Dhaka, Bangladesh’s bustling capital, consistently ranks among the world’s most polluted cities, with an alarmingly high Air Quality Index (AQI) that classifies it as "very unhealthy." While improving the city’s air pollution is a long-term challenge, we can take immediate steps to enhance indoor air quality. Investing in a reliable air purifier is an effective way to breathe cleaner air at home or in the office. This guide covers popular air purifier models, price ranges, and tips to help you make the right choice. What is an Air Purifier? Air purifiers are home appliances that circulate and purify the air in an enclosed area, such as a room or a theatre. Air purifier devices use two oppositely directed channels to pull in polluted air and push it out after filtering. They use filtration technologies like HEPA filters and depolluting agents like active oxygen to clean the air. Benefits of Air Purifier Breathing into clear air has tremendous health benefits, as most chronic diseases occur from inhaling polluted, dusty air. Installing an Air Purifier in your room will: Remove Allergens: Allergens in the air trigger symptoms like sneezing, congestion, watery or itchy eyes, a runny nose, phlegm in the throat, rashes, and a sore throat. Air Purifiers reduce the allergen load of a room’s air to a harmless level. Reduce Asthma Triggers: HEPA filters are tested and certified for removing about 99.97% of pollen, dust, and different airborne particles that trigger asthma-related difficulties. Read more: Is There Any Alternative to Brick Kilns? Reduce Airborne Pathogens: Purifiers with HEPA filters can catch bacterial and viral pathogens on a large scale and free the indoor air from epidemical contamination like COVID and HMPV. Filter Odours and Harmful Gases: Human living spaces can be odorous for many reasons and generate deleterious gases. A purifier can be a lifesaver, removing those odors and gases from the air. Tips for Choosing an Air Purifier for Your Home or Office Buying an air purifier may not give you the expected protection if not chosen carefully. There are key choices and considerations that a buyer must make before making the buying decision: Frequency and Cost of Replacing a Filter Filters require replacement after 6 or 12 months of regular use; for activated carbon filters, the duration is 3 months. Most purifiers provide indicator lights to show the condition of a filter and warn about an imminent replacement. However, you must learn about different filters, costs, and the average replacement frequency to find the one suitable to your budget. Clear Air Delivery Rate (CADR) This measure indicates the amount of air a purifier cleanses at its highest capacity. For example, a purifier with a CADR 250 for gases will reduce the amount of harmful gas to a level that is only possible by replacing 250 cubic feet of contaminated air with the same volume of fresh air. The higher the CADR number, the more powerful and faster the purifier is. Read more: Best Projectors to Create Home Theaters in Bangladesh in 2025 Room Size  Measuring your room’s size beforehand will help you pick the right purifier to cover that room’s space. However, manufacturers often claim more than the actual capacity of their purifiers. As a buyer, you should research well, talk to existing users, check reviews on different platforms, and make sure that your chosen purifiers do what they say. Noise A noisy Air Purifier is difficult to live with as it can disrupt the peaceful environment of your room. Check the decibel level of a device on its packaging before buying it. Types of Filters There is no single Air Purifier to filter all sorts of pollutants; some are designed to catch biological pollutants like dust and pet dander, and some filter chemical pollutants like carbon monoxide. Air Purifiers can be of different types based on their filtering technologies. Mechanical Filters: These purifiers use fans to force air through a dense web of fine fibers that catch particles. HEPA filters are an example of a quality fiber web with the finest mesh, as they can catch both microscopic and large particles. Mechanical filters can’t filter gases or odors. Read more: Best Air Purifying Plants to Reduce Indoor Air Pollution of Home/Office Carbon Filters: Purifiers using activated carbon filters are effective against certain types of gases except ammonia, formaldehyde, or nitrogen oxide. They can also remove odorous particles from the air. Many air filters come with both mechanical and activated carbon filters to provide increased protection. However, carbon fibers get saturated easily and need frequent cleaning or replacement. Ozone Generators: These devices use ozone to alter the chemical composition of certain pollutants. They may show results in some cases but are not recommended for indoor use as they can make the air quality more dangerous. Electrostatic Ionizers: Some purifiers use electrostatic models to charge aerial particles and create a magnetic effect to stick those particles on nearby surfaces or plates attached to the purifiers. These purifiers are also not recommended as they often produce ozone.  Ultraviolet Germicidal Irradiation (UVGI): Many purifiers nowadays come with UV lamps to kill airborne pathogens. This feature may increase a purifier's protective measure, but it is often not necessary. Read more: Effects of Air Pollution on Unborn Children, Neonates, Infants Photocatalytic Oxidation PCO: Photocatalytic oxidation is also about reacting with harmful pollutants to make them ineffective. But the process may also create harmful byproducts so are not recommended. Best Air Purifiers Available in Bangladesh in 2025 Most electronic home appliance manufacturers make air purifiers and market them at different prices based on their designs, capacities, and filtration technologies. Here are a few notable air purifiers available in Bangladesh: Low Range BEKO Air Purifier P6 BEKO Air Purifier P6 is a simple-looking air-purifying device made by Singer. It features a CADR of 204 m³/hour and a 3-stage filtration system combining a HEPA 13 filter, an activated carbon filter, and a simple pre-filter. The purifier can clean a 323-sf area in 27 minutes and is available for BDT 9,038. Xiaomi Smart Air Purifier 4 Lite with Google Assistant Xiaomi Smart Air Purifier 4 Lite cleans the air in a 120-square-meter room in only an hour. It comes with a CADR of 360m³/h and captures air particles as small as 0.3 microns. It produces low sound, measured at only 33.4dB, which feels more like a whisper. A PM2.5 sensor monitors the inhouse air condition and lets users know when it needs a purification. The purifier is available in Bangladesh at approximately BDT 17,200. Read more: 9 Best Indoor Water Plants That Require Minimal Care Mid Range Philips AC0650 44m² Air Purifier The Philips AC0650 offers air purification for rooms up to 44 m². It features a CADR of 170 m³/h, ultra-quiet operation (19 dB), Wi-Fi connectivity via the Air+ app, and a compact design. It uses a dual filtration system combining HEPA and pre-filter filters. The purifier is available at BDT 24,790.

We all want to live in a clean, healthy environment. But for many of us, our living space is not as clean as we would like it to be. The air that we breathe inside our homes or offices can be up to five times more polluted than the air outside! This is due to the fact that there are many chemicals and particles floating around our home, such as dust mites, bacteria, and mold spores. These pollutants can cause asthma attacks or other respiratory problems. Air purifiers are a great way to remove these pollutants from the indoor environment while leaving healthy particles intact. In addition, they protect people with asthma or allergies from triggers without restricting their activities! Air purifier buyer guide There are many factors to consider while buying an air purifier. The level of pollutants in the room, size, and type of your space will help you make a decision on how much coverage you need for the filter. Filter The first thing is to understand what kind of air purifiers are available out there? There are different types of filters available which vary by price range, effectiveness against different kinds of particles, etc. If you have pets, allergies or asthma this should also affect your choice as some models do not work well with pet hair. Also, check if the model has any pre-filter that collects larger dust particles before passing through fine filters so they don't clog up too soon. Read WiFi Wireless Router Buyer Guide with Price Ranges in Bangladesh Features Some common features that are available on air purifiers include automatic filter replacement reminders, sleep mode, and filter life indicator. An automatic filter replacement reminder reminds you when the filter needs to be replaced. Sleep mode dims the light on the machine and keeps it running quietly so you can get a good night's sleep without being disturbed by noise. Filter life indicator tells you how long the filters will last before needing to be replaced. Some models come with remote controls which give you control over settings such as fan speed, timer, and child lock without having to go near the machine. Read 4K UHD TV buying guide: Some popular Smart TV models in Bangladesh Room Size The size of your room also determines what type of air purifier you should buy. If your room is small then an air purifier with a small filter would be enough. However, for larger rooms, you'll need an air purifier with a bigger filter or multiple filters. Type of your Space The type of your space is also important to consider. If you have an open floor plan then you'll need an air purifier that can cover the entire area. Read Choose the Right Curtains for Your Home: The Ultimate Guide Air Purifier Price in Bangladesh When you go to buy an air purifier, you will have several options. However, picking one from many is a daunting task. Hence, we have listed the 10 best air purifiers available in Bangladesh. BEKO Air Purifier P5-ATP5100I It is a high-efficiency air filter (HEPA), which also comes with an activated carbon filter. P5-ATP5100I is equipped with three-speed features that give you 360 degrees of airflow. Nevertheless, the maximum noise level of 48 dBA will provide noise-free air purification service. With all these features BEKO Air Purifier P5-ATP5100I costs Tk. 9,900. Read Mechanical Keyboard Buying Guide with the Price Range in Bangladesh