The Rabbit Air MinusA2 Air Purifier – Is It Really As Quiet As A Whisper?

If you’ve been searching for a quiet air purifier you may perhaps have come across the MinusA2 Air Purifier by Rabbit Air.

It’s marketed by the manufacturer as being an ‘ultra quiet’ air purifier.  But in reality how does it measure up?  

Is it also suitable for asthma and allergy sufferers?  And are there any other benefits it can offer consumers over its competitors? 

In this review I’m going to take an in-depth look at the Rabbit Air MinusA2 – how it works / its key features / who I’d recommend it for / pros and cons / customer feedback – before finishing with my own independent verdict and star rating.

Short of time?  Get the answer to your most pressing question by clicking on a link in the table below, or read on for the full article.

Before we get started, and to help put the rest of the information in context, let’s take a quick look at…

How an Air Purifier Works and Who They’re Recommended For

You’d be forgiven for thinking that only allergy or asthma sufferers would benefit from using an air purifier in their homes or workplaces, but in actual fact ALL of us would.

In recent years there’s been a growing body of medical evidence which suggests that poor indoor air quality can have a detrimental effect on our health.

When we think of pollution the first thing that usually springs to mind is the air outdoors.  But would it surprise you to learn that indoor air can sometimes be up to 5 times more contaminated than it is outside?!

In a nutshell, an air purifier is an electrical device which sucks in the air inside a room.  Polluted particles contained within that air are then trapped inside filters, before clean air is blown back out of the unit.

Polluted air particles that find their way into an air purifier typically include dust mites, mold spores, bacteria, viruses, smoke, pollen and pet dander.  

Several of these are common allergens which can trigger an allergic reaction, so removing them before they can be inhaled can help to relieve or eliminate symptoms.

In response to a surge in consumers looking for a solution to the problem of poor indoor air quality, more and more manufacturers have entered the air purifier arena, leading to a greater choice for consumers.  

But too much choice can be bewildering, so it’s important before making any purchase to consider the following…

Top 5 Things to Consider BEFORE Buying an Air Purifier

  • Do you want the air purifier to remove a specific pollutant(s) – e.g. pollen or dander?
  • If so, does your preferred air purifier have sufficient filter capabilities to do this? – e.g. do you need one with a HEPA filter?  (more on this later)
  • Does it also offer adequate room coverage?  – e.g. can it sufficiently clean the air in the size of room you plan to use it in?
  • Are there any other things which are important to you? – e.g. quiet operation, ‘intelligent’ technology, ease of portability, looks etc.
  • What sort of aftercare and customer service can you expect?  Is the unit covered by a comprehensive warranty?

Let’s now examine in more detail the Rabbit Air MinusA2 air purifier and hopefully provide you with plenty of information to help you decide if it’s going to be the right fit for your own personal needs.

In a rush?  Price check the Rabbit Air Minus A2 at now

What Type of Air Filtration Does the Rabbit Air MinusA2 Air Purifier Offer?

The most important consideration in my opinion when choosing an air purifier is how well it cleans the air, and if it can effectively get rid of the things which are of particular concern or importance to you.

AllergiesFor instance, if you suffer from hayfever then pollen is the thing you want your air purifier’s filter to be able to trap. If you suffer from sneezing and wheezing fits around furry and feathered friends then you want an air purifier with a filter that can remove pet dander particles.

Polluted particles vary in size.  In order to be able to effectively capture the maximum amount of contaminants an air purifier needs to have a HEPA filter.  

That’s because this particular type of filter contains smaller holes than a regular one and is therefore able to hold onto even the microscopic of particles, rather than them being released back into the air.

To be honest, most air purifiers nowadays come with a HEPA filter.  Manufacturers have realised that it’s the main selling point for many people and I doubt you’d come across a new model nowadays without one.

But the Rabbit Air MinusA2 comes with much more than just one HEPA filter.

It actually combines 5 different filters and an (optional use) negative ion generator for enhanced allergen and germ removal plus odor control.


How the Different Filters on the Rabbit Air MinusA2 Work

(1) Pre-Filter

The job of the pre-filter is to weed out the larger polluted particles, such as dust mites, and thereby prolong the life of the other (more expensive) filters.  The pre-filter on the Rabbit Air MinusA2 is permanent and is also washable.

(2) Medium Filter

The task of the medium filter is to reduce airborne particles larger than 1 micron in size – for example mold, pet dander and pollen.

(3) BioGS HEPA Filter

The BioGS HEPA filter captures particles down to 0.3 microns in size, up to 99.97% of the time.

Rabbit Air claim their BioGS HEPA filter is superior to some other HEPA filters as it reduces the growth of bacteria and viruses on the filter, in turn prolonging the life of the filter and making sure it stays working in tip top condition.

(4) Customized Filter

A few manufacturers such as Rabbit Air and Alen now offer customers the chance to customize one of the filters inside their air purifier so they can tailor the air purification to their very own specific needs. 

This is great – IF you understand what each of the different choices do!

In the case of the Minus A2, the customizable filter options are as follows:

(a) Germ Defense Filter – traps and reduces airborne bacteria, mold spores, and particles which may carry viruses.  I imagine this filter would be a popular choice for families with children who want to try and minimise exposure to unpleasant bugs. 

(b) Pet Allergy Filter – recommended if you particularly want to remove pet dander. 

(c) Toxin Absorber Filter – best at capturing Volatile Organic Compounds (gases given off by certain household items such as cleaning products and paint) and other chemicals.  Useful for people who suffer from Multiple Chemical Sensitivity.

(d) Odor Remover Filter – recommended if you want to get rid of bad odors from pets, cooking and smoking.

 (5) Charcoal Filter

The function of a charcoal filter is to absorb unpleasant smells from the air inside your home or office.

Typically, these types of filters are coated with a thin layer of activated carbon, but in the case of the Rabbit Air MinusA2 it’s made from high-grade granular activated carbon for enhanced performance.

The Negative Ion Generator – Is It Safe and Does It Produce Ozone?

There’s sometimes a little bit of confusion or concern in respect of the use of negative ions with an air purifier.

Do they produce ozone?  Are they safe to use?  Do you HAVE to use them?

Rabbit Air describe negative ions as “odorless, tasteless and invisible molecules that are found near mountains, waterfalls and beaches”.  They help the air purifier by latching onto airborne particles, weighing them down.  

This then makes it easier for the particles to become trapped inside the air purifiers filters, or alternatively settle onto the floor where they can be vacuumed up, instead of inhaled.

The Negative Ion Generator function on the Rabbit Air MinusA2 is completely optional – you can choose to leave it switched off if you wish.

In terms of ozone emissions, Rabbit Air state that zero ozone is produced when the negative ion generator is switched off.

When the machine was operated on the lowest fan speed an amount of 0.002 parts per million was recorded.  This is 25 times LESS than the 0.05 parts per million maximum ozone concentration safety standard set out by the California Air Resource Board.

Having now examined the MinusA2’s air purification system, let’s take a look at what sort of spaces it can be used in.

What is the Room Coverage for the Rabbit Air MinusA2 Air Purifier?

Another crucial point to consider when buying an air purifier is the size of room(s) you’re going to use it in.

Please don’t be tempted to go for something recommended for a smaller area because it’s cheaper – you’ll only be wasting your money in the long run as you won’t get the air cleaning power you really need.

Room coverage is determined by the number of times an air purifier can clean the air in a room in an hour.

There are actually 2 different models in the MinusA2 range – the SPA-700A and the SPA-780A.  I’ve not mentioned the distinction before now as essentially there’s very little difference between the 2 models.  They both feature the same filtration system, have the same key features, and are the same dimensions and weight.

The areas where they do vary relate to noise levels, color choice, cost and room coverage.

2 air changes per hour are considered sufficient for normal residential use, and in this respect the SPA-700A can cover an area up to 700 square feet, and the SPA-780A an area of 815 square feet.  This should cover most average-sized living rooms, bedrooms etc.

However, for allergy and asthma sufferers a minimum of 4 air changes per hour are recommended, thereby reducing the room coverage to 350 sq. ft and 408 sq. ft respectively.


Certified Asthma and Allergy Friendly by the AAFA

In spite of the reduced capacity levels mentioned above, the Rabbit Air MinusA2 Air Purifier is still a great choice for allergy and asthma sufferers, provided it’s not used in too large a space.

In actual fact, it’s been certified ‘Asthma and Allergy Friendly’ by the Asthma and Allergy Foundation of America.

This award is only given out to air cleaning products which have scientifically demonstrated their contribution to the reduction of allergens, and which are considered the best products in their class for people who suffer from allergy and asthma.

Now that we’ve checked out room coverage, let’s explore another factor which is very important to many people when choosing an air purifier – noise.

How Quiet is the Rabbit Air MinusA2 Air Purifier?

At the start of this article I posed the question of whether this one of the quietest air purifiers around.

Well, it certainly seems to be.

The MinusA2 air purifier has 5 different fan speeds. Generally, if you need extra air cleaning power you’d operate the unit at one of the higher settings, switching down to a lower speed once the air was suitably refreshed.

Rabbit Air boast ‘whisper quiet operation’ and state that on the lowest fan speed noise is virtually undetectable, a claim that certainly appears to be backed up by many customer testimonials online. 

But noise can of course be very subjective.  What’s quiet to one person may be a distraction to another, so it’s useful to have some benchmarks to compare against.

Given that a whisper registers at approximately 30 decibels (dB), a library environment 40dB and a normal conversation 60dB, here’s how the 2 different models in the MinusA2 range shape up:


Fan speed 1 – 20.8dB / Fan speed 2 – 24.6dB / Fan speed 3 – 31.3dB / Fan speed 4 – 39.2dB /Fan speed 5 – 45.6dB


Fan speed 1 – 25.6d / Fan speed 2 – 31.1dB / Fan speed 3 – 37.4dB / Fan speed 4 – 44.5dB / Fan speed 5 – 51.3dB

As you can see the SPA-700A is the quieter of the 2 models, and even on the very highest setting the noise generated is only marginally more than you’d find in a library environment.  

With the SPA-780A version the noise level on its highest setting is still considered to be less than the volume produced by a regular conversation.  

So it looks like the Rabbit Air MinusA2 is indeed a great choice if a quiet air purifier is high on your list of priorities.

Let’s now see what other key features it has to offer consumers.

Auto Air Quality Monitoring

The latest generation of air purifiers are now generally equipped with sensors which automatically detect how polluted the air inside a room is and then adjust themselves accordingly.

The Rabbit Air MinusA2 features one of these air quality sensors and automatically increases the fan speed whenever it detects polluted particles or odors in the air.

Once the air has been sufficiently cleaned and the sensor detects a reduction in pollutants, the machine will revert back to its original speed.

Although not essential, I think this is still quite a handy feature.  Sometimes we’ll be busy dashing about and won’t have the time to stop and consider how the air feels inside a room and may end up running our machine on the highest setting when it’s not really necessary. 

The sensor can help to save money on your energy costs and consumption, though do bear in mind that it reverts to the setting it was at originally.  So if you start off with one of the higher fan speeds you may still be running it at an unnecessarily high speed.  

Personally, I’d recommend you keep the unit running on low most of the time, and then the sensor will give it a little turbo boost as and when required.


Light Sensing Sleep Mode

This is a clever little feature which is useful if you plan to use your air purifier in your bedroom at night-time.

A light sensor will detect when the room becomes dark and will then dim the lights on the unit to minimise any disturbance to your sleep.  A more active mode is resumed again once light levels increase.

Soft, Multi-Color Mood Light

On the subject of lights, the Rabbit Air MinusA2 also has a mood light located on the front panel on the unit.

When you switch it on the panel will become illuminated with a spectrum of different colors – perfect for creating a calm environment and helping you to relax and unwind after a busy day.

Child-Proof Safety Design

We all know how inquisitive little people can be!   

One of my daughters was especially curious when she was younger and had to be man-marked continually for about a year to prevent her from climbing, eating and dismantling everything in sight!

The child-proof safety design of the MinusA2 air purifier ensures that the unit will pause operation should any little fingers attempt to open the front panel while it’s switched on.

Filter Life Indicator

Again, this is another feature which is commonly found on newer air purifiers, but useful nonetheless as it removes the guesswork as to when your filters need to be replaced.

Regarding filter changes – Rabbit Air anticipate that the filters with this particular air purifier can last up to 2 years when used for 12 hours a day.  This is in comparison to other competitors whose filters have an average lifespan of about a year.

Obviously, if you run your machine for more than 12 hours a day then you may find you need to replace your filters at more regular intervals, and indeed some customers online have mentioned this.  

How long your filter works effectively for may also be impacted by where you live.  For example, if you live in the middle of a large, busy city where pollution levels are high you may find you need to replace your filters earlier than someone who lives in a less polluted area.

How Much Do Replacement Filters for the Rabbit MinusA2 Cost?

At the time of writing the cost for a replacement filter pack for the Rabbit Air MinusA2 was in the region of $85.  

Assuming the filters last for a lower-end average of 18 months that works out at roughly $0.16 a day, so it’s a pretty reasonable price to pay for fresh, uncontaminated air in my opinion.

Running costs are also kept low as the MinusA2 is Energy Star rated, meaning it operates 40% more efficiently than units without this accreditation.

Let’s move now to the feature I’m really excited about…

The Artist Series Panels on the Rabbit Air MinusA2 Air Purifier

I have to say from the start – I LOVE the design panel options offered with the Rabbit Air Minus A2 and would even go so far as to say it’s my favorite air purifier to date in terms of looks.

The first generation of air purifiers tended to be a bit on the bulky side, with little emphasis on aesthetics. Nowadays manufacturers are cottoning on to the fact that consumers are looking for air purifiers that combine both functionality AND style.  Alen, for example, offer a choice of 14 different colors and textures with its new BreatheSmart FLEX model.

Instead of a boring, bland unit that is either nondescript or sticks out like a sore thumb, the Rabbit Air MinusA2 deserves to be shown off!

The panels on the ‘Artist Series’ feature images by Gustav Klimpt and Katsushika Hokusai, in addition to a number of original designs by Rabbit Air’s creative team.

There are 10 different panel options to choose from at the time of writing:

  • Almond Blossom
  • Cherry Blossom
  • Plum Park
  • Starry Night
  • Sunflowers
  • The Great Wave
  • Water Lilies
  • Hug / VIP / Great Escape – 3  different images featuring the Snoopy and Woodstock characters

The other thing I love about this unit is that in addition to being a regular floor-standing air purifier it can also be mounted on a wall.  I’ve not yet come across another air purifier which has this very cool feature!

This really allows you to make a design feature of the purifier – at first glance it may look like you’ve got an expensive piece of artwork hanging from your wall!  It also allows you to free up floor space.

Of course, you don’t need to choose one of the artist panels and can opt for a plain unit.  The SPA-700A version is available in white, while the SPA-780A model comes in white and black.

Air is drawn in through the filters 360 degrees around the front panel, while clean air is expelled from the back of the unit in an upwards direction.

A remote control allows you to operate the unit from the comfort of your sofa or bed, or you can operate it manually – the control buttons are located down the left hand side of the machine.

What Are the Dimensions and Weight of the Rabbit Air MinusA2 Air Purifier?

Both the SPA-700A and the SPA-780A weigh in at 19.4 pounds and dimension-wise measure (in inches) 20 H x 21.4 W x 7.0 D.

There’s a removable stand at the bottom of the unit if you prefer to have it freestanding as opposed to wall hung, but it doesn’t come with castors so bear that in mind if you plan to move it from room to room.

Ok, let’s drill down now to the nitty-gritty!…

How Much Does the Rabbit Air MinusA2 Air Purifier Cost?

I’d love to be able to tell you that you can have the enhanced filtration system, ‘whisper-quiet’ technology and cool artist design panels for an absolute bargain-basement price, but unfortunately that’s not the case.

As with most things in life you get what you pay for and that’s the case here.  

At the time of writing the Rabbit Air MinusA2 SPA-700A model is retailing in the region of $499.95 for a plain white unit, and from $519.95 for a unit with one of the artist design panels.

The SPA-780A version starts at $599.95 for a plain black/white unit, and from $619.95 for a designer panel option.

What Kind of Warranty Do You Get With the Rabbit Air MinusA2?

Unlike some other air purifier manufacturers who only offer a 2 or 3 year warranty, Rabbit Air guarantee their products for 5 YEARS against all defects in materials and workmanship.

Customers also benefit from 24/7 customer care should they have any queries, questions or concerns about their purchase.

You can of course find air purifiers from a few hundred dollars but it all comes down to whether they can actually do what you need them to.  

Cheaper models may not have HEPA filters, or they may have HEPA filters but not the extra filtration and odor removal capabilities.  

They might also be noisy in operation, or bulky in looks, or not able to handle the room capacity.  It really all depends on your own specific needs and preferences.

Let’s take a look now at what customers who’ve bought the Rabbit Air MinusA2 have to say about their purchase, before rounding off with my own verdict and rating.

Customer Feedback for the Rabbit Air MinusA2 Air Purifier

Here’s a small selection of the most recent comments from customers online:

“This product has changed our lives”

“So attractive, so quiet…in auto mode I don’t hear anything”

“Excellent air purifier…well worth the money”

Love this machine…it has made a difference in keeping my coughing with my allergies and asthma at night much, much less” 

“Pricey but worth it” 

“The turbo and high speeds might be a little loud if you need to sleep in a quiet environment…does look stylish but a little heavier than I thought” 

“…think the product does an okay job at removing odors but by no means exceeds my expectations” 

My Pros, Cons and Final Verdict 

What I really like about the Rabbit Air MinusA2 Air Purifier: 

 5 different filters for enhanced air purification and odor removal, and the ability to customize

✓  ‘Whisper-Quiet’ technology – extremely quiet air purifier, especially when used on lower settings

✓  Extended filter life of up to 2 years and Energy Star rated – more economical than some competitors  

✓  Ultra-stylish design and the ability to wall mount

✓  Intelligent automatic air quality sensor and light sensing sleep mode

✓  Certified ‘Asthma and Allergy Friendly’ by the Asthma and Allergy Foundation of America

✓  5 year warranty, backed up by 24/7 customer aftercare service

On the other side of the coin…

✗  A little on the pricey side (e.g. approx $80 more than the relatively comparable Alen BreatheSmart FLEX)

Room coverage reduced if used specifically for asthma and allergy control

No castors so moving it between rooms may be an issue for some people


✰ Overall I give this product a very impressive 4.7 out of 5 stars! ✰

I really hope you’ve found this review of the Rabbit Air MinusA2 Air Purifier helpful in answering any questions you may have had about this product.

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