If you are looking for a 360 degree flow air purifier there is one model that stands out from the rest of the systems on the market: The Honeywell 50250-S.

It does a great job at filtering the entire room in a matter of seconds.

But it is pretty loud, which might affect your decision to buy one of these. In all honesty, there are many reviews on Amazon.com from people who say that the unit is too loud.

If we disregard this one feature, it is a very good unit overall.

The true HEPA permanent air filter is easy to maintain. It is also a relatively inexpensive unit.

On the downside, if you are looking for something very elegant, it’s not very stylish or aesthetically pleasing.

For a 4 member household like mine, it collects a lot of dust so you should probably clean it often, especially if you have a dog like us. We have a maltese dog, which, by the way, is one of the best breeds to keep indoors.

The Company

Honeywell is a well renowned company with a long tradition. Its products are energy efficient and safe for the environment thanks to the innovative technologies they regularly apply to their products.

Their line of air purifiers are well known around the globe as quality products with great cleaning features. They produce whole house cleaners as well as single room purifiers. In general the room size models feature two technologies. There are models with true HEPA filters and models with electrostatic precipitators as their principle filtering component.

What is very useful is that Honeywell air cleaners all have a Clean Air Delivery Rating (CADR) – the amount of clean air provided measured in cubic feet per minute of operation. The CADR can give you the maximum room size that an air cleaner is able to clean on it’s highest setting, so this helps with what size air cleaner to purchase. By dividing the purchase price by the CADR, one gets a measure that tells you the cost per cubic feet cleaned, and makes it possible to compare similar type air cleaners.

All Honeywell air cleaners come with either a three or five year warranty.


This air purifier is capable of filtering mold, pollen, dust, dander, smells and other pollutants, providing much healthier air for your entire home. Some of the important features of this purifier include:

360 Degrees Air Flow

360 degrees air flow
Blows air in all directions

The majority of air cleaners you can purchase are made to allow air flow in just one direction. By contrast, Honey Well 50250-s blows air in all directions. This translates into a more effective cleansing rate of the air in your home.

3 Speed Settings

Sure, this feature is not unique to this unit. It is pretty much standard feature for most air cleaners out there. You can adjust the fan speed, choosing from low, medium, and high. The speed determines the cleansing power, but also (unfortunately) the noise level.

Choose the low setting for a quiet environment, for example, if you want to keep the unit running during the night.

True HEPA and Filter Status Indicators

the carbon prefilter
The carbon prefilter

The true HEPA technology of HoneyWell is excellent. The filter lasts for up to 5 years, probably more if you don’t use it excessively. The pre-filter should be changed every three to six months, but you don’t have to worry about the when the replacement should take place. There are indicators telling you exactly when the time is right.

The unique feature of a lot of HoneyWell units is their lasting HEPA filter. This filter is capable of capturing 99.97% of particles from the air that are 0.3 microns or larger. Most HEPA filters from similar brands should be replaced after just 6 to 8 months, whereas the Honeywell 50250-S HEPA can last full 5 years! You are just supposed to vacuum it from time to time to prolong its life.

The vacuuming operation is pretty straightforward. For example check this video to find out exactly how to do that:

the hepa filter
The true hepa filter

The fact that the filter is so durable will enable you to save a ton of money. You will save as many as 6 to10 new replacement filters when you compare to the other brands with this type of filter. This translated into more than \$300 of saved money during the course of 5 years.


This Honeywell HEPA Air Purifier is capable of dealing with a room as large as 390 square feet, which is one pretty large room. Due to the 360 degrees air flow, it can cleanse the space very quickly.

The CADR rating of this unit is 250, meaning that it can cleanse 250 cubic feet of air per minute.

Bottom Line

On the upside, you will get an air cleaner with 5 years limited warranty, with a true HEPA that will last you a full 5 years. This is a great benefit. The 306 degree air flow could also be counted as an added benefit most of the other systems deliver fresh air just from one side.

On the downside, it is pretty bulky. Due to the 360 degree air flow, you cannot keep it near to a wall. It could also be noisy when set on high.

In this price range, the Honeywell 50250-S is a very good air purifier.

True Hepa 50250 Series User’s Guide (PDF)

Reviews from people who use this purifier