How Many Air Purifiers Do I Need? (One or More)

When it comes to air purifiers, there is no simple answer to this question. Whether you have a small home or a large mansion, the size and structure of your building will influence the number and type of air purifiers you need.

Of course, some considerations are more important than others. For example, first-time home buyers might not have a clear idea of what kind of air purifiers they need, while experienced property owners may already have a sense of what their specific requirements are.

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In general, we recommend that small home owners start by purchasing a single air purifier for their main living area. However, if you have an especially large or spacious house, you may find that multiple air purifiers are needed in order to effectively clean the air in each room.

Ultimately, whether you decide to use one or several air purifiers depends on the type of your house and its specific layout. So if you’re wondering how many air purifiers you should get for your home, we’re here to guide you through the process and help you make an informed decision!

How Many Air Purifiers Do I Need

How Many Air Purifiers Do I Need For My Home For Absolute Clean Air?

When living in highly polluted areas, it is important to take steps to protect your health and well-being. One of the most effective solutions is to use air purifiers, which can help to remove harmful pollutants and allergens from the air.

For smaller living spaces like a bedroom or kitchen, we generally recommend one central air purifier. For larger areas like a living room or den, we suggest that you consider multiple air purifiers, especially if your living space is larger than 500 square feet.

Additionally, if you spend most of your time in one particular room, such as a home office or children’s playroom, then we strongly recommend investing in a table-top or portable air purifier for that area.

In short, the key to effective air purification is finding the right balance between the size of your living space and the number and placement of air purifiers. With just a little bit of planning and forethought, you can enjoy clean, breathable air no matter where you are!

Do I Need One for Every Room? Easy Calculation Methods

When it comes to keeping your home clean and healthy, one of the most important considerations is the quality of your indoor air.

After all, we spend a large amount of time indoors, and there are a variety of factors that can contribute to poor air quality, including dust, pet dander, pollen, fumes from cleaning products, and mold spores.

While there are a number of strategies that you can use to improve the air quality in your home, such as installing HEPA filters or using natural cleaners, perhaps the simplest solution is an air purifier.

There are several easy calculation methods that you can use to determine how much air an air purifier will be able to clean in a given amount of time.

For example, if you have 1000 square feet of living space in your home or apartment, then you would need either 5 air purifiers with 200 square feet coverage each or 2 larger machines with 500 square feet coverage each.

Calculating The Amount Of Indoor Air

Here we will use a simple equation,

Volume (indoor air) = Indoor area (in sq ft) x Ceiling height (in ft)

If you have 1000 square feet of area with 8 feet ceiling height, so volume of indoor air will be calculated as,

Volume (indoor air) = 1,000 sq ft x 8 ft = 8,000 ft3

So, for cleaning 8,000 cubic feet of air, you need an air purifier that can clean air every 15 minutes in one hour.

Now you have to calculate the clean air delivery rate (CADR) or air cleaning capacity of your air purifier.

When it comes to air purifiers, one of the most important considerations is the air cleaning capacity, or CADR. This value indicates how effectively an air purifier can remove pollutants and contaminants from the air, and is typically measured in cubic feet per minute (cfm).

An average CADR is 200 cfm, which means that your air purifier can effectively clean up to 12,000 cubic feet in an hour.

Number of Air Purifiers Required

Following equation will let you know how many air purifiers you will need to clean 1000 square feet.

No. of air purifiers = Amount of air to be cleaned (in ft3/h) / Air purifier airflow (in ft3/h)

So you will need at least 3 air purifiers with average CADR of 200 cfm to clean 1000 square feet.

Single Or Multiple Air Purifiers?

You may need to think about the type of air purifier that is best suited to your particular health condition or the air quality in your home.

Additionally, if you have domestic pets or family members who suffer from chemical sensitivity or similar conditions, you may also want to take their needs into account when choosing an air purifier.

One option that is often recommended is a purifier with both a HEPA filter and an activated carbon filter. The HEPA filter is ideal for capturing tiny particles like dust and pollen, while the carbon filter works well for trapping smoke or other bad smells.

Another factor to consider is the size of your space – a larger room will typically require a more powerful air purifier with multiple fans and filtration systems.

Ultimately, the choice of whether to use a single or multiple air purifiers will depend on your specific situation and needs. Still, with some careful research and consideration, you should be able to find the right solution for improving the air quality in your home.

Do Air Purifiers Work For Whole House?

Yes, air purifiers can be an effective way to purify the air in your whole house. Typically, these systems are designed to work with your home’s HVAC system, hooking into the airflow so that they can effectively filter out pollutants and harmful particles from the air.

Furthermore, air purifiers can help to mitigate many of the common sources of indoor air pollution, such as mold spores and pollen from plants outside.

By creating clean and breathable air throughout your entire home, a good quality air purifier can help keep you and your family healthy and comfortable all year round.

So if you’re looking for a way to promote better indoor air quality, consider investing in a whole house air purification system today.

Kristen Park - Specialised Content Writer for Caresh Fresh


My name is Kristen Park and I am a senior writer specialising in how-to guides and home cleaning information at Cares Fresh. As a researcher, I take pride in digging deep to find every small detail on a topic and explaining it in a way that is easy for the reader to understand.