Blueair 403 Air Purifier Review

Best Premium Air Purifier

I’ve scoured the internet, trawling hundreds of websites, in order to learn as much useful information as I could to assist you in buying the best air purifier to meet your needs and price point. We try to keep the information you get as plain as possible, only getting technical when absolutely necessary, because we don’t want to waste anyone’s time.

Having said that, this review is rated as the Best Premium Air Purifier and with good reason. The Blueair 403 HepaSilent Air-Purification System is manufactured by on of the most popular and established air cleaner brands out there.

Blueair 403 Air Purifier

Features and Specs

[Be sure to check out our Air Purifier Buying Guide to learn what you need to know about air cleaners before you buy and see which ones we think are the Best Air Purifiers on the market before you make a buying-decision]

To begin with, I have to point out that Blueair offers many varieties of air cleaners, and there’s a chance that you could get them mixed up. This is the 403model which sits somewhere in the vicinity of the middle of the pack between the 203 , the 503 and 603 .

The 403 features HEPASilent technology, a 3-speed fan, a the casing is built out of galvanized steel and comes with some pretty impressive CADR and ACH numbers. The unit measures 11 by 20 by 23 inches and also comes with a 5-year limited warranty.

The casing specifically caught my eye as it is not just recyclable, but there is positively zero chance of off-gassing because it isn’t made of plastic. As I continued my research on the Blueair 403 it was obvious that I had discovered a company that’s put a ton of thought and effort into actually engineering the cleaner as opposed to building garbage and focusing the most time and effort on marketing it.


The Blueair 403 depends on a strong combination of electrostatic and HEPA-like technology, being capable of ridding the air of particles as tiny as 0.1 microns in diameter. The unit utilizes an ion emitter that negatively charges the airborne pollutants which, attracting them to the unit’s polypropylene filter because they have a positive charge.

However, that’s just one of the benefits for using this kind of filter. You see, polypropylene filters are not as dense than basic HEPA filters which equals improved air flow through the cleaner, therefore reducing the consumption of energy and lowering the level of noise.

Finally, polypropylene filters are water-repellent, laying waste to even the smallest chance of mold or mildew build up which is frequently an issue for HEPA filters. Adding to the already impressive filtering power are the active carbon pre-filters which grab the bigger airborne particles and, (if that is not impressive enough) it also provides a Smoke-stop filter which destroys unpleasant odors from your home. There is also a magnetic timer on the 403 that informs you of when the filters need to be changed.

Silent Operation

The Blueair utilizes a 4-speed fan that delivers clean air into your home. The initial three settings are very quiet. In fact, they’re so quiet that it will not disturb you while you sleep and that’s something that really irritates me. For those of you that are more technically minded , the noise levels sit in between 32 and 52 decibels.

Performance Figures

My apologies, this section is for the more technically savvy customers here! The unit’s CADR (Clean Air Delivery Rate) ratings are: 240 for dust, 240 for smoke and 240 for pollen which tells you that this air purifier is capable of delivering that many cubic feet of clean air each minute. The ACH (Air Changes per Hour) rating for the Blueair 403 is 5 per hour. For the less technically minded, these figures apply to medium-size rooms of up to 365 square feet. Air flow numbers are also higher than those of your normal air purifiers because of the Blueair 403’s non-restrictive polypropylene filters.

Design and Durability

I have learned some of the factors that are often overlooked too often when picking an air purifier is sturdiness and reliability, and for a good reason, as most of the average air purifiers are manufactured out of inexpensive plastic. The Blueair 403 however, has the feel as if it came directly from a nuclear submarine with the solid steel casing. The design is modern and elegant, and blends in well with any home decor. The manufacturer obviously believes in the quality of their product because they offer a 5-year limited warranty on the 403.

A Few Final Words

The Blueair 403 HepaSilent Air-Purification System is easily one of the best premium air cleaners you will ever find. It’s also among the most quiet models that I’ve ever conducted a review on, and you can be sure it will last you for a long time regardless of how much you throw its’ way. Its pretty steep price to pay, but this particular air purifier will not leave you with any regret. If you think you may be interested in getting one for your home, check out Amazon because they always have some really nice deals as well as something else that I love – no shipping charges!