Alen BreatheSmart 75i VS. AIRMEGA 300S

This device uses a True HEPA filter to capture and reduce up to 99.97 percent of particles in air including; pollen, pollutants and other allergens.

Its equipped with a Timer and Scheduler that will allow you to set it to operate for 1,2,4 or 8 hours before automatically shutting off.

Its designed to clean air in rooms with sizes of up-to 1,256Sq.Ft thus making it a perfect appliance for use in large-rooms like; living-areas and bedrooms.

It combines Green True-HEPA filter technology with an activated-carbon filter to remove 99.97 percent of cigarette-odor and other volatile organic compounds (VOCs) from your home.

It purifies air in rooms with coverage of 1256-square-foot & open-areas on either side allow for a good flow of air to the filters.

It uses a True HEPA filter that captures and reduces up to 99.97% of germs and other allergens within your home environment.

It uses a pre-filter to capture large dust particles and a True HEPA filter to reduce on any dust-mites that may have escaped the pre-filter.

It uses a combined activated-carbon and True HEPA filter to capture and eliminate up to 99.97% of pet-dander from your home.

It also helps to trap and eliminate up-to 99.97% of pollen using a combined activated carbon and a True HEPA filter.

An activated-carbon and a True-HEPA filter can help capture up-to 99.97% smoke including; kitchen-smoke, cigarette-smoke and other fumes within your home.

It uses a True HEPA filter that reduces up to 99.97 percent of mold and other particles as small as 0.3-microns.

It traps and captures 99.97% of allergens and other pollutants as small as 0.3-microns using a True HEPA filter.

This unit uses an Ultra-quiet, Powerful Dual Suction system that ensures optimum air-purification results but with optimum silence.

It features a washable, easy-to-clean pre-filter that captures large particles. So, this pre-filter should be cleaned basing on how much air it has processed.

Both the pre-filter and the combined activated carbon and a True HEPA filters can be easily replaced without needing any technical help.

It uses a Smart-Mode feature to automatically adapt to its surroundings by adjusting fan-speeds basing on the room’s air quality.

It features sleep-mode that automatically turn-on to ensure silent-operation but with optimum-performance making it perfect for use in rooms that require optimum-silence.

This unit uses 66-watts at the highest speed-setting and lower-wattage at the lowest speed-setting which makes it very energy-efficient.

All Airmega air-purifiers meet EPA ENERGY-STAR ratings. In fact, this unit will turn-off to conserve energy if it detects great air-quality within any room environment.

It control-panel is located at the top with a power-button coupled a series of LED-indicators. It also features an Auto-mode, Sleep-mode, Smart-mode, Eco-mode and 4 fan-speeds.

The air filter indicator tells you when the two Max2-filters need to be replaced & when the pre-filters need to be cleaned for maximum efficiency.

If the air-quality level remains good for 10-minutes, this device will automatically turn-off to conserve energy. Additionally, it only uses 66-watts at the highest speed-setting.

This unit is a great way to ensure good air-quality if you have special needs like; asthma and other allergies.

It also works with Amazon Alexa for remote voice-control while at home.

It uses the Coway-IoCare mobile-app to facilitate for remote-control via your Smartphone. Additionally, this App is compatible with iOS and android devices.

The Max2 filters should be replaced after 12-months of daily usage while the pre-filters can be cleaned and reinstalled to ensure optimum performance.

It features a manual-mode that works along with a child lock option to ensure optimum-safety.

This device is ozone-free and will even send you reading for ozone if there are ozone-pollutants within your home.

It features a contemporary, tower, box-shape that is space-saving coupled with 4 black-feet and a shiny white plastic body with controls at the top.

It has dimensions of; 21.2"H x 13.6"W x 13.6"D for a space-saving design coupled with a white-plastic-body with controls on top and 4 black-feet at the bottom.

It weighs about 21.4-lbs which makes it a bit heavy but can be moved around different rooms within your home.