- Very attractive price (after discount) for a Wi-Fi enabled air purifier.
- Able to adjust the air purifier fanspeed, mode or timer at any part of the world.
- Flexible timer and Auto mode setup where you could set it through the physical button on the machine or via GT app.
- "Real" True HEPA filter that able captures microscopic airborne particles and allergens.
- Optional UV-C light does well in killing odor-causing bacteria and germs.
- Standard GermGuardian 3 years manufacturer warranty.
- Filter replacement cost could shot up high on heavy use (bad indoor environment).
- Rather constricted purifying coverage which is only suited for small room size.
- GT app unexpectedly shut down couple of times although updates would probably fix it.
- Limited Alexa command while each array commands is overlong e.g. Alexa, ask Gi Gi to set the fan speed of Bedroom to 4.
GermGuardian CDAP4500BCA Specification
Product | GermGuardian CDAP4500BCA |
Dimension | 6.4 x 22 x 8.9 in (16.3 x 55.9 x 22.6 cm) |
Weight | 9.5 lb (4.3 kg) |
Coverage (up to) | 124 sq. ft. (12 m2) |
Dust free (CADR) | 100 cfm (170 m3/h) |
Pollen free (CADR) | 100 cfm (170 m3/h) |
Smoke free (CADR) | 100 cfm (170 m3/h) |
Airflow speed | |
Fanspeed | 5 |
Filtration | 4-stage |
A Annual filter cost ($) | +- 72 - 100 |
Pre-Filter - Lifespan - Replacement cost ($) | Charcoal pre-filter 6 - 9 months |
HEPA filter - Lifespan - Replacement cost ($) | True HEPA filter 6 - 9 months |
Carbon filter - Lifespan - Replacement cost ($) | - |
Ionizer/ Technologies | |
UV-light/ PCO | LB4000 UV-C Light 10 - 12 months+- 24.99 |
Other filter | - |
All-in-one filter - Lifespan - Replacement cost ($) | FLT4825 Filter-B True HEPA 6 - 9 months +- 34.99 |
Optional/ Addon | FLT22CB4 Carbon Filter (4 pack) +- 14.99 FLT4850PT Filter-B-Pet True HEPA 6 - 9 months+- 39.99 |
Noise level | |
Power consumption | |
Timer/ Scheduler | 1 - 8 hours (via control panel or app) |
Sensors | SmartAQM |
More color options | |
Auto mode | |
Air qualityAQ indicator | |
Filter change indicator | |
Wi-Fi/ BTBluetooth | |
ENERGY STAR | |
Remote control | |
Child lock | |
Warranty | 3 years |
Email/ Phone support |
Product image

Key features
- 4-stage filtration with 5 speed and digital display
- Wi-Fi enabled with remote access via GT (Guardian Technologies) App
- Voice Control Capable with Gi Gi skill and Alexa
- True HEPA filter - 99.97% on microorganism as small as 0.3 micron
- Charcoal Pre-filter
- UV-C light technology
- Auto mode/ SmartAQMTM (Air Quality Monitor) - Red = bad, Yellow = moderate, Green = good air quality
- 1 - 8 hours (via control panel or app)
- 3 years warranty
Exciting times ahead for GermGuardian products. GermGuardian CDAP4500BCA WiFi Smart 4-in-1 is the first air purifier in its lineup that featured a Wi-Fi connectivity pairing. Not only you can fully access the air purifier functionality like timer, fanspeed through its GT app, GermGuardian CDAP4500BCA WiFi Smart 4-in-1 is also Voice Control Capable through Gi Gi skill and Amazon Alexa. A simple command like “Alexa, ask Gi Gi to set the fan speed of Bedroom to 2” will automatically set the air purifier fanspeed to 2. Up front the seamless tower shaped design also comes with a SmartAQMTM (Air Quality Monitor) that will light up in Red when air quality is bad, yellow when air quality is so so and green when air quality is good. There is also a control panel with digital display which replicates all the controls available in the app. Rounding up on GermGuardian CDAP4500BCA WiFi Smart 4-in-1 exterior quirks and features, Energy Star and a 3 years manufacture warranty is standard that warrant a pretty solid build quality.
Airflow capability and purifying coverage
Unfortunately GermGuardian CDAP4500BCA WiFi Smart 4-in-1 is one of the weakest Wi-Fi enabled air purifier we tested due to its tower form and price factor. A tremendously efficient air purifier on restricted room size, the airflow distribution rate is actually very consistent regardless of which 5 speed you opt for. In general, GermGuardian CDAP4500BCA WiFi Smart 4-in-1 can be used in living hall but bedroom size would probably suits it best.
Moving on with the purifying capability, GermGuardian CDAP4500BCA WiFi Smart 4-in-1 4-stage filtration depth can covers all ground including odor caused by bacteria. The optional UV-C light works well with the True HEPA filter and Charcoal Pre-filter in trapping up to 99.97% of airborne pollutants and allergens within in its purifying radius.
Noise level and power consumption

Final thoughts on GermGuardian CDAP4500BCA WiFi Smart 4-in-1
Rounding up, GermGuardian CDAP4500BCA WiFi Smart 4-in-1 is the exact mirror of other GermGuardian tower air purifier if you remove the Wi-Fi support. Since it share most of the tower air purifier advantages/ disadvantages, we highly recommend consider GermGuardian CDAP4500BCA WiFi Smart 4-in-1 over the others as the convenience remote control brings and SmartAQM with auto mode is highly justifiably for a little money top up.
Covered against
Dust
EXCELLENT
Pollen
GOOD
Hair/ Pet hair
GOOD
Dust mites
GOOD
Mold/ Mildew
GOOD
Pet dander
GOOD
Virus/ Germ
GOOD
Tobacco smoke
OK
Chemical
OK
VOCs
OK
Smoke/ Gas
OK
Odor
OK