GermGuardian AC5900WCA VS. KOIOS Large Air Purifier

Features a True HEPA-Filter that eliminates 99.97% of allergens and other airborne-contaminants as small as 0.3-microns.

It also features a programmable-timer that can be set for 1, 2, 4 or 8 hours before the unit shuts down.

Uses a Carbon-filter to trap and eliminate cigarette-odor and other household-odors from pets and cooking.

Designed for use in small-to-medium sized rooms of up-to 338Sq.ft. Additionally, this device can filter and circulate room-air for over 4X per-hour.

Uses UV-C light technology with Titanium-Dioxide to eliminate airborne germs, bacteria and viruses.

Its True HEPA filter eliminates 99.97% of dust-mites while the integrated Pre-filter helps to capture large dust-particles within air.

Uses a True HEPA Filter to capture 99.97% of pet-dander and other airborne-pollutants down to 0.3-microns.

The True HEPA Filter helps to destroy 99.97% of pollen and other airborne-allergens down to 0.3-microns.

Its Carbon-filter can eliminate cigarette and cooking smoke. This filter can also remove common household odors so as to provide you with fresh air.

Uses a HEPA-Filter and UV-C light technology with Titanium-Dioxide to eliminate 99.97% of mold-spores.

The integrated True HEPA Filter can destroy 99.97% of allergens and other airborne-pollutants as small as 0.3-microns.

It features 3-speeds whereby the low-speed (speed-1) provides ultra-quiet operation making this unit perfect for use in areas that require optimum silence.

To change its filters, you just need to take-off the front-panel by pushing on a clip and then pull to reveal the filters.

It features an ultra-quiet sleep mode that runs on lowest speed setting (speed-1) thus making this device perfect for use in bedrooms.

Uses about 65-watts on the highest speed-setting and less than 8-watts at the lowest speed.

It has an energy star rating for low power-consumption even when running on the highest speed-setting.

The control-panel features several digital controls which include; fan-speed, UV-C on/off button, filter-replacement-indicator, Timer & a Power-button.

Has a filter-change-indicator that will blink red to alert you that it’s time to replace the filters.

It’s very economical because it consumes less power and even features a timer-option that help in the energy-saving process.

This unit is affordable but equipped with some of the best technologies in air-purification.

It uses a True HEPA filter & UV-C Technology to reduce on exposure to indoor asthma triggers.

All its filters need to be replaced every 6-to-8 months depending on the use of the product.

Doesn't emit harmful- ozone because it UV-C technology converts it back to oxygen.

It has a portable, speaker-like tower design with a display-control-panel at the top, air-inlets at the back and air-outlets on the sides coupled with a stand at the bottom and a carrying-handle.

Has a dimension of: 9.6"W x 16"L x 21"H coupled with a compact, black tower-shaped body made of durable ABS-plastic with a carrying-handle and stand.

13-pounds and this makes it lightweight and easy to transport.