Buying an air cleaner to counter the high air pollution levels? This air purifier buying guide aims to assist you take the best decision.
Buying an air cleanser is tricky. With no industry standards set up in India, individuals are susceptible to the brands. The values of air purifiers can cover anything from 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 endure the specifications of every model and not blindly believe the sales executive. This buying guide is designed to help you take an informed decision.
Items to remember first
Prior to you heading off to buy an air cleaner, note the following:
Note how big is the space (preferably in square metres) where you desire to install an air purifier
Remember that portable home air cleaners are meant to appeal to just one room
Avoid Ionizers, UV light-based models. These home air cleaners release ozone as a byproduct which may have undesireable effects.
The expense of replacing air filter and electricity costs should always be kept in mind. For best results, air purifiers must be kept running always.
Certifications to keep in mind
There are two standards- AHAM (American) and China certification- which are taken seriously in the market. Most air purifiers that are available in India would not have some of these certifications. Both the certifications ensure the absolute minimum quality and gratification standard for an air purifier model.
Some popular AHAM Verifide brands are Blueair, Bosch, Electrolux, Honeywell, LG, Philips, Sharp, Whirlpool amongst others. Note that all models because of these brands might not be certified.
Some brands like Xiaomi follow Chinese GB/T 18801 air cleanser standard.
Type of Filter
The product quality and type of filter determines the effectiveness of an air purifier. Specific filters target different aspects of air. The absolute most commonly available filter type is HEPA (High Efficiency Particulate Air). It can filter most (up to 99.9%) air borne particles of small sizes of up to 0.3 microns. For general usage, HEPA filters do the trick.
Some brands provide ultrafine particle filter along with the HEPA filter to focus on particles even finer than 0.3 microns (Divide a hair strand into 240 pieces as well as the width of one such piece is equivalent to 0.3 microns). Note that HEPA filters do not remove odour.
To focus on odour, you’ll have to opt for an activated carbon filter over the regular HEPA filter combination. There are many kinds of activated carbon filters. Many of them are light mesh-like which prevents cooking odours. On the other hand, some filters offer activated carbon pellets which can remove gaseous and chemical odours.
Some brands even enable you to customise the filter as per your requirement.
Air purifier filters try not to kill air borne germs and bacteria in general. You can easily look out for filters with antibacterial coating. However, avoid UV light-based models.
Few air cleanser models offer a washable pre-filter to recapture dust along with other large particles. Choose for a model with pre-filter as it boosts the expected life associated with the filter inside.
The performance of a certain air purifier 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 particular air cleaner model, they’re going to elect to remain silent in the ACH. It is something you ought to ask and discover before buying an air purifier.
What is ACH?
Air Changes Per Hour (ACH) is basically how many times an air cleanser can clean the air of their claimed coverage area in an hour. This is important because pollutants constantly enter the room plus the air purifier needs to constantly clean the atmosphere. Given the pollution levels in Delhi, go for an air purfier that provides 4 ACH. This implies the air purifier is capable of cleaning the air of this entire claimed area four times in an hour or so or every fifteen minutes the air inside is completely replaced.
The catch let me reveal brands tend to hide the ACH rating while showcasing a heightened coverage area and CADR. If an air purifier can cover more square feet however if its ACH is just about a few, then it will be less effective. Some brands like Blueair offer 5 ACH.
Other activities to notice:
Price of replacement filters and their lifespan. Filters usually cost in the number of between Rs 1,500 and Rs 2,500 with a lifespan of approximately half a year. Also, don’t neglect to check into the option of filters.
Considering electricity costs, try to search for an air purifier with energy star ratings.
Noise levels ought to be around 35 decibels as soon as the fan is running at the top speed. Do not go for models with above 55 decibels rating. It is often disturbing while sleeping.