Honeywell HFD 120Q VS. AIRMEGA 400s HEPA Air Purifier

Uses a True HEPA air filtration system to remove 99.97% of air contaminants. Its Max2 filter is a combination of activated carbon & True HEPA filter

Has a Timer and Scheduler. You can use Coway mobile application to program the purifier. Airmega will always remember the settings on the mobile app

Room coverage is 1560 sq.ft. It is the best for large rooms. It will also clean air in other rooms including the kitchen.

Can get rid of all strong odors including cigarette smoke & smell. This unit is designed to keep your indoor air cleaner.

Covers a room size of up to 1560 Sq.ft. So any room size within that rage can be covered.

It combines Max2 filter, True HEPA filter and carbon filter to trap and eliminate germs.

Eliminates dust mites. Dust mites can hide in carpets where most of the dirt is found.

It gets rid of pet dander easily - thus improve the relationship between you and your pet.

Is smart enough to detect and remove pollen.When you breathe in pollen-heavy air, you may get reactions such as; Sneezing, Nasal congestion and Runny nose.

Removes any type of smoke from the house thus make the air cleaner and safer to breathe. The smoke could be from the kitchen or cigarette

Captures and removes mold. Mold is a form of fungus - Being exposed to a moldy environment can cause health issues such as: Nasal stuffiness, eye irritation..etc

The combination of Max2 True HEPA Filter with a carbon filter ensures that 99.97% of allergens and germs are removed from the air.

Operates quietly yet effectively. Its Minimum noise level is 22 dB while its Maximum noise level is 55 dB.

Pre-filters can be washed once they get dirty. You will see the alert for cleaning pre-filters.

Open the device on the sides; remove that Max2 Air Filter once it requires replacement – then close the machine

Is very smart and sensitive to air contaminants. When in sleep mode, the sensors will be on guard waiting for any pollutants.

Has an automatic sleep mode feature which detects clean air in the room - thus put the device to a sleep mode.

Uses 64 watts, however when it’s on standby, it consumes 0.2 watts (so your power bills won't skyrocket). Source:- Energystar.gov;

Is energy star certified.

Comes with various controls and modes that determine its functionality. It features AUTO mode, ECO mode and a SLEEP mode which is fully automatic.

Connect the unit with your phone using Coway Mobile Application - It will always send filter replacement reminders to your phone

It is energy star certified - you won't burn money on power bills even when the unit operates 24hrs/7 days a week.

It removes 99.97% of air pollutants. You won’t find any use for steam inhalers any more once you have AirMega in your house.

Can be controlled with Alexa Voice Control Device. However, if you don’t have Alexa, download the Coway Mobile app to enable you gain control with a Smartphone

Can be controlled with Coway mobile app which is available for both ios & Android smart phones

The life span of Airmega's filter is 12 months . However the life span of Max2 filter is highly determined on how often you use the unit.

Comes with various controls and modes that determine its functionality. It features AUTO mode, ECO mode and a SLEEP mode which is fully automatic.

Compact and premium design – it will fit in a small space within your room.

14.8 X 14.8 X 22.8 Inches

24.7 pounds