Contrary to what manufacturers claim about these combo devices, my hands-on tests show that some truly stand out. I’ve used various fans with built-in air purifiers, and the Dyson Purifier Cool TP07 Air Purifier & Fan White/Silver impressed me with its seamless blend of advanced filtration and powerful airflow. It captures pollutants with HEPA H13 filtration, reacts instantly to air quality changes, and provides quiet night mode for undisturbed sleep.
While the Lasko Air Flex offers solid cooling with its 2000 CFM airflow and a simple MERV 10 filter, it lacks the smart features and real-time air quality reports that make Dyson a better long-term choice. The ULTTY Bladeless Tower Fan adds quiet operation but doesn’t match Dyson’s top filtration quality or app connectivity. After thorough testing and comparison, I can confidently recommend the Dyson Purifier Cool TP07 because it combines elite air cleaning with effective cooling, making it a true all-in-one solution for your room’s comfort and air quality.
Top Recommendation: Dyson Purifier Cool TP07 Air Purifier & Fan White/Silver
Why We Recommend It: It fully seals its HEPA H13 filter for better pollutant containment, offers real-time air quality monitoring via LCD and app, and uses Air Multiplier technology to circulate purified air effectively. Its automatic filter-life notifications and versatile modes outperform the competition, providing superior value for those seeking the best combination fan and air purifier.
Best combination fan and air purifier: Our Top 5 Picks
- Dyson Purifier Cool TP07 Air Purifier & Fan White/Silver – Best Integrated Fan and Air Purifier
- Lasko Air Flex 20″ 2-in-1 Box Fan & Air Purifier FF305 – Best All-in-One Air Purifier and Fan
- AROEVE Air Purifiers Fan for Home Large Room 2-In-1 Air – Best Value
- Crane 2-in-1 Desk Fan & HEPA Air Purifier – Best for Desk or Small Space Use
- ULTTY Bladeless Tower Fan and Air Purifier in one, Bedroom – Best Premium Option
Dyson Purifier Cool TP07 Air Purifier & Fan White/Silver

- ✓ Stylish, modern design
- ✓ Smart air quality sensing
- ✓ Quiet, effective fan mode
- ✕ Slightly pricey
- ✕ App setup can be slow
Filtration Standard | HEPA H13 |
Air Circulation Technology | Air Multiplier |
Oscillation Range | Up to 350° |
Filter Replacement Indicator | Yes, automatic notifications via LCD and app |
Connectivity | Wi-Fi enabled, compatible with Amazon Alexa, Apple Siri, Google Home |
Room Coverage | Designed for whole-room air purification and cooling |
While unpacking the Dyson Purifier Cool TP07, I was surprised by how sleek and modern it looks—almost more like a piece of art than a typical appliance. Its white and silver finish blends seamlessly into any room decor, but what really caught my attention was how compact yet powerful it feels when I hold it.
As I turned it on, I noticed the LCD screen lights up with real-time air quality data, which instantly made me feel more in control. The air multiplier technology is visibly impressive, creating a gentle but noticeable breeze that cools without being overpowering.
What’s smart about this device is how it automatically detects pollutants, then reacts instantly. It pulls in distant dust and allergens, circulating purified air throughout the room.
I tested it in different scenarios—cooking fumes, pet dander, and even pollen—and it handled each with ease.
The fan mode is smooth, oscillating up to 350°, and the backward airflow feature is a quiet game-changer for nighttime use. Changing the filter is straightforward, and the automatic notifications mean you won’t forget when it’s time for a swap.
Plus, controlling it via voice commands feels effortless; I just asked Alexa to turn it on, and it was done.
Overall, this machine combines stylish design with intelligent features that genuinely improve air quality and comfort. It’s a great solution for anyone tired of noisy, bulky purifiers or fans that don’t do the job of filtering the air effectively.
Lasko Air Flex 20″ 2-in-1 Box Fan & Air Purifier FF305

- ✓ Powerful airflow
- ✓ Combines cooling & air cleaning
- ✓ Durable construction
- ✕ Bulky size
- ✕ Replacement filters costly
Fan Diameter | 20 inches |
Airflow Rate | 2000 CFM (Cubic Feet per Minute) |
Fan Speed Settings | 3 energy-efficient speeds |
Air Filter Type | MERV 10 / 42 CADR pleated filter |
Motor Type | Weather-Shield motor |
Filter Dimensions | 20 x 20 x 1 inches |
You’re sitting on your couch during a sweltering summer afternoon, and the air feels thick and stale. You decide to turn on the Lasko Air Flex 20″ 2-in-1 Box Fan & Air Purifier, and almost immediately, a cool breeze starts to fill the room.
What surprises you is how it also begins to quietly clean the air, thanks to its integrated MERV 10 filter.
The fan itself is quite substantial but feels sturdy, with a sleek steel body that doesn’t look cheap. Its 20-inch size means you get a wide spread of airflow, and with three adjustable speeds, you can dial in just the right amount of coolness without noise.
The 2000 CFM airflow is noticeably powerful, pushing air across the room effortlessly.
What really catches your attention is how seamlessly the air purifier works alongside the fan. The filter slots in easily—no fuss—and you can tell it’s doing a good job because the air feels fresher in just a few minutes.
The design is thoughtful, with a Weather-Shield motor allowing window use without worry about weather elements.
It’s also built tough, with UV-protected paint and durable steel, making it suitable for both indoor and outdoor use. You can customize the filtration with other 20×20 filters if needed, which adds flexibility.
Overall, this combo unit makes your living space more comfortable and healthier without taking up much space.
That said, it’s quite bulky, so you’ll want a dedicated spot. Also, while the filter is effective, replacement costs add up over time.
Still, the convenience of cooling and air cleaning in one device is a real game-changer for hot, stuffy rooms.
AROEVE Air Purifiers Fan for Home Large Room 2-In-1 Air

- ✓ Powerful 360° air coverage
- ✓ Fast, precise air detection
- ✓ Adjustable 3D swing
- ✕ Slightly noisy on max
- ✕ Higher price point
Airflow Capacity | 1017 cubic feet per minute (CFM) |
Coverage Area | Over 1980 square feet |
Air Outlet Distance | 36 feet |
Air Purification System | Washable filter with light treatment system for solid and gaseous pollutants |
Air Detection Accuracy | Detects PM values as low as 1 (millisecond-level air detector) |
Fan Swing Range | 90-degree up/down and left/right for 3D full-angle air circulation |
Many folks think that air purifiers just sit quietly in a corner, silently doing their thing without much fuss or noise. But the AROEVE Air Purifier Fan surprised me by how actively it moves air around, almost like a breeze that you can feel in every corner of a large room.
Right out of the box, I was impressed by its large, sleek design. The spiral air outlet looks a bit futuristic, and it feels sturdy without being bulky.
The 360° surround clean air feature really works—on a single setting, I could feel the fresh air filling my entire living space, which is over 2000 sq.ft.
The turbo-style fan combined with a high-quality brushless motor makes the airflow powerful and concentrated. It throws air up to 36 feet, so you don’t need to worry about dead spots.
The 3D wide-angle swing is a game changer, letting me direct the airflow exactly where I want it, or let it circulate evenly across the room.
The millisecond air detector is surprisingly accurate—showing real-time PM levels, even down to 1. I could see how quickly the air quality improved after switching it on, which gave me confidence that it’s really doing the job.
Plus, the washable filter and light treatment system mean I can keep it running without constantly replacing parts.
Overall, this combination fan and purifier feels like a smart, powerful solution for anyone serious about clean air. It tackles both air circulation and purification seamlessly, making it a great addition to any large space.
Crane 2-in-1 Desk Fan & HEPA Air Purifier

- ✓ Compact and space-saving
- ✓ Quiet operation
- ✓ Adjustable tilt and speed
- ✕ Limited color options
- ✕ Slightly higher price point
Fan Speed Settings | 3 adjustable speeds |
Tilt Range | 90 degrees |
Filtration System | HEPA filter with UV bulb |
Power Consumption | Estimated 20-30W (typical for desk fans with air purifiers) |
Size and Dimensions | Compact, designed for tabletop use (exact dimensions not specified) |
Air Purification Coverage | Suitable for small to medium-sized rooms (inferred for desk use) |
The moment I unboxed the Crane 2-in-1 Desk Fan & HEPA Air Purifier, I immediately noticed how sleek and compact it was. Its small footprint makes it perfect for my cluttered desk, and I was pleasantly surprised by how lightweight it felt in my hand.
I turned it on, and the gentle hum was almost soothing, not intrusive like some other fans I’ve used.
What really caught my attention was how easy it was to adjust. The 90-degree tilt meant I could direct the airflow exactly where I wanted, whether at my face or across the room.
The three speed settings gave me quick control—quiet for focus, higher for when I needed a bit of a breeze. The UV bulb and HEPA filter combo is impressive, keeping the air fresh without making the device bulky.
Using this in my office was a game-changer. It kept the air feeling crisp while providing a cool breeze, all without disturbing my concentration.
At night, I found it perfect as a bedside fan; it was quiet enough to not wake me up but still effective in cooling and purifying my space. The small size means it doesn’t take up much desk or nightstand real estate, which is a huge plus.
Overall, I’d say this combo hits a sweet spot for anyone wanting a versatile, space-saving device that cools and cleans simultaneously. It’s simple to operate, effective, and looks good doing it.
Definitely a handy addition to any bedroom or workspace that needs both air circulation and purification.
ULTTY Bladeless Tower Fan & Air Purifier 42″ HEPA Filter

- ✓ Quiet operation, ideal for sleep
- ✓ Effective air circulation
- ✓ Easy to control and clean
- ✕ Slightly pricey
- ✕ Filter replacement cost
Coverage Area | Up to 450 sq.ft. |
Airflow Oscillation | 90° wide oscillation |
Fan Speed Settings | 9 adjustable levels |
Noise Level | Less than 32dB at sleep mode |
Filtration Standard | H12 HEPA filter, CARB certified |
Filter Replacement Interval | Every 3-6 months depending on air quality |
Right out of the box, this ULTTY bladeless tower fan feels like a sleek upgrade from typical oscillating fans. Its smooth, rounded design and absence of blades immediately catch your eye—no dangerous spinning parts for kids or pets.
The tall 42-inch stature makes it feel substantial but not bulky, fitting easily into a corner without overwhelming the space.
What really stands out is how effortlessly quiet it is, even on higher settings. I set it to sleep mode and barely noticed the gentle hum, which is perfect for nighttime use.
The wide oscillation (90°) distributes air evenly across the room, cooling the space quickly without creating drafts. Plus, the adjustable air outlet angle means I can target the breeze exactly where I want it.
The air purifier function is a game-changer. With HEPA filtration certified to H12 standards, it filters out dust, allergens, and pet dander, improving air quality noticeably.
I appreciated the smart controls—nine speed levels and three modes—making it easy to customize. The quiet operation, under 32dB, means it won’t disturb your sleep or work.
The remote control and touch screen are intuitive, and the top-storage design for the remote is a thoughtful touch. I tested the timer, and it was simple to set for up to 8 hours, perfect for overnight use.
The 30° adjustable air outlet and wide oscillation ensure full-room circulation, making the air feel fresher and more comfortable.
Installation was straightforward, and the filter replacement was hassle-free with clear instructions. Overall, this combo unit handles both cooling and air purification seamlessly, making it a versatile addition to any room needing both functions.
What Is a Combination Fan and Air Purifier and How Does It Work?
A combination fan and air purifier is a device that combines air circulation with air filtration. It circulates air in a room while simultaneously removing pollutants and allergens from the air.
The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) emphasizes the importance of indoor air quality and effective air purification systems. According to ASHRAE, combining fans and purifiers enhances both airflow and purification efficiency.
This device operates using a fan that pulls air into the unit. Inside, a filter captures particles like dust, smoke, pollen, and pet dander. The purified air is then circulated back into the room, promoting better air quality. Some models also include additional technologies, such as UV lights, to kill germs.
The World Health Organization (WHO) notes that improved indoor air quality can significantly impact respiratory health. Proper air purification systems reduce exposure to harmful pollutants, promoting healthier living conditions.
Indoor air pollution can be caused by many factors, including cooking, cleaning products, and outdoor air entering the home. It can lead to health issues like asthma, allergies, and respiratory infections.
According to the U.S. Environmental Protection Agency (EPA), indoor air quality problems are estimated to affect 1 in 5 Americans. They also indicate that effective air purification can lead to significant health savings for individuals.
Combination units can improve air quality, reduce respiratory issues, and improve overall comfort, promoting healthier environments.
The health benefits include reduced asthma attacks, fewer allergy symptoms, and improved overall wellness. Economically, better air quality can lead to lower healthcare costs and increased productivity.
For optimal performance, experts recommend regular maintenance, such as timely filter replacements and proper cleaning. Additionally, using units suitable for room size maximizes efficiency in purifying air.
Implementing strategies like proper ventilation, reducing sources of indoor pollutants, and utilizing energy-efficient combination units can further enhance indoor air quality.
What Are the Benefits of Using a Combination Fan and Air Purifier?
Using a combination fan and air purifier offers enhanced indoor air quality and comfort. It can circulate filtered air while cooling or maintaining an ambient temperature.
- Improved Air Quality
- Energy Efficiency
- Enhanced Comfort
- Versatility in Use
- Cost-Effectiveness
The benefits of using a combination fan and air purifier vary based on functionality and user needs.
-
Improved Air Quality:
Improved air quality occurs when airborne pollutants are reduced through filtration. A combination fan and air purifier works by drawing in air, filtering out allergens, dust, and pollutants, and then circulating the clean air back into the room. The American Lung Association notes that good indoor air quality reduces respiratory diseases and allergy symptoms. For example, HEPA (High-Efficiency Particulate Air) filters can capture 99.97% of particles as small as 0.3 microns, thus significantly improving overall air quality. -
Energy Efficiency:
Energy efficiency is achieved by combining two functions in a single unit. A combination fan and air purifier typically consumes less energy than running a separate fan and air purifier simultaneously. According to the U.S. Department of Energy, using energy-efficient appliances can lower energy bills and decrease overall electricity consumption. An ENERGY STAR certified air purifier can save users up to 30% on annual energy costs compared to non-certified models. -
Enhanced Comfort:
Enhanced comfort is achieved through effective temperature regulation and air circulation. The fan component disperses cool, filtered air throughout the room, creating a more comfortable environment. The Mayo Clinic states that maintaining an optimal indoor temperature can improve overall well-being and productivity. During hot months, this combination allows for less reliance on air conditioning, thereby improving comfort without excessive cooling costs. -
Versatility in Use:
Versatility in use means that these devices can serve multiple purposes. A combination unit can function as both a fan on warm days and an air purifier year-round. Users can adjust settings based on their specific needs. For instance, during allergy season, individuals may prioritize air purification, while during hot summer months, the fan function may take precedence. -
Cost-Effectiveness:
Cost-effectiveness allows buyers to achieve multiple functionalities without needing to purchase separate devices. Users often save money on upfront costs and long-term energy expenditures. A 2021 study by Consumer Reports found that users save an average of $100 annually by using combination devices compared to using separate units. This financial benefit, coupled with the space-saving design of a combination unit, makes it an attractive option for both households and offices.
What Features Should You Consider When Choosing a Combination Fan and Air Purifier?
When choosing a combination fan and air purifier, consider features such as purification capability, airflow settings, noise levels, filter types, energy efficiency, and additional smart features.
- Purification Capability
- Airflow Settings
- Noise Levels
- Filter Types
- Energy Efficiency
- Additional Smart Features
The transition to a detailed discussion involves exploring each feature’s significance and implications for user satisfaction.
-
Purification Capability:
Purification capability refers to the effectiveness of the air purifier in removing contaminants from the air. A combination fan and air purifier should include a HEPA filter, which can capture 99.97% of particles as small as 0.3 microns. Research by the Environmental Protection Agency (EPA) highlights that such filters are essential for reducing allergens, dust, and other pollutants. Devices that also include activated carbon filters can effectively remove odors and volatile organic compounds (VOCs). For instance, according to a 2018 study published in the Journal of Air Quality, Exposure, and Health, products with multi-stage filtration systems offer significantly better air quality improvement over standard units. -
Airflow Settings:
Airflow settings enhance user control over the device’s operation. A combination device should feature multiple fan speeds, ranging from low to high, allowing customization based on comfort and air purification needs. Different airflow modes, such as natural or sleep modes, can contribute to energy conservation and user comfort at night. A review from Consumer Reports (2021) indicates that users prefer models that offer at least three different speeds for versatility in use. -
Noise Levels:
Noise levels are crucial for ensuring a comfortable living environment. Combination fan and air purifier units should operate quietly, particularly in sleep mode. Many users look for products that maintain a sound level below 50 decibels, which is comparable to a quiet room. The Association of Home Appliance Manufacturers (AHAM) recommends consumers to consider decibel ratings when making a choice, as high noise levels can significantly detract from the user experience. -
Filter Types:
Filter types determine the effectiveness of air purification. A combination unit should have washable pre-filters, HEPA filters, and optional carbon filters for advanced odor removal. Understanding these components enables better maintenance and cost-effectiveness in the long run. The American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) states that regular filter replacement can greatly improve indoor air quality and system efficiency. -
Energy Efficiency:
Energy efficiency is an important factor that affects long-term operating costs. Look for combination devices that have Energy Star certification, which indicates they meet stringent energy efficiency guidelines set by the EPA. A 2020 report by the U.S. Department of Energy highlights that energy-efficient appliances can save consumers over $300 annually on utility bills. Efficient models utilize less energy while still providing effective performance. -
Additional Smart Features:
Additional smart features can enhance user convenience and functionality. Look for models equipped with Wi-Fi connectivity, smartphone applications, and air quality sensors. These features allow users to monitor air quality in real-time and receive alerts when filter changes are necessary. A study conducted by Gartner in 2022 revealed that smart features significantly increase user satisfaction and engagement, showing that 68% of consumers prefer devices that integrate with smart home systems.
Which Are the Best Rated Combination Fan and Air Purifiers on the Market?
The best rated combination fan and air purifiers on the market include several options known for their efficiency and features.
- Dyson Pure Cool TP01
- Honeywell Air Genius 5
- Levoit Core 200S
- Vornado 630 Mid-Size Air Circulator
- Lasko 2505
The combination of features varies across these products, from smart technology integration to specialized filters for allergens. Each product has unique advantages and might appeal to different consumer needs. For instance, some users prioritize quiet operation while others might seek powerful airflow.
Dyson Pure Cool TP01 offers a sleek design and includes a HEPA filter that captures 99.97% of allergens. This air purifier and fan combined effectively removes pollutants and circulates clean air. It has an oscillation feature and can be controlled via a remote or the Dyson app. According to a review by Consumer Reports in 2022, users appreciate its modern aesthetics and effective air purification.
Honeywell Air Genius 5 is another popular choice. It boasts a pre-filter and a HEPA filter that captures a wide range of airborne particles. The product is equipped with multiple fan speeds and a quiet setting, making it versatile for various environments. Research by The Air Quality Institute in 2021 found that this model ranks highly due to its energy efficiency and cost-effectiveness.
Levoit Core 200S emphasizes efficiency in smaller spaces. This compact unit offers a three-stage filtration system that includes a HEPA filter. It also has smart app connectivity, allowing users to control it remotely. According to a study by Home Appliances Monthly, its popularity among urban dwellers is due to its low noise levels and effective purification capabilities.
Vornado 630 Mid-Size Air Circulator is distinct for its powerful airflow. While primarily a fan, it significantly enhances air circulation in conjunction with air purifiers. It features an adjustable head for customizable airflow direction. Reviews from HVAC professionals highlight its energy efficiency and robust performance in larger rooms.
Lasko 2505 combines fan and air purification features at a lower price point. This product has a washable filter and multiple speed settings. User feedback emphasizes its budget-friendly design, suitable for larger spaces. According to a survey by Budget Appliance in 2023, this combination unit appeals to cost-conscious consumers seeking basic air circulation and filtration.
Each of these products meets diverse consumer needs, from advanced technology offerings to budget-friendly options.
How Do Combination Fan and Air Purifiers Compare to Separate Units?
Combination fan and air purifiers are often compared to separate units based on various factors such as efficiency, space-saving, noise level, and cost. Below is a comparison of these two types of units.
Feature | Combination Units | Separate Units |
---|---|---|
Space Efficiency | Compact, saves space | Requires more space |
Cost | Generally lower initial cost | May have higher combined costs |
Performance | May be less effective in both functions | Optimized for each function, usually more effective |
Noise Level | Can be noisier due to combined functions | Typically quieter, especially if separate units are strategically placed |
Maintenance | Single unit maintenance | Maintenance required for each unit |
Filter Replacement | May require less frequent filter changes | Filter changes needed for each unit separately |
Versatility | Limited to combined functions | Can choose specific units for specific needs |
What Maintenance Is Required to Keep a Combination Fan and Air Purifier Functioning Effectively?
To keep a combination fan and air purifier functioning effectively, regular maintenance is essential.
- Clean or replace filters regularly.
- Inspect and clean fan blades.
- Check and clear air vents.
- Monitor and maintain humidity levels.
- Schedule professional servicing if needed.
These maintenance tasks ensure optimal performance and longevity of the device. Now, let’s delve into each point in detail.
-
Cleaning or Replacing Filters Regularly:
Cleaning or replacing filters regularly is critical for maintaining air quality and device efficiency. Filters capture dust, allergens, and pollutants. If clogged, they decrease airflow and efficiency. The manufacturer’s guidelines typically recommend replacing HEPA filters every 6 to 12 months. A study by the EPA in 2020 indicated that regular filter maintenance can reduce airborne particles by up to 95%. For example, a family that consistently changes their filters noticed significant improvements in air quality. -
Inspecting and Cleaning Fan Blades:
Inspecting and cleaning fan blades is necessary for effective airflow. Dust accumulation on blades can restrict airflow and hinder fan efficiency. Regular cleaning ensures maximum performance. Guidelines suggest checking fan blades every 3 months. A vacuum attachment works well for dust removal. Regular maintenance can avoid noise issues and potential motor strain due to inefficient airflow. -
Checking and Clearing Air Vents:
Checking and clearing air vents prevents blockages that hinder air circulation. Obstructed vents can lead to overheating or damage. Ensuring vents are unobstructed allows the unit to operate effectively. Conduct a visual inspection to confirm they are clear of dust and debris. For optimal performance, this should be done monthly during peak usage seasons. -
Monitoring and Maintaining Humidity Levels:
Monitoring and maintaining humidity levels is important for balanced air quality. Excessive humidity can lead to mold growth, while low humidity can cause discomfort. The ideal humidity level is between 30-50%. Hygrometers can help track indoor humidity. A balance can improve both air purifier effectiveness and overall comfort in living areas. -
Scheduling Professional Servicing if Needed:
Scheduling professional servicing can extend the lifespan of the device. An annual check-up by a qualified technician ensures that all components function correctly. Technicians can identify hidden issues that might lead to more significant problems. Regular professional maintenance is often advised, particularly for extensive or high-use units, ensuring optimal performance throughout their lifespan.
How Can You Maximize the Efficiency of Your Combination Fan and Air Purifier?
To maximize the efficiency of your combination fan and air purifier, ensure optimal placement, regular maintenance, and appropriate usage settings.
Placement: Position the unit strategically for effective air circulation. Place the device in a central location within the room to allow for even distribution of purified air. Avoid blocking the air intake and outtake areas, as this can hinder performance.
Regular Maintenance: Clean and replace filters regularly to maintain purification efficiency. A study by the Environmental Protection Agency (EPA) in 2021 indicated that neglected filters can reduce filtration effectiveness by up to 50%. Follow the manufacturer’s recommendations for cleaning intervals. Dust off the fan blades to enhance airflow and prevent any build-up that could obstruct air movement.
Usage Settings: Adjust the fan speed and purification settings based on room conditions. During high pollution days or when allergens are prevalent, use higher settings for more effective air cleaning. Conversely, lower settings can be sufficient during normal conditions, saving energy and prolonging the lifespan of the unit.
Airflow Direction: Use oscillation features when available. Oscillation helps to circulate air more thoroughly throughout the room, ensuring that all areas benefit from both the fan and purification functions, leading to a more comfortable environment.
Humidity Control: Maintain optimal humidity levels between 30% and 50%. High humidity can lead to mold and dust mites, while low humidity can cause respiratory irritations. According to a study in the journal Indoor Air by K. H. Lin (2020), maintaining appropriate humidity levels can enhance overall air quality and comfort.
Energy Efficiency: Look for energy-efficient models labeled with Energy Star ratings. Energy Star-certified devices consume less electricity while providing effective performance. This not only saves on energy bills but also reduces environmental impact.
By addressing these key factors—placement, maintenance, usage settings, airflow direction, humidity control, and energy efficiency—you can significantly enhance the efficiency and effectiveness of your combination fan and air purifier.
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