Blueair 503 vs Blueair 603: Which Air Purifiers are Better?

Table of Contents

It’s been a tough year for the air quality in our homes. Between viruses and wildfires, many have found it impossible to open windows to circulate fresh air through their homes. Whether it’s bacteria, dust, odors or pollen, air purifiers can be highly effective at cleaning the air in your home.

Today we are going to look at all of the specifications of the Blueair 503 vs 603. We will compare things like their appearance, airflow, and filtration capabilities. For a quick overview, there will be a side-by-side chart and the pros and cons of each will help us to make a final decision.

The Blueair 503 and the Blueair 603 are incredibly similar. We will begin by going over what they have in common.

Blueair 503 vs Blueair 603 – Similarties

Quick Glance

The comparison chart below has a review of the Blueair 503 and the Blueair 603 side by side.

	Blueair 503	Blueair 603
Image
Size	26 x 20 x 13 inches	26 x 20 x 13 inches
Weight	35lbs	35lbs
Design	Galvanized Swedish steel housing with blue power light	Galvanized Swedish steel housing with blue power light
Room Size	580 sq. ft/5 air exchanges per hour	679 sq ft./5 air exchanges per hour
Clean Air Delivery	Smoke/dust/pollen 375 CFM	Smoke/dust/pollen 450 CFM
Air Flow Rate	414 CFM	490 CFM
Speeds	4- dial knob	4- dial knob
Timer	Not stated	Not Stated
Noise Levels	32-66dB	35-71dB
Filtration	Ion participle-charging chamber with 3 filters, compatible with Stop Smoke Filter	Ion participle-charging chamber with 3 filters, compatible with Stop Smoke Filter
HEPASilent Technology	Yes	Yes
Filter Replacement Indicator	Magnetic timer	Magnetic timer
Energy Efficiency	35-120W	35-120W
Warranty	5-year limited	Not Stated
Price	Check Price on Amazon	Check Price on Amazon

Appearance

The Blueair 503 and the Blueair 603 are exactly the same sizes. They both measure 26 x 20 x 13 inches and weigh 35 pounds. They have caster wheels on the bottom to make it easier to move around.

Design

The galvanized Swedish steel housing has won the Blueair 503 and the Blueair 603 awards. They are white with a blue power light. The only slight difference is that the Blueair 603 has an air grid on the front as well as the sides.

Speeds

There is a dial knob on the Blueair 503 and the Blueair 603. This allows you to easily change between the 4 speed settings.

Filtration

Unfiltered air passes through an ion participle-charging chamber with 3 filters. The filters can be removed by lifting the lids off and sliding them out. The 3 filters are included, and the air purifiers are compatible with Stop Smoke Filters which can capture 96% of smoke in just 2 hours.

HEPASilent Technology

HEPASilent Technology, superior to HEPA filters. The advanced filters, along with electrostatic filtration technologies. This technology enables the Blueair 503 and the Blueair 603 to capture up to 99.97% of participles as small as 0.1 microns.

Filter Indicators

The Blueair 503 and the Blueair 603 come with a magnetic timer that can be attached to the air purifier unit or any other handy location. When the filters need changing it’s easy to see. It is recommended that the filters are replaced every 6 months with original Blueair filters.

Energy Efficiency

It is advised that you run the Blueair 503 and the Blueair 603 24 hours a day. It’s natural to worry about the cost of running the air purifiers. Both are energy efficient, using between just 35W and 120W.

There are still some specifications that set the Blueair 503 and the Blueair 603 apart. We will move onto these now.

Differences Between Blueair 503 and Blueair 603

Room Size

If you choose an air purifier that is too small for your area, it will take longer to clean the air and may not run as efficiently.

Blueair 503

You can use these in rooms and spaces of up to 580 square feet. This range model will clean the air five times in one hour.

Blueair 603

It has a larger capacity for areas of up to 679 square feet and again, it will perform five air cleans per hour.

The Winner Is- A Tie

Clean Air Delivery

These air purifiers have been tested and rated by the AHAM (Association of Home Appliances Manufacturers).

Blueair 503

For smoke, dust, and pollen, the CFM, cubic feet per minute, is 375. The maximum airflow rate is 414 CFM.

Blueair 603

This air purifier has the highest clean air delivery rate (CADR) of 450 CFM. The maximum airflow rate is also higher at 490 CFM.

The Winner Is- The Blueair 603

Noise Levels

You will have no trouble running these air purifiers at night because on the lowest settings, they are whisper quiet. There isn’t a great deal of difference.

Blueair 503

The noise levels are listed at between 32 and 66dB.

Blueair 603

This is a fraction louder at 35 to 71dB.

The Winner Is- The Blueair 503

Pros and Cons

Finally, we will include some pros and cons of the Blueair 503 and the Blueair 603 before deciding which is the better buy.

Blueair 503

Pros:

It’s a real help for those with allergies
You can hardly hear it on the lowest setting
Very easy to change the filters

Cons:

Some feel the replacement filters are expensive

Check Price on Amazon

Blueair 603

Pros:

Zero ozone emissions
It does a superior job on smoke
The counter counts down the days so no easy to see when the filters need replacing

Cons:

It’s more expensive

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The Final Verdict

If you have a smaller room, the Blueair 503 is the better option. It cleans air perfectly well and there is no point in spending the extra money. For larger areas, the Blueair 603 is definitely the better buy. It’s the same size, weight and design, in fact, the pros for the Blueair 503 are the same for the Blueair 603 and the cost of filters are no more expensive. The difference is the Blueair 603 has a higher clean air delivery rate and airflow rate, which makes it the better performing air purifier.