Review on 🌬️ GermGuardian AP5800W: Superior 19" Hi-Performance Air Purifier with HEPA Filter & Air Quality Sensor in White by Terrance Palau

I've been using an old GermGuardian air purifier in my bedroom for about 5 years. It worked very well but when I saw this new model I wanted to try it as I need another air purifier for my daughter's bedroom. Compared to the old model I have, this new version has 3 main advantages: it's quieter, it has an indicator on the front that shows you how dirty the air is and it has a child lock. I suspect it also filters the air better just because it's a newer device with more modern technology. I'm not sure how long the filter will last or how much it costs to replace, so I can't yet comment on how good this air filter is. But I will update my review later after using it for a while and knowing the answers to these questions.