Carolina Evans
Carolina Evans
Research Writer
Holds a Master’s degree in Engineering and is keen on her own home’s climate. Sometimes we think that Carolina owns every single product she writes about – that’s ho read more
Reviewed By
Richard Powell
Richard Powell
Expert Consultant
For 8 years, Richard had been working as an HVAC specialist and AC unit installer since his student years. Now, he’s our main consultant on every technical aspect that may read more
Last updated: March 01, 2023

Germguardian AC4825 Review (Spring 2023) is reader-supported. We may earn a commission through products purchased using links on this page. Learn more about our process here
Carolina Evans
Carolina Evans
Research Writer
Holds a Master’s degree in Engineering and is keen on her own home’s climate. Sometimes we think that Carolina owns every single product she writes about – that’s ho read more
Reviewed By
Richard Powell
Richard Powell
Expert Consultant
For 8 years, Richard had been working as an HVAC specialist and AC unit installer since his student years. Now, he’s our main consultant on every technical aspect that may read more
Last updated: March 01, 2023 is reader-supported. We may earn a commission through products purchased using links on this page. Learn more about our process here
Editor's Rating
? is a ranking system developed by our team of experts. It aggregates all the scores given to a product in various aspects including the individual product’s features evaluation given by each expert independently, its customers’ feedback rank, and sales rank.
out of 10
  • Portability
  • Ease of use
  • Noise
  • Efficiency
Users’ Rating
out of 5
118 Users’ Rating
rating rating rating rating rating
rating rating rating rating rating
out of
118 Users’ Rating
  • 5 stars
  • 4 stars
  • 3 stars
  • 2 stars
  • 1 stars
Add your rating:

No matter what size your home is, there are things that can disrupt the quality of the air you’re breathing. Pets come with hair, dander, and odor. Cooking and cigarettes create smoke. Dust shows up on all your surfaces, no matter how often you clean, so it is also in the air. For small to medium-sized rooms, you can get a decent air purifier to solve this issue, cleaning the air of these unwanted airborne particles and nasty smells.

That’s why we’ve created this Germguardian AC4825 review, to showcase the great features this air purifier has to offer. We’ve broken down each feature, too, including the filter types, the CADR, the power consumption, and how portable this specific model is.

We also included the price, so you know just how much the Germguardian air purifier will cost you, plus added in the pros and cons of buying one of these. If you’re interested in getting your hands on this air purifier, check out our full Germguardian AC4825 review below.


Our #3 pick for the best air purifier under 100
Our #1 pick for the best air purifier for pets
Our #4 pick for the best air purifier for allergies
Our #3 pick for the best germguardian air purifier


Cleaning stages
Filters type
HEPA; charcoal
UV-C light
Coverage area
167 sq. ft.
CADR Pollen
CADR Smoke
Fan speeds
Energy Star certification
5.5 x 9 x 21.5 inches
7 lbs.
3-year limited

Germguardian AC4825 Review

The Germguardian AC4825 is similar to many of the other air purifiers on the market, so why choose it over another model? To help you figure this out, we’ve taken an in-depth look at all of the features this model has to offer. Once you have all the information there is about the Germguardian AC4825 and how it performs on a daily basis, you’ll be able to decide if this is the air purifier for you.

Overall performance

germguardian ac4825The first, and possibly the most important, feature we’re going to look at in our Germguardian AC4825 air purifier review is its overall performance. This refers to how well this model cleans the air of your home or office.

This model uses filters that can catch about 99.97% of the dust and other allergens that are floating around in the air in every room of your house. This includes any airborne particles that are 0.3 microns or larger. As well as dust, this includes things like pet dander, pet hair, pollen, dust mites, and mold spores.

It also reduces household odors from pets, cigarettes, or cooking, so the air smells clean and fresh. Any airborne germs are also killed, so any illnesses brought inside your home won’t spread to your entire family.

When working together, these filters leave the air cleaner, healthier, and fresher, so you can breathe easier. You also won’t need to worry about anyone with allergies showing any symptoms while inside your house.

How it cleans the air

The Germguardian AC4825 air purifier uses a three-stage cleaning process with a few different internal filters to get every nasty particle and odor out of the air. It pulls the dirty air in through the intake, where it then passes through these three filters, which trap all those particles and odors. There is also a UV-C light, which we’ll discuss more in-depth later, that gets rid of the bacteria and germs.

Once the air has passed through all those different cleaning layers, it is sent through the outlet at the front of the air purifier and back into the air in your room. In a room that is 167 square feet or smaller, this air purifier will clean and circulate the air in the entire room up to four times every hour. There are also three speeds to choose from, including low, medium, and high, which will alter the rate at which the air purifier cleans out those particles.


germguardian ac4825In order to fully understand how the Germguardian AC4825 air purifier cleans out the air, we’ll need to look at each filter in the three-stage cleaning system separately. They all have a different role to play, so knowing what each one does will help you understand how this purifier cleans the air around you.

First is the pre-filter, which is nearest to the air purifier’s outer case. This one captures all those large particles, like the dust, pet hair, and lint, which could be floating around in the air.

Next is the charcoal filter, located right behind the pre-filter. This layer is used to get rid of those nasty odors that are fouling the air in your home. Included in this list are the odors from cooking, smoking, and pets, along with their litter boxes. This filter catches these nasty smells and sends fresh smelling air back out into your room.

The third filter in the Germguardian AC4825 air purifier is the true HEPA filter. This is the one that does most of the work. It catches 99.97% of those particles that are 0.3 microns or larger that we discussed above. This includes dust, mold, pollen, pet dander, and even mold spores. It traps those particles, keeping them out of the air, and out of your lungs.

Though the pre-filter and the carbon filters are easily cleaned, the HEPA filter needs replacement every few months or so, depending on the air quality in your home. When it becomes dirty, there is an indicator light on the top near the controls, which comes on to let you know it needs to be changed. This takes the guesswork out of using this handy filter. Be sure to change the air filter as soon as this light comes on, as a dirty one won’t be able to do its job properly.

UV-C bulb

The UV-C light in the Germguardian air purifier is a feature you won’t find on too many other models, but it is well worth having on a product that is meant to clean the air in your home. This feature has a UV-C bulb, which lights up with the touch of a button. This bulb works to kill any bacteria, germs, or viruses in the air. This is an especially great feature in cold and flu season, to keep those airborne germs from spreading to every member of your family or to guests in your home.

As the light warms up, it also activates the titanium dioxide strip, which then kills any odor molecules that may have gotten by the charcoal filter. This ensures the healthiest, and freshest, air possible in your home.

Keep in mind that the UV-C bulb won’t last forever. Depending on your use, it will likely need to be replaced every 10 to 12 months, but its germ-killing ability may be worth the extra cost.


Germguardian AC4825The Clean Air Delivery Rate, or CADR, is a rating that the Association of Home Appliance Manufacturers (AHAM) created. This is a certified measurement to show how well the air purifier you’re using can clean the air in a specific room of a specific size.

The CADR rating is usually displayed with a different number for dust, tobacco, and pollen, each of which has a different range. These include a range of 10 to 400 for dust, 10 to 450 for smoke, and 25 to 450 for pollen. These numbers are represented as cubic feet per minute, and the higher the number, the faster and more effective the air purifier will be at cleaning the air.

For the Germguardian AC4825, the CADR ratings are 118 for dust, 108 for smoke, and 125 for pollen. This means that this particular air purifier can clean dust out from the air in a room of 167 square feet or smaller at a rate of 118 cubic feet per minute.

Power consumption

The purpose of this device is to clean the air in your home. If you turn it off, though, the air can start to collect those airborne particles again, which means you’ll be breathing them into your lungs in no time. That’s why it is recommended that you keep your air purifier running at all times, at least when you’re in the house.

Of course, if you’re going to run it consistently, this can add to your energy bill. That’s why Germguardian air purifier has AHAM and Energy Star certifications. This means it meets all the energy standards of the U.S. and Canada. It consumes low amounts of energy, so it costs less to use, plus is safer for the planet.

Of course, you need to consider how long you’ll actually be using it. The more time it spends running, the higher your bill will be. The fan speed will also factor in, as the higher speeds consume more energy, so to save yourself a few bucks each month, stick with the lower speeds and use it only when you’re at home.


Germguardian AC4825Another important feature in our Germguardian AC4825 air purifier review is the portability of this particular model. Air purifiers of this type are meant to be lighter and easier to move around as needed, so you don’t want it to be oversized or extremely heavy.

The dimensions are 5.5 x 9 x 21.5 inches. This means it is a slim tower model, which is about as tall as the arm of a standard-sized couch. Because it is so thin, this air purifier will likely be easy to tuck into a corner or between a few pieces of furniture, as long as you leave some space behind it for the air intake. It also has a six-foot cord, so you don’t even need to have it right next to an outlet, making it even more convenient.

The Germguardian is only seven pounds, likely due to the lightweight plastic used for the outer material and internal parts. Because it’s so light, you’ll be able to move it from room to room if needed, without straining your arms or back, and the built-in handle on the back makes carrying it even easier.

Where to use it

germguardian ac4825When you’re buying an air purifier, you likely have a specific place in mind that you want to put it in. This could be in a specific room in your home or at the office, where the air is less than clean.

The coverage area for the Germguardian AC4825 air purifier is 167 square feet or smaller, so it won’t work well in a huge living room or an open, finished basement. So, this model is best for any small to medium rooms in your home.

Since it is very quiet on the low mode, you can use it in your bedroom. It will also fit nicely in a smaller living room, a kitchen, or a home office. If you work out of the house, but still have your own office, it will likely fit in there as well, so the air you breathe at work is as clean as the air in your home.

The portability of this unit also makes it a great travel item, if you have a bit of extra space. You can put it in your car or leave one in your cabin for those weekend vacations out in the country.


There is a wide range of air purifiers on the market today, so you can check them all out to see which one is the right model for your home. These all come with different price tags, though, depending on the features, filters, and coverage area that each particular model has to offer.

If you want all the bells and whistles possible on a new air purifier, you’ll likely be paying a few hundred dollars for one. This can be costly, especially if you have to buy replacement filters every few months.

The Germguardian AC4825 air purifier is one of the cheaper models you can get. It costs less than $100, though you do need to buy those replacement HEPA filters a few times every year. This low price could be due to the fact that it only has three speeds and no other fancy modes. It does have the three-stage filtration system, though, plus the bonus of the UV-C light for killing germs, so it will likely be well worth the money you’re spending.

Key features

>Every product has a list of great features, and the one in our Germguardian AC4825 air purifier review is no different. To be sure you know what you’re getting with this model, we’ve listed everything it has to offer, including:

    • HEPA filter for removing 99.97% of airborne particles of 0.3 microns or larger;
    • Charcoal filter for odor reduction;
    • Pre-filter for large airborne particles;
    • UV-C light to kill germs, bacteria, and viruses;
    • Removes dust, pollen, pet dander, pet hair, and mold spores;
    • Indicator light when filter is dirty;
    • Lightweight plastic construction for easy portability;
    • 3 fan speeds, including low, medium, and high;
    • Quiet low speed;
    • AHAM verified and Energy Star certified;
    • Slim tower design;
    • Works well in small to medium-sized rooms;
    • Circulates the air in the room 4 times every hour;
    • 3-year limited manufacturer warranty;
    • Cord is 6 feet long;
    • Built-in handle on the back of the machine;
    • Attractive design, so will fit nicely in any room;
    • Easy to use control knob for fan speeds;
    • Separate button for UV-C light;
    • Blue light shows that UV-C is on, plus is a handy nightlight if needed.

  • Three-stage cleaning system
  • Removes odors from the air
  • Kills germs, bacteria, and airborne mold
  • Washable carbon filter for reduced replacement costs
  • UV-C light option
  • Slim design
  • Portable
  • Highest fan speed is quite loud
  • The HEPA filter needs to be replaced, adding to the cost of the air purifier


If you’re reading this Germguardian AC4825 3-in-1 air cleaning system air purifier review, you’re likely considering buying this model for your home or office. This particular unit is a good choice for anyone who has a small to medium room to use it in, thanks to its great features, like the three-stage filtration system, the UV-C light, the easy-to-use controls, and the slim, portable design. Though it needs a replacement filter now and then, the low initial cost makes it well worth getting, for those on a budget or anyone else who wants cleaner, fresher air in their home.

Leave a comment

Your email address will not be published. Required fields are marked *