Are you trying to find fan with charcoal filters among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling fan with charcoal filters on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 18 hours of research and did 30 fan with charcoal filters tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best fan with charcoal filters you can buy today
- Self-help Air Cleaner: Simply stick our activated carbon filter onto your ceiling fan blades then turn your ceiling fan into a powerful air purifier, improving the air quality in the bedroom and providing a more comfortable living environment.
- No Tools and No trouble: These ceiling fan filters are made of durable charcoal ingredients, providing long-lasting performance and an affordable solution to make your space look the best.
- Carbon Air Purifiers: Specially designed for filtering common household pollutants, When your fan blades rotate, the air is pushed through our ceiling fan air filter, effectively capturing kitchen odors and dust particles in the bedroom, keeping your living environment always fresh
- Efficient and Multi Compatible: The air filter is compatible with most ceiling fan blades and can be easily trimmed to the perfect size. Just connect it to the fan and achieve energy-saving and all-weather purification in the bedroom, living room, and any place where you want your family to breathe more easily.
- Easy to Install: Our adhesive is a simple and strong adhesive that can easily peel and stick to the fan blades. When a new filter needs to be replaced (1-3 months after installation), simply peel it off and replace it with a new filter to keep fresh air flowing at home!
- Turn Your ceiling Fan Into a Powerfull air purifier- Looking for ceiling fan blade filters that will make a noticeable difference in your indoor air quality? barnakl Activated Coconut Carbon filters attach to your fan for energy-efficient, round-the-clock purification in the bedroom, living room, and anywhere you want your family to breathe easier.
- Unscented, Odorless coconut Shell Carbon- Coconut Carbon is a renewable resource made from coconut shells. Its lightweight, microporous structure traps a wide range of particles and contaminants, silently and invisibly cleaning the air as you run your fan—no need to settle for clunky, noisy air purifiers!
- Engineered to Filter common Household Contaminants- Each US-made barnakl fan blade carbon filter has more than 1200 square meters per gram of surface area. As the blades of your fan spin, air is pushed through our ceiling fan air filters to effectively capture dust, pollen, pet dander, smoke, gasses, chemicals, and VOCs, promoting a healthier living environment.
- Easy Installation & universal fit- barnakl ceiling fan filters are self-adhesive and stick easily on top of fan blades. When it’s time to swap them for new filters (1-3 months after installation) simply peel them off and replace them with new barnakl filters to keep the fresh air flowing in your home!
- Tips for best Results- To ensure your ceiling fan air filters adhere securely, carefully clean dust and debris from your fan blades before application. Skeptical about the effectiveness of barnakl filters? Simply weigh your filter before use, and then weigh it again when you replace it. You’ll notice a weight increase of 15-30%, which represents the contaminants trapped in the filter!
- Purify Indoor Air: CarbonPur ceiling fan filters effectively remove odors, smoke, VOCs, dust and more from your home.
- Easy to Install: Our activated charcoal filters are designed to easily attach to the top of your ceiling fan blades with adhesive anchors. No tools are required, and installation takes just minutes.
- Universal Fit: Adhesive anchors work on any ceiling fan blades. 5 pack set allows installation of a filter on every fan blade, eliminating vibration and maximizing air purification performance.
- Long-Lasting: CarbonPur filters are made from high-quality filter material that is fully impregnated with activated carbon for consistent long term adsorption of indoor air pollutants.
- High Efficiency: Our unique anchoring scheme maintains an aerodynamic filter shape that doesn't impact ceiling fan air flow, improving air quality without running a dedicated air filtration machine.
- Made in USA: CarbonPur is a US veteran owned small business, proudly Made in USA from US materials.
- Protected by Amazon Transparency: Every set is traceable with Transparency so you know you are getting genuine CarbonPur filters.
- Excellent Odor Control: The air carbon filter is made of premium RC 412 Australian virgin charcoal with an IAV of 1200+, which has a higher absorption rate and practicality, effectively eliminating odors and chemicals in grow tents and hydroponic rooms, indoor grow tents, bathrooms, basements and kitchens.
- Built-in Powerful Fan: Our air carbon filter smelliness control has built-in ventilation fan, strong power, low noise, it can generate 210 CFM airflow, effectively ventilate the grow tent, transfer heat or cool the room, circulate fresh air, improve airflow and reduce humidity. Equipped with deflector, it can focus the fan airflow and reduce turbulent kinetic energy.
- Durable Flange and Base: The carbon filter 4'' flange and bottom are strong and durable, it can effectively filter odors and extend service life. The heavy-duty flange can be seamlessly installed on the pipe, with stable structure and high precision to prevent carbon leakage.
- Unique Design: Double-sided galvanized steel mesh adopts hexagonal design, which greatly increases the open area, ensuring maximum airflow, thus achieving higher filtration rate. Removable pre-filter cloth blocks 99% of particles, keeping the filter clean. Odor removal air filter is designed to eliminate odors and chemicals using activated carbon.
- Widely Applicable: This carbon filter for grow tent can be used as an intake or exhaust filter in various settings, it is ideal for inline duct fans, grow tent fans, closets, storage rooms, kitchens, bathrooms, basements. Size: 4'' flange duct x 14'' length, Package Included: 4'' air carbon filter x1, ventilation fan x1, pre-filter x1.
- Package includes: you will receive 20 pieces of black activated carbon ceiling fan air filters, enough quantity for your daily use and you can share them with you families or friends
- Quality material: these fan blade air purifier pads are made from activated charcoal, which are experts at absorbing dust and unwanted particles from your indoor air
- Size information: each ceiling fan blade filter measures approx. 10 x 3.54 x 0.2 inches, ideal size for a wide range of ceiling fans
- Wide applications: the ceiling fan blade filters pads can be used such as home, office, shopping malls, and anywhere a fan is applied, which will keeps your place cleaner and ensures that air circulation remains optimal
- Easy to use: just remove the filters and peel off the adhesive side of the tape, then place the filters on the blade and fit it to the inside position
- HIGH QUALITY MATERIALS: Activated carbon filters are make of natural coconut shells, which are converted into activated carbon through a sustainable process. This microporous material is odorless and effectively traps particles and contaminants, providing you with cleaner, fresher air, perfect for home, office, bedroom, living room, study room or other enclosed environment, providing you a more comfortable living atmosphere.
- WORKING PRINCIPLE: This filter uses the air flow pressure difference formed above and below the blades when the ceiling fan is work to adsorb harmful particles in the air. For example, dust, pollen, pet dander, smoke, etc. These Ceiling fan air filters Employing high-fiber, high-density, multi-layered thick air-filtering cotton that heightens its capability to sift pollutants out and consistent long term adsorption of indoor air pollutants.
- Strong, not easy to fall off: Our adhesive is a simple peel-and-stick strong adhesive, fast, easy and strong installation. TIP: Make sure the ceiling fan is clean, dry and free of dust and grease before attaching.
- LARGE SIZE: the ceiling fan filters measures about 10 x 4 x 0.25 inches, standard size fits most of the ceiling fans, you can trim it to any shape according to your actual needs, widely use them on 3,4,5 blade ceiling fans, convenient to use, lightweight, and with a micro-porous structure, they can silently purify the air, absorbing particles and pollutants in the air.
- EASY INSTALLATION: Replacing your ceiling fan filters is quick and hassle-free, just simply remove the tape backing and attach to opposite blades of your ceiling fan. The adhesive backing makes installation a breeze, and the filters are designed to fit discreetly on top of the blades, so they stay out of sight.
- 【Natural Air Purification】Advanced activated carbon technology effectively removes volatile organic compounds and fine particles from the air, creating a fresher, healthier home environment.
- 【Easy Installation】No tools required, simply attach to fan blades using included adhesive strips. 10 x 3.54 x 0.2inch fit most standard ceiling fan blades and can be easily replaced when needed.
- 【Broad Applicability】Whether in the bedroom, living room, or any other living space, simply install and enjoy clean air, especially suitable for homes with pets or people with sensitivities.which will keeps your place cleaner and ensures that air circulation remains optimal
- Protect Your Fan: Keep your ceiling fan blades clean and dust-free, reducing the need for frequent cleaning and extending the life of your fan.
- 【Eco-Friendly Design】Recyclable filter material and biodegradable packaging reduce environmental impact.
- 【Natural and Efficient Material】: Activated carbon filter made of natural coconut shell, with large porosity and high specific surface area (more than 1200 square meters per gram of specific surface area), light weight, precise adsorption of dust, pollen, pet hair and other types of fine particles in the air, efficiently purify the air.
- 【Easy Air Purification】: When the fan rotates, the air enters into the filter, which can quickly and continuously intercept particles, reduce indoor dust and improve air quality.
- 【Lightweight and Invisible Design】: The filter is 9.8IN x 3.5IN(25CM x 9CM) with a thickness of 5MM , upgraded invisible design with its lightweight coconut activated carbon filter, which guarantees efficient air purification without affecting the speed of the ceiling fan.
- 【Tool-Free Easy Installation】: You need to clean the dust and stains on the fan blades before use, just tear off the sticker and press it evenly on the top of the ceiling fan blades, suitable for most standard ceiling fans, easy to install and replace without difficulty. Hidden and inconspicuous, does not affect the overall aesthetic.
- 【Cost Effective Choice】: Compared to expensive traditional air purifiers, our filters provide a cost-effective air purification solution. Each filter lasts for 2 - 3 months, providing long-lasting air purification without complicated maintenance. Providing you with 24h a day adsorption of indoor dust particles for bedrooms, living rooms and wherever you want your family to breathe smoother!
- Upgrade your indoor environment with our universal ceiling fan filters. This 20-count pack includes unscented, adhesive activated carbon filters that attach directly to your fan blades. As your fan spins, these filters work continuously to reduce dust, pollen, pet hair, smoke, and common particles—offering an energy-efficient and quiet way to help freshen the air.
- Made from high-quality activated carbon, these carbon air filters are lightweight yet effective. Their fragrance-free design ensures no added scent, making them ideal for households seeking odor control and improved air freshness. A reliable choice for homes with pets or open living spaces.
- Each filter is engineered with a microporous structure, providing over gram of surface area. This setup supports maximum contact with air movement, helping to reduce airborne materials as your fan operates. Ideal for bedrooms, living areas, or offices, they offer discreet, low-maintenance air support.
- Installation is simple: clean your fan blades, peel the backing, and stick the filter in place. These self-adhesive fan filters are designed for a universal fit and stay securely in place during use. No tools required, and regular replacements every 1–3 months keep performance consistent.
- Want visible proof of their effectiveness? Weigh a filter before installation and again after a few months. A noticeable weight gain means airborne materials have been successfully captured—clear, physical evidence your ceiling fan air filters are working.
- Excellent Odor Control: Made of premium RC 412 Australian Virgin charcoal at 1200+ IAV, helps to eliminate pungent smells and chemicals; The 38mm thick charcoal bed with high microporosity ensures its high absorption
- Unique Design: The dual-sided galvanized steel mesh adopt round hole design, which greatly increases the open area and ensures the max. airflow 223 CFM; The lengthened carbon canister enables a higher filtration rate
- Versatile Applications: The detachable pre-filter cloth blocks 99% particles to keep the filter clean; Effective to eliminate odors and gaseous compounds for indoor grow tent, hydroponics room, kitchen or basement
- Reversible Flange and Base: The heavy-duty iron flange and base can be exchanged to reverse the charcoal canister for an exhaustive smell filtration and help to prolong the filter’s service life
- Compatible Function: It can work with a 4-inch inline duct fan to configure both intake and exhaust ventilation system; Comes with a pair of belts which makes the assembly in grow tent more convenient
- TURN YOUR CEILING FAN INTO A POWERFUL AIR PURIFIER - Looking for ceiling fan blade filters that will make a noticeable difference in your indoor air quality? Barnakl Activated Coconut Carbon filters attach to your fan for energy-efficient, round-the-clock purification in the bedroom, living room, and anywhere you want your family to breathe easier.
- UNSCENTED, ODORLESS COCONUT SHELL CARBON - Coconut Carbon is a renewable resource made from coconut shells. Its lightweight, microporous structure traps a wide range of particles and contaminants, silently and invisibly cleaning the air as you run your fan—no need to settle for clunky, noisy air purifiers!
- ENGINEERED TO FILTER COMMON HOUSEHOLD CONTAMINANTS - Each US-made Barnakl fan blade carbon filter has more than 1200 square meters per gram of surface area. As the blades of your fan spin, air is pushed through our ceiling fan air filters to effectively capture dust, pollen, pet dander, smoke, gasses, chemicals, and VOCs, promoting a healthier living environment.
- EASY INSTALLATION & UNIVERSAL FIT - Barnakl ceiling fan filters are self-adhesive and stick easily on top of fan blades. When it’s time to swap them for new filters (1-3 months after installation) simply peel them off and replace them with new Barnakl filters to keep the fresh air flowing in your home!
- TIPS FOR BEST RESULTS - To ensure your ceiling fan air filters adhere securely, carefully clean dust and debris from your fan blades before application. Skeptical about the effectiveness of Barnakl filters? Simply weigh your filter before use, and then weigh it again when you replace it. You’ll notice a weight increase of 15-30%, which represents the contaminants trapped in the filter!
- Ventilation Fan: Powerful blower with a fan speed of 2500 RPM for an air flow of 195 CFM. Moves air through your target location efficiently for optimal ventilation. Efficient flow deflector feature increases air flow while cutting noise output.
- Air carbon filter: Air flow: 220CFM; Size: 4 inch; flange ducting: 12 inch length; 1200 + IAV Australian RC412 activated carbon. Hook design, easy to hang. Pre-filter included
- Ducting: Material: aluminum foil + PET; size: 4 inches (diameter) x 8 feet (length) when fully extended. Temperature endurances range from 0 ~ 185°F. (-18℃ ~ 85℃). 1 pair of 4-inch metal clamps made from stainless steel.
- Wide Applications: The combo suitable for grow tent, greenhouse, basement workshops, bathroom or kitchen, removes heat and eliminate the undesirable ill-smelling odors to keep environment humidity and temperature balanced.
- Package Includes: 1 x 4inch 195 CFM inline duct ventilation fan; 1 x 4inch black air carbon filter with pre-filter; 1 x 4inch 8 feet aluminum ducting with 2 clamps.
- An air filtration kit with everything you need to cool, ventilate, and control odors in your grow space.
- Features the CLOUDLINE inline fan with speed controller, delivering silent and efficient performance.
- Carbon filter with prefilter cloth uses 1200+ IAV activated charcoal for high efficacy odor blocking.
- Four-layer flexible ducting connects the inline fan and filter to your grow tent to direct airflow.
- Kit Duct Size: 6” | Fan Airflow: 352 CFM | Noise 34 dBA | Carbon Thickness: 38 mm | Ducting Length: 25 ft.
- ✅ Efficient Dust & Allergen Capture: Our specially designed filters trap dust, pet dander, pollen, and other airborne particles, preventing them from circulating in your home.
- ✅ Easy to Install & Replace: Simply attach the filters to your fan blades – no tools required! They fit most standard ceiling fan blades and can be easily replaced when needed.
- ✅ Improve Air Quality: By capturing airborne particles, these filters help reduce allergens and improve the overall air quality in your home.
- ✅ Protect Your Fan: Keep your ceiling fan blades clean and dust-free, reducing the need for frequent cleaning and extending the life of your fan.
- ✅ Cost-Effective & Reusable: Washable and reusable, these filters save you money compared to disposable alternatives.
- Excellent Odor Control: The air carbon filter is designed to eliminate odors and chemicals using activated carbon, it is not only suitable for odor control and purifying the air in your grow tent/room, it can also absorb odors from pets, smoke, cooking fumes, providing you with cleaner and healthier air.
- Durable Flange and Base: The carbon filter 6'' flange and bottom are not removable, strong and durable, it can effectively filter odors and extend service life. The heavy-duty flange can be seamlessly installed on the pipe, with stable structure and high precision to prevent carbon leakage.
- Premium Activated Carbon: The carbon filter for grow tent uses premium Australian virgin charcoal bed, rated at 1050+ IAV, providing 100% filtered airflow, it is suitable for grow operations, bathrooms, kitchens and restrooms with odors. The 50mm thick charcoal bed has a high microporosity, it can achieve better adsorption and air filtration.
- Compatible Features: Air carbon filter smelliness control can be used with 6'' inline duct fans, configured with intake and exhaust ventilation systems. Double-sided galvanized steel mesh adopts hexagonal design, which greatly increases the open area, ensuring maximum airflow of 410 CFM, thus achieving higher filtration rate.
- Widely Applicable: This carbon filter odor control can be used as an intake or exhaust filter in various settings, providing two-way filtration, it is suitable for inline duct fans, grow tent fans, closets, storage rooms, kitchens, bathrooms, basements. Size: 6'' flange duct x 8.2'' length. Package Included: 6'' carbon filter × 1, pre-filter × 1.
- Growtent Garden Air Carbon Filter Smellines Control with Australia Virgin Charcoal for Inline Duct Fan, Grow Tent, Pre-filter Included
- 4” inline filter designed to block odors and chemicals from escaping grow tents and hydroponics rooms.
- Features premium-grade Australian charcoal with greater adsorption and longer life rating.
- Powder-coated gunmetal finish is constructed for high durability and rust resistance to high-level humidity.
- Built with aluminum flanges and a galvanized steel mesh; includes two straps, two rope clips, and two pre-filters.
- Duct Opening: 4” | Length: 12" | Airflow Rating: 210 CFM | Carbon: Australian RC412 at 1200+ IAV | Thickness: 38mm
- Perfect Combination: This ventilation kit includes a 6-inch 390 CFM inline duct fan and a 6"x 16" carbon filter; This combo is primarily used in air circulatio and ventilation projects
- Powerful Air Flow Fan: The powerful inline fan with a speed of 2450 RPM can effectively circulate air for optimal room ventilation; Meanwhile, less than 34 dB noise level will not disturb your work
- Excellent Odor Control: The porous activated carbon with 1050+ RC 48 Australia Virgin Charcoal helps eliminate some of the most undesirable, pungent smells and particulates for indoor grow tents
- Premium Material: Made of high-quality material, which makes the ventilation kit serve for a long time; The inline fan features a strong and powerful motor, and the ducting is also flexible
- Widely Applicable: Suitable for both commercial and residential air ventilation solutions; Widely used in grow rooms, planting room, grow tents, HVAC applications, bathroom venting, etc.
- Reusable carbon filter features a patented design that eliminates the need to replace entire filters.
- Includes 1+ refill to match the filtration capacity of two standard 4” carbon filters while costing less.
- Removable twist-off flanges support easy, tool-free refilling using the included funnel and scoop.
- Larger chamber is lab-tested to block odors as effectively as standard filters with no compression required.
- Dual-layered steel mesh with protective coating withstands high humidity in grow tents through many grow cycles.
- Excellent Odor Control: The air carbon filter is designed to eliminate odors and chemicals using activated carbon, it is not only suitable for odor control and purifying the air in your grow tent/room, it can also absorb odors from pets, smoke, cooking fumes, providing you with cleaner and healthier air.
- Durable Flange and Base: The carbon filter 4'' flange and bottom are strong and durable, it can effectively filter odors and extend service life. The heavy-duty flange can be seamlessly installed on the pipe, with stable structure and high precision to prevent carbon leakage.
- Premium Activated Carbon: The carbon filter for grow tent uses premium Australian virgin charcoal bed, rated at 1050+ IAV, providing 100% filtered airflow, it is suitable for grow operations, bathrooms, kitchens and restrooms with odors. The 38mm thick charcoal bed has a high microporosity, it can achieve better adsorption and air filtration.
- Compatible Features: Air carbon filter smelliness control can be used with 4'' inline duct fans, configured with intake and exhaust ventilation systems. Double-sided galvanized steel mesh adopts hexagonal design, which greatly increases the open area, ensuring maximum airflow of 210 CFM, thus achieving higher filtration rate.
- Widely Applicable: This carbon filter odor control can be used as an intake or exhaust filter in various settings, providing two-way filtration, it is suitable for inline duct fans, grow tent fans, closets, storage rooms, kitchens, bathrooms, basements. Size: 4'' flange duct x 12'' length. Package Included: 4'' carbon filter × 1, pre-filter × 1.
How to choose a good fan with charcoal filters
Does the idea of finding a fantastic fan with charcoal filters make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in fan with charcoal filters. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top fan with charcoal filters products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top fan with charcoal filters on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top fan with charcoal filters brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top fan with charcoal filters based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the fan with charcoal filters were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good fan with charcoal filters, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your fan with charcoal filters.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting fan with charcoal filters for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our fan with charcoal filters. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what fan with charcoal filters should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on fan with charcoal filters.
