricity?


Many people who are considering purchasing an air purifier are concerned about their power consumption. The power level of an air purifier is affected by a number of factors such as purification technology, size, mode of operation, extra features and brand manufacturer. Air purifiers for domestic use are generally within 10-100W of power.


In this blog, we will cover several aspects of air purifiers' energy consumption to help users better understand how much power they consume and provide some energy-saving tips.


6 Aspects That Affect The Energy Consumption Of Air Purifiers


Output power: The main energy consumption of an air purifier is determined by the internal motor. The higher the power of the motor, the more efficiently it can circulate the air, and the same goes for the CADR value, the higher the CADR value, the higher the power. This is the most important factor that affects the energy consumption of an air purifier. We will present a set of data in the form of a table.





Running Time (H)

Power Consumption(kWh)




(25W * 24h) / 1000 = 0.6 kWh




(35W * 24h) / 1000 = 0.84 kWh




(45W * 24h) / 1000 = 1.08 kWh




(55W * 24h) / 1000 = 1.32 kWh




(65W * 24h) / 1000 = 1.56 kWh

Running time: Air purifiers usually need to run for a long time to purify air effectively, so their energy consumption is closely related to the running time. Long running time will lead to higher energy consumption. As you can see, an air purifier with a CADR of 600 uses only 1kwh of power for 24 hours of continuous operation.


Energy efficiency rating: Energy efficiency rating is one of the important criteria for evaluating the energy consumption of air purifiers. Generally speaking, air purifiers with higher energy efficiency ratings are able to achieve the same purification effect with lower energy consumption, thus saving energy consumption. This is due to the different levels of production technology of different suppliers.


Operating Modes: The different modes that your air purifier uses to operate can also affect your energy consumption. There are several common operating modes for air purifiers. 

1.Regular Mode, where the air purifier works at a constant speed to continuously purify the air with average energy consumption. 
2.Intelligent mode, where the air purifier automatically adjusts the purification speed according to the level of pollution in the air and the environmental conditions; this mode uses less energy. 
3.High-speed mode, working at maximum power, can quickly improve air quality in a short period of time and consumes the most energy. 
4.Sleep mode, this mode consumes the least amount of energy. Choosing the right working mode can save you money on your electricity bill.


Other functions: Some air purifiers have additional features such as negative ions, UV sterilisation, air quality testing, wireless charging air purifiers, these features will potentially increase energy consumption.


5 Tips of Air Purifier Use to Save Power


Put it in the right place
A location where the airflow in the room is easy to circulate. Do not have too many obstacles next to it. Improve air circulation efficiency.


Focus on outdoor air quality
When outdoor air quality is poor, windows need to be closed to prevent secondary contamination of the purified space.


Choosing the right size
Choose an air purifier that fits the size of the room. An oversized one will waste more energy. A smaller one will not purify the air effectively.


Choose the right running mode
Generally air purifiers have a variety of modes and timings that can be set. Choosing the right mode according to the manual can reduce unnecessary energy loss for you.


Regular cleaning and maintenance
Excessively dirty filters can block airflow through and cause the machine to effect more energy. Follow the instructions for regular cleaning and maintenance of the machine. You can read this article——How to clean an air purifier.

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