Photo of GermGuardian Air Purifiers

In this post, you’ll find a detailed review of the three most popular GermGuardian air purifiers:

  • AC5250PT
  • AC5000E
  • AC4825

Our goal is to help you discover which one of these GermGuardian air cleaners is the right one for your home.

As the name suggests, these are high-quality germ air purifiers that can help sterilize your indoor environment. And there some of the best inexpensive air purifiers available.

However, when looking at the manufacturer’s website it’s hard to tell how each of these air cleaners actually compares to each other.

Each product is equipped with a 3-in-1 air cleaning system, as well as other similar features, but unless you look into the fine details, you may not be able to spot the differences.

In these GermGuardian air purifier reviews, you’ll find out how each of these air cleaning products are the same and how they’re different.

Knowing the pros and cons of each GermGuardian model will help you to easily pick the product that’s best for you while saving you time and money in the process.

GermGuardian Air Purifier Reviews

Similarities Between AC5250PT, AC5000E and AC4825

When you’re looking to buy a GermGuardian air purifier that falls within the 4000 and 5000 series there are multiple features that you’ll enjoy no matter which product you choose.

The most notable feature is the 3-in-1 air cleaning system.

This unique process includes:

  • True HEPA Filter that captures 99.97% of microscopic particles and allergens that cause breathing problems, such as dust, pollen and pet dander down to .3 microns in size
  • UV-C Light that kills airborne germs, bacteria and viruses (including staph, influenza, rhinovirus and pneumonia) making your home a sterile, healthy living space. (Read more about germicidal ultraviolet lighting.)
  • Charcoal Filter that absorbs odors from pets, cooking, smoke, etc. ensure your home smells fresh and clean

Multiple Cleaning Levels

Each one of these germ air purifiers comes with a fan speed control. This enables you to adjust the air cleaning level to suit your specific needs.

  • The low setting is ideal for nighttime use in a bedroom because it provides the quietest operation.
  • The medium setting is best for continuous use throughout the day.
  • The highest setting is best to use when a major flux of airborne contaminants enter into a room. This includes everything from a smelly pet, to cooking odors, smoke, an open window or door that allowed allergens, germs or other contaminants to come in.

Note: Each GermGuardian air purifier model offers a different set of fan speed control levels (3 or 5). This specification is outlined in the section on product differences below.

Energy Star Certified

All of these air purifiers hold the Energy Star Certification and meet strict guidelines set by the United States Environmental Protection Agency. This ensures that no matter which product you choose, you’ll have an air cleaner that’s energy efficient and cheap to operate.

Warranty and Free Support

Each air purifier comes with a limited lifetime warranty and free support. This gives you confidence that your GermGuardian air cleaner will continue to meet your needs without any hiccups.

Note: Each model comes with a different warranty time period, either 3 or 5 years. This time period is outlined in the section on product differences below.

Differences Between Each GermGuardian Air Purifier

Now we come to the most helpful part of this review – AC5250PT versus AC5000E vs AC4825.

What you’ll find below is a detailed list of the features and specifications that set each of these GermGuardian products apart.

This side-by-side comparison should help you figure out which air purifier will suit your needs.

Disclosure: Home Air Guides is reader-supported. As an Amazon associate and affiliate for independent brands, we earn from qualifying purchases made through the links on our site. Learn more.

Photo of GermGuardian AC5250PTAC5250PT

This GermGuardian air purifier contains the most features, while not being too much more expensive than the other models. For just an extra $20 investment you get to enjoy these features:

  • Average Cost: $120
  • Includes an additional pet pure treatment antimicrobial agent that’s added to the HEPA filter, which inhibits the growth of mold, mildew and odor-causing bacteria on the surface of the filter
  • UV-C Light has an on/off switch
  • A filter change indicator alerts you to when it’s time to replace the 3-in-1 filter
  • A programmable timer allows you to set the device to operate between 1 and 8 hours before it automatically shuts off
  • Digital controls let you fine-tune each of the settings and are displayed on an LCD screen
  • 5 fan speeds
  • Made for rooms up to 193 square feet
  • 5 Year Limited Warranty
  • Dimensions: 6.1 x 9.5 x 27.25

See Reviews

Photo of GermGuardian AC5000EAC5000E

This air purifier is your next best choice and is featured on our list of the top air purifiers. The AC5000 looks identical to the AC5250PT but doesn’t include as many features.

With this product you’ll get:

  • Average Cost: $99
  • Includes a filter change indicator
  • 3 fan speeds
  • Made for rooms up to 193 square feet
  • 5 Year Limited Warranty
  • Dimensions: 6.1 x 9.5 x 27.25

It’s also a great product for those of you who are looking for help with removing mold from your home. Find out more about this best air purifier for mold and what it can do.

If you live in a small apartment, studio, or loft, you’ll be happy to know that this is also one of the best apartment air purifiers you can buy.

See Reviews

Photo of GermGuardian AC4825AC4825

This air cleaner is also a popular choice among consumers and is quite similar to the other two GermGuardian air purifier reviews above. Here’s how it compares:

  • Average Cost: $79
  • 3 fan speeds
  • Made for rooms up to 155 square feet
  • 3 Year Limited Warranty
  • Dimensions: 5.5 x 9 x 21.5

This model is very popular due to its low price and ease of use. You can view our full GermGuardian AC4825 Review here.

See Reviews

A Few Final Buying Considerations

Hopefully, by looking at the list of features outlined above you’ve been able to decide on which GermGuardian air purifier you’d like to purchase. However, if you’re still on the fence for which air cleaner to get, or  just want some additional help making the best purchase, consider these final tips:

  • The AC5250PT and AC5000E provide the same air purifying power. You’ll enjoy the same quality of clean air regardless of which device you choose.
  • The major features you’ll be giving up by choosing the AC5000E over the AC5250PT include the pet pure antimicrobial treatment, digital controls, a programmable timer and 2 additional fan speeds. These features are a nice bonus, but not a must-have for every homeowner. The AC5000E can save you $50.
  • The AC5000E and AC4825 cost the same on, around $99 new. The AC5000E is a better buy because it purifies a larger space, includes a filter change indicator and a longer warranty.

We hope these GermGuardian air purifier reviews and comparison guide helped point you in the right direction for which product to choose.

If you’re looking for more air purifier options that remove bacteria and viruses from your indoor air, take a look at our germ air purifier buying guide.

It explains everything you need to look for in an air cleaner for that purpose.