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<ul><li>With increased <keyword id="55910" type="General" weightage="20" keywordseo="air-pollution" source="Orion">air pollution</keyword>, indoor air pollution is becoming 10x worse than outdoor air pollution.</li><li>Air purifiers with Pre-filters, HEPA filters and Activated carbon filters help to fight indoor air pollution.</li><li>Below, check out things to consider before buying an <keyword id="1606234" type="General" weightage="20" keywordseo="air-purifier" source="Orion">air purifier</keyword> for your home.</li></ul>Indoor air pollution can be 10 times worse than outdoor air pollution. This is because the air in a closed room enables potential pollutants to build up more than in open spaces. Other than this, indoor air pollution is amplified by poor ventilation. Meanwhile, individuals can prevent indoor pollution in their surroundings by installing an air purifier. An air purifier will essentially filter any airborne pollutants such as pollen, smoke and dust. India is home to some of the world’s most polluted cities. The country's northern region becomes a gas chamber during this season with hazardous air quality. Cities like Kanpur, Faridabad, Varanasi, Gaya, Patna, Delhi, Lucknow, Agra, Muzaffarpur, Noida, and Gurugram suffer from the worst AQI levels; above 400 AQI. That means the people living in these cities rarely get 'healthy' (AQI 0-50) air to breathe. As per <a href="https://www.airvisual.com/world-most-polluted-cities">AirVisual's</a> report, it's only China, Bangladesh, Pakistan, and India that contribute to the world's 50 most polluted cities. Since air pollution has become a chronic issue with no long-term remedy, state and central governments are taking several measures like relocating industries away from cities, using greener technologies, giving a push to electric vehicles, and others. The current market is full of air purifiers but you won’t be able to beat the indoor air pollution if you buy the wrong machine. So understanding the size of room, technology used and other similar factors become essential when buying air purifier for your home. Here’s how to find the best purifier for your home. <cmsannotation type="cmsannotation" annotationid="Things to consider before buying" comment="subhead" text="Things to consider before buying">Things to consider before buying</cmsannotation> <cmsannotation type="cmsannotation" annotationid="Technology used" comment="subhead" text="Technology used">Technology used</cmsannotation> The very first thing is to identify the problem; there can be a presence of allergens indoors or some microbes or others. Each problem has a precise solution which can be only tackled through specific technology. An air purifier uses two purification technologies - active air purification, in which air is purified by dispersing healthy cleaning agents into the air, and other passive air purification, in which air is channelized through filters to capture pollutants or microbes. If neutralizing of microbes is required, then passive air purification will not work; this is where active air purification technology comes into action. REME (Reflective Electro-Magnetic Technology) and PHI (Photohydroionization) are examples of active air purification technologies, and PRE (pre-filters), Active Carbon, and HEPA filters are examples of passive air purification. <cmsannotation type="cmsannotation" annotationid="Type of filters" comment="subhead" text="Type of filters">Type of filters</cmsannotation> With the advancement of technology, a diverse range of filters equipped with new technologies is now accessible. The pollutant types that are blocked by the filters are dust, tobacco smoke, pollen, smoke, pet allergens, dust mite allergens, 2.5-micron particles, and 0.1 microns particles. Some of the most common air filters to look for when choosing an air purifier are Pre-filters. <ul><li>Pre-filters: Before the final filtering, the pre-filters remove large particles like hair and other small particles. This type of filter needs to be cleaned and replaced every three months.</li></ul><ul><li>HEPA filters: HEPA filters, which are known as High- Efficiency Particulate Air Cleaner filters tend to eliminate pollen, mold spores, and dust particles. These filters capture 99.97% of particles as small as 0.3 microns.</li></ul><ul><li>Activated carbon filters: Air purifiers with activated carbon filters neutralize food and chemical odors.</li></ul><cmsannotation type="cmsannotation" annotationid="Cost of filters" comment="subhead" text="Cost of filters">Cost of filters</cmsannotation> Other than the type of filters, consider the price of replacement filters. Usually, you need to change the air filter at least in every three months when you use it constantly. The cost of replacement filters can be high as ₹5000-₹7000 for air purifiers with HEPA filters. Other than this, filters for low-cost air purifiers will cost you between ₹1000-₹2000. <cmsannotation type="cmsannotation" annotationid="Coverage area" comment="subhead" text="Coverage area">Coverage area</cmsannotation> This is one of the most important factors to consider when buying an air purifier, here are a few things to keep in mind. <ul><li>It is advisable to select an entry-level air purifier for a room measuring up to 299 square feet. You can get one under ₹15000.</li><li>If you want an air purifier for 300 to 699 square feet of room, then the medium or large size air purifier will do the job. It will cost over ₹20000.</li></ul><cmsannotation type="cmsannotation" annotationid="Air delivery rate" comment="subhead" text="Air delivery rate">Air delivery rate</cmsannotation> The efficiency of an air purifier depends on the volume of air to be cleaned and the speed of air intake and throw. Air purifiers with less coverage and CADR (clean air delivery rate) will work for a smaller areas. But if you are looking for an air purifier for a big room, then go for a purifier with more coverage and CADR. <cmsannotation type="cmsannotation" annotationid="Level of noise" comment="subhead" text="Level of noise">Level of noise</cmsannotation> It is one of the most ignored but important factors which you need to consider. The noise levels in air purifiers vary with fan speed, so keep an eye on that. It’s likely that you’ll be using it throughout, so it is important to go for the one that is silent. The ideal air purifier should have a noise level of ‘20-40dB or 50-70dB.’ <cmsannotation type="cmsannotation" annotationid="Warranty and customer service" comment="subhead" text="Warranty and customer service">Warranty and customer service</cmsannotation> When buying an air purifier, the buyer should conder the product’s after-sale service. This becomes important because filter cleaning and replacement is required in every 12 to 18 months. <cmsannotation type="cmsannotation" annotationid="Smart features" comment="subhead" text="Smart features">Smart features</cmsannotation> Modern air purifiers are loaded with a plethora of features such as Wi-Fi connectivity, touch-sensitive controls and more. They can be controlled through your smartphone and give you real-time data of AQI levels in your room. Other than these, you can get detailed insight into filter health, air quality, temperature and more. Here are some air purifier recommendations based on the room size. <table style="border-width: initial; border-style: none;"></colgroup><tbody><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Coverage Area </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Air purifier </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Product link </td></tr><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Up to 320 square feet </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">SHARP Room Air Purifier FP-F40E-W </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;"><a href="https://www.amazon.in/Sharp-Purifier-FP-F40E-W-Filter-Cluster/dp/B01B0DT29A/ref=sr_1_1_sspa?keywords=air+purifier&amp;qid=1667554883&amp;qu=eyJxc2MiOiI0LjI4IiwicXNhIjoiNC43MSIsInFzcCI6IjMuNzQifQ%3D%3D&amp;sprefix=air+puri%2Caps%2C220&amp;sr=8-1-spons&amp;psc=1">B01B0DT29A</a> </td></tr><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">‎355 square feet </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Coway AirMega 150 (AP-1019C) </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;"><a href="https://www.amazon.in/Coway-Professional-Purifier-Anti-Virus-AP-1019C/dp/B08GJ57MKL/ref=sr_1_2_sspa?keywords=air%2Bpurifier&amp;qid=1667554883&amp;qu=eyJxc2MiOiI0LjI4IiwicXNhIjoiNC43MSIsInFzcCI6IjMuNzQifQ%3D%3D&amp;sprefix=air%2Bpuri%2Caps%2C220&amp;sr=8-2-spons&amp;th=1">B08GJ57MKL</a> </td></tr><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">320- 399 square feet </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Dyson Pure Cool Link Air Purifier </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;"><a href="https://www.amazon.in/Dyson-Tower-WiFi-Enabled-Purifier-Silver/dp/B078RBFG6G/ref=sr_1_7?keywords=air%2Bpurifier&amp;qid=1667554883&amp;qu=eyJxc2MiOiI0LjI4IiwicXNhIjoiNC43MSIsInFzcCI6IjMuNzQifQ%3D%3D&amp;sprefix=air%2Bpuri%2Caps%2C220&amp;sr=8-7&amp;th=1">B078RBFG6G</a> </td></tr><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">800 square feet </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Blue Star BS-AP490LAN </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;"><a href="https://www.amazon.in/dp/B077KVTHRC/ref=sspa_dk_detail_4?psc=1&amp;pd_rd_i=B077KVTHRC&amp;pd_rd_w=gCps8&amp;content-id=amzn1.sym.b3dfef88-30a1-490c-be36-e990ef384667&amp;pf_rd_p=b3dfef88-30a1-490c-be36-e990ef384667&amp;pf_rd_r=X5TM16KSAQTQGBCGXZEA&amp;pd_rd_wg=9iWmK&amp;pd_rd_r=7bd68e6a-e4c0-433f-a6be-5ac32ae41e4b&amp;s=kitchen&amp;sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWw">B077KVTHRC</a> </td></tr><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">350-400 square feet </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">TruSens Z-2000 </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;"><a href="https://www.amazon.in/dp/B07W8J3BCW/ref=sspa_dk_detail_2?ie=UTF8&amp;psc=1&amp;pd_rd_i=&amp;pd_rd_i=B07W8J3BCWp13NParams&amp;s=kitchen&amp;sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM">B07W8J3BCW</a> </td></tr><tr><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">300-350 square feet </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;">Philips Air Purifier </td><td style="border-left:solid #000000 1pt;border-right:solid #000000 1pt;border-bottom:solid #000000 1pt;border-top:solid #000000 1pt;vertical-align:top;padding:5pt 5pt 5pt 5pt;overflow:hidden;overflow-wrap:break-word;"><a href="https://www.amazon.in/Philips-AC1217-Air-Purifier-White/dp/B07J6RN9T5/ref=sr_1_10?keywords=air+purifier&amp;qid=1667554883&amp;qu=eyJxc2MiOiI0LjI4IiwicXNhIjoiNC43MSIsInFzcCI6IjMuNzQifQ%3D%3D&amp;sprefix=air+puri%2Caps%2C220&amp;sr=8-10">B07J6RN9T5</a> </td></tr></tbody></table> SEE ALSO: <a href="https://www.businessinsider.in/tech/news/oneplus-nord-watch-review-a-decent-watch-with-a-hint-of-premiumness-under-a-budget/articleshow/95281350.cms">OnePlus Nord Watch review: A decent watch with a hint of premiumness under a budget</a> <a href="https://www.businessinsider.in/tech/news/asus-rog-flow-x16-review/articleshow/93894638.cms">Asus ROG Flow X16 review: The perfect 2-in-1 gaming laptop</a>

Looking for the best air purifier? Here’s everything you must know before buying one

While there are nearly 5.68 lakh houses under various stages of construction in Delhi-NCR, any kind of periodic ban on construction by different agencies can only delay the projects, adding to the woes of the buyers. The maximum number of under-construction units is in <keyword id="18858" type="General" weightage="80" keywordseo="noida" source="Orion">Noida</keyword> and Greater Noida areas, accounting for nearly 2.70 lakh units, as per an estimate. On average, a one-month ban on all construction activity delays a project by at least 3-4 months, according to research by <keyword id="4695749" type="General" weightage="80" keywordseo="anarock" source="Orion">Anarock</keyword> consultants. As per the research, the areas in Delhi-NCR with the maximum under construction units presently include Greater Noida West, Yamuna Expressway, New Gurugram, Noida Expressway, Dwarka Expressway, Central Noida, Sector 150 (Noida), <keyword id="1464478" type="General" weightage="50" keywordseo="greater-faridabad" source="Orion">Greater Faridabad</keyword>, <keyword id="15299315" type="General" weightage="50" keywordseo="raj-nagar-ext" source="Orion">Raj Nagar Ext</keyword> (Ghaziabad), Sohna and Golf Course Ext Road. These areas together have more than 4 lakh units that are currently under various stages of construction. Greater Noida West alone has more than 1.37 lakh under-construction units currently. The air quality in Delhi-<keyword id="53426" type="General" weightage="100" keywordseo="ncr" source="Orion">NCR</keyword> has turned poor and heavy smog has started engulfing the region. This year too, to battle pollution, an action plan has been rolled out in advance, mandating that if the pollution levels breach certain levels (i.e., Stage III or 'severe'), authorities will have to enforce a ban on construction and demolition activities in NCR, except on essential projects (like railways, metros, airports, ISBTs, national security/defence-related projects of national importance). Apart from this, the construction of projects also gets hampered due to protests on the issue of land compensation. The Anarock research said that being periodic, the impact of these construction bans on overall property prices is almost negligible. Moreover, real estate prices in most cities are not so much a function of environmental concerns as of accessibility, proximity to the city centres or major employment hubs, urban mobility via various modes of public transport, and affordability. In Mumbai too, the city perennially experiences floods during monsoon, yet property prices remain steady. In fact, in the last two-and-a-half years since the pandemic, the Mumbai Metropolitan Region (MMR) has been the most active in terms of both new supply and new launches. As for Delhi-NCR, the region too has been very active. While developers restricted new supply, housing sales have been significant. In fact, the region has shed at least 23 per cent of its unsold stock in the last 2.5 years since the pandemic. Back in Q1 2020-end, the overall unsold stock in Delhi-NCR stood at 1.73 lakh units which have reduced to a little over 1.32 lakh units as of Q3 2022-end, said the Anarock research. SEE ALSO: <a target="_blank" class="c-link c-message_attachment__title_link" href="https://www.businessinsider.in/business/news/huge-hike-in-airfare-from-delhi-mumbai-to-patna/articleshow/94961347.cms">Huge hike in airfare from Delhi, Mumbai to Patna</a> <a target="_blank" class="c-link c-message_attachment__title_link" href="https://www.businessinsider.in/business/auto/news/nissan-x-trail-premium-suv-to-launch-in-india-features-specs-and-everything-you-need-to-know/slidelist/94961171.cms">Nissan X-Trail premium SUV to launch in India – features, specs and everything you need to know</a>

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Looking for the best air purifier? Here’s everything you must know before buying one

Rahul Verma

Delhi-NCR: 5.68L houses under construction; periodic bans add to buyers' woes

IANS

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