QuietClean Tower (HFD120Q)

I've made many CR boxes but I am kind of wondering if indeed they are cost effective. Like it can be $75-100 to make one new every 3-4 months, just buying the new filters, whereas I just bought two air purifiers at $100 each that don't have any replacement filter costs, so that's $100 to last for 2-3 years or more.

Two parts to my message: 1. Is to recommend looking into Honeywell Quietclean. I just bought two for $100 each in Canada, medium sizze ones, and they don't require buying replacement filters because they use a special technology. They were on sale because they're an old generation. I did see a sale or two in the US too when I was searching. From my understanding the technology is good, maybe not quite HEPA equivalent but possible close - and from my experience they work very well. There are a couple notes about using them, about the technology, I can add if you are thinking to get them. *(EDIT: just to add about the technology, it uses ionization but not the regular type - it only ionizes the particles that come close to the filter, to be able to trap them better, whereas regular ionization works by ionizing all particles and making them drop to the ground. So it produces a little bit of ozone but within safety guidelines, for instance it is certified under California's regulations. So that was one of the things I was going to add, but didn't want you to dismiss it outright upon hearing that is part of the technology).* 2. 'Rare immune disease' makes me think of COVID and how many complications it is proving to have. Most people don't pay enough attention, but it's not very forgiving. I would recommend to look into a "Still COVIDing" group and other places, like a sub or two on reddit, where you can learn more about immune problems etc resulting from COVID and how people are dealing with them. It sounds like your sister and her family may be going back to masking, if they had abandoned it before now (some people have kept it up interrupted since the start of the pandemic, including myself).

Look for Honeywell Quietclean. It's a different technology, and the big bonus is that you don't need to buy replacement filters\*. Last I saw it was $129 in USA. Do a search in this sub if you want more info on it. EDIT: \* you do need to buy replacement carbon filters if you want, because they aren't re-usable after you use the two that come with the purifier, but those are for VOCs - and in terms of particle filtering, it is all reusable filtering.

I got two Honeywell QuietClean legacy models and they are both good, no smell and work well. Apparently they do a little bit of ozone but not much, it is under the California standards level so they are certified. Also they have reusable filters (two types) so there is not cost in the future to keep using them except the electricity! And they were on sale because the old model.

My recommendation is Honeywell QuietClean medium size, if still on sale from LondonDrugs for $99 (free shipping anywhere in Canada). You don't need HEPA, you can even make CR boxes (though higher-rating filters are better). The thing with the Quietclean is you don't need to buy replacement filters. It uses kind of an ionizing technology, but it only ionizes the particles at the purifier, so they will get caught easier by the inner filter. Regular ionizer makes the whole space ionized then all the particles drop to the floor and you need to sweep or vacuum the up or you'll just end up kicking them into the air later. The Quietclean you don't need to buy replacement filters because of this technology, it has both a washable pre-filter and a vacuumable inner filter and they both last. But the white model they're selling at LD, also has a carbon filter to use alternatively as the pre-filter, but that you will need to buy replacements if you want to continue that (carbon filters out VOCs, like smells and gases) but it doesn't seem to be a great carbon filter (very thin, whereas to do serious VOC filtering you need pounds of it as granulated carbon, which is only high end purifiers, or buy a 'grow-up' setup of carbon canister, duct fan, and add a HEPA downstream, to make it yourself. . Wildfire smoke does have some VOCs as part of the problem but I think the farther you are away from the fire, the more the problem is simply particles. Pollution could also be a mix of VOC and particles. Your other problems of mould and dust are particles, though mold can make VOCs too if it's bad. The biggest reason I recommend the Quietclean is because it is no replacement filters needed, and it is more energy efficient too because the technology doesn't make as much air resistance. Some people say it filters as good as HEPA, some people say otherwise, but I think it's pretty decent. It's on sale at LD because these are older generation models, so they are discontinued.

no way! they shipped to Ottawa, even though they only have stores out west. maybe if you know anyone in Ottawa who could take a shipment it'd be worth it to get a couple? they are big though, like 3 feet tall boxes, even this 'medium' size i got an 'important note' from my bank last week about some policy they're implementing - except for Quebec residents. businesses need to figure this stuff out! ps if you want to filter gases etc, i can give you more info about the 'grow ops' setup.

Hey again! I managed to get myself a couple of those discounted units through a distant relative of mine, so thanks. However, just now setting them up, I found in the booklet (and then [verified on their website](https://www.honeywellstore.com/store/products/honeywell-quietclean-tower-air-purifier-with-permanent-filters-hfd230bv1.htm)) that the stock filters (washable, or replaceable carbon) are only rated for filtering particles 3 Microns and larger. It’s a nice unit at great price—but doesn’t seem to adress the main issue raised by OP with the wildfires affecting us in Montreal, from which the most harmful particulates are 2.5 Microns and smaller. Any insight in this?

I love the ugly-ass Honeywell tower one i have. You can get washable filters too, which is a nice money saver. It's relatively quiet and powerful. Everyone should make at least one Corsi-Rosenthal box though because they are super effective!

I have a huge Honeywell tower that I loved for my old studio apartment, but now that I’m in a large house I honestly think corsi-Rosenthal is the best bang for your buck. They’re incredibly effective, cheap, good for large spaces, and customizable.