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Do I Need an Air Purifier in Every Room?


Air purifiers are a great way to keep the air in your home clean and healthy. It helps reduce allergy symptoms, improve respiratory conditions, and remove bacteria and microscopic particles from the air.

A common question many consumers ask is, “Do I need an air purifier in every room?” The short answer is no. You don’t need an air purifier in every room. Place air purifiers in rooms in which you spend the most time in. However, there are more things to consider before buying and using air purifiers in multiple rooms. 

Continue reading to find out if your home will benefit from multiple air purifiers in every room. 

Multiple Air Purifiers or Just one? 

Some people place an air purifier in every room in the house or an apartment. While this might be necessary for people with severe allergies and respiratory issues, it’s not needed for everyone. 


An excellent strategy to use is to place an air purifier in the rooms you use the most. Usually, this means the living room, kitchen, home office, and bedrooms. One of the many benefits of placing an air purifier in different areas of the house is you can purchase a different model for each room. 

For instance, if your children have allergies or asthma, you can choose an air purifier that is specially designed with a filtration system that produces clean quality air to help them breathe better and reduce their allergy symptoms.

Sometimes people in the household have different ailments, and if they are in separate rooms, you can cater to their needs with an air filter that has the features needed to produce high-quality clean air.

People who live in small homes, studio apartments, and other small dwellings usually only need one air purifier, but the size will vary depending on individual needs. 

Consider these things before buying separate air purifiers for every room:

  • Place air purifiers in rooms in which you spend the most time in 
  • Air quality problems you need relief for
  • Your room size in square feet plus the ceiling size for the correct coverage area of the purifier

Many of the popular air purifiers specify the recommended room size coverage are they can clean in terms of the size of the room.  

Do I need a big air purifier? 

Air purifiers are specially designed to handle specific sized rooms. To help you choose the right air purifier coverage size, the Association of Home Appliance Manufacturers (AHAM) created a label called the AHAM Verifide Label that shows the air purifier has been independently tested and meets the requirements for safe use. 

The AHAM tests for the clean air delivery rate (CADR). It represents the measurement of the number of cubic feet the air purifier model cleans in a one-hour cycle. 

The AHAM Verifide Label will show you the CADR rating so you can determine if it has the power to clean the air in your room. A good way to determine the right air purifier to suit your needs is to know the size of the room in square footage. 

How to Measure Your Rooms

Determining the square footage of the room is easier than you think when you follow the tips below: 

  • Use a measuring tape to measure L, W, H of the room; length, width, and ceiling height in units of feet
  • Multiply the three numbers, and the answer will reveal the square footage of the room
  • Here’s the equation: L x W x C = ft² (Example: 20-foot length x a 10-foot width x a 9 foot ceiling = 1,800 square feet)

Now you will need to find and buy an air purifier with close to or higher than your room coverage area. 

Room placement

Bedrooms and living rooms are the best locations to place air purifiers. It's a good idea to place air purifiers in rooms where you spend the most time in. We recommend placing them in rooms with the most traffic coming in from outdoors and external pollution contaminants.

Don’t place an air purifier where air cannot circulate throughout the room. Do not block air intakes, exit vents, or places that obstruct the flow of air. Don’t put air purifiers in corners, under tables or furniture. Leave some space around your air purifier so air can circulate properly. 

Many top brand manufacturers recommend between 15″ to 30″ of space between an air purifier and walls or furniture. 

Do air purifiers use a lot of electricity? 

Experts recommend running the air purifier 24 hours per day 7 days a week. Many consumers are concerned about their electric bill going up, but an air purifier doesn’t use any more electricity than other small devices in your home, such as a television or a lamp. Generally, consumers who use air purifiers in their homes don’t see a major change on their electricity bills. 

Are you looking for high-quality air purifiers for your home? If so, you can start breathing fresh air today with one of our HEPA medical-grade air purifiers!