Learn about the different types of air filters, what they can and cannot do, how room size matters, operating costs and optional features, as well as why ACH rating and CADR rating are important. Also, consider special considerations for allergy and asthma sufferers. Finally, you will learn whether you should choose a HEPA, CO, UV, ionizing, or combination purifier.
Best Air Purifiers Black Friday Deals 2021 – Buying Guide
It is important to measure the space that a room purifier will be used in. An air purifier for a large living space will require a cleaner that is larger and more powerful than one intended for a smaller bedroom.
What are the most serious forms of indoor air pollution in your apartment or house?
HEPA filters are ideal for dust, pollen and pet dander. However, HEPA air filters are not suitable for viruses and bacteria, cigarette smoke, pet smells, cooking odors, and chemical gases such as VOCs.
It is possible to evaluate an air purifier’s performance by understanding its air purification ratings. It is worth considering the different features, noise levels, replacement filters prices, and any ongoing costs.
A good air cleaner is an investment in your long-term health. These 7 questions will help you narrow down your options and determine what you should look for to find the right air purifier.
1. What’s the purpose of an air purifier?
The main purpose of an air purifier is to filter the air in your home of microscopic airborne particles and other common forms of indoor air pollution.
There are fewer pollutants in your home or apartment than you think. They can be harmful to your health.
There may be some circumstances that you need an air purifier, such as a pet, pollen or dust mite allergy or living with someone who is allergic to chemicals.
You should consider what air pollutants you have to handle most, and whether the model that you are considering is made to meet your specific air purification requirements.
Even if you do not have allergies or asthma, breathing in mold spores and pet dander, pollen and dust mite waste can cause irritation to your lungs and fatigue. It can also lower immunity and lead to serious illnesses.
2. How do you match an air purifier with a room size?
A room where you spend most of your time, such as the living room, should have an air purifier. People with asthma or allergies will also benefit from additional air filtration in the bedroom.
It doesn’t matter where you place your purifier, but it is important that the space and the purifier’s filtering power in square feet are equal.
First, you must know the area. Simply multiply the room’s length by its width to calculate its square footage.
For example, a 16 ft x 25 ft lounge would be 400 square feet. A smaller bedroom measuring 10 ft x 20 ft would measure 200 sq. ft.
Most reputable companies selling air purifiers will display the recommended area for cleaning in square feet on Amazon and their website. If a manufacturer doesn’t provide this information, it is a red flag.
Which size air purifier do you really need?
Although purifiers are often advertised as having a large coverage area, it should not be considered an absolute maximum. Ideally, you want coverage that is at least 25% larger than your room’s actual square footage.
For example, an air purifier covering 400 square feet of living space would need to cover 500 square feet at minimum. For a bedroom measuring 200 sq.ft, make sure to cover at least 250 sq.ft. This will help filter dust mites and other allergens.
You should consider your pets and other factors such as higher ceilings, mold, pollen, or if you live in an area with high levels of pollution. Before you purchase, you will need at least half the coverage you require for your room.
A higher quality, larger air purifier has an additional advantage: they can still be effective in lower settings and are quieter making them perfect for bedrooms.
Poor air quality can cause severe allergies and asthma. You should look out for a larger recommended area of coverage if you have allergies to pollen, pet dander or asthma.
A high CADR rating or ACH rate is a good indicator to look at when purchasing an air purifier. These are the most popular rating factors.
3. What is the CADR Rating and how do you calculate it?
CADR stands for Clean Air Delivery Rate. This is a numerical rating system that measures the effectiveness of household air purifiers in removing particles from indoor air.
An air cleaner’s CADR rating indicates the volume of filtered water produced per minute in cubic feet. The Association of Home Appliance Manufacturers developed it in 1980 to standardize purifier performance in a measured metric.
You can apply a CADR rate to any type of air filter technology. However, you will most likely find larger HEPA-based filters advertising their CADR rating since they will naturally get a higher number than smaller purifiers.
The higher the rating, the better. Although 100 is considered low, it could still be acceptable for small desktop purifiers. For smaller rooms, 100 to 200 is better. However, 200 and above are best for larger spaces.
4. 4. What is the ACH rate?
The Air Changes Per Hour rate (ACH), measures the air purifier’s ability to filter air within a room. The ACH rate is a simple numeric scale. 1 to 2 are low, while 4 and above are high.
It is also dependent on the area of coverage for the purifier that has been measured. A 600 sq ft model would filter the air in 600 sq feet of space at 3X the ACH rate. This means that it could filter the air up to 3 times per hour in a 600 sqft room.
If indoor air pollutants are fairly equal in the house, this ACH rate will be higher in a smaller space but lower in a larger one with more air.
5. Which type of air purifier do you need?
There are four main technologies that are used by popular brands when choosing an air purifier model to purchase.
A High-Efficiency Particulate Air (HEPA) air cleaner will effectively filter airborne particles down to an extremely small 0.3 microns in any room it operates in.
HEPA filters are best for pollen, dust, pet dander and mold spores. They also work well with dust mite contaminants.
A HEPA purifier is best if this is your primary reason for buying an air purifier. It is important to use a HEPA filter that is true HEPA and not a HEPA-like filter.
Activated Carbon Filters
HEPA filters are great for indoor particle polluting, but they are not effective for animal smells, cigarette smoke, and harmful VOCs in carpets and furniture.
Activated carbon filtration is the best option for these chemical-based, gaseous contaminants.
Carbon filters are made of activated charcoal that has millions of pores. These pores absorb odors and volatile organic compounds.
High-quality room purifiers combine HEPA purification and carbon filters to provide synergistic cleaning of harmful gases and airborne particles.
Ultraviolet Air Purification
To kill airborne bacteria and viruses, specialized air cleaners like the Germ Guardian Bestseller use safe UV-C light contained in the purifier.
Additional protection is provided by UV filters against floating biological contaminants such as mold spores or pollen grains.
They are similar to carbon filters and can be combined with true HEPA filters for multistage air purification.
Electrostatic and ionizing air cleaners
The ionizing air purifiers emit negatively charged ions, which makes them different. These ions attach themselves to floating pollutants and cause them to clump together, causing them to fall to the nearest surface.
Multistage advanced air purifiers can include an electrostatic precipitator and oppositely charged collection plates. This allows for the capture of microscopic pollutants that are not captured by a HEPA filter.
Importantly, any room air filter with an electrostatic precipitator or negative ion generator should clearly state that it produces less ozone than the 0.05 ppm required by the FDA.
6. Are you looking for extra features and optional extras?
In recent years, portable air purifier technology has improved greatly. These are the optional extras and features you might want to consider when choosing which model to purchase.
This is similar to your TV remote and allows you to control your room purifier directly from your couch or dining table. Blue Air HEPAsilent models can now be controlled via an app on your smartphone.
It is best to keep air purifiers on 24/7. However, you can program them to run only during the day and then turn off at night.
Variable fan speed
Many large air purifiers have multiple fan speeds. This includes a quieter mode for bedrooms. This makes them superior to smaller, less noisy models which often only have one fan speed.
For best results with air cleaning, HEPA and carbon filters must be changed regularly. It is useful to have an indicator light or message that indicates when the filter is losing its effectiveness.
If the filter lasts longer than the manufacturer recommends, this feature could save you money.
Air Pollution Sensor
High-end room purifiers might have a sensor that detects higher levels of pollutants. This sensor will adjust the fan speed and purification according to the level.
This is especially beneficial for homes with indoor pollution, such as indoor smoking, pets visiting, or pollen season.
UV Germicidal Lamp
Most effective for killing bacteria and viruses, safe UV-C lamps designed to kill germs can be found in some multistage air filtration purifiers.
If you have children who are susceptible to getting sickly from colds and other illnesses, this is something to look out for in your purifier.
For an additional air cleaning method, some air purifiers include a negative-ion generator or electrostatic precipitator. Some research has shown that negative ions can counter fatigue caused by too many positiveions.
Importantly, all air purifiers with an ionizer and electrostatic precipitator must clearly state that any ozone produced does not exceed the FDA’s safe limit of 0.05ppm.
Many people prefer an ionizer that is only adjustable so they can turn it on or off as needed.
A Handle and Wheels
Air purifiers that are large can be very heavy. This feature is important if you want your appliance to be portable between rooms.
Best Air Purifiers Black Friday 2021
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Cleaning is still necessary
Filters are more effective when there is less dust or other indoor pollution.
Cleaning regularly with non-toxic cleaning products, combating dampness and mold, keeping pets away from living areas and reducing other indoor allergy triggers all help your air purifier to do its job better.
They don’t filter everything
For your safety and that of your family, some forms of gas-based pollutants, such as carbon monoxide or radon can be deadly. Learn about these and more in 5 dangerous indoor air pollutants here but don’t rely solely on an air purifier to deal with them.
HEPA-only filters are ineffective against VOCs and other chemicals. An activated carbon purifier can help but it’s best to minimize this hidden yet toxic form of household air pollution.
Consider Noise Levels
If the manufacturer has them, read customer reviews to see if they have any complaints about noise or decibel levels. Contrary to popular belief, smaller air purifiers can be louder than larger ones because they work harder to clean the air.
The majority of top-of-the-line air purifiers can be used in your bedroom at night thanks to their quiet mode. Many systems come with a pink noise generator to aid in sleep.
Filters Need Replacing
HEPA and activated charcoal filters must be changed regularly to ensure maximum effectiveness. There are a variety of replacement times, but the most common is between one year and six months. If your model has one, make sure to check the manufacturer’s instructions or the indicator for filter replacement.
Operating costs are included
Consider the retail price for replacement filters on any room purifier that you are interested in and add them to the total cost of your air cleaning over many years.
To save money on running costs, you should also look for an energy efficiency rating. Alen Breathesmart purifier for example claims that it uses less electricity than a 105 W lightbulb.
Examine the warranty
The manufacturer’s warranty should be included with all air purifiers. The longer the warranty, the better you can be sure that the purifier will continue to purify your home’s air for many years.
How to Choose the Best Air Purifier For Your Home
This detailed guide to buying an Best Air Purifiers Black Friday Deals 2021 has provided you with a checklist of things to consider before purchasing one.
An air purifier will make a huge difference in indoor air quality and your family’s well-being for the long term as well as for many years.