Air Purifier
Nowadays two types of air purifying technologies (active or passive) are being used by various air purifier companies.
Active technology based Air purifier uses ionization method for removing the pollutants from the air during the air cleaning process. These types of air purifiers emit ozone gas which could be harmful to us. On the other hand in passive technology, use different types of filters (like Hepa, activated carbon, Hisiv) to clean the air. Passive technology-based air filters are more efficient than active technology based air purifiers.

For the details of Honeywell Air Purifier I-8:
https://simplesumit.com/honeywell-air-purifier-i8/

Terms you should know before buying an air purifier

PM 2.5 – PM stands for particulate matter and 2.5 refers to the size of the particles. (2.5 meter or less in width). It causes respiratory problems and reduces visibility.

PM 10 – PM 10 is a particulate matter of size 10 meters or less in diameter. Exposure to PM10 can trigger health issues like – coughing, sneezing, high blood pressure, asthma.

Airborne allergens- Pollens, house dust mites, bacteria, mould are some common airborne allergens. Itching, coughing, sneezing, skin rashes, are some common problems occur due to airborne allergens.

Formaldehyde -these are colourless gases released from paints, glues, or adhesive. acute exposure to it can cause watery eyes, coughing, wheezing, or some skin irritations.

Toxic gases – carbon mono oxide, nitrogen oxide, sulphur oxide are some toxic gases which can be present in our houses.

Volatile organic compounds- volatile organic compounds contain a large group of chemicals/ hazardous gases that are found in bleaching agents, paints, air fresheners, cosmetics, and many other products in our home.

Apart from that activity like smoking, dry cleaning, cooking also produces hazardous gases. this can create health problems like- eye, nose, or throat irritation, headache, nausea, dizziness.

See full details of air purifiers: https://simplesumit.com/

Factors to be considered before buying an air purifier
CADR- CADR stands for clean air delivery rate, it calculates how many cubic feet or/ cubic meter of air delivered by an air purifier can filter in one minute or /hour.

ACH- ACH stands for “air change per hour”, ACH rating indicates how many times an air purifier can filter the entire enclosed area’s air in an hour.

Recommendations / certifications-
ECARF- European centre for Allergy research foundation.
IMAH- Indian medical association for preventive health.
AHAM- Association of home appliance and manufactures.
Noise level- The sound level of a good air purifier should be less than 40 decibels.

Types of Filters used in air purifier–
Pre Filter- Pre filter removes large particles such as hair fur, dust, PM10, pollen from the air. It also increases the durability of other filters.

HEPA Filter- HEPA stands for High-efficiency particulate air. These
filter can remove much smaller airborne particles nearly (0.3) micron in size.

Activated Carbon Filter- Activated carbon filters are efficient to remove smell, odour, harmful gases.
HiSiv Filter- In this filter zeolite particles are used to absorb impurities from the air.