Holmes HAP9240-NWU Air Purifier: Trusted Review & Specs

Now back to the old realm of Holmes air purifiers, as they are the most popular brand with the so-called desktop air purifiers. The Holmes HAP9240-NWU and Holmes HAP242-NUC are these things. In our today Holmes HAP9240-NWU Review, let’s together check one of the top picked air purifiers at the moment.

The air purifier seems to be discontinued, so we recommend you to check the review of Holmes HAP8650B instead. Or if you need a desktop air purifier, you can search for the Holmes Desktop Air Purifier.

Holmes HAP9240-NWU ranks D+ in our air purifier ranking list. We give the biggest and most thorough database of air purifier reviews in the world.

UPDATE: As the Holmes HAP9240-NWU appears to be fully sold out, I recommend properly checking our deal before reading this review, as the review itself is pretty lengthy.

In Breathe Quality, we have reviewed all air purifiers under these sections. Also, we guarantee that:

  • We do give honest reviews (both pros and cons) so anyone will guarantee to have the wisest choices.
  • We do not (and never) exaggerate one product just to let you click the links and buy that product blindly.


holmes hap9240-nwu review

  • Extremely low-price
  • Good customer service

  • No True HEPA filter
  • Low performance
  • Cheap build
  • Discontinued

Holmes has been in the world of air purifier of the United States for more than 35 years, under the name of The Holmes Group. Now, being acquired by the Jarden Corporation, this brand has a chance to improve their air purifiers to a next level. Today, in this Holmes HAP9240-NWU Review, we will find out about one well-known desktop air purifier.

Other Holmes’s Air Purifier Reviews:

Holmes HAP9240-NWU Price

Now, you must get used to the term of “desktop air purifiers”, right? When you’re looking for something cheap and cheerful, but also reliable and simple to use, the desktop air purifiers will come to your mind.

Most of the time, the desktop air purifier has a common shape: it’s short and small, with a bottom-to-top air flow system concept. Holmes HAP9240-NWU is that popular style of desktop air purifier, which is copied and pasted into even big brand like the new Honeywell HPA020B or Honeywell HHT270W.

Together with the Holmes HAP242-NUC, the Holmes HAP9240-NWU is an important device of The Holmes Group. It has 299 customer reviews on Amazon right now, rated 4/5, and you could believe in an air purifier that doesn’t cost you the earth. Yes, the Holmes HAP9240-NWU’s official price is only $39. Put the cheap Holmes HAP116Z-U aside, this is easily the best budget air purifier of this company.

It’s really hard to find such a cheap item, because even the GermGuardian AC4100 and Honeywell HHT270W is at least $50 even without a True HEPA filter. To have the more popular ones like Levoit Vista 200 or PureZone Halo, you will need to pay at least $89. So in terms of price, the Holmes HAP9240-NWU is a real killer.

Top Holmes HAP9240-NWU deals right now

Holmes small room 3-speed HEPA air purifier with quiet operation, White.

Great HEPA-type air filter, with optional ionizer. Dual positioning and compact design to use. Comes with a 3-year limited warranty from Holmes.

Related post: Best air purifier 2023.

Holmes HAP9240-NWU Design and Size

From the appearance, we can see the difference between this Holmes HAP9240-NWU and the older Holmes HAP242-NUC. The Holmes Group has always tried to made a decent job of being all things to all people, for that matter. Holmes HAP9240-NWU is not a breakthrough, but it is not another common compact desktop air purifier.

This air purifier features a dual-position design that can be used vertically or horizontally on a desk, and thus minimizing space and tabletop clutter. The air grills are stylish quite like the Honeywell HHT270W, which makes you mistake with a real desktop audio speaker.

There is only one manual knob on top of this air purifier, alongside with two functional buttons.

Finally, the Holmes HAP9240-NWU is still a compact air purifier, its height is only 6 inches, and the width is 13 inches. This air purifier only weighs 6 lbs, and you can easily move it around your home.

Related post: Best air purifiers for bedroom.

Holmes HAP9240-NWU Filters

To decide the performance of one air purifier, you will need to know about the quantity and quality of its air filters, as well as the air filter types are used. The Holmes HAP9240-NWU has the 2-stage air cleaning system as below.

  1. HEPA-type filter – It is not a True HEPA filter, and the quality is much inferior. But the air filter from Holmes HAP9240-NWU is said to clean 99% of any particles down to 2 microns in size.
  2. Ionizer – The technology of ionizing air purification from Holmes, which complies the standard safety of CARB completely.

In the same test as the previous Holmes air purifiers, I put the Holmes HAP9240-NWU in a room of 100 square feet, and let it run in 1 hour. The result, this air purifier only had the efficiency of 78% to trap any particles down to 0.3 microns. It is normal for a cheap air purifier to do such difficult task, right?

Holmes HAP9240-NWU review

The HEPA-type filter of this Holmes HAP9240-NWU needs to be replaced after 6 months, with a cost from $12 – $17.

Related post: Best air purifiers for allergies.

Holmes HAP9240-NWU Room Coverage

As a desktop air purifier, the Holmes HAP9240-NWU can only be used for a room of 110 square feet.

The ACH of Holmes HAP9240-NWU is 2X. This air purifier can clean your room in every 30 minutes.

The CADR of Holmes HAP9240-NWU is 72 cfm in general. It is reasonable for a compact air purifier to have low CADR rating.

Related post: Best large room air purifiers.

Holmes HAP9240-NWU Sound

The Holmes HAP9240-NWU is just a compact air purifier, and it’s clear that this is an air purifier meant for those who want an emphasis on quiet operation rather than technology. Keeping the noise level at only 40 decibels (db) for the lowest setting, the Holmes HAP9240-NWU is as silent as a library.

Though the noise level of this device is still higher than the standard of modern air purifiers, we can conclude it is good enough to use without distracting the user.

Related post: Best air purifiers for baby.

Holmes HAP9240-NWU Power Consumption

One of our most FAQs is “Do air purifiers use a lot of energy?” In fact, air purifier must be used for a long time to be efficient. And power consumption is one important criteria to review how much energy this air purifier will consume.

The power consumption of this Holmes HAP9240-NWU is only 35 watts, which gives peace in mind of many people who are worrying about saving the energy bill.

For running the Holmes HAP9240-NWU 8 hours per day, you only need to pay $13 each year.

Related post: Best air purifiers for pets.

Holmes HAP9240-NWU Additional Features

Time to end the review of this Holmes HAP9240-NWU, because just like any other Holmes air purifier, the device comes with nothing for additional features. This time, it is totally nothing, not even the indicator for filter replacement.

But you should remember, this is only a $39 desktop air purifier. And the key feature of this device is the ease of use, and without any complex features perhaps is a good thing.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

Holmes HAP9240-NWU Customer Service

Even being acquired for more than 10 years, the Holmes products are still one of the most popular electric appliances today. Then the reason can only be their impressive customer service. If you need to contact them, you can easily do so by filling in the information at their Contact page, or calling them via phone at 800-546-5637.

Once you make an order, you will get your Holmes air purifier with a promotion of Free Shipping over $50. However, the promotion is only applied at the time of writing, so if you can’t find the Free Shipping option, you should choose to buy from Amazon. The most wonderful thing is, after your purchase, or any reason you are not completely satisfied with the Holmes air purifier, you can return your item within 30 days of receipt for an exchange or refund of the purchase price. Great, isn’t it?

And don’t worry about your air purifier, it will be backed up by a great 5-year warranty from The Holmes Group. This is also the best warranty for an air purifier brand that only targets low-range segment.

Top Holmes HAP9240-NWU deals right now

Holmes small room 3-speed HEPA air purifier with quiet operation, White.

Great HEPA-type air filter, with optional ionizer. Dual positioning and compact design to use. Comes with a 3-year limited warranty from Holmes.

Our verdict

Its performance is low, and its overall ranking is D+, so we can’t recommend this air purifier. Also, it’s discontinued.

Holmes HAP9240-NWU Air Purifier: Trusted Review in 2024
Holmes HAP9240-NWU Air Purifier: Trusted Review & Specs

Holmes HAP9240-NWU Reviews and Specs (Air Purifier Trusted Reviews in 2024). ✓ Cleaning Power: HEPA-type filter + ionizer ✓ Value: 2.2/5 ✓ Certified Review

Product Brand: Holmes

Product Currency: USD

Product Price: 39

Product In-Stock: SoldOut

Editor's Rating:
  • Performance
  • Features
  • Annual Cost
  • Design
  • Price


It is discontinued, and its value is low.