Honeywell HPA300 Air Purifier Review

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When you want to improve the air quality of your home, there is only one way to do it right- using an air purifier.

When everyday cleaning doesn’t seem to get rid of all the dust particles, smoke, and even pet dander in the house, getting air purifiers like the Honeywell HPA300 True HEPA Air Purifier can be a true life saver.

Honeywell is a renowned air purifier brand in the massive air purifiers industry. The company, Honeywell International Inc, is a publicly traded multinational conglomerate that is headquartered in North Carolina.

In 2019, the company was ranked 92nd in the Fortune-100 list.

Having been in operation for over 100 years, the Honeywell brand has become one of the most reputable and trusted brands in the market.

The Honeywell HPA300 Air Purifier is a clear depiction of their utmost focus on quality and performance as this device is currently one of the best-selling in the market.

So the question is, is the Honeywell HPA300 worth purchasing? How does it fare amongst other top air purifier brands in terms of quality, performance, and other aspects? Is the price worth it?

Well, that’s exactly what I aim to unravel in this review.

Honeywell HPA 300 Review- The Features and Performance

Honeywell HPA 300 True HEPA Air Purifier

Top Rated Home Air Purifier

Honeywell HPA300 True HEPA Air Purifier

1.    Honeywell HPA300 Features and Performance

Based on 3rd party independent testing for smoke, dust, and pollen, the Honeywell HPA300 has an outstanding CADR Rating of 300+ cubic feet per minute. This average includes 300 for pollen, 320 for dust, and 300 for smoke.

These ratings indicate that the HPA300 has one of the most powerful air cleaning capabilities in the market.

In fact, according to the manufacturer, this unit circulates air in extra –large 465-square feet rooms up to 5 times per hour. This translates to a whopping 120 circulation times per day, which is truly impressive.

It keeps the air in your house or apartment clean so you can breathe and also helps prevent airborne disease-causing allergens, viruses, and bacteria.

The fact that it covers more surface area compared to the Honeywell HP200 which only covers 310-square feet makes the HPA300 a popular choice for people with large homes or apartments.

Virus being caught by an air filter which can help prevent spread

The HPA300 HEPA air purifier is highly efficient when it comes to dust, allergens, and even bacteria/viruses removal in the house.

The unit uses HEPA filters that capture up to 99.97% of all dangerous airborne particles as small as 0.3 microns. These include smoke, dust, pollen, and pet dander.

The purifier also traps and helps to reduce up to 99.9% of bacteria, mold spores, and certain types of harmful viruses lingering in the air.

If you suffer from allergies, are asthmatic, have got pets, live in a dusty area or an area that is constantly bombarded by wildfires, the Honeywell HPA300 HEPA Air Purifier will capture all the allergens and quickly improve the air quality in your home.

Dog cuddling up with its owner shedding dog fur and hair around the house

Additionally, it comes with a carbon filter that significantly reduces VOCs and all kinds of unpleasant odors from the kitchen, smoke, pets, bathrooms, mold, and other areas.

2.    How Does the Honeywell300 True HEPA Air Purifier Work?

The Honeywell HPA 300 True HEPA Air Purifier has a two-step filtration system which is located right behind the front air intake. It also includes a fan whose job is to suck in air which then passes through the filters inside.

The two filtration systems include:

  • A Carbon Pre-Filter that helps neutralize and absorb odors and VOCs, and also trap larger particles
  • True HEPA filters that trap up to 99.97% of all microscopic allergens, even those as small as 0.3 microns. It also reduces up to 99.9% of certain dangerous viruses, bacteria, and mold spores

The first filtration stage involves Honeywell’s A+ Genuine Carbon Pre-Filter. (The purifier works with both Honeywell’s A and A+ pre-filters)

This pre-filter is the first level of air filtration in the system.

HPA300 Carbon Pre Filter Replacement Pack of 4

Extra Pre-Filters

HPA300 Carbon Pre Filter Replacement (4 Pack)

Its main job is to capture the larger particles so they don’t end up accumulating and blocking the main HEPA Filter.

The larger particles include pet fur, lint, fibers, dust, and others. And because the pre-filter is typically a carbon filter, it also helps reduce all sorts of smells emanating from the kitchen, bathroom, pets, and smoke.

The carbon filter also helps to greatly reduce Volatile Organic Compounds (VOCs) from your household.

Given that countless household products that are used on a regular basis contain these chemicals, the Honeywell HPA300 can help reduce the health risk associated with these dangerous compounds.

Because the carbon pre-filter traps a large amount of dust and particles, it may end up getting clogged and thus cause these particles to get into your main HEPA filter.

To avoid this, the manufacturer recommends replacing the carbon pre-filter after every 3 months- not more.

The purifier comes with 3 HEPA filters and just 1 carbon pre-filter. Honeywell sells replacement pre-filters at an affordable cost. The filters are genuine and of high-quality.

While it may seem costly to keep replacing the pre-filters at least 3 times a year, replacing the HEPA filter is actually more costly. So it’s very important that you follow the manufacturer’s instructions to avoid running into huge costs over time.

Now: The second filtration system is the HEPA Filter.

Honeywell HEPA AllergnRemv Filter 3 pack

Extra HEPA Filters

Honeywell HEPA AllergnRemv Filter (3 Pack)

The Honeywell HPA300 True HEPA Air Purifier comes with 3 R Certified True HEPA Filters that capture up to 99.97% of all microscopic allergens- allergens as small as 0.3 microns and larger.

These include smoke, dust, pet dander, and pollen. The HEPA filter also traps harmful allergy-causing mold spores, bacteria, and certain viruses.

With two filtration systems, the HPA300 air purifier leaves the air in your home clean and completely safe to breath.

I also cannot forget to mention that this HEPA filter comes with a total of 3 air cleaning levels in addition to Turbo cleaning.

These settings include germ, general cleaning, allergen, and Turbo cleaning.

The germ or allergen setting helps maximize performance during the cold, flu, and peak allergy seasons.

The general cleaning setting is suitable for everyday air cleaning while the Turbo setting is ideal for fast particle and odor reduction..

The Turbo setting causes the fan to rotate fast and may therefore produce a lot of noise. This setting may not be suitable for the nursery with a sleeping child or even in the bedroom during sleep time. The lowest speed setting is a much suitable choice thanks to the lower noise levels.

To ensure optimal cleaning performance, the manufacturer recommends replacing the HEPA filters every 12 months.

The unit comes with a filter check or reset light that will automatically remind you when the time for replacing the filter comes.

3.    Honeywell HPA 300 Coverage

One of the most important things to consider when choosing an air purifier is the size of the room you intend to have the air purified.

If you’re looking for the best air purifier for a large room, the Honeywell HPA300 is an excellent choice.

The unit is designed for extra-large 465-square feet rooms and circulates air up to 5 times per hour.

In fact, this purifier has been independently tested by AHAM Verifide to ensure it performs optimally in the suggested room size.

It has also been Clean Air Delivery Tested (CADR). As I stated earlier, the Honeywell HPA300 has a CADR rating of 300+ which is pretty high. Generally, the higher the CADR numbers, the faster the purifier cleans the air.

Does it work for smaller rooms?

Yes it does. However, instead of spending more money on this unit which is designed for larger rooms, you’re better off with the Honeywell HPA100 which is recommended for medium rooms up to 155 square feet.

Honeywell HPA100 Air Purifier

Best for Smaller Spaces

Honeywell HPA100

4.    Honeywell HPA300 Design and Operation Features

This unit is quite large. This is why it’s specifically recommended for extra-large rooms.

Its exact dimensions are 10.83″ D x 20.08″ W x 22.32″ H and weighs 17.26lbs.

Although it’s quite large, it’s not obtrusive. Just find a nice spot to place it. Plus the fact that it has a design that allows it to be placed against the wall makes it easy to place just anywhere.

However, despite its large size, the HPA300 is lightweight and therefore portable. Moving it from one room to the other is easy and hassle-free.

The unit is also very easy to use thanks to its intuitive control panel.

It features easy tap controls that make it extremely easy to choose either of the four air cleaning levels to meet your specific needs.

It also comes with a timer for auto shut-off. This means you can set the amount of time you would like the purifier to run and once the time elapses, the unit will automatically shut-off.

Although this unit includes almost all the essential control features, it lacks an Air Quality Sensor. Although this is not a necessity, it would be nice to find out how inferior the air quality in your home has been.

It’s sleek, glossy black in color, and will match perfectly in any room décor.

5.    Honeywell HPA300 HEPA Air Purifier Energy Consumption

On its highest setting, the HPA300 uses about 132 Watts. It will consume a significantly lower amount of energy when set to the lowest cleaning setting.

Its low power consumption has to do with the fact that this unit is designed to operate with minimal amount of power. In fact, its Energy Star Rated which simply means its energy efficient.

To save energy, you can use the Auto Shut Off feature to allow it to operate at different intervals. For example, you can set it to operate for two hours straight and then turn off. This will save you a great deal of money.

6.    Honeywell HPA300 Cost and Affordability

While the HPA300 is one of the best performing air purifiers in the market, it doesn’t come cheap.

It’s currently one of the most expensive air purifiers on Amazon. This largely has to do with its wide coverage as it’s specifically designed for extra-large rooms.

However, when you consider the value this unit provides, the price is totally worth it. Plus the fact that Honeywell is one of the most reputable air purifier brands with countless positive customer reviews and high ratings makes it all worth it.

The only problem with this unit is that the filters are not permanent- they are replaceable. You’ll need to replace the carbon pre-filters every 3 months and 12 months for the HEPA filters.

Of course, the costs will add up over the years.

However, these maintenance costs shouldn’t worry you because the value this unit offers surpasses all these costs.

7.    Honeywell HPA300 Noise Levels

When choosing an air purifier, another important factor you need to consider is whether the unit operates quietly.

Nobody wants a noisy purifier. It can be really frustrating.

The good news is that the HPA 300 purifier boasts of a very quiet operation.

However, the noise level depends on the settings it has been set to.

For example, the unit is very quiet when set to the lowest setting. You won’t even hear it running. You can place it in the bedroom or baby nursery and it won’t produce any annoying noises. And if it does, it will produce noises that are more like white noise.

However, the highest setting (Turbo Cleaning) is quite noisy.

So unless you’re setting the Turbo Cleaning setting on a regular basis, this unit is pretty quiet.

8.    Honeywell HPA300 Warranty

For your peace of mind, the Honeywell HPA300 air purifier is backed by a 5 Year Limited Warranty. If the unit arrives damaged or stops working after a short time, you can return it for a replacement or full refund from the manufacturer.

Honeywell HPA200 Review- The Pros and Cons


  • Its ideal for extra-large rooms
  • It’s highly effective and efficient in the removal of pollutants in indoor air
  • Its ideal for individuals suffering from health conditions such as asthma as well as those who are allergic to allergens such as pollen or mold spores
  • At the highest setting, the unit can clean air quite fast
  • Boasts of quiet operation
  • The unit is the No.1 brand highly recommended by allergists
  • Portable
  • Its energy-efficient
  • Backed by a 5 Year Limited Warranty for your peace of mind


  • Doesn’t come cheap
  • Does not have an Air Quality Sensor
  • Not suitable for small spaces (though its clearly designed for extra-large spaces-so this isn’t really a disadvantage about this air purifier)
  • Few complaints about a chemical smell when the unit is turned on. The smell should go away in a few days. If it doesn’t, you may return it and get a new unit 

Honeywell HPA 300 Frequently Asked Questions (FAQs)

Here are some of the most commonly asked questions about the Honeywell HPA300 True HEPA Air Filter.

Does the Honeywell HPA300 Produce Ozone?


The Honeywell HPA300 HEPA Air Purifier does not produce ozone.

This is actually a good thing because ozone is not really safe to breathe. When inhaled, ozone can cause some serious damage to the lungs.

How Long Does a Honeywell Air Purifier Last?

Honeywell air purifiers are quite long-lasting. Unless the unit breaks down accidentally, it should serve you for a very long time.

The manufacturer does not offer a specific time frame though. However, with proper maintenance and frequent replacement of filters, these units will operate efficiently for a very long period of time.

Are Honeywell Filters Good?

Yes, Honeywell Filters are very good and are genuine & certified.

In fact, the manufacturer recommends using only the genuine and certified Honeywell Replacement filters to ensure optimal performance.

To purchase genuine Honeywell carbon pre filters, click here to check them out on Amazon.

To purchase genuine and certified HEPA filters, click here to check them out on Amazon.

 Does Honeywell Air Purifier Work?

Yes, absolutely. It’s one of the best-selling air purifiers in the market right now. Plus a lot of customers have many good things to say about it.

Where are Honeywell Air Purifiers Made?

Honeywell air purifiers are not made in the USA. The company has facilities in Portugal and various Asian countries such as China, Taiwan, and Korea.

The fact that they are not made in the US doesn’t make them more inferior to their US-made counterparts. So this shouldn’t really be a problem.

Where to Buy Honeywell HPA300 Air Purifier?

You can purchase the Honeywell HPA300 air purifier on reputable online retailers like Amazon and also on their official web store.

I recommend purchasing it on Amazon as the delivery is not only faster, but its actually a few dollars cheaper than on the official store.

How Do I Clean my Honeywell Air Purifier Filter?

Some Honeywell air purifier models come with permanent washable filters. These can simply be removed, washed, and reinstalled into the unit.

However, the HPA300 model does not have such permanent filters. Instead, the filters have to be replaced within the designated time.

The unit comes with electronic filter replacement indicators that alert you when each filter needs to be placed.

If you have a model with washable filters, be sure to follow the manufacturer’s instructions regarding the cleaning procedure.

Honeywell HPA300 Review – Final Verdict

The HPA300 is ultimately one of the best air purifiers in the market. Plus among all Honeywell air purifiers, this model is the most popular.

It’s best suited for extra-large rooms and it really does a good job eliminating dust particles, smoke, pollen, mold spores, and even bacteria and countless viruses.

Because it covers a much wider area, the Honeywell HPA 300 doesn’t come cheap. However, this is a unit that will offer you great value for money with its exceptional performance.

Hopefully, my comprehensive Honeywell HPA300 Review will let you decide whether this is the most suitable air purifier for your home.