Air Purifier: Is it Needed in Every Room?

(Last Updated On: November 6, 2019)

This is not a straightforward question to answer. There are many factors to consider when placing an air purifier in every single room. Is the person who occupies the room allergic to air purifier? What if the air purifier is releasing stagnate, bacteria-infested air into the room? Is it really necessary to place an air purifier in every single room? It would seem absurd to put an air purifier in a room that included the kitchen, TV room, and dining area all in one place. This could be an expensive proposition to purchase an air purifier and place them in every single room.

Why place an air purifier in a room where people will not be spending a lot of time in? If the household has pets then it would make sense to put an air purifier in every room because pets can get smelly after a while. If the household owns a cat and the litter box is kept inside the house instead of the garage there better be an air purifier in that room.

If the house is equipped with central air conditioning or have air conditioners in every room are air purifiers really necessary to have in every room. What if the family likes to leave the windows open during the spring and summer seasons would air purifiers be necessary to place in every room? Another factor to consider is it even healthy to place an air purifier in every room. What if parts or whole air purifiers have to be replaced when the old ones wear out. So, the point is the question is not easily answered because there are so many factors to consider. What if a family member sleeps with a C-PAP machine at night would an air purifier conflict with that person’s breathing?

IQAir [HealthPro Plus Air Purifier] 

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This air purifier carries a hefty price tag because it retails for almost $900.00 dollars which is quite a bit of money to spend on an air purifier. So, if we are talking of putting one of these in every room the cost could run a homeowner a few thousand dollars. Also, if the machine breaks down would it be expensive to have repaired?

This product is supposedly rated number one for asthma and allergies. This is according to the manufacturer of the unit. It is a medically-proven air purifying unit and it is more effective than HEPA air filters it is supposed to be 100 times better than Hepa air filters. How can you measure if it is really 100 times more effective than a Hepa unit or not? This may be an exaggeration on the company’s part.

Only this company’s exclusive HyperHEPA air filters stop ultrafine particles (down to 0.003 microns) again this is based on the company’s estimation. It will stop the smallest particles it will stop particles that are 10 times smaller than a virus. Again, this is according to the company’s information. The company is making many bold claims in the product description that really cannot be supported as true or false. The unit has powerful filtration and cover the size of a room 1125 sq. feet. Some houses are smaller than that.

Feedback: The first customer says when they turned on the unit it wasn’t working properly. About after one hour of running the unit was giving off a sickly, sweet chemical smell. The customer thought maybe the smell would outgas eventually. It did not happen three weeks after the customer bought the air purifier it was still making a nauseating smell. The customer took the filter out and noticed there was a very foul smell coming from the filter so the filter was the source of the smell. The customer pointed out what good is an air purifier if it will emit poisonous stinky air. The customer contacted the company and the company promptly sent the customer s new filter. The customer inserted the new filter and the air purifier emitted sweet-smelling, clean air.

An air purifier that costa just about $900.00 dollars should not be emitting a sweet smelling chemical smell. The unit costs this money it should be a top-notch quality unit. The customer rated the product 4 stars.

This customer bought the unit and says the chemical odor the unit emits may cause respiratory issues. Sent the unit back to the company to have the v5 unit replaced. The odor out of the box from the filtration system was distressing for the customer. The customer had the company replace all the filters and the customer tried the unit again. His pets and the customer all developed chronic coughs from the unit. The customer removed the filter and the coughs disappeared but the customer finally returned the unit in December to Amazon. The customer rated the unit one-star and he cautions to buy the unit with caution.

Again a unit that costs almost $900.00 dollars should not have so many problems with the filters and the parts having to be replaced so soon. Even after all the changes were made to the unit never worked like it was supposed to. The customer finally returned the unit.

Air purifier

Pure Enrichment PureZone 3-in-1 True HEPA Air Purifier – 3 Speeds Plus UV-C Air Sanitizer

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The unit is supposed to clean 99,97% of dust, pollen, pet dander, smoke, mold spores, and household odors. UV-C light safely destroys germs, bacteria, and fungi eliminating these smelly germs from the air. The noise level is just 30dB which gives the user a restful sleep while it purifies the air. The client can sleep quietly knowing the unit is purifying the air around the sleeping client.

It sets up easily right out of the box and has an automatic shutoff that can be shut off at 2,4,6 or 8 hours. It has an automatic shut off timer to promote energy efficiency. You get air purifier, 3-in-1 HEPA filter, user manual, industry-leading 5 Year Warranty, caring customer support 7 days a week, and the peace of mind that comes from a trusted brand with millions of customers worldwide.

Feedback: The unit is well-known because it has had over 2300 reviews written about it. It is almost $800.00 dollars cheaper than the unit reviewed directly above this one. The customer is giving the unit 5-star rating despite the fact that the filters had to be changed after 6 weeks, not 6 months. The air was very smokey and it kept the air clean in the rooms they were placed in. The air cleared up then the customer shut the units off. Their asthma came back with a vengeance so they turned the units back on. The air became smoky in the house as the filters filled up with grime. The filters may have gone out after 6 weeks because the air was so heavy from the forest fires. The customer writes if you live on the West Coast it’s time to change the filters. The customer says the units work very well.

The customer has used the unit for 6 months and it started making weird noises. The customer changed the filter but the unit is still making the noises. The client does not want to use the unit anymore. The client rated the unit one-star. The customer did not say if they contacted the company about getting a replacement or not. I wonder if the customer dropped the unit and damaged it.

The customer writes about what other units he has which are irrelevant to this particular product. The customer claims he has serious allergies and needs air purifiers in many rooms. He has three at his residence and 2 at work. He says these units have weak settings and are pretty powerless units as they can only cover small-sized rooms. The customer says that allergens still get through the filters and how he knows this is unknown. The customer says the units are too small and their original filters are useless. He switched to a more expensive filter and they work much better. The customer rates the unit one-star.

Alen FLEX Air Purifier for Bedrooms & Living Rooms 

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The unit was developed by NASA engineers using technology that cleans 700 square feet every 30 minutes which may or may not be efficient. The unit is quiet and runs more effectively on turbo speed than other units. This is what the company claims in the product description. The company makes 14 different units to fit many types of interior decor. The company says their unit is the only one that looks right in the home. I doubt this observation is true.

It sounds like the company is offering a lifetime guarantee. The unit has these features:CFM (airflow in Cubic Feet per Minute) Speed 1: 53 CFM; Speed 2: 135 CFM; Speed 3: 147 CFM; Turbo: 187 CFM ; Noise levels Speed 1: 39 dB (whisper); Speed 2: 42 dB (light rainfall); Speed 3: 49 dB (heavy rainfall); Turbo: 55 dB (box fan, medium)

Feedback: The unit costs around $376.00 dollars which is about mid-range. The unit has had over 160 reviews written about it. The customer says this is an exceptional product. He says the product comes packaged very well and the packaging is bullet-proof. The customer writes that the unit cannot be damaged in shipping because it is packaged so well. Amazon puts it in an extra big box to assure it remains stable in shipping. The customer lives in a very dusty environment and he is tired of the sneezing and coughing from the dust blowing through the house. If the sun shines through the window a lot of dust can be seen.

The customer did some extensive research and bought 5 different air purifiers before buying this one. This unit is the best one hands down. The client’s wife has quit sneezing and the client’s sinuses have cleared up. The dust bowl is gone and the air is much cleaner in the house. The customer rated the unit 5-star. The customer is very pleased with the product.

This customer is very displeased with this unit. The packaging the unit came in was o.k. The customer cycled through the speed setting and when he reached a certain speed setting the unit made a whining noise. The unit emitted a very stinky chemical unit. The customer says the filters are very low-quality. The customer called the company leaving a voicemail. The call has not been returned. The customer packed up the piece of junk and is sending it back to Amazon. The customer says this unit is a waste of $40.00 dollars. The client rated the unit one-star.

The two above reviews could not be more contrasting in content. The first customer rated the product 5-star and says it works so well. The packaging was great the first customer writes. The second customer writes the packaging was lacking, the unit was a piece of junk and was a waste of money. Could it be possible the second customer received a defective unit? These reviews are so different it does not make sense the second customer could have purchased such a lousy unit.

Alen BreatheSmart Classic Large Room Air Purifier 

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Another unit devised by the engineers at NASA. The unit is supposed to clean 1100 square feet of space every 30 minutes. A little more powerful than the unit reviewed above. This unit costs over $600.00 dollars. The unit can tackle the largest rooms in your home and it is very quiet on turbo speed. Much quieter than the competition’s units.

The company claims the unit will clean 99% of airborne particles down to 0.3 microns. The company claims the unit works better than competing units. The unit will keep the air clean for a very long time. The air-smart technology detects airborne particles down to 0.3 microns as we said above. The light on the unit gauges the air quality in the home in real time. The fan speed automatically adjusts to the ever-changing environment in the home.

Feedback: The customer says, for those who say the fan is broken in their units and it does nothing, are wrong. He checked his pre-filter and it picked up all kinds of dirt. The customer owns a 1200suare foot home. The unit cleans it very well. The client’s wife has pet-related allergies and can’t breathe. This unit was in the home for 3 days and it cleared up the wife’s sinuses. The customer rates the product 5-star. THE CUSTOMER IMPLIES THE UNIT IS WELL WORTH THE $600.00 DOLLARS.

The customer says the unit worked well for 2 years. After 2 years the unit started making horrible noises. The customer says if they would have known the unit would break down after 2 years they would have gone with a less expensive unit. For over $600.00 dollars the unit should not have broken down and the customer says the fan is useless. The customer reached out to the company by email and phone. The company did not respond to the customer. This is the second customer who contacted the customer and the company did not answer either inquiry. This company has lousy customer service. The customer rated the product 2-star. This is a very generous rating on the part of the customer.

This customer charges a lot of money for their units and they make great claims about their products that seem to not be valid. They need to greatly improve their customer service as two customers contacted the company. Like it was said earlier the company did not respond to either complaint. One customer was so disgusted with the unit they said do not buy from this company.

Air purifier

Honeywell True HEPA Allergen Remover

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The unit is recommended to be used in large rooms about 467 sq feet. The unit will clean the air 99.97% of airborne particles. The unit has 3 settings for speed and it has a turbo setting. The unit costs about $240.00 dollars.

Feedback: This is a terrible review because the customer says the unit emits a horrible chemical smell that has lasted for 18 days. The unit emits the smell even when the unit is turned off. The customer says that Honeywell cannot make this situation right. The customer will not pay the return shipping to have the unit shipped to Honeywell. Then the company would ship the customer a replacement unit. The customer rated the product one-star. The customer notes that many other clients have had similar experiences as this customer had.


The article has reviewed 5 air purifiers in an attempt to answer the question “Does an air purifier need to be placed in every room”? By the reviews depending on the power of the air purifier; the customer does not need to place a unit in every room. A big unit will take care of the whole house. Sound is also a massive factor when choosing as the quietest air purifiers are the most sought after.

Written by Irina Radosevic MD
Irina graduated from the University of Belgrade, School of Medicine as a Doctor of Medicine (MD) and spent over 3 years working in the Clinical Hospital Center Zvezdara, in the Department of Emergency Medicine. She also undertook a postgraduate in Cardiology from the same University and had previously worked for over a year as a Physician and Nutritionist Dietitian for the Fitness club Green Zone. She eventually left her chaotic but fulfilling job in the ER to pursue her passion of writing, travelling and mountain climbing which has included writing a first aid course for the alpine club of Belgrade. Irina currently works as a VA for PintMedia focusing on medical and travel writing. Feel free to connect with Irina on LinkedIn and FaceBook. Her CV can be seen here.