Lower airflow through your air purifier will reduce its filtration efficiency. Philips AC3256/30 | Pages: 84 | File type: PDF | Filename: Www.philips.com/welcome Bedienungsanleitung, Philips AC6608-70 Series 6000 Air Purifier, Philips 55OLED803/12 Razor Slim 4k Uhd Oled Android Tv, Philips SRC2063/27 Universal remote control, Philips GC362-80 Steam&Go Handheld Garment Steamer, Philips 32HFL5860D/27 Professional LCD TV, User Manual - (English, Chinese, Malay, Thai), Localized commercial leaflet - English (US) - (English). But you may not even need to replace your air purifiers pre-filter.
You can easily clean this by wiping a cotton swab over the sensor. VOCs are so tiny that they are able to slip right through an air purifier HEPA filter. Filter cleaning is foremost a major aspect when it comes to ensuring efficient operation of the air purifier. Air purifier pre-filters even capture particles such as pet hair and pollen.
Never use abrasive, aggressive, or flammable cleaning agents such as bleach or alcohol to clean any part of the appliance. To check if your pre-filter is washable, the best thing to do is to consult the manufacturers manual. That's why you should keep windows and doors closed as much as possible. In this case, your only job is to clean or replace the pre-filter regularly. In this article, Ill explain what a pre-filter is and discuss its benefits. A good rule of thumb is to check your air purifiers filters once every week. Air purifier pre-filters capture dust and other large particles. Press the two clips down and pull the pre-filter towards you. If the pre-filter is dirty, then its time to clean or replace it. Eye, nose, and throat irritation are some of the common effects.
All Rights Reserved, Special Raksha Bandhan Sale is now live. Since the HEPA filter has such a fine mesh, it tends to get clogged quickly.
Ill also explain how to maintain your air purifiers pre-filter so its always performing at its best. Clean them more frequently if you use the purifier in a dusty environment. If you often go in and outside of the house, you take new air particles with you from outside. The more porous the carbon filter, the better. - eBay Money Back Guarantee - opens in a new window or tab, - for PayPal Credit, opens in a new window or tab, Learn more about earning points with eBay Mastercard, - eBay Return policy - opens in a new tab or window, - eBay Money Back Guarantee - opens in a new tab or window. Handy, because this way you'll know exactly what kinds of pollen are in the air.
This carbon pre-filter can be cut to fit your air purifier. Many air purifier pre-filters can be cleaned and reused over and over again. Many odor particles are too small to be captured by an air purifiers HEPA filter. Air purifier pre-filters are made of less-efficient filter material. This carbon pre-filter material can be cut to size for your air purifier. It needs enough room to suck in the air. If your air purifier uses a replaceable pre-filter, then the cost of the pre-filter will be much lower than the HEPA filter. Using a pre-filter will block out large debris from getting stuck in the HEPA filter. Seller assumes all responsibility for this listing. If you dont clean it regularly, it can clog the pores and affect the overall performance of the air flow. So they tend to be much cheaper to replace than HEPA filters. User manualAir Purifier forPhilips AC3256/30. The air filtration process starts from the Pre-Filter. If you dont have a reusable pre-filter, thats okay too. In addition to eliminating odors, this material also traps large particles, extending the lifespan of your HEPA filter. If your house is dusty or you have pets, you will need to change your pre-filter more often. Wash the pre-filter under a running tap. Sunday: 9:00 AM - 6:00 PM EST, Use manuals file type: PDF.
You can get pre-filter material at reasonable prices, so replacing one wont hurt your wallet. Then, gently push the panel against the body of the appliance (2). Cleaning an air purifier pre-filter is like cleaning other types of reusable filters. You can clean the dust with a dry cloth, or choose to vacuum or rinse it with water. Pull the bottom part of the front panel to remove it from the appliance. This is because there is more surface area for the VOCs to adhere to in a porous carbon filter. So what are volatile organic compounds anyway? Worlds Largest R&D Centre in Air Care. Does it really matter to clean the filters? Using a pre-filter in your air purifier is essential to maintain the health of your air purifiers main HEPA filter. The main issue with VOCs is that they can cause health issues. To reattach the front panel, mount the panel onto the top of the appliance first (1). The display will show a filter code when they need to be replaced. Coway uses the Cartridge technique for efficient filtration which enables you to directly pull the Pre-Filter from the air purifier without the need of dissembling the body. Clean the air quality sensor, the dust inlet and the dust outlet with a lightly moistened cotton swab. We only use your feedback to improve the website, we won't respond. Many air purifiers use washable pre-filters that are reusable.
But those particles will build-up on the pre-filter over time. Replacing HEPA filters are the primary ongoing cost of using an air purifier. Philips - Air Purifiers. Clean the air quality sensor inlet and outlet with a soft brush. .wp-show-posts-columns#wpsp-3278 {margin-left: -2em; }.wp-show-posts-columns#wpsp-3278 .wp-show-posts-inner {margin: 0 0 2em 2em; }, .wp-show-posts-columns#wpsp-3283 {margin-left: -2em; }.wp-show-posts-columns#wpsp-3283 .wp-show-posts-inner {margin: 0 0 2em 2em; }. It captures the larger dust particles, hair, pet fur and dander through the micro mesh. It goes without saying that every breath you take has an effect on your health and overall wellbeing. Get Exclusive Price on Amazon The display will show F0 when it's time to clean the pre-filter.
Never immerse the appliance in water or any other liquid. The pre-filter is not as effective as the main filter at removing particles from the air. By doing so, youll extend the life of the HEPA filter, saving you money in the long run.
Only the pre-filter is washable. Eye, nose, and throat irritation are some of the common effects. Convenient, because now you won't forget. A typical reusable filter just needs to be sprayed down with water to remove particles. Put the unpacked air purification filters back into the appliance. This will give your HEPA filter more room to capture the microfine particles that its designed to capture.
However, volatile organic compounds (VOCs) are often much smaller than 0.3 microns. Something went wrong. HVAC Training Shop is reader-supported. You can find it in the App Store or the Play Store. That is because the air purifier locks itself if you don't replace the filters. I earn from qualifying purchases. If youve walked an extra mile to get an air purifier in your house to ensure pure air, it is important at the same time to maintain it in the long run. This prevents exposure to the virus and allergens trapped by Carbon and HEPA filter. In fact, most air purifiers come with pre-filters, so chances are that your air purifier already has one. 1-888-744-5477 Air purifier pre-filters capture dust and other large particles. Coway AirMega 150 comes with 3 powerful filters namely Pre-Filter, Carbon Filter and the Anti-Flu Green True HEPA Filter. If you notice that your air purifier is unable to eliminate odors from your home, its time to try out a carbon pre-filter. To reattach the front panel, mount the panel onto the top of the appliance first (1). You can simply hang the wet pre filter on the front cover and switch on the air purifier. If the pre-filter is very dirty, use a soft brush to brush away the dust.
As an Amazon Associate, I earn from qualifying purchases.
An air purifier pre-filter removes particles from your rooms air before the main HEPA filter. The air purification filter is not washable nor vacuum cleanable. Carbon pre-filters specialize in eliminating odor particles so your room doesnt have any bad smells. As the first line of defense, they filter out many particles before the particles get to the HEPA filter. they are trapped by the filter through a process called adsorption. Receive the best promotions and personal advice. Related Posts For the air purifier to function optimally, it's important that you give it a good place in the room. The Cartridge design with Batch separation helps to clean and replace filters without the need to carry the entire purification unit. Cleaning products, air fresheners, and pesticides are some household items that emit VOCs. But HEPA filters tend to get clogged up by larger particles such as dust and pollen. In the manual, you'll find which filter fits in your air purifier. Copyright 2022 ManualsFile.com. The Coway Air Mega 150 is designed in a way where it pulls the contaminated air from the front and purifiers through filters, pushing the air through the top. Well explain more below. Put the pre-filter back into the appliance. In this case, you won't notice much of a difference if you use of an air purifier.
That doesnt matter, since removing tiny particles from the air is not the purpose of the pre-filter. Before using the appliance, remove all packaging materials of the filters and place the filter into the appliance as described below. Make sure that you completely dry out the Pre-Filter before placing it in the air purifier. This is a huge benefit because pet hair and pollen can quickly clog up a HEPA filter. Some pre-filters are disposable and should not be cleaned and reused.
Clean the air quality sensor every 2 months for optimal functioning of the purifier. Exposure to VOCs can also cause headaches and nausea.
Using a pre-filter helps keep maintenance costs down by prolonging the life of the HEPA Filter. This way, the purifier performs optimally and you don't need to worry that the curtains are hugging your air purifier. Filters are usually washable if they are made of a certain material: To clean your air purifiers pre-filter, follow these steps: Carbon pre-filters serve a different purpose than simply filtering out particles. Take out the expired air purification filter according to the filter code displayed on the screen, and gently put the expired filter into the trash bin. Reduced maintenance costs are the main benefit of using a pre-filter in your air purifier. A dirty pre-filter will reduce airflow through your air purifier. As VOCs flow through a carbon filter, they are trapped by the filter through a process called adsorption.
Fortunately, using a carbon pre-filter in your air purifier helps to neutralize VOCs. First, youll need to ensure that the pre-filter is washable.
Remove all packaging materials of the air purification filters. An air purifiers HEPA filter is efficient at removing microscopic particles such as smog and smoke. Special Raksha Bandhan Sale is now live.
Black Pre Filter For Philips Air purifier Cleaner, {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}. Using a pre-filter in your air purifier will help prolong the life of the HEPA filter. Do you have an air purifier that connects to WiFi? Remove all packaging material of the new filter. So increased electricity costs are another downside of a dirty pre-filter. Philips AC3256/30 Air Purifier Antiallergen With Nanoprotect Filter - Use Manual - Use Guide PDF. Pre-filters are great because they capture dust, pollen, and hair. Hence, it is equally important to maintain the air quality by cleaning and changing the filters on time! Using a carbon pre-filter in your air purifier ensures that you have some level of protection against VOCs. When used wet, it may cause bad smell and can ruin the filter performance. Even things in your own home can emit VOCs. View cart for details. The air purifier pre-filter should be cleaned or changed at least every 30 days. HEPA filters are excellent at capturing particles as small as 0.3 microns. Pre-Filter is made to be washable for easy maintenance. For an excessively dirty pre-filter, you may need to scrub it with soap and water. When it does, you have 14 days to purchase new filters. Eventually, the pre-filter needs cleaning or replacement. Find your answer quickly and easily on our customer service page.
Of course, you want to get started right away.
You bought a Philips air purifier to improve the air quality in your home. Pre-filters remove large particles from your rooms air so the main HEPA filter doesnt have to.
Get Exclusive Price on Amazon, Coway AirMega 150 comes with 3 powerful filters namely . Hence, we recommend cleaning the Pre-Filter every 2-4 weeks depending on the environment and the runtime. Check out the video and youll know how! Make sure to only use the certified official Coway replacement filters that are engineered for efficiency and effectiveness to ensure pure air in your home or office. A dirty pre-filter will also cause the fan motor to work harder and use more energy to produce the same amount of airflow. When your air purifier has cleaned the air, it's important that the air remains clean. The app also provides information about the air quality outside. Just remove the front cover of the machine and move to the location of your choice to clean them.
And if you're already busy cleaning the filter, you might as well do the air quality sensor. HVAC Training Shop is reader-supported. This will enable the filter to dry faster as compared to natural drying because of continuous air circulation. There are also reusable pre-filters for air purifiers. Then it's a good idea to download the Air Matters app.
Air purifiers are a great option for increasing the air quality inside your home. Product successfully added to your shopping cart, Copyright Coway India 2020. The pre-filter is located upstream of the main filter, so airflow will go through the pre-filter before it touches the main filter. VOCs are gases that are emitted from solids or liquids. You air purifier cleans the air with filters.
Luckily, you don't need to check the filters on a monthly basis. Always unplug the appliance before cleaning. Breathe Naturally Universal Cut-to-Fit Activated Carbon Filters. These filters need to be replaced after some time. The use of a pre-filter addresses that issue. Then, gently push the panel against the body of the appliance (2). Yes, you should use a pre-filter in your air purifier as long as the manufacturer allows it. Copyright 1995-2022 eBay Inc. All Rights Reserved. We have 5 tips for you to get the most out of your air purifier.
These dont need to be replaced, you can just clean them instead. This prevents "polluted" air from entering the room. So it makes sense that the pre-filter takes the brunt of the dust as much as possible. To get the best results from your air purifier, it's important you clean it.
The air purifier may also make more noise, because it's working hard to clean all the pollutants in the air. With the app, you can easily operate your air purifier remotely and you can monitor the air quality in your home right away. Luckily, the air purifier gives you a reminder when it's time to do this. Air purifiers with humidification function. Using an air purifier can be expensive when you factor in the costs of replacing air filters. All rights reserved. That is why it's important you leave 20 centimeters of free space around the device. Changing your pre-filter ensures that it stays free and clear of debris that impedes airflow. Monday - Saturday: 9:00 AM - 9:00 PM EST These filters are made to reduce common odors such as smoke, cooking, and pets. But where do you place it and how do you take care of it?

You can easily clean this by wiping a cotton swab over the sensor. VOCs are so tiny that they are able to slip right through an air purifier HEPA filter. Filter cleaning is foremost a major aspect when it comes to ensuring efficient operation of the air purifier. Air purifier pre-filters even capture particles such as pet hair and pollen.


Ill also explain how to maintain your air purifiers pre-filter so its always performing at its best. Clean them more frequently if you use the purifier in a dusty environment. If you often go in and outside of the house, you take new air particles with you from outside. The more porous the carbon filter, the better. - eBay Money Back Guarantee - opens in a new window or tab, - for PayPal Credit, opens in a new window or tab, Learn more about earning points with eBay Mastercard, - eBay Return policy - opens in a new tab or window, - eBay Money Back Guarantee - opens in a new tab or window. Handy, because this way you'll know exactly what kinds of pollen are in the air.
This carbon pre-filter can be cut to fit your air purifier. Many air purifier pre-filters can be cleaned and reused over and over again. Many odor particles are too small to be captured by an air purifiers HEPA filter. Air purifier pre-filters are made of less-efficient filter material. This carbon pre-filter material can be cut to size for your air purifier. It needs enough room to suck in the air. If your air purifier uses a replaceable pre-filter, then the cost of the pre-filter will be much lower than the HEPA filter. Using a pre-filter will block out large debris from getting stuck in the HEPA filter. Seller assumes all responsibility for this listing. If you dont clean it regularly, it can clog the pores and affect the overall performance of the air flow. So they tend to be much cheaper to replace than HEPA filters. User manualAir Purifier forPhilips AC3256/30. The air filtration process starts from the Pre-Filter. If you dont have a reusable pre-filter, thats okay too. In addition to eliminating odors, this material also traps large particles, extending the lifespan of your HEPA filter. If your house is dusty or you have pets, you will need to change your pre-filter more often. Wash the pre-filter under a running tap. Sunday: 9:00 AM - 6:00 PM EST, Use manuals file type: PDF.
You can get pre-filter material at reasonable prices, so replacing one wont hurt your wallet. Then, gently push the panel against the body of the appliance (2). Cleaning an air purifier pre-filter is like cleaning other types of reusable filters. You can clean the dust with a dry cloth, or choose to vacuum or rinse it with water. Pull the bottom part of the front panel to remove it from the appliance. This is because there is more surface area for the VOCs to adhere to in a porous carbon filter. So what are volatile organic compounds anyway? Worlds Largest R&D Centre in Air Care. Does it really matter to clean the filters? Using a pre-filter in your air purifier is essential to maintain the health of your air purifiers main HEPA filter. The main issue with VOCs is that they can cause health issues. To reattach the front panel, mount the panel onto the top of the appliance first (1). The display will show a filter code when they need to be replaced. Coway uses the Cartridge technique for efficient filtration which enables you to directly pull the Pre-Filter from the air purifier without the need of dissembling the body. Clean the air quality sensor, the dust inlet and the dust outlet with a lightly moistened cotton swab. We only use your feedback to improve the website, we won't respond. Many air purifiers use washable pre-filters that are reusable.
But those particles will build-up on the pre-filter over time. Replacing HEPA filters are the primary ongoing cost of using an air purifier. Philips - Air Purifiers. Clean the air quality sensor inlet and outlet with a soft brush. .wp-show-posts-columns#wpsp-3278 {margin-left: -2em; }.wp-show-posts-columns#wpsp-3278 .wp-show-posts-inner {margin: 0 0 2em 2em; }, .wp-show-posts-columns#wpsp-3283 {margin-left: -2em; }.wp-show-posts-columns#wpsp-3283 .wp-show-posts-inner {margin: 0 0 2em 2em; }. It captures the larger dust particles, hair, pet fur and dander through the micro mesh. It goes without saying that every breath you take has an effect on your health and overall wellbeing. Get Exclusive Price on Amazon The display will show F0 when it's time to clean the pre-filter.
Never immerse the appliance in water or any other liquid. The pre-filter is not as effective as the main filter at removing particles from the air. By doing so, youll extend the life of the HEPA filter, saving you money in the long run.
Only the pre-filter is washable. Eye, nose, and throat irritation are some of the common effects. Convenient, because now you won't forget. A typical reusable filter just needs to be sprayed down with water to remove particles. Put the unpacked air purification filters back into the appliance. This will give your HEPA filter more room to capture the microfine particles that its designed to capture.
However, volatile organic compounds (VOCs) are often much smaller than 0.3 microns. Something went wrong. HVAC Training Shop is reader-supported. You can find it in the App Store or the Play Store. That is because the air purifier locks itself if you don't replace the filters. I earn from qualifying purchases. If youve walked an extra mile to get an air purifier in your house to ensure pure air, it is important at the same time to maintain it in the long run. This prevents exposure to the virus and allergens trapped by Carbon and HEPA filter. In fact, most air purifiers come with pre-filters, so chances are that your air purifier already has one. 1-888-744-5477 Air purifier pre-filters capture dust and other large particles. Coway AirMega 150 comes with 3 powerful filters namely Pre-Filter, Carbon Filter and the Anti-Flu Green True HEPA Filter. If you notice that your air purifier is unable to eliminate odors from your home, its time to try out a carbon pre-filter. To reattach the front panel, mount the panel onto the top of the appliance first (1). You can simply hang the wet pre filter on the front cover and switch on the air purifier. If the pre-filter is very dirty, use a soft brush to brush away the dust.
As an Amazon Associate, I earn from qualifying purchases.
An air purifier pre-filter removes particles from your rooms air before the main HEPA filter. The air purification filter is not washable nor vacuum cleanable. Carbon pre-filters specialize in eliminating odor particles so your room doesnt have any bad smells. As the first line of defense, they filter out many particles before the particles get to the HEPA filter. they are trapped by the filter through a process called adsorption. Receive the best promotions and personal advice. Related Posts For the air purifier to function optimally, it's important that you give it a good place in the room. The Cartridge design with Batch separation helps to clean and replace filters without the need to carry the entire purification unit. Cleaning products, air fresheners, and pesticides are some household items that emit VOCs. But HEPA filters tend to get clogged up by larger particles such as dust and pollen. In the manual, you'll find which filter fits in your air purifier. Copyright 2022 ManualsFile.com. The Coway Air Mega 150 is designed in a way where it pulls the contaminated air from the front and purifiers through filters, pushing the air through the top. Well explain more below. Put the pre-filter back into the appliance. In this case, you won't notice much of a difference if you use of an air purifier.
That doesnt matter, since removing tiny particles from the air is not the purpose of the pre-filter. Before using the appliance, remove all packaging materials of the filters and place the filter into the appliance as described below. Make sure that you completely dry out the Pre-Filter before placing it in the air purifier. This is a huge benefit because pet hair and pollen can quickly clog up a HEPA filter. Some pre-filters are disposable and should not be cleaned and reused.
Clean the air quality sensor every 2 months for optimal functioning of the purifier. Exposure to VOCs can also cause headaches and nausea.
Using a pre-filter helps keep maintenance costs down by prolonging the life of the HEPA Filter. This way, the purifier performs optimally and you don't need to worry that the curtains are hugging your air purifier. Filters are usually washable if they are made of a certain material: To clean your air purifiers pre-filter, follow these steps: Carbon pre-filters serve a different purpose than simply filtering out particles. Take out the expired air purification filter according to the filter code displayed on the screen, and gently put the expired filter into the trash bin. Reduced maintenance costs are the main benefit of using a pre-filter in your air purifier. A dirty pre-filter will reduce airflow through your air purifier. As VOCs flow through a carbon filter, they are trapped by the filter through a process called adsorption.
Fortunately, using a carbon pre-filter in your air purifier helps to neutralize VOCs. First, youll need to ensure that the pre-filter is washable.
Remove all packaging materials of the air purification filters. An air purifiers HEPA filter is efficient at removing microscopic particles such as smog and smoke. Special Raksha Bandhan Sale is now live.
Black Pre Filter For Philips Air purifier Cleaner, {"modules":["unloadOptimization","bandwidthDetection"],"unloadOptimization":{"browsers":{"Firefox":true,"Chrome":true}},"bandwidthDetection":{"url":"https://ir.ebaystatic.com/cr/v/c1/thirtysevens.jpg","maxViews":4,"imgSize":37,"expiry":300000,"timeout":250}}. Using a pre-filter in your air purifier will help prolong the life of the HEPA filter. Do you have an air purifier that connects to WiFi? Remove all packaging material of the new filter. So increased electricity costs are another downside of a dirty pre-filter. Philips AC3256/30 Air Purifier Antiallergen With Nanoprotect Filter - Use Manual - Use Guide PDF. Pre-filters are great because they capture dust, pollen, and hair. Hence, it is equally important to maintain the air quality by cleaning and changing the filters on time! Using a carbon pre-filter in your air purifier ensures that you have some level of protection against VOCs. When used wet, it may cause bad smell and can ruin the filter performance. Even things in your own home can emit VOCs. View cart for details. The air purifier pre-filter should be cleaned or changed at least every 30 days. HEPA filters are excellent at capturing particles as small as 0.3 microns. Pre-Filter is made to be washable for easy maintenance. For an excessively dirty pre-filter, you may need to scrub it with soap and water. When it does, you have 14 days to purchase new filters. Eventually, the pre-filter needs cleaning or replacement. Find your answer quickly and easily on our customer service page.
Of course, you want to get started right away.
You bought a Philips air purifier to improve the air quality in your home. Pre-filters remove large particles from your rooms air so the main HEPA filter doesnt have to.
Get Exclusive Price on Amazon, Coway AirMega 150 comes with 3 powerful filters namely . Hence, we recommend cleaning the Pre-Filter every 2-4 weeks depending on the environment and the runtime. Check out the video and youll know how! Make sure to only use the certified official Coway replacement filters that are engineered for efficiency and effectiveness to ensure pure air in your home or office. A dirty pre-filter will also cause the fan motor to work harder and use more energy to produce the same amount of airflow. When your air purifier has cleaned the air, it's important that the air remains clean. The app also provides information about the air quality outside. Just remove the front cover of the machine and move to the location of your choice to clean them.
And if you're already busy cleaning the filter, you might as well do the air quality sensor. HVAC Training Shop is reader-supported. This will enable the filter to dry faster as compared to natural drying because of continuous air circulation. There are also reusable pre-filters for air purifiers. Then it's a good idea to download the Air Matters app.
Air purifiers are a great option for increasing the air quality inside your home. Product successfully added to your shopping cart, Copyright Coway India 2020. The pre-filter is located upstream of the main filter, so airflow will go through the pre-filter before it touches the main filter. VOCs are gases that are emitted from solids or liquids. You air purifier cleans the air with filters.
Luckily, you don't need to check the filters on a monthly basis. Always unplug the appliance before cleaning. Breathe Naturally Universal Cut-to-Fit Activated Carbon Filters. These filters need to be replaced after some time. The use of a pre-filter addresses that issue. Then, gently push the panel against the body of the appliance (2). Yes, you should use a pre-filter in your air purifier as long as the manufacturer allows it. Copyright 1995-2022 eBay Inc. All Rights Reserved. We have 5 tips for you to get the most out of your air purifier.
These dont need to be replaced, you can just clean them instead. This prevents "polluted" air from entering the room. So it makes sense that the pre-filter takes the brunt of the dust as much as possible. To get the best results from your air purifier, it's important you clean it.
The air purifier may also make more noise, because it's working hard to clean all the pollutants in the air. With the app, you can easily operate your air purifier remotely and you can monitor the air quality in your home right away. Luckily, the air purifier gives you a reminder when it's time to do this. Air purifiers with humidification function. Using an air purifier can be expensive when you factor in the costs of replacing air filters. All rights reserved. That is why it's important you leave 20 centimeters of free space around the device. Changing your pre-filter ensures that it stays free and clear of debris that impedes airflow. Monday - Saturday: 9:00 AM - 9:00 PM EST These filters are made to reduce common odors such as smoke, cooking, and pets. But where do you place it and how do you take care of it?