Frequently Asked Questions (FAQs) About Air Purifiers | You Want to Know

air purifier questionnaire

Due to increasing, indoor air pollution air purifiers are becoming an essential part of our home or office. Here we prepared the list of the top 30 Frequently Asked Questions about the Best air purifiers in 2021.

30 Frequently Asked Questions (FAQs) About the Best Air Purifiers 2021

1- What is an Air Purifier?

An air purifier or air cleaner is a device to catch the micropollutants from the air. The air around us is not clean or healthy; different kinds of contaminants exist or emit around us like dust, pollen, mold, pet hair, dander, VOCs, radon, ozone, and co2, etc. An air purifier helps to remove the pollutant and improve air quality. This device is beneficial for asthmatic and allergic patients.

2- How does an Air Purifier Clean the Air?

Normally air purifiers work on the principle of a trap. An air purifier works like an exhaust fan, sucks air from one side, and is discharged on the other side. An air purifier sucks air full of contaminants, but the air will be clean when its discharges on the other side. How? Here the trapping technique is applied.

For different types of pollutants, different types of traps are installed. For example, if we want to remove dust or air-borne bacteria, we should need a HEPA filter. Still, if we want to remove cigarette smoke, odor, or unpleasant smell, we need an activated carbon pre-filter.

3- Why do I need an Air Purifier?

Our physical appearance and spiritual presence feel comfortable in a purely natural environment. Nature provides us a contamination-free, pure, clean environment. Due to our greed and the wish to defeat others, we adopted the wrong techniques.

We are responsible for different kind of pollutants that exists around us. Still, now with the help of technology, we can overcome or minimize some of them with air purification appliances.

We need air 24/7 to breathe without any break; if the air quality is not good, what happens? Every organ of our body can affect by the bad air quality around us. Clean air is more important for pregnant women, infants, and toddlers.

That’s why we need to purify the air around us, especially in covered areas where we spend our maximum time. To improve indoor air quality, we need the best air purifiers because nothing is important than health.

Related Post: Best air purifiers Under $150

4- What Contributes to Poor (IAQ) Indoor Air Quality?

After the energy crisis of 1970, the construction industry’s main focus was to minimize energy consumption in homes. They built more airtight buildings to save energy, which was a great way to save energy.

But on the other side, due to the lack of fresh air circulation, humidity increases, and different micropollutants grow inside homes. The naked eye cannot see these micropollutants. There are many other sources like:

  • Kitchen activities
  • Building materials
  • VOC’s
  • Furnishing materials
  • Pets
  • Smoking

5- How do I Know Which Air Purifier I Need?

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To determine which kind of pollutant you deal with. Nowadays, a wide range of air purifiers is available in the market, according to their filters, coverage area, CADR rating, etc. Before selecting an air purifier, you should know about your environment, which kind of pollutants exist near you and how much these pollutants affect you.

For example, if you are suffering from secondhand smoke, you should need the best air purifier for smoke containing an activated carbon filter. If you have some asthmatic or respiratory problems due to dust, air-born particles, or dust mites, you should need a HEPA air purifier.

6- Are Air Purifiers Quiet?

Noise level measured in dB (decibels). As the dB level increases, the noise level becomes uncomfortable. According to studies, up to 40 dB noise level is comfortable for us. But when the noise level increased from 40 dB, it’s the beginning of disturbance. Different air purifier’s manufacturer provides the detail about dB level, from there we can determine.

Most air purifiers come at multiple speed levels; when we run at high speed, they can be loud. Noise levels may vary according to their filter type, i.e., HEPA air purifiers are louder than others. Some companies provide super quiet or silent mode air purifiers.

7- How long to Run An Air Purifier?

It depends on how much time you spend in a contaminated area. For example, if your office air quality is not good and you want to use an air purifier for your office desk or cubicle, you should run an air purifier between office timing. But at home, it may be run constantly for better results.

You can minimize the running time of an air purifier if you can control or minimize pollutants’ sources. But if you stop an air purifier without controlling the sources, the indoor air becomes unhealthy again. If you minimize energy costs, you can run an air purifier at a low fan speed.

8- Should I Sleep With the Air Purifier On?

best air purifier

Yes, you can sleep well while the air purifier is on because air purifiers provide us clean air, which helps better sleep. But some air purifiers are some noise level above 40 dB that is irritating, which can disturb your sleep. Before purchase an air purifier, it is important to check its noise level; if its noise level is more than 35dB, don’t purchase.

9- Where Should I Put My Air Purifier?

You can place an air purifier where you spend your maximum time. Normally people installed their air purifiers in the bedroom. But if you have some allergic problems from pets, then an air purifier is installed in the pets room.

If you are a smoker or affected by secondhand smoke, keep an air purifier in the smoking room or near the kitchen. Don’t place an air purifier near walls or in the corner for better performance.

10- Can I Open My Windows in a Room Where an Air Purifier is Running?

It’s fine if the outdoor environment is clean. But if the outdoor environment contains dust, pollen or smoke, or other contaminants, then it’s not good. It may decrease the life of the filter and increase the running cost of the air purifier.

11- Will an Air Purifier Clean my House Completely?

Yes, if you can afford it. Installing an air cleaning system for the whole house is costly than a portable unit. But if you cannot afford it, then portable air purifiers are best; you can use them in multiple places as you need.

12- How do I Know if My Air Purifier is Working or Not?

You can feel the difference after a few days. You can sleep well, breathe well, and feel fresh; if you have some allergic problem, it may be decreased. You can feel less morning conjunction. And when you replace or wash the filter, you can see how many pollutants are cached by the air purifier.

13- How Much Does it Cost to Operate an Air Purifier?

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It depends on the power of the fan motor and how much time you run an air purifier. In U.S. average electricity cost is 13.32/kWh. You can also calculate per day cost by this formula:

W (watts) x (Running hrs) / 1000 (kilowatts) X (rates)

35 x 12 hrs / 1000 X 0.15 cent

420 / 1000 = 0.42 x .15 = $ 0.063/day

$1.89 per month or $22.68 per year

14- Are There Side Effects to an Air Purifier?

Mostly not! But different peoples react differently in the same condition. Some ion generators or ozone air purifiers are harmful to asthmatic or lung infection patients. For more details, please check or pros/cons section given below.

15- What Does the CADR Rating Mean?

Clean Air Delivery Rate or CADR is the amount of air that an air purifier delivered after filtration that is calculated in cubic feet per minute (CFM). CADR rating measures three kinds of pollutants, dust, pollen, and tobacco smoke. A high CADR rating of an air purifier makes it faster to clean the indoor air.

16- What is the Best Air Purifier for Someone with Asthma?

Dust, smoke, ozone, and air-borne bacteria are more dangerous to asthmatic patients. In the presence of these micropollutants, they feel breathing difficulty, wheezing, and coughing. Before selecting an air purifier for asthmatic patients, keep in mind it must be ozone-free and containing a HEPA filter because a HEPA filter is the best to catch dust, dust mites, and airborne bacteria.

17- Will an Air Purifier Cure Asthma or Allergies?

best air purifier for allergies 2021

No! Air purifiers can help minimize the intensity of the panic condition, but they cannot completely cure asthma or allergies. With the help of air purifiers, you can feel better breathing and severe allergic reactions. When we minimize the exposure to pollutants that cause asthma and allergy, it may be decreased gradually.

Related Post: Best air purifiers for Allergies

18- What is a HEPA Filter?

hepa filter

HEPA is not a kind of filter; it is an efficient standard of air filters. According to the efficiency, every filter that can meet the HEPA standard is called a HEPA air filter. HEPA air filters must remove pollutants from the air up to 99.97%. HEPA filters are mostly composed of fiber or fiberglass that can catch microparticles up to 0.03 microns.

19- What is the HEPA filter Made of, and How Does it Work?

World War II introduced many inventions; HEPA’s idea (High-Efficiency Particulate Air) is one of them. In World War II, chronic poisonous gasses are used on a large scale. First of all, German’s used gas mask contains a piece of paper that can capture the chemical smoke; after then, other countries designed more efficient gas masks to avoid chemical gasses.

But nowadays, after the modern technological revolution, HEPA filters are made more efficient and economical. Now HEPA filters are not only used on an industrial level but also in need of every home.

Now air purifiers are recommended for every home on the medical ground to minimize health problems. Contaminated air circulates through the filter that catches the microparticles up to 0.03 micron and provides us clean air. These filters are minimal resistant to flow.

20- How Long Does it Take an Air Purifier to Clean a Room?

It depends on the size of the room or coverage area capacity of an air purifier. Different types of air purifiers are available in the market. Still, before selecting an air purifier, check its coverage area capacity and CADR rating then you can calculate the exact time.

21- How Often Do I Need to Replace the Filter?

Before purchase, an air purifier it’s most important to check their filter replacement cost. Some products are inexpensive, but their replacement cost is high. Normally life of air filters based on the following aspects:

  • The indoor air quality of home
  • How much time you run an air purifier
  • The number of family members
  • Room size
  • The number of pets
  • Air quality outside the home
  • Ventilation or humidity of level in the home

Normally, an air filter’s life is 3 to 6 months, but it varies according to conditions. Read the user’s manual carefully and follow the instruction about filter replacement or filter wash. Most air purifiers built-in an indicator for filter choking indication. But some cheap products are checked manually.

22- What is the Outdoor Air Quality Index (AQI), and What Does Each of the Colors Mean?

Government forecast agencies use an Air Quality Index (AQI) to inform the public about air quality; as the air quality index increases, public health risks increase. Different countries have their own indexes. The U.S. Environmental Protection Agency is categorized into six color-coding to report air quality.

The Air Quality Index (AQI) below 50 is good for health, and above 300 is hazardous for health. The AQI index based on five types of the pollutant:

  • Carbon monoxide
  • Ground-level ozone
  • Particulate matter
  • Nitrogen dioxide
  • Sulfur dioxide

23- Do Air Purifiers give off Radiation?

Different kinds of radiation exist around us; EMF is one of them. Due to the technological revolution, EMF (Electromagnetic field) is a part of our lives. Air purifiers are also emitting EMF radiation, but the value is different according to their quality.

In living spaces, an amount above then1mG is considered as high exposure. The average value of EMF emits from our different household products are:

  • Air Purifier: 1-200mG
  • Computer: 2-5mG
  • Microwave oven: 50-80mG
  • LCD monitor: 2-3mG

“According to the U.S., the Environmental Protection Agency recommended limit to exposure EMF is 0.5mG to 2.5mG.

24- Are Ionic Air Purifiers Safe?

Generally, it’s difficult to determine that ionic air purifiers are safe or not. Because that is base on the situation, normally, ionic air purifiers are not harmful. But if you have some asthmatic or lung infection, then it may be bad for you. Sometimes ionic air purifiers may help because of respiratory problems, coughing, and shortness of breath.

25- Do air Purifiers Make the Air Dry?

The simple answer about “Do air purifiers make the air dry” is no! Humidity level may be affecting the performance of air purifiers; it may reduce the life of the filter. A high moisture level attracts pollutants and provides the ideal breeding space—that why air purifiers work more to clean the air.

The humidity level is also based on temperature and pressure; changes in temperature and pressure from outside may be because of dry air, but air purifiers cannot dry or wet the air.

26- Which is a Better Air Purifier or Ionizer?

Both are good and valuable according to different features. For example, according to the coverage area, ionizer covers up 3 to 5 times more as compared to HEPA air purifiers. According to ozone emission, HEPA air purifiers are best because they are ozone-free. Still, ionizer produces some ozone layer to the atmosphere as well as if we check pollutants removal HEPA air purifiers are good because they eliminate pollutants from the air.

Still, the ionizer lowers down to the surface or walls. But if we discuss cost, ionizers are best because they have initially low investment and no maintenance or filter replacement cost. At the same time, HEPA air purifiers are initially high cost, and after that, periodic filter’s replacement cost makes costly than ionizer.

27- Do HEPA Air Purifiers Really Work?

An air purifier’s main feature is to remove contaminants from the air and provide us clean air. How successfully air purifiers perform this task? Air purifiers are beneficial to minimize pollutants, but some other factors are also significant to maintain a healthy indoor environment.

For example, proper ventilation, radon-free building material, VOC’s free paints, other furnishing materials, ozone-free appliances, low EMF exposure, and electric stoves with proper hoods despite gas stoves are additional things beneficial to get maximum results from air purifiers.

28- Do Air Purifiers Make the Room Cold or Hot?

Air purifiers cannot increase or decrease the temperature of the room. Air purifiers can only clean the air, but their efficiency depends upon the temperature. According to WHO, normal room temperature 16 – 200C is suitable, and at that temperature, air purifiers work on their maximum efficiency.

29- Do Air Purifiers Help with Mold?

Yes! Air purifiers are the best tool to get rid of airborne mold spores. An air purifier that contains a HEPA filter can trap the mold spores from the air and provide us mold-free fresh air. Mold spores can because serious health issues like allergy and asthma.

30- Do Air Purifiers Help with Smell or Odor?

If you are a pet lover or affected by secondhand smoke, you must know that air purifiers are beneficial to remove unpleasant smells from our rooms. To remove the smell, only a HEPA filter is not enough; for this purpose activated carbon filter is used as a pre-filter to catch the micro odor releasing particles and provide us clean, fresh air.