Blueair 503 Hepa Silent Air Purifier Review | Good Choice?

What makes this Blueair 503 Hepa Silent air purifier different from other purifiers and what is this new HEPA Silent technology?

HepaSilent technology makes possible to remove 99.97% airborne particles which are as small as 0.1 microns. More about this topic can be found in about air purifiers and do we need them really.

Blueair purifiers are becoming most popular these days and sell excellent. If you need HEPA silent air purifier but cheaper and intended for rooms up to 240 square feet, then check out Blueair HEPA Silent 203w purifier.

The Blueair 503 HEPA Silent purification system combines the best of mechanical and electrostatic technologies to offer the highest quality, best performance and quietest room air purifier on the market today.

Blueair 503 Hepa Silent Air Purifier
Blueair 503 Hepa Silent Air Purifier
The Blueair 503 HEPA Silent Air Purifier combines the best of mechanical and electrostatic technologies to offer the highest quality, best performance and quietest room air purifier on the market today.

Using patented HEPASilent technology and an efficient SurroundAir vent system, the BlueAir 503 air purifier effectively purifies the air in rooms as large as 580 square feet, capturing 99.97% of the tiniest 0.1-micron particles on level one, including allergy-provoking pollen grains, dust mites, mold spores and pet dander particles.

With the quietest operation in the industry, a very energy-efficient, and an award-winning design, the Blueair 503 HEPA silent air cleaner is simply the best choice for anyone who cares about clean, pure air.

Blueair air purification systems are little expensive compared to Honeywell air purifiers. But they are well worth the price.


Blueair 503 Hepa Silent Air Purifier

The Blueair 503 air purifier uses 2 stage filtration system which makes possible to remove 99.97% of particles down to 0.1 microns. The first stage of filtration is electrostatic ionizer. It releases negative charges and causes airborne particles to cling together.

Studies say that ionizer filtration system releases ozone which can damage lungs. But it is said that here no ozone is generated. In second stage Blueair HEPASilent filter captures particles clusters.

blueair 503 hepasilent replacement filter

Blueair 503 Hepa Silent air purifier is Energy Star Rated room air cleaner. What does that mean? Energy Star certified room air purifiers are 40% more energy efficient compared to models which don’t have that certificate.

That should save buyer about 230 kWh/year and approximately 25$ on utility bills. These savings could add up to $200 over its lifetime. BlueAir 503 has four-speed settings. It is silent on all speed settings.

It will be little louder on highest speed but nothing that would disturb house peace. You can even leave it on while sleeping. Noise level is something on a scale from 32 dB on low to 66 dB on high.

It is whisper quiet on the first setting and soft enough on the second setting not to disrupt sleep. We leave it at that setting overnight. When we’re out we leave it on the highest setting…Buyer


Should You Buy Blueair 503 Air Purifier?

The Blueair 503 is a great solution for those looking to remove dust, mold, pollen, pet dander, odors or who suffer from allergies or asthma.

When purchased with the Blueair 500/600 Series SmokeStop Filter, it will also help remove light odors, light chemicals, and smoke. If you’re concerned about heavy odors, chemicals or smoke, then Blueair 603 may better suit your needs.


BlueAir 500 and 600 Series Smokestop Filter
BlueAir 500 and 600 Series Smokestop Filter
The 500/600 Series SmokeStop Filter removes tobacco smoke, ethylene oxide, odors and harmful VOCs from your home environment.

Air exchange rate is five times per hour which is really great. It comes with five-year warranty and is recommended to keep windows and doors closed for this home air purifier to work best.

This is an awesome air filter. I have one cat, and I smoke. Everyone says the house no longer smells like stale cigarettes and my niece, who is allergic to cats, no longer has to take a medic when she visits….- Buyer
There are four levels with a manual switch with no fancy lights. However, that’s just what we need for an air purifier, nothing more. The lowest one is so quiet that I can hardly hear it even I am 2 feet away, the second lowest is still very quiet and good for sleep. The strongest is not too bad either and can get air move fast….Buyer

As it name says, Blueair 503 Hepa Silent air purifier uses Hepa filter. It is not permanent filter and will need to be replaced every 6-12 months depending on use. You will know when HEPA filter needs to be replaced thanks to filter replacement indicator.

But for the price of 70$ you can buy 3 Blueair Replacement Particle Filters. I think that is not expensive. It is very easy to change the filter too.


BlueAir 500 and 600 Series Replacement Particle Filter
BlueAir 500 and 600 Series Replacement Particle Filter
Its gradient structure is made up of thermally bonded fibers, free of chemicals and binders, naturally anti-bacterial, and fiber shedding resistant.


Blueair 503 Hepa Silent Air Purifier Features

  • Max Coverage Area: 580 square feet
  • Air Exchange Rate: Five times per hour
  • CADR (Clean Air Delivery Rate): Smoke – 375; Dust – 375; Pollen – 375
  • Unit Size: 26″ high x 20″ wide x 13″ deep
  • Weight: 35 lbs
  • Power Consumption: 35 watts on low; 120 watts on high
  • Power Voltage: 115V
  • Noise Levels: 32 dB on low; 66 dB on high
  • CFM (Cubic Feet per Minute): 90 CFM on low; 414 CFM on high
  • HEPA Filter: Change every 6-12 months, depending on use
  • Metal Housing ensures no plastic vapors
  • Casters ensure easy mobility
  • Filter Replacement Indicator included
  • Energy Star Qualified
  • Blueair 503 Owner’s Manual


Quietest units in the industry: Sophisticated materials and precision engineering allow the Blueair 503 to deliver more clean air at a faster rate, with less fan noise.

Blueair’s low-density HEPASilent filters clean larger volumes of air more quietly than any other unit in the industry.

Even the housing is designed with quiet operation in mind, replacing sound-sonant plastic with noise-muffling steel, thus reducing fan noise.

Blueair 503 Hepa Silent Air Purifier

SurroundAir: Blueair’s efficient SurroundAir™ vent system delivers exceptional air exchange (over 400 cubic feet per minute) without annoying drafts (clean air is distributed out of three sides of unit).

This system works. We also have the larger 603. If you want clean air. If you have problems with any type of breathing, this is the machine for you. We plan on purchasing another one soon.Buyer

Patented HEPASilent Filter Technology: A revolutionary combination of advanced filter media and an encapsulated ion particle charging chamber makes it possible for the Blueair 503 air purification system to achieve better results than either mechanical or electrostatic technology alone.

Standard HEPA filters measure efficiency at 0.3 microns. While a typical HEPA filter removes 99.97% of particles 0.3 microns or larger, Blueair’s HEPASilent filters remove 99.97% of particles as small as 0.1 microns in size on it’s lowest fan speed.

  • Overview
  • Description
  • Brand/Store
  • Availability
  • User Rating
  • Review
  • Specification
  • CDR: Tobacco Smoke
  • CDR: Dust
  • CDR: Pollen
  • Area Coverage (sqft)
  • Noise Level Highest Speed (dB)
  • Noise Level Lowest Speed (dB)
  • Airflow at Highest Speed (CFM)
  • Number of Fan Speeds
  • Ionizer
  • UV Bulb
  • HEPA Filter
  • Filter Reset
  • Pre-Filter
  • Energy Star Verification
  • CARB Certified
  • Power Consumption (Watts)
  • Filter Monitor
  • Standby Mode
  • Auto Mode
  • Air Quality Sensor
  • Timer & Scheduler
  • Remote Control
  • Amount of Air Moved (CFM)
  • Hepa-filter-type
  • Carbon Filter
  • Dimensions (inches)
  • Weight (lbs)
  • Filters To Change
  • Recommended For
  • Other Options
  • Price


How Blueair 503 Works?

1. Air is drawn into the Blueair 503 air purifier from the bottom and sides of the unit via a four-speed fan.

The air is passed through the pre-filter where large particles are trapped, then through the electrostatic HEPA-type filter where the small particles are trapped, and then through the ionization chamber where the air mixes with negative ions.

2. Negative ions are then released with the clean air through the top and sides of the unit, to reduce air drafts and noise.

The ions collide with the particles in the room air and the particles become charged. When the air cycles back through the unit, the charged particles cling to the electrostatic filter media.


3. The combined 3-Stage filtration technologies allow the Blueair Air Purifiers to achieve 99.97% filtration efficiency, down to .01 microns.

Together, the encapsulated ion chamber and 3-Stage Filtration Process combine to create Blueair’s patented HEPASilent technology – delivering maximum airflow with less fan noise.

Easy to Use and Maintain: Plug it in, select the speed setting, and forget it. The Blueair 503 works so quietly on its lowest speed, at first, you may find yourself wondering if it’s turned on.

Just check the bright blue power-on light. Blueair filters require no weekly additives or filter washing. The grilles and powder-coated steel exterior are easy to wipe clean, and won’t pick up grime and oily stains the way plastics can.

When the filter needs to be replaced (twice yearly), just open the lid, lift out the old filters and drop the new ones in. No screws, hooks or tools and less than one minute of your time are required.


Conclusion on Blueair 503 Hepa Silent Air Purifier

The new Blueair 503 air purifier is your solution to cleaner air. If you are living with an aggravating allergy, asthma, or respiratory condition or if you simply want to create cleaner, more breathable indoor air, the Blueair 503 is for you.

With value-adding features such as multi-stage filtration, high CADR (Clean Air Delivery Rate) ratings, quiet operation, a filter change indicator, simple maintenance, and Energy Star-qualified operation, the Blueair 503 delivers top-notch results economically and efficiently.

The Blueair 503 is highly recommended by a leading consumer reporting agency.

Rigorous product testing has confirmed its great ability to remove dust, pollen, and smoke as well as its low noise level when operating in your environment.

It is great air purifier which will significantly improve the air you breathe and especially help if you suffer from allergies or asthma.

Blueair Series 500 & 600 Air Purifier Filter Change.

Blueair 503 Hepa Silent air purifier is nicely designed and looks good. It will perfectly fit in your household.

While it is not lightweight, there are wheels under it so it is easily pushed around the house. 503 Hepa Silent is also very quiet. Well, it depends on what you consider to be loud.

This Blueair home air purifier is energy star rated which is always good.

It doesn’t use a permanent filter. Hepa filter needs to be replaced every 6-12 months, but you can buy three pack replacement filter for something about 70$.

9.1 Total Score

Blueair 503 HepaSilent is great home air purifier and recommended option to buy especially if you suffer from allergies or asthma.

Coverage Area
Size and Weight
Clean Delivery Rate
Power Consumption
Noise Level
Overall Quality
User Rating: 4.67 (3 votes)
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