GermGuardian AC5250PT Review: Better Than AC4825

One of the best value pet tower air purifiers that are engineered with 5-stage filtration setup, GermGuardian AC5250PT Pet Pure stands out on its all-around versatility. Utilizing a slim tower framework, GermGuardian AC5250PT is highly recommended for city folks that require a HEPA air purifier in their limited space abode. Focusing on the airflow output, applicable area, noise level, and filters, what packages and spec would make AC5250PT stand out from the highly popular AC4825 air purifier?
± 159.99 p
     Annual filter ^    
± 53 - 80 p
Online price*
Latest Amazon price

GermGuardian AC5250PT Specification

ProductGermGuardian AC5250PT
6.1 x 27.3 x 9.5 in
(15.5 x 69.3 x 24.1 cm)
Weight10.5 lb (4.8 kg)
Coverage (up to)193 sq. ft. (18 m2)
Dust free (CADR)
Pollen free (CADR)
Smoke free (CADR)125 cfm (212 m3/h)
Airflow speed
- Lifespan
- Replacement cost ($)
Charcoal pre-filter
6 - 9 months
HEPA filter
- Lifespan
- Replacement cost ($)
FLT5250PT Filter-C HEPA Pet Pure
6 - 9 months
Carbon filter
- Lifespan
- Replacement cost ($)
Ionizer/ Technologies
UV-light/ PCO
LB5000 UV-C Light
10 - 12 months29.99
Other filter
Pet Pure treatment (antimicrobial)
All-in-one filter
- Lifespan
- Replacement cost ($)
FLT5000 Filter-C True HEPA
6 - 9 months
Optional/ Addon
FLT28CB4 Carbon Filter (4 pack)
FLT5000 Filter-C True HEPA
6 - 9 months$39.99
Noise level
Power consumption
Timer/ SchedulerProgrammable (1 - 8 hours)
More color options
Auto mode
Air qualityAQ indicator
Filter change indicator
Wi-Fi/ BTBluetooth
Remote control
Child lock
Warranty5 years
Email/ Phone support

Product image

GermGuardian AC5250PT key features

  • 5-stage filtration
  • Charcoal pre-filter
  • True HEPA Filter
  • UV-C Technology
  • 5 fanspeed with digital display
  • Filter replacement indicator light
  • Programmable (1 - 8 hours)
  • 5 years warranty

GermGuardian AC5250PT review

  • Affordable price tag for a HEPA tower purifier which cost less than half of other competitors is offering.
  • Complete 5-stage filtration with UV-light and 5 fan speed.
  • Effective True HEPA with Pet Pure that inhibit the growth of mold, mildew and odor-causing bacteria.
  • Proven UV-C light that would assist in eliminating airborne germs and bacteria.
  • Comes with practical features such as timer, filter replacement indicator and digital display.
  • UV function can be deactivated via a button.
  • 5 years manufacturer warranty (AC4825 only up to 3 years).
  • Limited purifying coverage together with average airflow delivery rate.
  • Annual filter replacement cost (with Pet Pure filter C) around the size of a brand new unit.
  • Lacks air quality sensors and Auto mode.
  • Uses combine Charcoal pre-filter rather than dedicated carbon filter.
  • Troublesome filter reset button that requires small object like a paperclip to reset the button.

The starters

GermGuardian AC5250PT dimension
6.1 x 27.3 x 9.5 in
(15.5 x 69.3 x 24.1 cm)
GermGuardian AC5250PT weight
10.5 lb (4.8 kg)

At 6.1 x 27.3 x 9.5 in and 10.5 lb, GermGuardian AC5250PT is not particularly huge or heavy to squeeze in tight spaces. Build quality is ok for a plasticky housing that shows no sign of leakage. There are few premium touches that we particularly like such as the top chrome with glowing light. At the bottom, you will find a base that helps stabilize the slim structure while a carrying handle can be found at the top back. Air inlet is also at the back while clean air is dispersed at the front.

GermGuardian AC5250PT controls

Thanks to the separate buttons and digital display, operating the air purifier is dead easy that even a 3 years old could understand. Circling around the display is a Power button that turns on/ off the air purifier, Fan speed button that will cycle between 1-5 speed. UV-C button that activates/ deactivates the light, and Timer set button that can be set 1-8 hours timer. Right above there is a small Filter Reset button that you will only need to press with a small object like paper clip when the HEPA light flashes continuously.

To recap on what’s included in AC5250PT specification, 5-stage filtration with UV-C Technology and Pet Pure antimicrobial, 5 speed, dedicated UV-light on/ off button, Filter replacement indicator light, programmable timer, ENERGY STAR rated, and 5 years warranty.

Airflow, speed, and CADR

GermGuardian AC5250PT coverage
Purifying coverage
193 sq. ft. (18 m2)
GermGuardian AC5250PT fanspeed
GermGuardian AC5250PT 193 sq. ft. purifying coverage is targeted for small to medium range room size. Across the 5 adjsutable speed, we did not encounter any slow down or inconsistent with the distribution. If you are planning to use it in an open space area such as dining room or living hall, you will need to push it to the maximum speed. For night use in the bedroom or other equivalent sizes, the air purifier will do just fine.
GermGuardian AC5250PT smoke CADR
Smoke CADR
125 cfm (212 m3/h)
Besides the 125 cfm smoke CADR, we do not have the official CADR figures for pollen and smoke, but we believe it should be around the same region. It's not the best output we have seen, but the air purifier should have no problem dealing with large to fine particles plus odor and smoke contaminants.

What’s inside count

GermGuardian AC5250PT Pre-filter
Charcoal pre-filter
6 - 9 months
GermGuardian AC5250PT HEPA filter
FLT5250PT Filter-C HEPA Pet Pure
6 - 9 months
GermGuardian AC5250PT UV-light
LB5000 UV-C Light
10 - 12 months
GermGuardian AC5250PT other filters
Pet Pure treatment (antimicrobial)
^ GermGuardian AC5250PT filters/ technologies/ lifespan
A 4 to 5-stage filtration setup depending on how you look at it, GermGuardian AC5250PT utilize a dual function charcoal pre-filter that is pretty common in this segment of air purifier. For micron size pollutants such as allergens and germs, you'll have the HEPA filter that will capture anything that manages to bypass the pre-filter. The HEPA filter is also coated with Pet Pure antimicrobial agent which inhibit the growth of mold, mildew, and bacteria on the surface of the filter. Last but not least, there is an optional UV-light that would further eliminate airborne allergens, germs and bacteria floating in the air.

Covered against

GermGuardian AC5250PT VS Dust



GermGuardian AC5250PT VS Pollen



GermGuardian AC5250PT VS Hair

Hair/ Pet hair


GermGuardian AC5250PT VS Dust mite

Dust mites


GermGuardian AC5250PT VS Mold/ Mildew

Mold/ Mildew


GermGuardian AC5250PT VS Pet dander

Pet dander


GermGuardian AC5250PT VS Virus/ Germ

Virus/ Germ


GermGuardian AC5250PT VS Tobacco smoke

Tobacco smoke


GermGuardian AC5250PT VS Chemical



GermGuardian AC5250PT VS VOCs



GermGuardian AC5250PT VS Smoke/ Gas

Smoke/ Gas


GermGuardian AC5250PT VS Odor



Keep it down

No official figures released but we reckon AC5250PT noise level should be pretty standard across all GermGuardian tower air purifiers. Expect low to medium noise on lower speed and audible noise on higher speed. Power consumption is between low to average depending on your everyday lifestyle and environment. Unfortunately, there is no Auto/ Sleep mode to help improve on the power consumption efficiency.

At what cost

GermGuardian AC5250PT MRSP/ RSP
+- 159.99
GermGuardian AC5250PT annual filter replacement cost
Annual Filter Cost
+- 53 - 80
^ Replacement filters/ estimated cost
GermGuardian AC5250PT is cheap (after online sales price) for a tower air purifier that comes with HEPA filter, UV-light and Pet Pure antimicrobial. Equipment list is average with only digital display, and timer. Annual filter replacement is another story. While the filter is not too costly to replace and find as with most GermGuardian model, realistically it's close to a discounted, brand new air purifier price with a full set of filters.
Like other GermGuardian air purifiers, the best place to buy AC5250PT is at Amazon because of the 30 days no questions asked return policy, lowest selling price including shipping and the other promotional combination. You can also buy from Guardian Technologies official website but is slightly troublesome with all the registering and different purchase flow. Other retailers you may consider are Walmart, BestBuy, HomeDepot, Lowe's, Costco but you will have to manually check the availability by yourself.

GermGuardian AC5250PT VS the challengers

Honeywell HPA300

Honeywell HPA300

Not exactly a straight swap model, we included Honeywell HPA300 here because most visitors from our site seems to have a keen interest in this particular model. For more than double the price, you'll get way better airflow purifying coverage, and CADR but loses out on UVC-light plus Pet Pure antimicrobial treatment.
GermGuardian AC4825 3-in-1

GermGuardian AC4825

This is the popular cousin that looks identical but offer everything less from coverage, airflow distribution, CADR and filtration for slightly less cash. Why is it more popular than AC5250PT? We will never know.

Winix NK100

Another powerhouse tower machine that cost twice as much but in return, you will enjoy much wider purifying coverage, double all three CADR, and airflow. You will also gain Auto/ Sleep mode, and AQ indicator as standard.

Fellowes AeraMax DX5/ AeraMax 100

Another model that our readers also looked at, Fellowes AeraMax DX5/ AeraMax 100 airflow filtration and performance might not be on the same par as AC5250PT, you will get the sorely missed Auto mode and AeraSmart Sensor function.

 Good to know

GermGuardian AC5250PT relatively small 193 sq. ft. coverage plus carbon pre-filter will capture surrounding dust, hair, fur, cigarette smoke, and odor well. Same does with the antimicrobial coated HEPA filter that can remove particles as small as 0.3 microns from pet dander, dust mites, pollen, mold, mildew, bacteria, and viruses.

Final thoughts on GermGuardian AC5250PT

GermGuardian AC5250PT is certainly the ideal choice if you need something that is versatile and inexpensive. Compare with the likes and dislike in Amazon, 79% of the 4-5 stars reviewers like how easy it is to setup the air purifier and start working on its purifying. Most users praise the multi-stage filtration that can captures dust, pet dander and other particles with ease. Other common praises include the affordable price tag and UVC-light effectiveness. The 15% that gave it 1-2 stars are furious about the durability that their unit either broke down after couple of months, UV-light exposure risk, or burned circuit board issue that is also seen in AC4825. We recommend our reader to take full use of the 3 years warranty if they are considering this air purifier.

Verdicts and ratings

Build quality
Airflow delivery
Particle Filtration
Smoke Filtration

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