Nowadays, there are many misconceptions surrounding various technologies — and air purifiers are no exception. Many modern consumers who are researching before buying an air purifier may come across outdated information that reflects older models or obsolete technologies that no longer represent current advancements.
In reality, air purification technology has evolved significantly, and many long-held beliefs are no longer true. Let’s debunk four common misconceptions about air purifiers below:
1. Air purifiers make the air dry
One of the most common misconceptions about air purifiers is that they make the air in your home too dry. Many people believe that air purifiers absorb moisture from the air, causing dryness and potentially affecting the respiratory system.
In reality, air purifiers do not remove moisture from the air at all. The filter simply draws in polluted air and traps or eliminates particles, dust, and viruses, then releases only clean and purified air back into the room.
2. Air purifiers consume a lot of electricity
Many people worry that running an air purifier will significantly increase their electricity bill, similar to using an air conditioner. In reality, air purifiers consume very little power.
For example, if an air purifier uses 55 watts, running one unit for 24 hours would consume:
55 × 1 ÷ 1,000 × 24 = 1.32 units of electricity.
If the electricity rate is 5 baht per unit, that equals 6.6 baht per day, or about 198 baht per month — which is quite economical compared to most household appliances.
3. Air purifiers are noisy
Another common misconception is that air purifiers are loud and disruptive to daily life. In fact, modern high-performance air purifiers are now designed to operate quietly and efficiently, without causing noise pollution.
For example, air purifiers that use TPA Technology can operate at a noise level of only 33 decibels, which is comparable to a soft whisper. In addition, many models come with a Sleep Mode, allowing the device to purify the air quietly — ideal for rest and sleep.
4. Air purifiers require frequent filter replacements
This misconception comes from the fact that most air purifiers traditionally use HEPA filters to trap particles, which need to be replaced every 3–6 months — making them costly to maintain over time.
However, this belief is now outdated. Thanks to modern innovations like TPA Technology, the filters are designed to be washable and reusable for the entire lifespan of the device. This means you no longer need to constantly buy replacement filters, making it a more economical and sustainable choice in the long run.
