Do I Need an Air Purifier for Each Room?


Do I need an air purifier for each room? This is a question that many people have when they are thinking about buying an air purifier. The answer to this is yes and no. It depends on what you want the purifier for and where you want it to be placed in your house or office.

If you want to better the air in your room, get an air purifier that cleans more than one room. For this, you can use an air purifier that is built to cover a bigger area, such as the silveronyx air purifier, which can cover 500 square meters. This is also a purifier that comes with HEPA-Pure Filter technology that is able to remove up to 99.97% of dust as small as 0.3 microns in size.

However, if you want to purify the air in your bedroom or office, you only need one purifier placed in a central location. The cleaner will first draw air from the room and then cleanse it before releasing it back into the room. You can use an air purifier with a higher CADR rating in the bedroom or office so that it gets rid of odors and pollutants in a shorter amount of time.

In short, you can use one purifier placed in a central location to clear the air in one large room, or you can use several cleaners to clear the air in smaller individual rooms.

However, this blog post will cover how you can tell if you need an air purifier in each room of your house and what type might work best for you! Stay tuned…

Do I need an air purifier for each room?

Yes and No. It all depends on the type of air purifier and its capabilities. If you have a single “whole house” unit, the answer is no – they can cover an entire home or apartment with one unit, so it’s not necessary. Look for units that offer coverage up to 775 square feet, such as Blueair Classic 605 Air Purifier with HEPASilent Filtration.

However, if you have multiple rooms in your house with bad air quality problems, then the answer obviously is yes. The good news is that today’s best room/area purifiers are quite affordable and can be moved from room to room or even taken with you when you travel. They even work in hotel rooms.

For example, the blue pure 411 auto is one of our best sellers that covers up to 388 sq ft and costs only $119.99! The Honeywell HPA300 HEPA Air Purifier Extra-Large Room is even more powerful, which cleans all the air in your home up to 4.8 times every hour. The cost of this unit is $237.74.

There are companies out there that offer residential indoor air quality testing when you buy an air purifier. We do not recommend using this approach to decide how many air purifiers your home needs. A professional indoor air quality test will show you where the pollution in your home is coming from. It can also tell you what you can do to fix it.

This, however, does not provide a direct answer on how many air purifiers you need for a certain space.

We recommend you use the Air Purifier Decision Guide from the US EPA. It will be helpful for you because it has information that can help you decide what to do. This guide is usually available at companies that test the air quality in your home, too.

For more details on how many units you need per room, see the Buying Guide.

Why Do I Need an Air Purifier?

If you’ve ever had trouble breathing in your home, then an air purifier may be the answer. Not everyone needs one, and most people shouldn’t use them for each room (though if these problems below bother or affect you), consider getting just that – it’ll take care of those irritants!

  • Asthma, allergies, and respiratory illnesses: When you have allergies or a respiratory condition, the symptoms will get worse if you breathe in dust and chemicals.
  • Smoking: Smoke is the enemy of health, and you’ll need a purifier that will take care of it. You can also use an air cleaner in wildfire zones because it helps clean up harmful particles like smoke for your family’s safety.
  • Pets: If you have pets, they might make pet dander, hair, and an odor. You can clean it with a cleaner.
  • Home renovations and construction: When you renovate your home, toxic off-gassing comes out. (Off-gassing is when chemicals come out of products or furniture.) This can be bad for people’s health. It can also make the house smell bad.

How Do Different Types of Air Purifiers Decide Whether or Not You Need an Air Purifier for Each Room

The most important thing in deciding if you need an air purifier for each room is the technology that it uses. There are many technologies on the market and some can cover bigger spaces than others.

Some gadgets can clean many rooms at once. Others may struggle to maintain the one room they are in clean. If you need to clean many rooms, you should choose a gadget that will work well for all three things: purchasing, running, and maintenance costs.

You’ll also want an air purifier with the ability to clean multiple rooms. Let’s now take a closer look at the many types of technology available.

HEPA Air Purifier

There are many different types of air purifiers on the market. The most popular type is HEPA units because they trap small particles before circulating clean air.

The EPA claims that the high-efficiency particulate air filter reduces dust, mold spores, and other small airborne particles to 0.3 microns or less. This means it removes larger and smaller particles even more efficiently.

HEPA air purifiers are great for people who want to remove allergies and dust from the air. They also work well for pet owners because they can remove all of the pet dander and hair.

UV Air Purifier

UV air purifiers destroy mold, germs, bacteria, and viruses using UV-C light in the same way that HEPA filters do. DNA harm caused by the radiation breaks down the harmful microorganisms that pass through the light rays.

Germicidal UV light is quite popular in hospitals, kitchens, laboratories, and meat-processing facilities for its disinfecting ability. The concern over airborne germs and viruses has sparked a desire among the general public for UV air cleaners.

A UV lamp is typically sold as a standalone product or as part of an air purifier with other filters.

Activated Carbon Air Purifier

To eliminate gaseous pollutants, air purifiers frequently include activated carbon filters. These highly versatile and efficient devices can adsorb various volatile organic compounds (VOCs), smoke, odors- even mists! They work by capturing these molecules with their pores on an activated surface, so they stick around for good.

Activated carbon airs purifiers can help get rid of fumes by removing them. They are good to have near a construction site or after renovating your house. You should also get one if someone smokes in your home because they will be able to get rid of the cooking fumes and odors that they make.

Ionic Air Purifier

Ionizers work differently from other air purifiers. Negative ions attach to the same particles that HEPA filters target. But too many negative ions will make these particles so heavy that they fall back down to the ground.

Pollutants can settle on surfaces, so they are easy to clean up. There are two kinds of devices that protect you from pollutants. One makes them disappear for good, but the other collect them, making them easier to clean up.

Most ionic purifiers release ozone into the air. California banned some of them because they released too much ozone. But most of them release safe levels of ozone and are not recommended for households with pets.

Multi-stage Filtration Air Purifier

Some people need to purify the air in their homes, and for different reasons. There are many models of air purifiers with different features. For example, there are HEPA filters that have activated carbon, UV lights, and ionizers.

There are air purifiers that can help people who have different types of pollutants in their homes. These include pets, dust, and smoke. People with any one of these problems can use one air purifier to take care of all three problems. If you want to buy one air purifier for different rooms or the whole house, it is best to get a multi-stage filter.

What Size Air Purifier Do I Need?

Your choice of the size of the room will depend on how big it is. To find out what size you need, you should calculate its square feet and compare it to the coverage range of the models you are thinking about buying.

  • Small: The coverage ranges from 250 to 299 square feet.
  • Medium: The coverage for this is from 300 sq. ft to 749 sq. ft.
  • Large: There are coverage ranges from 750 to 1,499 square feet.
  • Extra-large: The coverage of the area is from 1500 to 2499 sq. ft.
  • Whole-house: The coverage of the space ranges from 2500 to 3000 square feet or more.

Do Air Purifiers Work in Multiple Rooms?

It’s feasible to purify multiple rooms with a single device, but it all depends on the type of air purifier you have. It is preferable to purchase an air purifier that is at least as big as your space. If you put one in 250 sq ft., it won’t be able to clean outside any contaminated areas even if there are open doors and windows!

However, if you have a purifier that can cover 1256 sq. ft such as Coway Airmega 300, and put it in the middle of two rooms, then it will be able to clean both of them at once!

As long as there is enough space on one side for them to have their yield, people with multiple spaces they want cleaning can have some relief from asthma attacks or other illnesses.

Portable devices are great when you need to clean all of your rooms in one go. They can be moved around and used wherever, which is perfect for those who want a quick turnaround on cleaning!

Whole-Home vs. Single-Room Air Purifiers

Which is the best type of air purifier to buy? Well, it all depends on what you need. A whole-home device can clean a lot more area than a single-room model. But they are more expensive and quite heavy. This makes them difficult to move around. On the other hand, single-room purifiers can be inexpensive and lightweight, but they can only clean a limited amount of space.

However, many people invest in whole-house purifiers, while the majority opt for individual room ones. Here is the difference between them!


Whole-home purifiers are a great way to keep your house clean and healthy! These systems can be installed into an existing HVAC system, which will help it perform more efficiently because the air won’t have any bad stuff mixed in.

These devices come with a washable pre-filter that can capture large particles floating through the air. The high-capacity filter on these machines is powerful, removing smoke and dust through HEPA filtration. They come with activated carbon to remove harmful organic gases.

Most whole-house devices come with an electronic filter that can be charged to remove chemicals and other substances which are considered to be harmful.

Finally, whole-home purifiers are equipped with ionizers that help remove pollens, mold spores, and other allergens from the air. They are great because they can clean your entire house! Unfortunately, they can be costly and bulky.


On the other hand, a single-room air cleaner is a great choice for apartments and other small spaces. They don’t require much space, so you can install them in your living room to get fresh, clean air without taking up any more floor area than necessary!

These purifiers are small and light in design. They can be moved quickly from one room to another. You don’t need to go over the floor with them. It’s not hard to lift them up and place them somewhere else, making this type of device a good choice for homes with several rooms that each need a fresh supply of air.

The best thing about single-room purifiers is that they can be used in all types of spaces, large or small. They’re also inexpensive and simple to operate! Of course, the best way to keep your family safe from pollutants is to install a whole-home purifierThese systems can clean all the rooms in your house, making them a great choice if you want to improve your living environment.

However, thanks to the low cost of single-room purifiers, it’s possible for more people to invest in healthy air. We recommend buying a single-room purifier for each room in your house! This way you can always have clean air, even if you have several rooms.

Do not forget the maintenance! If you want your device to purify efficiently, make sure to use and replace its filters at regular intervals.

6 Things to Know Before Buying an Air Purifier for Each Room

An air purifier can be a great investment for your home. These devices can clean the air in your home, making them a crucial item for people who suffer from allergies and respiratory issues.

However, before you buy an air purifier, it is important to know some things. If you are buying an air purifier for every room in your house, then there are six things that you need to know:

1. The Room Size

First, you need to know how many square feet of space each device can clean. If the machine is just a little bit too small for your living room, it won’t be able to make a big difference to air quality. On the other hand, if the purifier is too big for your bathroom, it won’t even fit in there!

 2. Room Usage 

The location will determine the kind of air purifier you need. Each system uses a different type of filter, and some filters are better for removing certain substances from the atmosphere.

For instance, an ionizer might be good for improving air quality indoors if you have a lot of pollen. But a carbon-based filter is better at getting rid of pollen. So to get a machine that will work in all your rooms, you need to buy one that has different types of filters.

3. Type of Pollutant

Besides the size of the room, you also need to consider what kinds of pollutants are most common in your house. If your family members suffer from allergies, you’ll want a machine that can remove allergens from the air.

If there are chemicals in your home, it’s important to make sure the air purifier can remove those too. You’ll need to do some research on the chemicals that are usually found in your living space.

4. Filter Type

The next detail to check is the air filter type. Just like window screens keep bugs away from your home while letting fresh air inside, filters are what separates clean air from dangerous pollutants. High-quality filters can stop dust and other large particles from entering your homes. They can also get rid of the dangerous chemicals that are found in some air pollution.

5. Noise Level & Energy Consumption

If you want to use the purifier every day, it needs to be relatively quiet so you can enjoy TV shows and conversations without being distracted by white noise! It is also important to consider how much energy your new machine will use. If your electricity bill is too high, you may want to invest in a purifier with an energy-efficient design.

6. Ventilation System

If you want less humidity in your home, then you should invest in a ventilation system. Ventilation systems work by automatically removing stale odors and hot air from the inside of your home.

If there are rooms that get lots of sunshine or have big appliances, it’s important to make sure these spaces are ventilated properly! Here are a few things to keep in mind if you’re thinking about investing in a ventilation system:

Now you know what’s worth considering if you are looking to purchase the best air purifier for yourself or a family member. I hope this is helpful! I know from experience that you get what you pay for, so if you are planning to invest in one of these bad boys, then be sure to consider all of the numbers!


1. Can I move my air purifier from room to room?

Answer: Yes, you can move your air purifier from room to room. But please make sure that the air purifier is turned off before you start moving.

The purifier uses a special filter mechanism inside the unit, which separates dust particles using centrifugal force. When moving, please make sure that you hold the housing steady.

The purifier is equipped with wheels, so it can easily be moved around on your hard floor surfaces (carpets are not suitable). If you want to move the purifier over thick carpets, then please take off the wheels.

 2. Where is the best place to put an air purifier in a room?

Answer: The best place to put an air purifier is in a space where you’re noticing you have a problem with excess particles or odors. For example, if you’re considering purchasing an air purifier for your bedroom, then put it at the head of your bed. If you’re noticing excess pollen particles in your home, put it near a window where the air enters the space.

3. Are you supposed to leave the air purifier on all the time?

Answer: It depends. Some purifiers will shut down after it’s done cleaning the air and can be left on all the time; other purifiers should be turned on and off at certain times of the day.

For example, purifiers with a 3-stage filtration system should have all 3 filters running at once; the best way to determine how long each filter should run is to refer to the manual. Just keep in mind that it’s not a good idea to run an air purifier with the filters turned off, as this will reduce their lifespan.

4. Can you have 2 air purifiers in one room?

Answer: You can certainly have 2 air purifiers, but this might not be the best solution. If you’re noticing high levels of chemicals/gases, it would probably be best to get a unit specializing in removing these gases rather than getting a multi-purpose air purifier.

If you’re noticing high levels of particles such as pollen or dust, then getting a unit that specializes in removing these would also be optimal. Having 2 air purifiers in the same room will also result in lower overall filtration efficiency.

5. Can One Air Purifier Clean an Entire House?

Answer: One air purifier can clean an entire house, but it’s not possible to cover all the rooms with just one device. The coverage range of the machine will depend on its size. So, you must compute the square footage of your home and compare it to the dimensions stated in a product’s specifications.

You can buy one air purifier for each room or a single device that has the ability to clean multiple rooms. If you want to clean an entire house, go for an air purifier with multi-stage filtration. It will feature HEPA, carbon, and ionizer technologies.

6. How do I know if I need an air purifier?

Answer: You may need an air purifier if you or someone in your household suffers from allergies, asthma, chemical sensitivities, smoke sensitivity, mold sensitivities, or any combination of these conditions.

You might want an air purifier, especially if you are pregnant or have children. This is because there may be chemicals in the air that can hurt them.

7. How many air purifiers do I need for my room?

Answer: It really depends on the size of the room and what exactly you’re noticing about the air quality. If you’re noticing excess dust particles in the air, then one air purifier should be enough to handle these particles.

Suppose you’re noticing excess chemicals/gases in the air. In that case, it may be a good idea to get a purifier that specializes in removing these types of particles. If you’re noticing high levels of odors in the air, then this is a sign that you need an air purifier.

Final Thoughts

You may have heard the question, “Do I need an air purifier for each room?” This is a common misconception about these devices. The answer to your inquiry depends on what you want out of it and where that device will be placed in the house or workplace! For example, if someone has allergies, he would need one near his bed because dust mites accumulate more than anywhere else in the home.

However, if someone wanted clean, fresh smells throughout their entire home or place of business, then they may only need one per floor as long as it’s not too big of space (less than 3-4 rooms). There are also portable options available now which are able to go anywhere in the house, which is great for when you feel like it needs a boost of clean air. Most purifiers such as Trusens Z-3000 purifier can also clean large spaces up to 1425 square feet as long as they are primarily placed in one room.

Some models, such as the Alen FLEX Air Purifier can clean areas up to 700 square feet, which would be perfect for a Medium-sized room. It all really depends on the size and type of purifier you want and what you’re trying to do with it. Whichever you decide, just make sure that the room will be clean and healthy for you, your family, and your loved ones. Home

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