The range of air purifiers is vast and the specifications vary significantly per model. Before you make a choice, it is useful to know which features really matter. Below, we list the most important points of attention.
1. Filter type: opt for HEPA
The filter determines what an air purifier actually removes from the air. A HEPA filter, specifically HEPA13, filters out 99.97% of the smallest particles such as fine dust, pollen, bacteria, viruses, and even microplastics. Some cheaper devices work with a lower filter class or only with a simple pre-filter, which is noticeably less effective for fine particles.
2. CADR and room size
The CADR (Clean Air Delivery Rate) indicates how much clean air a device delivers per hour. Always combine this with the maximum room size specified by the manufacturer, and it is better to be generous than stingy. A device that just meets the requirements for your room will have to run on a higher setting more often.
3. Noise level
The noise level in decibels (dB) is particularly important for the bedroom. A difference of 10dB feels like a doubling of the sound. Always check the dB level at the lowest setting, as that is the setting you will likely use at night.
4. Energy consumption
An air purifier that stays on all day or night affects your energy bill. Pay attention to the wattage: an energy-efficient model with, for example, 45W costs significantly less in electricity than a model that continuously consumes 100W or more.
5. Filter costs and maintenance
Filters must be replaced regularly, usually every 6 to 12 months depending on usage and air quality. Check the price of replacement filters beforehand and how easy they are to replace; this also determines the long-term costs.
6. Additional features
- Sleep timer: useful for having the device turn off automatically.
- Night mode: a quiet setting with dimmed or disabled lighting for use in the bedroom.
- Multiple settings: so you can switch between power and noise level, depending on the situation.
- Filter indicator: shows when a filter needs to be replaced.
7. Compare before you buy
Take the time to compare the specifications of different brands before making a purchase. Look not only at the price, but especially at CADR, filter class, noise level, and energy consumption. This prevents you from buying a device that looks good but is disappointing in practice.
Our advice
We recommend using these points as a checklist when comparing air purifiers. During the development of the Dynter AirPure Plus PA244, we paid attention to exactly these points: a CADR of 260m3/h, a HEPA13 filter with four-stage filtration, a noise level starting at 28dB, an energy consumption of 45W, and features such as a sleep timer and night mode. The device is suitable for rooms up to 55m2, making it usable in most households.
Do you want to review all the specifications at your leisure before making a decision? View the AirPure Plus PA244 product page.