Comparison Chart: Winix U300 vs 5500-2

Let’s start with this comparison chart. As you scroll down, you should easily see the differences.

Winix Air Purifier
Model Check Price » Winix 5500-2 Check Price » Winix U300
User Manual Winix 5500-2 Winix U300
Digital Control Panel ✅ ✅
Remote Control ✅ ✅
Cradle ✅ ✅
Fan Speeds 4 4
Power Voltage AC120V/60Hz AC120V/60Hz
Power Rate 70W 60W
Room Area Served 360 sq. ft. 300 sq. ft.
Dimensions 14.9 in x 7.8 in x 23.6 in 8.66 in x 21.65 x in 16.30
Weight 17.6 lbs 13.95 lbs
Filtration Stages 3 Stages 5 Stages
Pre-Filter ✅ ✅ – washable, anti-bacterial
Washable Advanced Odor Control (AOC) ✅ ✅
True HEPA Filter ✅ ✅
Cleancel Anti-Microbial Filter Protection ❌ ✅
PlasmaWave ✅ ✅
Dust 243 197
Pollen 246 214
Smoke 232 197
Sensors and Indicators
Odor Sensor ✅ ❌
Timer Indicator ✅ ❌
Light Sensor ✅ ✅
PlasmaWave Indicator ✅ ✅
Fan Speed Indicator ✅ ✅
Change Filter Indicator ✅ ✅
Air Quality Indicator ✅ ✅
Buttons and Modes
Auto Mode ✅ ✅
Sleep Mode ✅ ✅
Manual Mode ✅ ✅
Turbo Mode ✅ ✅
Reset Button ✅ ✅

Key Differences: Winix U300 vs 5500-2

Here’s a list of these Winix air purifiers’ differences.

Room Area Served

According to their respective user manuals, the Winix U300 serves a smaller area than the Winix 5500-2. To compare the numbers, the U300 is ideal for a 300-square-ft. area, and the Winix 5500-2 is for a 360-square-ft. area.


The Winix 5500-2 is the heavier model, weighing 17.6 lbs. The Winix U300, on the other hand, weighs 13.95 lbs.

Filters and Filtration System

This is the most important difference between the Winix U300 and the Winix 5500-2. The U300 employs a 5-stage filtration system while the 5500-2 has 3 stages.

The filters are also different. While both Winix models are equipped with a washable advanced odor control (AOC) carbon filter and a True HEPA filter, the 5500-2 doesn’t have a Cleancel Anti-Microbial Filter Protection and a washable, anti-bacterial pre-filter.


What is CADR? CADR stands for Clean Air Delivery Rate. According to online source, this is a gauge of how well an air purifier cleans the air measured in cubic feet per minute. The higher the value, the faster the air purifier does its job.

Now, going back to the chart, it’s clear that the Winix 5500-2 cleans faster than the U300.

Sensors and Indicators

The 5500-2 has an Odor Sensor and a Timer Indicator, two functions that you can’t see in the U300.

Also read: Winix 5500-2 vs C535: Full Comparison Report

Which One to Buy: Winix U300 vs 5500-2

Based on what we presented above, which of these Winix should you buy? Here’s our answer.

Get the Winix 5500-2. It cleans pollutants faster, it covers more area, and it has more sensors than the U300.

Where to Buy: Winix 5500-2 and C535

Check Price » Winix 5500-2 Check Price » Winix U300