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HEPA Air Purifier Reviews Archives

Allergy and asthma sufferers place a lot of value on clean air. In fact, anyone can benefit from air purification. Let’s take a look at these two award-winning systems from Blueair to see which one is the best for you.

Blueair 403

Blueair 403

Blueair 450E

Blueair 450E










Blueair 403 HEPASilent Air-Purification System

The Blueair 403 and the Blueair 450e described below are alike except for a few key differences. Both are recipients of the Excellent Swedish Design Award. Both are capable of five room air changes per hour in spaces up to 365 square feet in size (or 19 by 19 feet). Their CADR, or Clean Air Delivery Rate, is 240 cubic feet per minute. And they are both able to filter out pollutant particles as small as 0.1 micron.

The two air purification systems differ in certain convenience features. While the 403 is capable of being mounted on casters, the 450e is not. That’s a significant detail for people who may want to move their air purifier from room to room. The Blueair models aren’t lightweight. The 403 weighs 33 pounds while the 450e is heavier than that.

The 403 lacks a remote, an on/off timer, and does not have electronic sensors but the 450e does.

Now that you’ve seen what sets them apart from each other, let’s cover the details of their function. Each Blueair system has HEPASilent technology. That’s a combination of mechanical filters and electrostatic filtration, but without the side effect of creating ozone.

On their lowest setting, both purifiers operate at 32 decibels, quieter than a conversation. Their top noise level is just 52 decibels at the highest fan speed, but that’s masked by the white noise effect it creates.

Both systems feature a magnetic filter timer to alert you when you need to change the filter inside. Each filter lasts an average of 6 months and is very easy to change in seconds without tools. The 403 captures up to 99.97% of particles, making it a true HEPA system.

More features of the Blueair 403 Air Purification System:

  • Has a carrying handle
  • While the 403 is discontinued by Blueair, the replacement filters are available for purchase in both the classic particle version as well as SmokeStop


Blueair 450E HepaSilent Digital Air-Purification System

The Blueair 450e offers electronic sensors, a remote control, and an on/off timer—features that the 403 does not have. It also has 4 speed settings, one more than the 403 offers. At its lowest setting, it’s practically silent. At the highest speed, it runs about as loud as an electric fan would normally operate.

The “e” in the model name indicates that this air purifier is part of the E-series that can run on full automatic. The ceramic sensor and optic laser tests the air quality in your room and adjusts fan speeds by itself to keep your air in top condition.

The energy consumption is very economical, ranging from 25 to 80 watts, depending on fan speed. You can run it at the top speed setting 24 hours a day and pay less than 50 cents a day, based on the average cost per kilowatt hour in the USA.

While it weighs around 43 pounds, it comes with a carrying handle so it is possible to move it around your home or workplace. The sleek, modern design of the Blueair 450e looks good anywhere, even in an office setting.

More features of the Blueair 450e Air Purification System:

  • Has a carrying handle, not compatible with caster wheels
  • While the 450e is discontinued by Blueair, the replacement filters are available for purchase in both the classic particle version as well as SmokeStop


Now that you’ve seen both air purification systems, how do you decide between them?

If you plan to move your Blueair from room to room on a regular basis, you may prefer the 403 since you can mount it on casters. It’s also a little lighter.

If you prefer to have your air purification needs taken care of automatically, consider getting the 450e. Its electronic sensors can select the appropriate fan speed so you have the cleanest air possible all day long. Plus, it comes with a remote so you can control it from a distance.

Click here to purchase Blueair 403 on!


Click here to purchase Blueair 450E on!






Smoke, dust, pet dander, and pollen make breathing tough. Asthma and allergy sufferers can now create a refuge of pure air inside their homes and offices with these HEPA purifiers from Honeywell. Let’s look at them both to see which one will be the best for you.

Honeywell 50150-N Pure HEPA Round Air Purifier, 225 sq. ft.

Honeywell 50150-N

Honeywell 50150-N

The Honeywell 50150-N cleans the air in rooms up to 225 square feet in size, or 15 by 15 feet. It’s a true HEPA air purifier because it removes 99.4% of all the bacteria and germs and 99.97% of all airborne particles down to 0.3 microns in size. It gets rid of almost 100% of the pet dander, mold spores, pollen, and smoke it encounters. It’s perfect for those with severe allergies as well as anyone who wants to breathe pure air.

The glass fiber HEPA filter cartridge inside will last up to three to five years before it needs to be replaced. It’s easy to maintain—use any vacuum to suction off particle deposits and put it back to work. The carbon pre-filter included in the box reduces smells and odors.It lasts about three months. The 50150-N notifies you when it’s time to replace the filters so you don’t need to constantly check them. This air purifier does not use ionization to clean the air, only the filters.

The round design of this purifier is ideal for quick air replacement. Choose one of three power settings to circulate air slower or faster. It takes in and sends out air from every side so you can place it anywhere in your room. It works so well that the Association of Home Appliance Manufacturers (AHAM) certified it for rooms up to 235 square feet, even larger than Honeywell’s specifications.

More features of the Honeywell 50150-N HEPA Air Purifier:

  • Honeywell offers a 5-year warranty
  • No remote control—the purifier settings are easy to change with the switches on top of the unit
  • Carrying handle on the top

Honeywell 50250-S True HEPA Air Purifier, 390 sq. ft.

Honeywell 50250-S

Honeywell 50250-S

If you look at the Honeywell 50250-S and compare it to the 50150-N we just reviewed above, it seems very similar. While this one is a little larger and heavier, the main difference is in the purifiers’ power. The 50250-S is certified for use in larger rooms measuring up to 390 square feet. But if this purifier is battling tobacco smoke or pollen, the actual rating is for 250 square feet. That makes the 50250-S more powerful than the 50150-N. It can clean and circulate pure air up to 5 times an hour in a room measuring up to 20 by 20 feet.

But what if you have a small room? Isn’t this overkill? Not at all! You can place the 50250-S on its lowest, whisper-quiet setting and let it purify the air up to 23 times an hour! This is a great product for those who live with a smoker in the home or allergy sufferers who don’t want to get rid of a beloved pet.

Like the 50150-N, this air purifier is also true HEPA. It removes up to 99.97% of pollutants down to 0.3 microns in size. You can suction off and clean the filter cartridge with a vacuum to keep using it for up to 5 years before it needs to be replaced. The carbon pre-filter needs to be replaced about every three months, but it reduces odors that can also irritate allergies. The 50250-S air purifier will warn you when it’s time to change the filters so you don’t need to constantly check them.

The Honeywell 50250-S doesn’t use ionization to clean the air. It works with just the carbon pre-filter, the glass fiber HEPA cartridge filter, and the fan motor inside. It can run all day and night to keep the air pure for you.

More features of the Honeywell 50250-S HEPA Air Purifier:

  • Honeywell offers a 5-year warranty
  • No remote control—the purifier settings are easy to change with the switches on top of the unit
  • Carrying handle on the top


If you want to clean the air in a room measuring 225 square feet or less, the Honeywell 50150-N is powerful enough for you.

If you have a larger room up to 20 by 20 feet, consider getting the 50250-S Honeywell air purifier.

Click here to purchase Honeywell 50150-N on!


Click here to purchase Honeywell 50250-S on!




Don’t suffer any longer from pet dander, mold spores, pollen, strong odors, or cigarette smoke. Get one of these two AirGenius air purifiers from Honeywell and breathe relieved. Let’s look at both models and see which one will be the best for you.

Honeywell AirGenius 4 Air Cleaner with $20 MasterCard, HFD310BRE

honeywell airgenius 4

honeywell airgenius 4

If you’ve never enjoyed how fresh indoor air can be, you’ve never used an air purifier. The AirGenius purifiers work in three stages. The air is drawn into the tower and hits the pre-filter first. There are two different kinds of pre-filters to choose from: a washable one, and a replaceable one. The replaceable one removes more odors and must be changed every three months. The permanent one can be washed with just tap water, or water with a little bit of dish detergent, if needed. Only one pre-filter at a time fits inside the AirGenius, so you have to choose which to use.

The air passes then through the second stage which is another washable filter that doesn’t have to be replaced. The final stage is an electronic ionizer. Honeywell says the purifier removes up to 99.9% of microscopic particles from the air. On the downside, there is no HEPA filter. But on the bright side, most users have reported that the AirGenius 4 banishes strong odors and relieves allergy-sufferers. It’s powerful enough to handle large rooms, and can oscillate to circulate even more air volume. It’s also a lot quieter than larger HEPA units and even the earlier Honeywell models. It has a Sleep setting for virtually silent operation.

For such a powerful filtration system it only uses the same amount of electricity as a single light bulb. It has a shutdown timer and pleasant accent lighting that works as a night light. Another handy feature on the AirGenius is the check filters reminder light.

If you’re concerned about the AirGenius putting ozone into your air, don’t worry. The US government standard for safety requires less than 50 parts per billion, and the AirGenius complies with that.

More features of the Honeywell AirGenius 4

  • Honeywell offers a 5-year limited warranty
  • Can circulate the air in a large room up to 5 times an hour
  • AHAM certified up to 250ft2
  • Tower measures about 29” by 12” by 12”

Honeywell Airgenius 5 Air Cleaner/Odor Reducer “Prod. Type: Home Environment/Air Purifiers”

honeywell airgenius 5

honeywell airgenius 5

The AirGenius 5 is like the AirGenius 4 with two upgrades. It has touchscreen controls and a germ reduction setting. The touchscreen controls are nice, but they aren’t the biggest selling point. We care more about germs.

So how does an air purifier reduce germs? This setting moves air more slowly so germs like viruses and bacteria get stuck in the filter and don’t circulate around the house. The only downside is that this is not a HEPA filter.

With germ reduction, this means that instead of four air speed settings, the 5 has five: General (the default), Sleep (very quiet), Allergen, Germ, and Max (the highest, fastest setting). Max works well when there’s been someone smoking, or there’s strong food odors, or a lot of dust. If it’s pollen season for you, try the Allergen setting to capture the most plant particles from the air.

Like the AirGenius 4, the 5 offers accent lighting, a filter check reminder light, and a shutdown timer. It uses very little electricity; about as much as a light bulb. Most users’ reviews show that they are pleased with its silent operation and are glad to be able to wash and reuse the filters to save money.

More features of the Honeywell AirGenius 5

  • Honeywell offers a 5-year limited warranty
  • Tower measures about 29” by 12” by 12”
  • AHAM certified up to 250ft2and circulates room air up to 5 times an hour
  • CADR (Clean Air Delivery Rate) values are: 161 for tobacco, 160 for dust and 170 for pollen
  • Complies with US government standards about ozone pollution



Unless you must have a touchscreen, the main difference between these two systems is the Germ Reduction setting available on the AirGenius 5.

If you want to reduce or eliminate odors, smoke, and allergens, the AirGenius 4 will be a big help to you. It does not have a touchscreen.

If you want to try reducing germs in your home, get the AirGenius 5. It can do all the that other purifier can do, plus it has this setting to cut back on colds and flu.

Click here to purchase Honeywell AirGenius 4 on Amazon!

Click here to purchase Honeywell Airgenius 5 on Amazon!