Levoit - Core 300-P

levoit is good and has some very affordable options. we have an appropriately sized levoit in almost every room in our house and it helps a lot with allergies. also make sure to change your furnace filter regularly and use merv 13 or higher filters for it

I have this setup. The Google home options to control it are limited. I just end up using their vesync app for scheduling. I do use Google home with it to setup automations for bedtime and stuff.

https://www.amazon.com/Xiaomi-Purifiers-Efficiency-Intelligent-Purifier/dp/B08LH7XZ3H. This one but the amazon listing isn't available anymore. I think the new ones also support it. Also I believe have different devices available for different regions. I also have a Levoit purifier but that one requires a cloud connection to integration with HA, no local options afaik.

FYI HEPA filters are basically marketing BS in the consumer world. Very few filters with "HEPA" in their description are actually capable of meeting HEPA standards. $400 for a 200sqft capable air purifier is crazy. I have a Levoit core-300 for my 100sq ft room and it clears out my vape smoke in a matter of seconds. I believe its possible to get activated charcoal filters for this to help reduce odor, if not you can find activated charcoal sheets or packets to put inside the air path. There's a community supported HA integration for Levoit, but its reliant on the cloud service. You can flash the Core 300 with ESPHome though and have it work completely locally. I also have a Xiaomi Air Purifier 3C, it also relies on a community maintained integration with Xiaomi Miot but it can work locally too, I know cause I have it blocked from internet access and it works fine. There is also a way to flash ESPHome on these, but I haven't tried. I'm using that one in my living room which is somewhere around 800 - 900 sqft but its a double height living room so there's a tremendous amount of volume there. Side note, make sure you've looked at fixing other parts of your house before getting an air purifier. Make sure your AC ducts are clean, and the filter for your AC is working properly. Though don't put a high MERV filter in there unless your air handler is designed for it. You can actually filter more without putting extra stress on your air handler with thicker filters, but in my experience its rare to see units that can hold the thicker filters without modification. Also make sure your windows are sealed properly.

I’ve been running Levoit air purifiers for years non stop now. I’ve never had any problems.

I have asthma and allergies really bad from having 2 cats. I have 2 levoit 600 and 1 levoit 300. They will definitely help your asthma and allergies. Also talk to your doctor about a daily inhaler or an injection called dupixent. The dupixent is a complete game changer it completely alleviates allergies and asthma. For the cats I suggest getting them on liveclear from purina. My cats were sending me to the hospital every two weeks. I stopped taking the dupixent for a while and I'm super regretting it! I should be back on it in a week! I haven't been able to breathe in my house which has made sleeping a nightmare. So your not alone if this what your experiencing.

I have a bernese and a golden and we use Levoit air purifiers. They work really well for our house which isn't very big

I have had Levoit for a long time and they work well. Granted, if I was in the market I might do more research as it turned out my models weren’t “true HEPA” as advertised.

I have 2 air doctors and a levoit and don't notice any difference between them. If money was no option I'd probably gonwoth Austin Air or Jaspr. If budget then Levoit or Winix from Costco. Or Costco also has a Shark with a 5 year filter.

I have three Levoit 200s and a 300. Two and a half years later, they run pretty much nonstop. No issues.