Buying an air purifier to counter the high polluting of the environment levels? This air purifier buying guide aims to assist you take the best decision.
Buying an air cleanser is tricky. Without any industry standards in position in India, consumers are susceptible to the brands. The values of air purifiers can start around anywhere between Rs 8,000 and Rs 1 lakh. There are many things to consider before buying an air purifier. It is very important to undergo the specifications of each model and not blindly believe the sales executive. This buying guide aims to allow you to take an educated decision.
What to remember first
Before you head out to buy an air cleaner, note the following:
Note the size of the area (preferably in square metres) where you want to install an air cleaner
Remember that portable air purifiers are designed to cater to just one room
Avoid Ionizers, UV light-based models. These air purifiers release ozone as a byproduct which may have adverse effects.
The cost of replacing air conditioning filter and electricity costs must be kept in mind. For best results, home air cleaners should always be kept running always.
Certifications to keep in mind
There are two main standards- AHAM (American) and China certification- which can be taken seriously in the market. Most home air cleaners that are available in India do not have any of these certifications. Both the certifications ensure a minimum quality and gratification standard for an air purifier model.
Some popular AHAM Verifide brands are Blueair, Bosch, Electrolux, Honeywell, LG, Philips, Sharp, Whirlpool among others. Keep in mind that all models from all of these brands might not be certified.
Some brands like Xiaomi follow Chinese GB/T 18801 air cleaner standard.
Sort of Filter
The product quality and type of filter determines the potency of an air purifier. Specific filters target different components of air. Probably the most commonly available filter type is HEPA (High Efficiency Particulate Air). It may filter most (up to 99.9%) air borne particles of small sizes as high as 0.3 microns. For general usage, HEPA filters do the trick.
Some brands provide ultrafine particle filter combined with HEPA filter to focus on particles even finer than 0.3 microns (Divide a hair strand into 240 pieces and the width of just one such piece is equivalent to 0.3 microns). Remember that HEPA filters usually do not remove odour.
To focus on odour, you’ll have to go for an activated carbon filter over the regular HEPA filter combination. There are several forms of activated carbon filters. A number of them are light mesh-like which prevents cooking odours. Having said that, some filters offer activated carbon pellets which could remove gaseous and chemical odours.
Some brands even let you customise the filter depending on your requirement.
Air cleaner filters try not to kill air borne germs and bacteria as a whole. It is possible to be aware of filters with antibacterial coating. However, avoid UV light-based models.
Few air cleaner models offer a washable pre-filter to recapture dust as well as other large particles. Opt for a model with pre-filter because it increases the expected life associated with the filter inside.
The performance of a specific air cleaner model is rated by its coverage area, Clean Air Delivery Rate (CADR) and Air Changes Per Hour (ACH). While brands will boast concerning the CADR and coverage of a certain air cleanser model, they will decide to remain silent regarding the ACH. This is something you really need to ask to see before buying an air purifier.
What is ACH?
Air Changes each hour (ACH) is basically how frequently an air cleaner can clean the atmosphere of the claimed coverage area in one hour. This is really important because pollutants constantly enter the room while the air purifier has to constantly clean the air. Because of the pollution levels in Delhi, choose for an air purfier that provides 4 ACH. This means the air purifier is capable of washing the air for the entire claimed area four times in an hour or so or every a quarter-hour the air inside is totally replaced.
The catch here is brands tend to hide the ACH rating while showcasing an increased coverage area and CADR. If an air purifier can cover more square feet however if its ACH is just about one or two, then it will likely be less effective. Some brands like Blueair offer 5 ACH.
Other stuff to see:
Price of replacement filters and their lifespan. Filters usually cost in the selection of between Rs 1,500 and Rs 2,500 with a lifespan of around half a year. Also, don’t forget to check into the option of filters.
Considering electricity costs, try to search for an air cleanser with energy star ratings.
Noise levels must be around 35 decibels when the fan is running towards the top speed. Try not to opt for models with above 55 decibels rating. It tends to be disturbing while asleep.