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Truth About Air Purifiers Dry Out Air? Expert check

By Elysia
Elysia is a seasoned content enthusiast who has been steering the creative ship at Bebest since 2022.

Air purifiers are known for their remarkable ability to improve indoor air quality by removing pollutants and allergens. However, there’s a fascinating truth that often goes unnoticed: some air purifiers have the potential to inadvertently dry out the air. This surprising fact can lead to unexpected challenges, such as discomfort due to low humidity levels and skin irritation. While air purifiers offer undeniable benefits, it’s crucial to be aware of this potential issue and take measures to maintain a balanced indoor environment. Many users have shared their insights about this phenomenon, emphasizing the importance of balancing air purification and maintaining optimal humidity levels.

In exploring the fantastic truth about air purifiers and their potential to dry out the air, we delve into the intricacies of this lesser-known aspect and provide valuable guidance for achieving the best of both worlds. In this article, we will answer the question “Air purifiers dry out air, is that right?”.

air purifiers dry out air: Using air purifiers
Using air purifiers

The Truth about Air Purifiers Drying Out Air

Air purifiers dry out the air, is that right? Let’s explore this part. Firstly, air purifiers purify the air in your surroundings as it passes through an array of filters. The most effective models feature advanced filters like activated carbon and HEPA filters that capture a broad spectrum of particles and chemical gases.

The process of air purification involves several distinct stages:

  • Pre-filtration: As air is drawn into the device, a pre-filter extracts larger particles such as dust, pet dander, and hair from the air.
  • Activated carbon filtration eliminates volatile organic compounds (VOCs) and odors.
  • HEPA filtration: The final filter removes even minute pollutants like bacteria, viruses, pollen, mold, and smoke from the air.

After purification, the air purifier releases the cleansed air into your environment. It is important to note that air purifiers lack mechanisms to absorb and condense the air’s moisture, which means they do not contribute to air drying.

air purifiers dry out air 2
The Truth about Air Purifiers Dry Out Air

The Reasons Why You Think Air Purifiers Dry Out Air

Running an air purifier might give the impression of drier air, although this isn’t necessarily the case, and several factors contribute to this perception.

While air purifiers operate, they move air throughout the room, similar to a fan’s effect. This movement can create a sensation of drier air, even though it’s just air circulation. Moreover, warm air is often perceived as more humid since it can accommodate higher moisture levels. This warmth tends to ascend, primarily noticeable in upper home levels.

Conversely, cooler air is usually perceived as less humid and drier, often evident in lower home sections. As an air purifier circulates, it may slightly cool the surroundings, creating an illusion of drier air. However, the reality remains that, unless a dehumidifier accompanies the air purifier, the moisture content in the air remains unaffected. An air purifier doesn’t possess the capability to modify humidity levels.

Another factor contributing to dry air is cold air, which is prevalent during the colder months. In winter, external air is chillier and thus incapable of retaining as much moisture. Consequently, when your home draws fresh air from the outside in winter, the circulated indoor air naturally feels drier due to the cooler external air. So, it is false to say that air purifiers dry out air.

The reasons why you think air purifiers dry out air
The reasons why you think air purifiers dry out the air

How to Keep the Air Purifier Humidity Levels Up 

Do air cleaners reduce humidity? Given their widespread use, this question comes up frequently. It’s important to remember that air purifiers don’t care about controlling humidity levels; instead, they work primarily to remove airborne toxins. Therefore, the answer to whether operating an air purifier on humid days would help reduce moisture is no. Controlling humidity is not a feature of an air purifier. In fact, it’s possible that using an air purifier in these circumstances won’t have the desired result.

It’s also important to note that using a fan or air purifier when the air in your surroundings is already dry could make it feel even dryer. Although the increased air movement is suitable for cleaning the air, the lower humidity may make you feel uneasy.

The positive aspect is that you can use a variety of tactics to improve your indoor air quality and general level of comfort. While air purifiers cannot directly affect humidity levels, you can explore additional strategies and equipment for regulating humidity to make your home more comfortable and healthy.

Lower the fan’s speed

Adjusting the fan speed settings on your air purifier is a strategic approach to address concerns related to air dryness. Lowering the fan speed can effectively moderate the air circulation within your space. This alteration serves a dual purpose – it not only imparts increased warmth to the air but also counteracts the potential of excessive moisture evaporation from your skin.

This preventative measure plays a significant role in mitigating the likelihood of experiencing discomfort caused by dryness. A gentler fan speed creates an environment conducive to maintaining optimal moisture levels in the air, reducing the chances of the air purifier inadvertently contributing to a feeling of dryness.

air purifiers dry out air: Lower the fan's speed
Lower the fan’s speed

Furthermore, the controlled fan speed adjustment presents an opportunity to achieve a harmonious balance between air purification and humidity preservation. In doing so, you can effectively manage the potential consequences of air purifiers inadvertently drying out the air. This proactive approach offers a tangible solution to maintaining a comfortable and well-balanced indoor environment, ensuring that your air purifier operates in alignment with your desired comfort level. As a result, taking advantage of fan speed control becomes a practical strategy to optimize the benefits of air purification without compromising on humidity levels or succumbing to feelings of dryness.

Transport the air purifier

Ensuring adequate clearance between your air purifier and surrounding walls or furniture is a pivotal consideration to optimize air circulation. Obstructions can inadvertently prompt the device to exert more effort than necessary, potentially contributing to an imbalance in moisture levels. To counteract any perceived dryness in the air, consider strategically repositioning the machine to an alternative location. This relocation should prioritize providing ample space, thus facilitating unobstructed airflow and enhancing the purifier’s overall efficiency.

Transport the air purifier
Transport the air purifier

Furthermore, exploring different spatial arrangements within your living environment offers a proactive approach to counter the potential drying effect of air purifiers. By experimenting with varied placements, you can identify positions that strike a harmonious balance between effective air purification and optimal humidity levels. This empirical process allows you to pinpoint the most suitable location where the purifier can operate seamlessly without exerting any undesirable influence on the air’s moisture content.

In addition, evaluating the proximity of your air purifier to potential moisture sources can also play a role in mitigating dryness concerns. Placing the device away from sources of moisture reduction, such as air conditioning vents or open windows on dry days, can contribute to sustaining a more balanced environment. By strategically managing the air purifier’s placement and considering potential moisture factors, you can proactively counteract the notion that air purifiers inherently dry out the air.

Use a more compact air purifier

When selecting an air purifier, a crucial aspect to consider is opting for a unit that aligns appropriately with the dimensions of your living space. Ensuring the proper sizing of the air purifier can significantly impact its ability to effectively cleanse the air without inadvertently exacerbating dryness concerns. It is recommended that for areas spanning approximately 200 square feet, a compact air purifier is ideal, as it can adeptly address the purification needs of smaller zones while minimizing any potential impact on humidity levels.

If your living space expands beyond the 200-square-foot threshold, a prudent approach involves opting for a medium-sized air purifier. This category of devices offers increased capacity and coverage, encompassing up to 400 square feet or more. By following this general guideline of doubling the square footage, you can ensure that the air purifier remains proportionate to the room size, striking an effective balance between efficient air purification and preserving optimal moisture levels.

Use a more compact air purifier
Use a more compact air purifier

Purchase a humidifier

When facing excessive dryness caused by air purifiers, a practical solution involves introducing a home humidifier into your living space. By utilizing a humidifier, you can effectively counteract air purifiers’ potential drying effects while enhancing indoor air quality. Adding moisture provided by the humidifier is a valuable measure to mitigate irritation and discomfort that might arise from reduced humidity levels.

To strike an optimal balance between maintaining air purity and indoor humidity, you should consider incorporating a combination of an air purifier and a home humidifier. This strategic pairing ensures you can continue enjoying the benefits of enhanced air quality without experiencing the undesirable consequences of overly dry air. These air humidifier models feature specially engineered paper filters that optimize humidity levels and effectively eliminate contaminants from the water, ensuring a reliable source of moisture that won’t compromise your home’s air supply.

By harmonizing the functions of air purifiers and humidifiers, you can cultivate a harmonious indoor environment that promotes well-being and comfort throughout the winter.

Purchase a humidifier
Purchase a humidifier


In conclusion, while air purifiers offer a range of benefits in enhancing indoor air quality, it’s essential to address the potential concern of dryness that some users may experience. Understanding that air purifiers do not inherently dry out the air but can contribute to a perception of dryness due to increased air circulation, we’ve explored practical solutions to maintain a harmonious balance. By making thoughtful adjustments such as controlling fan speeds, ensuring proper placement, and considering the integration of a home humidifier, you can effectively counteract any drying effects while reaping the rewards of cleaner air. Follow Bebest to learn more about house tips.

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