Tag - HVAC filters

05 Nov

Air purifier sales spike in India as its cities battle pollution

As the government fumbles over effective measures to curb severe air quality in India’s capital of New Delhi, people are increasingly looking at air purifiers for relief.

SEE ALSO: NASA reveals why New Delhi is blanketed with deadly smog

Major ecommerce businesses in India are reporting significant surge in the sales of air purifier units in the country. The product category, which has existed in India for over two decades but struggled to become a household name, has suddenly become a talking point among people on social media.

Amazon India says it sold three times more air purifiers this Diwali compared to the previous month. Almost half of all these orders came from cities such as Delhi, Gurgaon and Bangalore. Flipkart had similar findings, noting that it has seen 2.5 times growth in air purifier units sale compared to last year.

The sudden interest in air purifying products among people comes as several Indian cities report of increasingly growing air pollution after Diwali. The festival of light, which sees many people burst crackers, combined with the burning of farmlands and residual fodders in nearby states, have resulted in an unprecedented severe air quality in New Delhi and several other states in India.

Five days after Diwali, for instance, the air quality index reading of the national capital is still classified as “hazardous”. A report on UNICEF published this week found that over two billion children worldwide breathe polluted air. India and China were among the most affected countries.

Not just air purifiers, but people are also actively looking for air masks for immediate comfort. “Sales of pollution masks have jumped 6X in the last few days with customer demand being 13X over last year. The highest number of orders for pollution masks were placed by customers on Nov. 1. The demand continues to be high from northern India with most orders coming from Delhi,” an Amazon India spokesperson told Mashable India. The surge in sales happened a couple of days after Diwali, which fell on Oct. 30 this year.

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24 Oct

‘Smog Free Tower’, largest air purifier in Beijing, sparks controversy

A “Smog Free Tower” undergoing tests in Beijing’s famed 798 art zone has sparked controversy amid continuous heavy smog in the last couple of days.

The seven-meter-high metal structure, designed by Dutch artist Daan Roosegaarde and introduced to the Chinese capital as the world’s largest air purifier in late September, opened for testing and adjustment recently.

Olans air purifier OLS-K04 1

The tower boasts a capacity to purify 30,000 cubic meters of air per hour and an ability to capture at least 75 percent of PM 2.5 and PM 10 particles, creating a fresh-air area around the tower, China Youth Daily reported.

The designer also said that particles collected by the tower could be processed into black gems.

Some experts questioned the usefulness of the newly-installed air purifying tower. According to calculations by an expert, it can absorb merely 4.5 grams of PM 2.5 an hour on heavy pollution days, which is less than the equivalent of a spoonful of salt, the paper reported.

“It would work better to have the construction site covered by a piece of cloth,” the expert joked.

In other cities, various facilities aimed to combat smog have also been installed. “Perhaps people are desperate about combating smog,” commented He Jijiang of Tsinghua University.

But those smog-treating facilities are only experimental and cannot solve the fundamental problems, He said.

Beijing was again shrouded in smog, with particle concentration in the air continuing to rise from midday on Tuesday, and the heavy pollution had lasted 19 hours as of midday Wednesday.

Six of the capital’s monitoring sites reported heavy pollution, which continued to worsen, prompting the Beijing Meteorological Service to issue a yellow alert for air pollution on Wednesday, the fifth of its kind since the beginning of October.

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05 Oct

Home air purifier told you what is HVAC?

It is a common misconception to consider the air filter inside a home’s heating, ventilation and air conditioning system (also known as an HVAC) to be the most affordable and effective way of filtering your air. HVAC filters provide minimal filtration of airbone particles and deliver the air in a dispersed manner at a relatively slow rate. For maximum performance of your home HVAC system and to maintain energy efficiency levels, you should replace your filter at least every three months.

HVAC filters come in different MERV ratings. A higher MERV rating means a tighter weave, which removes smaller airborne particles than a filter with a loose weave. However, a higher MERV rating also means the filter creates more resistance to the air flowing through. This can cause more wear on your HVAC’s motor and yield higher energy costs.

Olansi K08B Air Purifier

Olansi K08B Air Purifier

HVAC vs HEPA

Even with high quality HVAC filters and frequent filter changes, HVAC air filters are made to trap only large particles in the air, missing small particles and not truly cleaning the air. In addition, since an HVAC system home air purifier delivers either warm or cool air to your home, it is primarily designed to regulate airflow and temperature, rather than to filter airborne particles out of the air. A free-standing air purifier is capable of targeting smaller particles, and an air purifier with a HEPA filter will remove up to 99.97% of allergens, including dust and mold particles. An air purifier can also be used to target specific concerns or specific areas of your home where allergens and other particles are more prevalent, like living rooms and bedrooms.

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