Blueair 503 & 603 Comparison Review

Are you trying to workout which is the right air purifier for you, the Blueair 503 or 603 model? If so, this comparison guide will be able to help you out, through providing a brief review of both models -- so you know exactly what each model has to offer you. Then a summary section at the end, highlighting the key differences between the 503 and 603 models, so you can easily decide which is the ideal air purifier for you.

Blueair 503 Overview

The 503 uses Blueair's advanced technology with which it makes its well-known air purifiers. System used in the 503 is known as HEPA Silent filtration technology.


Blueair 503 HepaSilent Air-Purification System
Amazon Price: $669.95 $659.00 Buy Now
(price as of Nov 2, 2016)

Aspects and features

The 503 can cover an area of 580 square feet and can easily provide clean air within that area. It is known to have a very good Clean Air Delivery Rate and is also certified by the Association of Home Appliance Manufacturers. The HEPA Silent Filtration technology enhances filtration of air along with an ion-particle charging chamber. This technology is far superior than mere electrostatic or mechanical technology which is used in other air purifiers in the same range.

It has a sleek design and goes well with various kinds of decor. In fact it is the recipient of the Excellent Swedish Design Award which is given to the best design in various products. The unit is very sturdy being made out of galvanized steel and has recyclable filter media. When you switch it on you will be pleasantly surprised to observe how quiet it is and you may not even realize that it is on.

Blueair units are very environment friendly and use the least harmful plastics resulting in a zero ozone production. It is Energy Star certified and has a CDAR rating of 375 for dust, pollen and smoke.

Other specifications

The unit measures 13 x 20x 26 inches and weighs 42.6 pounds. Although the unit is a bit heavy to carry you can move it easily with the help of castors at the bottom of the machine.

Blueair 603 Overview

The 603 uses the HEPA Silent filtration technology which is the most advanced manual system available in air purifiers.

Blueair 603 HepaSilent Air-Purification System
Amazon Price: $839.99 $655.69 Buy Now
(price as of Nov 2, 2016)

Aspects and features

Blueair has incorporated its famous HEPA Silent technology which has an advanced filtration system in order to ensure that the air that it cleans is absolutely purified. It also has ion-particle charging which helps in releasing negative charges that will help in a more effective filtration. It has a very high Energy Star rating and is also certified by the US Environmental Protection Agency as well as the Department of Energy.

It is one of the quietest air purifiers in the market and you will be able to make out that the system was on only by the blue light indicator. The maximum noise level is 66 dB which makes it one of the quietest air purifiers. The unit has a very stylish design and fits in very well in different kinds of decor. It has a four speed manual mode which makes it very convenient to operate.

You can carry out five air changes every hour and the machine can cover an area up to 640 square feet. It is very sturdy and durable due to its galvanized steel construction. A filter change indicator enables you to replace a filter according to the day that you accept.

Other specifications

It measures 13 x 20 x 26 inches and has a weight of 43 pounds. It may be a bit heavy to carry around but thoughtful feature are the 4 castor wheels at the bottom of the machine which makes it easy to move it around. You can also clean it easily due to its galvanized steel construction which is a good change from other air purifiers that are made of cheap plastic.

What are the Differences Between the Blueair 503 and 603?

Both the air purifiers have some of the same excellent features. The advanced filter and ion-particle charging ensures clean air and gives five charges per hour. Both have high Energy Star ratings and four speed manual modes which make it very convenient to operate. Either machine will let you know when the filter needs to be changed with the help of an indicator. Both can be used for 5 air changes per hour.

The Blueair 503 and 603 have advanced filtration that will remove pollens, dust, allergens, bacteria, viruses, mould spores and pet dander. They produce zero ozone with a high degree of environment friendliness and have fought speed control options.

However, there are a couple of differences between the two a purifiers. While the 503 has a Clean Air Delivery Rate of 375, the 603 has a higher CADR of 450. The 503 can cover an area of 580 square feet whereas the 603 can cover an area of 698 square feet.