GermGuardian CDAP4500BCA Air Purifier: Trusted Review & Specs

Guardian Technologies‘s reputation for good air purifiers at budget prices makes it the ideal savior for anyone who want a simple and cheap product to save their lives. And the US company has come to the rescue with the GermGuardian CDAP4500BCA. As you look deeper in the air purifiers category of Guardian Technologies, you need a good GermGuardian CDAP4500BCA Review to understand why this GermGuardian air purifier is being the hot pick in 2019 and beyond for this brand.

In Breathe Quality, we have reviewed all air purifiers under these sections. Also, we guarantee that:

  • We do give honest reviews (both pros and cons) so anyone will guarantee to have the wisest choices.
  • We do not (and never) exaggerate one product just to let you click the links and buy that product blindly.


GermGuardian CDAP4500BCA review


  • Stable and strong performance for the money
  • Great air filtration process
  • Smart Features like Sensor and Wifi Capability
  • Robust design
  • Cheaper than CDAP5500BCA but having the same power
  • 3-year warranty

  • Quite noisy at highest setting
  • Many wrong problems with smart features

GermGuardian CDAP4500BCA was supposed to offer cheap solution of air purifier running with smart features like Wifi capability and Smart Sensor. That’s why this air purifier is – in reality, a CDAP5500BCA minus 6 inches in height to be put in the desk or table. Now, let’s dig deep in this GermGuardian CDAP4500BCA Review (it is also appropriate for the GermGuardian CDAP4500WCA Review).

Other GermGuardian’s Air Purifier Reviews:

GermGuardian CDAP4500BCA Price

This GermGuardian CDAP4500BCA is in fact sharing the same design and air filtration process with the taller brother – GermGuardian CDAP5500BCA. That’s why in US and Canada market, the original price tag of this device is equal with its big brother – $249.

However, as a smaller one, you can find a good discount for this GermGuardian CDAP4500BCA, with a much desirable price tag of $159. With a more attractive price, the GermGuardian CDAP4500BCA costs you as much as the GermGuardian AC5350B, but with more Smart features.

For $149, this GermGuardian CDAP4500BCA is the most affordable Smart air purifier you can purchase these days. There is no alternative option with such generous features, for example the Honeywell HFD-120-Q and SilverOnyx are great, but without the Smart Wifi connectivity.

Moreover, if you click in the link below, we will offer you a much better deal. Interesting?

Top GermGuardian CDAP4500BCA deals right now

GermGuardian CDAP4500BCA 22” 4-in-1 WiFi Smart Air Purifier, Air Quality Monitor, Voice Control, HEPA Filter, UVC Sanitizer with Black Onyx color.

You are looking at the best deal for the smart air purification. Grab the deal and get an up to 40% OFF the original price.

Related post: Best air purifiers in 2019.

GermGuardian CDAP4500BCA Design and Size

As we stated earlier, you are looking at a smaller version of CDAP5500BCA. And this air purifier has a White version, which named GermGuardian CDAP4500WCA. If you are looking for a GermGuardian CDAP4500WCA Review, you are in the right place to read it.

GermGuardian CDAP4500BCA review

That means GermGuardian CDAP4500BCA shares all of features with the bigger brother. With a design-wise, this air purifier stays in a black onyx color, making it more beautiful and unique for the brand.

The front of the device is still a circular light to indicate the current air quality in your room. GermGuardian names their Smart Sensor function the Smart Air Quality Monitor (or AQM).

Also, you will find the back of GermGuardian CDAP4500BCA with an air intake grill. Clearly I don’t like the position of any modern GermGuardian’s air purifiers. It makes me uncomfortable thinking where to put this air purifier. However, as a much shorter version of CDAP5500BCA, this air purifier can be easily put on a desk or a side table.

As usual, we will have a modern-looking control panel at the top of GermGuardian CDAP4500BCA.

germguardian cdap4500bca review

Source: Amazon

While there’s nothing particularly noteworthy about the way the GermGuardian CDAP4500BCA looks, it is a perfect small devices for personal use, with only 9.45 lbs. You need an air purifier to grab anywhere in your house? Voila.

Related post: Best air purifiers for bedroom.

GermGuardian CDAP4500BCA Filters

As the most important criteria to the air purifier’s power, basically we will search for how many filters it has and what types of air filters are used. Being one of the latest GermGuardian air purifiers, GermGuardian CDAP4500BCA introduces a 4-in-1 air cleaning process as below.

  1. Pre-filter – This filter is a decent pre-filtration combining with Activated Carbon Filter. As a result, this air filter is capable of removing any large objects of pollutants and odors created from smoke, cooking, and pets.
  2. True HEPA filter – GermGuardian CDAP4500BCA experiences the same True HEPA technology from the latest devices of Guardian Technologies, to capture 99.97% of as small as 0.3 microns allergens, dust and mold spores. This filter is including an antimicrobial treatment on it to help prevent against any odors or bacteria from getting trapped in the filter.
  3. UV-C Light – This filter is great at killing airborne bacteria, viruses and mold spores that cause health issues by altering the genetic structure of the germ.

There is not much to say about the traditional set of air filters in a GermGuardian one. You will have the latest technology of GermGuardian True HEPA filter, with a performance level filtration of 99.97% allergens down to 0.3 microns. In standard conditions, this filter-B HEPA is as good as the latest filter-C from the same brand.

The efficiency of this GermGuardian CDAP4500BCA is a little bit down from the taller version – GermGuardian CDAP5500BCA. In the same test conditions of 100-sq ft room and duration of 1 hour, GermGuardian CDAP4500BCA can only capture 99.7% of as small as 0.3 microns particles. The smaller size and lower fan speed are the culprits to the lower performance.

The bottom line of this powerful air filtration process is the UV-C light air filter. Using a low power consumption UV bulb, the performance rating of this UV light can match any other GermGuardian products.

GermGuardian CDAP4500BCA review

Source: Amazon

Being the smaller model of GermGuardian, CDAP4500BCA uses the same filter as AC4300, AC4825E, AC4900CA. This air filter-B is much more affordable than the latest filter-C, with the same filter duration of 6-8 months.

Related post: Best air purifiers for allergies.

GermGuardian CDAP4500BCA Room Coverage

GermGuardian CDAP4500BCA is truly a small air purifier for small rooms. Guardian Technologies makes this device for a humble room size of 153 sq ft.

The ACH of GermGuardian CDAP4500BCA stays at 4X. This air changes per hour rating is decent for the room size of 153 sq ft.

Also, the CADR of GermGuardian CDAP4500BCA is 107 Dust/ 99 Smoke/ 116 pollen (cfm). If you are choosing CDAP4500BCA, you will have a nearly the same fan power with CDAP5500BCA, with less than $50.

Related post: Best large room air purifiers.

GermGuardian CDAP4500BCA Sound

Like any other GermGuardian air purifying machines, noise level is not a competitive edge of this brand. That being said, GermGuardian CDAP4500BCA is not an exception with a high noise level at highest setting. However, you can clean the air filter regularly to significantly reduce the noise.

At highest setting, GermGuardian CDAP4500BCA is honestly not a good option for any quiet places, especially your bedroom.

Related post: Best air purifiers for office.

GermGuardian CDAP4500BCA Power Consumption

A good air purifier must be used for a long time to be efficient, and in Breathe Quality I’ve been asked many times: “Do air purifier use a lot of energy?”. We believe that power consumption is one critical factor to decide if this air purifier is good or not.

With an only 5W UV-C bulb, GermGuardian CDAP4500BCA consumes a reasonable amount of energy, with a power rated of 75W. This is nearly half of the power consumption of the latest CDAP5500BCA, and on par with other well-known devices like Winix 5500-2 or Winix WAC9500.

For using a GermGuardian CDAP4500BCA 8 hours per day, it would cost you up to $30 per year. I don’t say it isn’t reasonable for a common air purifier, but as a small air purifier, I expect less energy consuming for GermGuardian CDAP4500BCA.

GermGuardian CDAP4500BCA Additional Features

As the smaller version of the well-known CDAP5500BCA, GermGuardian CDAP4500BCA features the same additional features as the high-end models of Guardian Technologies. You will have a true Wifi Smart air purifier with an astonishing price tag of only $150. Using your smartphones with both Wifi and Bluetooth, you can easily control and monitor your air purifier settings.

Again, you can make use of the Alexa communication. But also again, I am really disappointed with the bad connection with Alexa of another GermGuardian air purifiers. It seems they’d better not add this smart function, GermGuardian CDAP4500BCA may be better.

Luckily, you will be happy with the Smart Sensor of GermGuardian CDAP4500BCA. You no longer need to manually control your air purifier, as the Smart Sensor function will automatically adjust the fan speed according to the actual environment level. Just so you know, this function is mostly found on high-end air purifiers.

Related posts:

1, Best air purifiers for smoke.

2, Best air purifiers for dust.

3, Best air purifiers for mold.

GermGuardian CDAP4500BCA Customer Service

There is not much to say for the brilliant support from GermGuardian’s Customer Service. You can reach them easily via phone or email at anytime.

And the warranty policy of Guardian Technologies is also among the longest to guarantee against all defects, with up to 5 years warranty. But for the smaller version, they only set up for a 3-year warranty. It is still useful, as the smaller one is not as well-built as the high tower devices like CDAP5500BCA, AC5250PT or AC5000E.

Top GermGuardian CDAP4500BCA deals right now

GermGuardian CDAP4500BCA 22” 4-in-1 WiFi Smart Air Purifier, Air Quality Monitor, Voice Control, HEPA Filter, UVC Sanitizer with Black Onyx color.

You are looking at the best deal for the smart air purification. Grab the deal and get an up to 40% OFF the original price.

Our verdict

If you are a fan of GermGuardian, you may easily fall for this CDAP4500BCA air purifier because it has a same performance rating with latest device but a much more affordable price tag. Though the Wifi Smart feature is not actually good, this air purifier is still great with a powerful air filter process and accurate Smart Sensor. However, we honestly advise you to stick with the lower models of GermGuardian, like GermGuardian AC4300BPTCA or GermGuardian AC4825E.

  • Cleaning Power
  • Portability
  • Features
  • Power Consumption
  • Price


GermGuardian CDAP4500BCA is more or less the smaller device flagship of this brand with the cost reduction of $50. It is simply the best choice for a Smart air purifier at the moment.