Best Hepa Air Purifier for Large Rooms

Best Hepa Air Purifier for Large Rooms – On this page, you’ll find everything you need to quickly make the right decision on which top rated air purifier to get for your large room. The most useful buying guide we could give you is to check the area (large room coverage) your air purifier can cover. Because if you are using a 200 sq ft air purifier for a, well, 500 sq ft space, even in the best ACH rating (Air changes per hour) your air purifier still can’t purify your room air. The outcome is the reduction of your air purifier’s filter lifetime, as well as energy wasting. We guess you understand why you need to find the most suitable air purifier for your large room thoroughly, right?

To ensure that your air purifier will work well, all you have to do is check the square footage rating of the device that you’re interested in buying. Then, compare it to the size of the room that you want to use it in. The device has a square footage rating that’s equal to (=) or greater than (>) the intended room size, then it’s a good choice. If not, DO NOT BUY THIS.

If you need a complete buying guide for your large room air purifier, for example you want to know about the technical specifications like ACH, CADR, you can read more here.


1.LEVOIT Smart Wi-Fi

Pros & Cons

I like it. It’s definitely the quietest air purifier I’ve ever owned, which makes it ideal for my bedroom. It comes in a great looking case and is super easy to use and maintain.

It doesn’t come with any advanced filtration gimmicks. Instead, it uses the same proven filtration methods that most other purifiers use.

However, it does include WiFi which effectively makes it a smart air purifier. The app is responsive and the WiFi connection is reliable. Integration with my Alexa was easy and surprisingly useful.

2.Alen BreatheSmart 75i

Pros & Cons

Alen BreatheSmart 75i is the biggest Alen BreatheSmart air purifier (achieving 2 ACH even in 1,300 sq ft large spaces). This quiet giant is not only considered to be the best Alen BreatheSmart model; according to a spec-by-spec analysis of 529 air purifiers, the Alen BreatheSmart 75i is the best overall air purifier in 2021.

With the 75i model, the question “Is Alen BreatheSmart 75i any good?” is far less relevant than the question that really matters:

3.Coway Airmega 400

Pros & Cons

The Coway Airmega 400 is an excellent choice if you or a family member has asthma, allergies, smoke, odors, and dust. With two color options, white and graphite/silver, the unit can easily fit in with any decor. It also runs quietly, meaning it won’t disturb anyone resting or interrupt your listening when watching your favorite T.V. show or program.

After reading dozens of online reviews, including Amazon, we found that most people who purchased the Coway Airmega 400 air purifier are satisfied and happy. Many customers expressed their appreciation for the unit’s ease of use, durability, quiet operation, and how it expertly eliminates harmful airborne particles. On the other hand, some customers also expressed that the unit is noisy, emits an odor, and issues with the unit itself.

4.Hathaspace Smart True

Pros & Cons

Air purifiers such as Hathasmart can be love at first sight. Translation: People love the Hathaspace air purifier’s design.

We at LearnMetrics, however, are all about the specifications. In this thorough, in-depth Hathaspace air purifier review, we’ll look at all the primary and secondary specifications to see if its tremendously high rating is justified from an HVAC standpoint as well.

5.RabbitAir MinusA2

Pros & Cons

With a top-notch air filtration process, a lovely design and a handful of great features, Rabbit Air MinusA2 was the successful attempt of this brand to capture the title of the best air purifier last year. It’s a big jump from the previous Rabbit Air BioGS 2.0 and a worthy rival with even big guns in high-range air purifier segment.

Today, we will make a Rabbit Air MinusA2 Review to see why this air purifier can secure the title of Best Air Purifier in this year.


As I have become more aware of air pollution, I was surprised to learn that it’s not just an outdoor problem. Indoor air quality can also affect our health and quality of life. When I set out to try to solve this problem using an air purifier, I was unprepared for the overwhelming amount of air purifier products and solutions that make bold claims about purifying the air in the home using a HEPA filter.

Air Purifier