Blueair Blue Pure 211+ Air vs Germguardian AC4825 Reviews

Based on the recent reviews I have seen, the search for Blueair Blue Pure 211+ Air vs Germguardian AC4825 comparison often follows a recommendation from people that found great satisfaction from these two brands. Besides the price of air purifiers, you’ll be able to compare the key features that make these two models different.

Looking at the recent sales stats and positive reviews from other buyers, these two occupy top positions among the best air purifier brands in the market. 

The American Psychological Association has reported that about 60% of adults have problems with sleeping at night. 

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This can happen a few nights every week. A very common cause of this is the air around you but you might not know this. Yes! The air around you is not as clean as you think. This may come as shocking but it may interest you to know that the air indoors can be up to 5 times more polluted and more harmful than the air outside. A whopping 5 times! 

You may be wondering what the best solution is and the perfect solution is purchasing the best air purifier for your bedroom in 2020. 

So many air purifiers are decent while others are great. However, an excellent air purifier will improve your health and life by a wide margin. Air purifiers are powerful enough to purify the air in a large room. Some are also quiet enough to use at night without lights too. 

Top Rated Air Purifiers From Other Brands

With these proven and affordable models, you may find an answer to the question – what is the best air purifier on the market? 

Related: Medify Air MA-40 Medical Grade Filtration H13 True HEPA Review

They can be purchased on a budget and this is enough reason to have it in your home.

You don’t need to surf all over the net or check various websites just to get the right one that suits your needs. We are going to take you through an air purifier comparison between two highly-rated air purifiers. They are the Blueair Blue Pure 211+ Air Vs Germguardian AC4825.

Assuming you getting into a new home, consider checking out the best cheap espresso machine comparison on our website.

How To Choose Air Purifier To Buy Online 

Purchasing an air purifier is very tricky. Here is the reason why you need a good air purifier guide. It will help you know the right type of air purifier to buy. 

This is because not all air purifiers are the same. Some can be good for one thing and the others won’t. Certain technologies work in some while they are absent in others. Our air purifier guide will help you note what to look out for before buying an air purifier and also help you determine the right one for you.

Things To Consider When Choosing An Air Purifier

There are so many factors to consider before purchasing an air purifier. It is very necessary to go through the specifications of each air purifier model before buying. 

You should go out of your way to do this and not always believe what a sales executive will tell you. Our buying guide will help you make a good decision. Here is what you should consider:

  • Room size: The larger the room, the higher the capacity of the air purifier. Have this in mind. 
  • HEPA filters: HEPA filters help to eliminate allergens such as pet dander, dust, pollen, and other tiny particles.
  • Charcoal or active carbon filters: These particular filters reduce odor drastically by trapping smoke, pet odors, burnt food smells and other irritable smells.
  • Washable filters: Some filters need to be replaced. However, you can avoid all that hassle and extra cost by purchasing an air purifier that has washable and reusable filters. 
  • App-controlled air purifiers: Certain models of air purifiers help you control your appliance with an app. You can conveniently follow up on the performance of your device and control the settings straight from your tablet or smartphone.

The first thing you need to put into consideration before going on to buy an air purifier is what you want to use it for. Whether it is to eliminate smoke and dust, reduce allergies or you just want to live a healthier life, a good air purifier is the best option to combat airborne diseases. 

Air purifiers have become so popular over the years as a result of their ability to remove pollution from the air.

Also, remember that one size doesn’t fit all. When you take a look at different air purifier models, you’ll discover that they differ in some, technology and even functions. The differences could just be a slight margin. 

A manufacturer may tell you that the versatility of the air purifier comes from the several filtration stages. What we’re trying to say is that you shouldn’t always believe what these manufacturers tell you about their products. They make a lot of claims which may turn out to be false. As the buyer, you have your part to play. 

Try to get reviews of the product you want to buy and also check if other retailers are recommending the air purifier to others.

Blueair Blue Pure 211+ Air vs Germguardian AC4825 comparison

The Blueair brand is a popular brand when it comes to air purifiers. The brand has successfully produced highly rated air purifiers. 

On this note, the Blue Pure 211+ is expected to live up to the expectations of its other counterparts. It is a very powerful air purifier that could be purchased on a budget.

On the other hand, there is the GermGuardian AC5000 produced by the Guardian Technologies as their first classic which was well received by a lot of people. Now, they have advanced to come up with the GermGuardian AC4825.

For you to know which best suits your needs, we’ve placed the appliances side by side to see which one takes the lead. 

Check out our Blueair Blue Pure 211+ Air vs Germguardian AC4825 review to determine the right one for you.

Design And Size

The Blue Pure 211+ came in with a great design from the Blueair brand. This new design has a shorter size as it is 20 inches long. The air purifier has a pre-filter of different colors; black, pink, blue, gray and yellow. 

There’s no difference in price for the different colors though. The appliance is lightweight and this makes it portable. You can easily carry it about or move it around your home with ease.

The Blue Pure 211+ has a similar design like most compact air purifiers out there. It also has an all-around air intake to increase the efficiency of the fan power. Where the air goes out can be found at the top side of the appliance and only one button is used to control it. 

One striking thing you’d notice about the GermGuardian AC4825 is that in spite of its 22 inches length, it still has the same design with its bigger counterpart, GermGuardian AC5000. 

As regards the design, the GermGuardian AC4825 has an air output grill at the front and one that takes in air at the back. Its unique feature is the classic airflow that increases the efficiency of the fan. At the top, there’s a twin control panel with one UV light button, a single on/off button, a filter replacement indicator and a speed switch. 

This air purifier is compact and pretty much easy to use anywhere in your home. Based on some other GermGuardian AC4825 review found during my research, the portability of this model makes it very easy to move around the house. 

Price of Air Purifier 

Blueair is a company from Sweden that has over 20 years of experience in the air purifier industry. There are a lot of compact air purifiers and the Blue family stands to represent them. The Blue Pure 211+ is an improvement of the old model and this is our main focus. It is cost-effective and is in a competitive low range. 

As for the GermGuardian AC4825, it also has a very good price for its great functions. You can get an air purifier under 100 dollars and it will offer everything a HEPA air filter offers. The GermGuardian can be gotten for 95 dollars. You can also get a discount. 

Power Consumption 

Usually, an air purifier is specifically designed to run for a long time just so it can be efficient. Therefore, you should put power consumption at the forefront when thinking of buying an air purifier.

The Blue Pure 211+ consumes about 30 to 60 watts. As powerful as it is, this air purifier only consumes about half of what most air purifiers consume. More so, it is an air purifier with the Energy Star rating and this makes it more unique. If you’re to invest in the Blue Pure 211+, you would spend about$11 to $21 every year which is very good for an appliance of its kind.

For the GermGuardian AC4825, the power consumed is about 53 watts. This is still higher than most energy-saving air purifiers out there in the market. 

It also has an Energy Star rating. If you are to use this appliance for about 8 hours every day, you would consume about $19 every year. Beyond speculation, the power consumption level is another core difference between Blueair Blue Pure 211+ Air vs Germguardian AC4825. 


Another very important criteria to consider before buying an air purifier is the filters it comes with. You can always check the ratings of the material to know which filters it has and which one is best for you. The Blue Pure 211+ has three filtration stages and it is indicated below

  1. Pre-filter – This is the first stage of air filtration and this particular filter is just outside the air purifier. It catches large particles and can also be washed or vacuumed. 
  2. Particle filter – This air purifier doesn’t use a True HEPA filter but it makes use of a polypropylene fiber filter to capture about 99% of allergens such as dust, pollen, pet dander, and fungi.
  3. Activated Carbon Filter – This Activated Carbon filter can be found in the particle filter and it is used to combat smoke, odors and every other irritable smell.

The fact that the Blue Pure 211+ does not have a True HEPA filter is a disadvantage to it. This is especially now that air purifiers with HEPA technology are mostly sought after. In fact, they are making waves in the market today. 

In spite of this, the Blue Pure 211- is still very much powerful with its HEPAsilent technology and can be used to suit your air purifier needs.

On the other hand, the GermGuardian AC4825 has a 3-in-1 air cleaning system and also used a True HEPA filter directly from Guardian Technologies. This helps the air purifier to capture and trap the tiniest particles, as small as 0.3 microns. This includes pollen, pet dander and hair, dust, and other allergens. 

The appliance also has a pre-filter with an Activated Carbon layer that helps to eliminate smoke and any other odors. That’s one of the core differences between Blueair Blue Pure 211+ Air vs Germguardian AC4825. 

Air Purifier Room Coverage 

As mentioned earlier, the Blue Pure 211+ is very powerful for its size and it covers about 540 square feet of a room without any inconveniences. 

Its ACH is also good as it has a 5X rating. As an air purifier made by a brand known for producing highly rated air purifiers, the Blue Pure 211+ can clean your room every 12 minutes. The CADR is 350 Dust/350 Smoke/ 350 Pollen (CFM). 

This particular CADR rating is very powerful as it supersedes that of highly-powered fans.

Moving on to the GermGuardian AC4825, it can cover up to 167 square feet of a room and its ACH is 4X. This is the same with every other appliance from their brand. Its CADR is 118 Dust/ 108 Smoke/ 125 Pollen (CFM). 

Although it uses old air filtration processes, the CADR rating of the GermGuardian AC4825 is very much better than some of the latest portable devices from Guardian Technologies.


The Blue Pure 211+ comes with a HEPASilent technology and as the name implies, it helps to reduce noise drastically. It is the same with every other Blueair air purifier. This is why the air purifiers from Blueair can be quiet even with a powerful fan. 

For the Blue Pure 211+, the noise level is about 31 to 56 decibels (dB). It would interest you to know that 31 decibels is half the noise level in a library and of course, libraries are always quiet that you can hear when a pin drops. 

Even when the appliance is at its highest setting, a noise level of 56 dB can be accepted. 

The GermGuardian AC4825 uses 3 fan speeds like its bigger counterpart. However, the noise level is much preferable than that of some modern devices which have 5 fan speeds. 

Smaller size can help to reduce the fan size and as an extension, reduce the noise too. This is when it is on its highest fan speed though.

At its lowest setting, the GermGuardian AC4825’s noise level is at 40 decibels and this is higher than most air purifiers out there. When you change to the highest setting, the noise level becomes 55 decibels. 

Note that the noise level of this particular air purifier doesn’t go too well in a quiet environment as you’ll still hear a clear sound. The sound becomes more explicit if you run the appliance at its highest setting. Therefore, we believe that this air purifier may not be suitable to use in your bedroom or office.

Blueair Blue Pure 211+ Air vs Germguardian AC4825: The Alternatives

AeraMax 100 Air Purifier 

AeraMax 100 is a very good brand if you’re looking for an air purifier to buy. Introducing to you a high-performance air purifier with a True HEPA filter and under $100 is the AeraMax 100. 

This appliance does not show off a lot but it has a very good performance. 

If you have allergies or asthma, you can comfortably use it as it has been rated as asthma and allergy friendly by the Asthma and Allergy Foundation in the United States of America. It is a great solution for all types of allergies and it even helps to trap airborne flu virus.


  • Great performance rating
  • It has a good air filtration system
  • It uses super Smart Features like the Smart Sensor and Aera Mode
  • It comes with a 3-year warranty


  • It is quite noisy and may not be suitable for use in a bedroom
  • It covers only about 100 square feet of a room, which is quite small.

Dyson Pure Cool Me BP01

This is another highly rated air purifier that has a cooling power from Dyson. It has a great filtration system which makes it very powerful for use in your bedroom. It has a glass HEPA filter which helps to trap 99.97% of tiny airborne particles as small as 0.3 microns. This includes allergens, pet dander, bacteria, and pollen.

The Dyson Pure Cool Me is an air purifier from a popular air purifier brand and it is capable of combating airborne issues in a small bedroom. This is made possible because of the high-quality air filter it comes with. 

Besides, there’s another way to control this air purifier. Apart from the normal remote control, you can channel the airflow to where you want it to be, thanks to the advanced mechanism.


  • Great technology for airflow 
  • Versatility in terms of control
  • It has a unique design


  • It is expensive
  • There’s no carbon filter

Alen BreatheSmart 45i Air Purifier 

The Alen BreatheSmart 45i is one of the best air purifiers from AlenCorp. The thing is that all air purifiers from AlenCorp earned Consumers Digest’s Best Buy. This air purifier can be purchased for $100 less than the former BreatheSmart FIT50. It can cover 800 square feet and so can be used for a large bedroom. It has 4 HEPA filters to suit your unique needs:

  1. The HEPA-Pure filter is the first one and it is a quality filter that traps allergens like pet dander, pollen, and mold spores.
  2. The HEPA-Silver filter is used to reduce mold and germs. It is also good for asthma problems.
  3. Then, the HEPA-FreshPlus filter helps to eliminate smoke, VOCs and toxic chemicals.
  4. HEPA-OdorCell filter is the last one and it neutralizes pet and diaper odors.

A great feature of high-end air purifiers is the Smart Sensor with a colored light indicator. It works with the BreatheSmart 45i’s cleaning power to give you the best air quality. It also saves energy and increases filter life in the process. 


  • It has a good general rating
  • It includes Smart Features like the Smart Sensor and WhisperMax technology
  • You can easily customize the color options
  • It is very quiet and can be used in a bedroom
  • It comes with a lifetime warranty


  • It doesn’t have a True HEPA Filter
  • It is bigger than most average bedroom air purifiers.

Frequently Asked Questions 

Do Blue air purifiers emit ozone?

Blueair air purifiers don’t emit ozone. They only help to reduce the amount of ozone concentration in indoor air. All air purifiers have been tested with particle filters and smoke stop filters. The conclusion is that all Blueair air purifiers minimize ozone from indoor air.

Does GermGuardian ac4825 emit ozone?

This is not a problem as the UV lights emit light at a very low frequency which is not possible to emit ozone. The GermGuardian AC4825 does not emit ozone. A few people who bought the appliance say there’s a blinking red light that is outside the box.

How long does it take for an air purifier to clean a room?

An air purifier should be up and running for the whole day as dust, allergens and other airborne particles diffuse throughout the day. An air purifier can clean a room in about 30 minutes to 2 hours.

How long do GermGuardian filters last?

You should replace your GermGuardian® air purifier filters every 6–8 months depending on how you use the purifier.

Can you clean filters in an air purifier?

You can always clean the outer part of your air purifier with a soft or damp cloth. You can use a soft brush to clean the top air vent. 

If you decide to clean the inside of the air purifier, ensure that you remove the filters and use just a dry and soft cloth to wipe it. Whatever you do, DON’T wash the HEPA or CARBON filters.

When should I change my Blueair filter?

For maximum performance, the BlueAir brand advises that you change your filters every six months. 

Related: Levoit Air Purifier LV-H132 vs Core 300 Comparison


In conclusion, the Blue Pure 211+ is a very powerful air purifier that has 3 stages of air filtration. This helps it trap allergens such as dust, pollen, and then smoke, germs, and odor in a large room. Its smart features are great and you’ll just love it more than pure performance.

Our GermGuardian AC4825 review conclusion is that it is also a good air purifier that comes with a 3-in-1 cleaning system from Guardian Technologies. 

It is small in size and is lightweight. It has enough power to keep you healthy in a room that an air purifier of double the size can do.

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