Nuwave OxyPure ZERO Air Purifier with Washable Bio Guard Filter - Covers 2002 Sq Ft, Captures 0.1 Micron Particles, Eliminates Allergies, Smoke, Dust & Pollen - Ideal for Large Rooms, Offices & Homes with Pets

I am in love with this air purifier! If you have any trouble with your breathing, definitely make the investment. The filters are 100% washable - no disposable filters at all - so you will end up saving money after just two years compared to the cheaper brands with disposable filters. And as a boon, this air purifier is Energy Star, so it is easy on your electricity bill. I haven't even noticed a difference in our electricity usage since first using this filter about 6 months ago.For the longest time I had been struggling with my nose deciding it doesn't want to work anymore as soon as I lay down to go to sleep, no matter how I position my head. I was getting so frustrated and at my wits end about my nose picking on me. But not anymore!! Since having the air purifier running in/next to my room at night, my nose works like a gem! I have only had maybe four nights that my nose went back to it's old self, but those were the nights I was also fighting off a sickness of some kind, so that can't be held against the air purifier.Whenever I have some rather "smelly" guests come visit, I can bring the air purifier into the room and have it running to make their stink disappear and not infect my home thanks to the carbon filter in the unit. It's casual enough to not cause them embarrassment and I don't have to suffer or pull out the air fresheners.If I am dusting/deep cleaning, I move the air purifier into the area I am working in to stop me from getting suffocated from all the dust and/or fumes that are kicked up into the air. If my husband is using chemicals in his workshop and the odors are slipping out through the door, I can move the air purifier closer to his room to prevent the odors from spreading further into the house.Anytime there is something that is polluting the air and I notice my lungs are not enjoying it, just being near the air purifier (with it on, of course) almost immediately opens my lungs back up so I can breath again. It is definitely amazing. Seriously, you need this air purifier in your life.The cleaning process is something you'll want to do on a day you will be home to make sure you have it ready to reinstall before bed, but the whole process isn't really too labor intensive. Some of the filters need to just be vacuumed, but others need to be washed in the sink with soapy water. You will then want to gently shake most of the water out before allowing them to airdry inside. This is the part that takes the longest, and I try to speed it up a bit by gently shaking it out periodically. Once the parts are all completely 100% dry, you then reinstall the filters and it is good to go.The filters will need to be cleaned about every 3 to 4 months, and the unit will beep and have a red light on it to let you know when it is time. It took me about 40 minutes to clean the filters the first time I did it (probably only 20 once you know what you are doing), and the drying process took about 6 hours. I was amazed by how much dirt was in those filters! They definitely work, that is for sure.I don't believe that the air purifier is able to clean the air in my entire house at once because of the design of my house (my house is only 1400 square feet, but it is full of hallways). It does appear to be able to get all of the main area at the same time (900 square feet), so if I purchased one additional air purifier, I probably would not have to move the purifier around so much.Once again, I can not recommend this air purifier enough. It is the best investment I have ever made. My sinuses thank this purifier, my lungs thank this purifier, my nose thanks this purifier. It is amazing.