Pure 411

I second the Blueair purifiers. I have the 211+ non auto in my living room and the smaller versions in my bedrooms. I've had the 211+ running for about ten years and still going strong. The smaller ones I had to replace recently. I got the table top Mini Max through Costco in a 2-pack and I regret that size. I'll get the smaller standing 411 ones again next time.

I also have two blue air 411 for each bedroom. Can't recommend them enough. They just do the job and filters are pretty cheap. 

Same. So pretty and works amazingly well. Better than any other air purifiers I’ve ever had.

A quick search didn’t make it clear so giving the right site. Not the ones that popped up when I did a search. Site clarifies they are made in canada. https://www.airpura.ca/collections/all-products But as stated above North Box is also a Canadian company although they don’t state where their purifiers are made https://aidankepo.wixsite.com/northboxsystems Commented to raise profile of your answer as I had never heard of airpura before. I had heard of North box.

You spend a third of your life in bedand good sleep is important. Bedroom ones should be the best units. More $$$ doesn't necessarily mean best. Just do your research. I have a Blueair 211 in my bedroom and a 411 in my daughter's. We have a 311 in the basement near the cat litter.

I have horrible sinuses. Over the years, I've used a bunch of different kinds of air purifiers. The ones that I've used for the past 8 or 9 years have been BlueAir. I've used their 211 and 411 models 24/7. They're both quiet, don't use a lot of energy, and have lasted with no problems over that time. The main reason that I like them is that they're easy to clean. A dirty air purifier doesn't do anybody any good. All high quality air purifiers have a pre-filter that collects the larger dust particles. The HEPA filter collects the microscopic stuff. To clean the pre-filter on most of them requires disassembling the unit and struggling with a mesh or fabric filter that's usually glued onto a plastic frame. It's not quick and it's not easy. The BlueAir models have what looks like an ornamental fabric cover on the lower part of the outside. That's actually the pre-filter. To clean it, you slide it off exactly the way that you slide off a sock, and then throw it in the wash. It goes back on the same way that you slide on a sock. It's a brilliant, extremely effective design.