Air Shield UV Air Purifier VS. Winix U450 Air Purifier

It features a High-Performance HEPA Filter that is tested to effectively capture 99.97% of airborne-particles and as small as 0.3 microns.

This device features a timer-function that will allow you to select the number of hours you want it to operate before shutting-off.

It designed for use in medium-to-large room sizes of up-to 800-Square-Foot. This actually makes it perfect for use in huge living-rooms and bedrooms.

An Activated Carbon Filter will help to absorb cigarette-odor and other hazardous chemical fumes within your home.

It can clean air within medium-to-large rooms of up-to 865sq.ft. It also features a redesigned-front-cover that increases airflow coupled with an air-volume of 106cfm at the highest-fan-setting.

It uses Ultraviolet (UV) Light Irradiation to break down the molecular structure of airborne-germs. The HEPA Filter also helps to eliminate some harmful airborne-germs

It uses a HEPA-Filter and Dual Photo Catalyst Nano-TiO2 Germicidal Sanitizers to suppress the growth of harmful microorganisms including dust-mites.

Uses Washable Electrostatic Dust Collector Plates to trap and eliminate pet dander and other harmful airborne particles and pollutants.

It can remove 99.97% of pollen using an integrated HEPA-Filter and Washable Electrostatic Dust Collector Plates.

It uses Washable Electrostatic Dust Collector Plates coupled with Anion Continuous Negative Ion Generation Technology to remove smoke from your home.

This unit uses Dual Photo Catalyst Nano-TiO2 Germicidal Sanitizers to suppress the growth of harmful microorganisms including mold and other household fungus.

It uses a HEPA-Filter and Ultraviolet (UV) Light Irradiation technology to eliminate 99.97% of allergens and airborne germs

It is very quiet and does a great job of cleaning air. In fact, it features a quiet-mode that facilitates for silent-operation at only 20dbs.

It has a washable Pre-Filter that removes large airborne particles to extend life of other filters. It also features Washable Electrostatic Dust Collector Plates.

It features easy-to-replace filters that can be accessed by removing the front-panel. In fact, you just need simple tools to replace the filters.

It features an Auto-mode that works along with Air Pollution Sensors to monitor indoor pollution and then adjusts system performance to maximize air-cleansing.

It features a sleep/quiet-mode that ensures optimum-silence with only 20dbs of sound while providing optimum-performance. This makes the device perfect for use in bedrooms.

It uses only 80-watts on the highest fan-setting and a lesser wattage on the lowest fan-setting. This makes it very energy efficient and effective.

It’s very energy-efficient because it uses only 80-watts at the highest fan-setting.

It feature touch-button-controls located at the top-front section. It also features several modes which include; 4 fan-speeds, Auto-mode, Timer, Power and other modes, sensors and LED-indicators.

It features Diagnostic Sensors that work along with LED-lights to alert you when it’s time to replace filters, UV-light or clean the collector grid.

Its very economical because it consumes less-energy of about 80-watts at the highest fan-setting and even lesser-power when running on the lowest fan-setting.

It’s very affordable considering its 9-Stage Advanced System and wide coverage area of 800sq.ft. In fact, it works better than most advanced air-purifier-brands on the market today.

This unit is a must have for people suffering from asthma and other allergies because it features an 9-stage filtration-system that will eliminate all airborne pollutants.

The HEPA-Filter, ultraviolet-light-bulb, Activated Carbon Filter and Germicidal Sanitizers can be replaced after 12-months of constant-usage. The Pre-filter and Electrostatic Dust Collector Plates are washable.

This device uses UV-Light and other advanced-technologies to safely clean your room air without producing ozone-contaminants. This actually makes it ozone-free and environmentally friendly.

It features a classic, tower-shape with a nice-looking black-body with a stand and built-in handle for easy movement.

It features dimensions of 12 x 12 x 24 inches coupled with a durable tower-shaped body made of ABS-plastic coupled with control at the top-front section.

It weighs about 23-pounds which makes it a bit easy to carry and move from one room to another.