An air purifier that is too small for your room has to work harder to achieve results and therefore runs more frequently on a high, noisier setting. A model with more than enough capacity keeps the air clean while the device can continue running quietly. In this article, we explain how to choose the right size air purifier for your room.
Why room size is so important
Every air purifier has a maximum space for which it is effective, often indicated in square meters. This value is based on the CADR (Clean Air Delivery Rate), which is the amount of filtered air the device can deliver per hour. The larger the room, the higher the CADR needs to be to refresh the air within a reasonable amount of time. An air purifier intended for a 20m² bedroom will simply not achieve the same result in a 45m² living room.
How do you calculate what you need?
First, measure the surface area of the room where the device will be placed (length x width in meters). Next, look at the stated maximum m² of an air purifier and preferably choose a model whose maximum capacity is well above the actual room size. This way, the device does not have to run continuously at the highest setting to remain effective, which is also beneficial for noise levels and filter lifespan.
Also pay attention to ceiling height and open layouts
A high ceiling or an open connection between, for example, a kitchen and living room increases the effective air volume, even if the floor area remains the same. In that case, it is wise to calculate a bit more generously than just the bare square meters of the room.
Guidelines per room
- Small bedroom or office (up to 20m²): a compact air purifier with a lower CADR is often sufficient.
- Medium-sized living room or bedroom (20 to 40m²): choose a model with sufficient reserve capacity so that the device does not have to run continuously at the highest setting.
- Large or open living space (40 to 55m²): a higher CADR air purifier is needed here, such as the PA244.
- Very large or open-plan spaces (over 55m²): consider multiple devices or a model with a higher capacity.
Our advice
In our experience, people often prefer to choose a model that is slightly too large for their room rather than one that is too small. A generously sized air purifier can continue to run on a low, quiet setting while still keeping the air clean, whereas a model that is too small has to work harder. The Dynter AirPure Plus PA244 has a CADR of 260m³/h and is suitable for rooms up to 55m², with three settings and a noise level of 28 to 60dB. This makes this model suitable for both an average bedroom and a spacious living room, without the device having to run at full power continuously.
Still unsure which size fits your room? Measure the space and check the specifications of the AirPure Plus PA244 to see if it suits your situation.