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Coway AP-1720G True HEPA Air Purifier Review

The AP-1720G isn’t Coway’s cutest air purifier model—not by a wide margin. However, what this device lacks in looks, it more than makes up for in performance.

Coway AP-1720G True HEPA Air Purifier Review (1)

Let’s take a closer look at the AP-1720G to see whether it’s the right fit for your home.


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930-Square-Foot Coverage Capacity

According to Coway, the AP-1720G can purify the air in rooms of up to 930 square feet, making it a reliable model for spacious areas like living rooms, kitchens, hobby rooms, or entire apartments.

The great news is that in 930-square-foot rooms, it produces 2 ACH (air change per hour), so users could certainly push the AP-1720G’s limits by placing it in rooms of over 1,500 square feet without reducing purifying efficiency by much.

Coway AP-1720G Intro Video

EZ Release Pre-Filter + Max2 Filter

So, how does the AP-1720G clean indoor air? It uses a multilayered filtration system that starts with a washable pre-filter. The pre-filter’s EZ Release design lets it slide out of the purifier for quick and easy maintenance—washing and drying—before reinstalling.

The second and third air-purifying stages come in a single filter: the Max2 Filter. It consists of a Green True HEPA Filter that captures nanosized particles (as tiny as 0.01 microns) with 99.999% efficiency. Since harmful pathogens typically latch onto larger airborne contaminants, the Green True HEPA Filter has a great chance of capturing them.

Finally, the second layer of the Max2 Filter is an activated carbon filter that absorbs odor molecules, producing fresh, breathable air.

PM2.5 Pollution Sensor

Like any smart air purifier, the AP-1720G comes with a built-in particle sensor. The sensor detects the density of airborne contaminants that reveals how polluted the indoor air is using color codes (red for very unhealthy and blue for good).

If the air reaches a certain pollution density level, the AP-1720G’s motor will kick into high gear to suction and capture as many contaminants in as little time as possible. Basically, users can just plug the air purifier in, switch it to auto mode, and leave it alone until the Max2 Filter needs replacing.

App and Voice Support

The AP-1720G wouldn’t be a smart air purifier if you couldn’t control it from afar. Thankfully, you have two options to go with—using the Coway IoCare app on your smartphone, which keeps users in the loop by receiving air quality and filter statuses, or syncing the air purifier to an Alexa device to send voice commands.

These aren’t make-or-break features since you can set up the AP-1720G to run indefinitely on auto-mode, but they’re still nice to have.

Additional Features

This Coway air purifier comes with “standard” additional features. The first of which is the timer that automatically turns the AP-1720G off after a predetermined time (1/2/4/8 hours).

The second is the filter lifetime indicator, which informs users when the Max2 Filter is nearing or has reached the end of its life cycle. On average, you can squeeze about 6 months of use per Max2 Filter.

Verdict: Smart, Versatile, User-Friendly—What More Could You Want?

Don’t let the Coway AP-1720G’s super-plain-Jane appearance fool you. It’s one of the brand’s most powerful, most intelligent air purifiers that, we think, anyone would be happy to own and use. Not only does it deliver near-100% purifying efficiency, but it does it without needing anything more from you than a simple press of a button.

Coway Airmega 250S App-Enabled Smart...
  • [Coverage] Designed to clean spaces up to 930 sq. ft in 30 minutes.
  • [HyperCaptive Filtration System] Dynamic combination of a washable pre-filter, activated...

Air Recommended Air Purifiers

Our Pick Perfect for bedrooms, playrooms, and living rooms, the Coway Airmega AP-1512HH is one of the best-performing, most durable, and most economical purifiers we’ve tested.

Most Popular The Levoit Core 300 air purifier has some strong suits, but in our opinion it falls short of carving out a meaningful niche for itself. Its ideal use would be in a small bedroom occupied by someone who is sensitive to noise.

Also Great With high end air cleaning performance and a whisper quiet fan, the Winix 5500-2 is the perfect combination of power and finesse. It cleared airborne particulates out of our smokey testing room faster than any other model.

Best of the Best If you have a large space you want to remove irritants from, We recommend the Airmega 400S. All of Coway air purifiers do an excellent job of attacking indoor pollutants, and we highly recommend any of them. The 400S is designed to accommodate large room sizes.

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Last Update: 2024-02-20 | Affiliate links/Images from Amazon Product Advertising API

About the author

Hi I’m Alex, founder of HouseholdMe.com and I’d like to say thank you for dropping by. Like most of you, the first thing I look at before buying something online is reviews or buying guides. By reading what other people say will help me gauge whether or not a product is good or not.  I am trying to help people find answers, solve problems, and get inspired.

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