AIRDOCTOR AD5500i SMART HEPA Air Purifier for Extra Large Spaces & Open Concepts with UltraHEPA, Carbon & VOC Filters - Captures particles 100x Smaller than HEPA Standard (AirDoctor 5500i Smart)

I purchased the largest size and it works GREAT! Cats' litter generates a LOT OF DUST and this unit handles it, no problem. I liked them so much I wound up purchasing 3 of them.

Outstanding air purifier. We purchased one for our nephew and he raved about it, so we got one. Works great

Works as advertised. Super quiet once air is clean.

I very much wanted and needed this HEPA carbon filter to work. My wife has awful allergies year round. She is also very sensitive to odors or scents. I researched and researched through Amazon reviews as well as multiple industry reviews to select the best unit. And this unit was suppose to be one of the best.The Good: Its arrived well packaged and on time. The unit is attractive, light and very easy to roll around. The control board is easy to use. Love the auto setting feature, fan speed options and color lights to indicated when filters need to be replaced and how clean the air is. The auto feature is quiet once it purifies the air and the dim light feature is nice when running a night.The Bad: No review ever stated that this Air Dr unit process a scent even with the ionizer not actuated. It smells like a fabric softener smell which is what an ionizer unit would smell like. Turned on an ran on auto on the first night. Next morning my wife felt like she had Pneumonia. She looked and felt deathly ill. I double checked to ensure the ionizer was not on - it wasn't and tried running it for 4 straight days while my wife slept in another room. No effect. The unit process that same smell. HEPA filters should be odorless, this one is not! Bottom line: don't purchase if anyone in your home is sensitive to odors or scents. Thank goodness that unit was purchased on Amazon. They accepted my return free of charge with full refund since i owned it for less than 30 days.The remedy: i am going to bite the bullet ( a very expensive) and have a Abatement Air whole house HEPA filter installed on my HVAC unit, have installed UV-C lamps next to my HVAC evaporator coil and my air return, then finally install a Aprilaire 4" MERV 16 air filter. If i think of it, i will update the post to let you know how effective the remedy measures are to alleviate my wife's allergy issues, specifically pet dander, dust, mold and mildew, not to mention odors and scents. Hope this review helps the allergy suffers out there.

Works beautifully. Removes food odors and keeps excellent air quality. Before purchase, would wake up w/ nose stuffed up. Now, nose and throat are clear--no more blowing my nose every morning. Love it! Worth every penny!

Absolutely love this air purifier / It works great and our air is so much cleaner / Love that the light changes color depending on the air quality.

We started our air purification journey on a whim.I have moderately bad seasonal allergies (ragweed and cedar) and it is ragweed season and I just couldn't face another 5 months of allergy medicine with a decongestant that requires me to swipe my drivers license to buy and has a monthly limit of how much I can purchase. Some stores around here only sell 5 days worth at a time and limit 1 package so I end up going to the store multiple times a week to purchase the "controlled substance" that is over the counter allergy medicine.One of my colleagues has been telling me to get an air purifier for years.We started with a small one (different brand) that works for just one room. We put it in the bedroom and after the first night I woke up with both nostrils open and able to breathe freely. My eyes weren't sticky. it was amazing. But that little room purifier won't support our big open concept living space.So we purchased this Air Doctor 5500 and we're very impressed with its performance. We leave it on auto 100% of the time and 95% of the time it is so quiet. We can tell it works because within seconds of cooking we hear it spin up to a higher setting automatically to purify the air of cooking odors and compounds.It is doing a great job filtering ragweed particles from the air. We have indoor / outdoor pets that bring in a lot of these airborne particles on their coats which usually have me sneezing shortly after they come in, especially when I pet them. The Air Doctor 5500 has changed this completely. When it is running it is as if I never had allergies! Total life changer!My only reason for 4 stars instead of 5 is that in the 5000 they had a one air intake and 3 filter system. In the 5500 it is a two air intake and 6 filter system. So they've effectively doubled the number of filters which doubles the annual costs. Those filters have to be replaced every six months on average for a cost of around $250 so it's kind of like printer ink. It's a lot to pay up front and every couple years the maintenance costs are higher than the cost of the entire system. It feels scammy and gross. I see other air purification manufacturers setting their businesses up the same way to price gouge on filters.So I don't like this about the Air Doctor. And the costs to maintain it are much higher than the costs of my allergy medicine. But if we had three or more people in the household on allergy meds: we'd break even.If you're on a budget please take an hour to run some numbers and think carefully about which air purification system is right for you, because they will have no value to you at all if you're not able to maintain the filters.#recommended

Love my Air Doctors. I have 11. Loving the big boy!