BreatheSmart 45i

Well whichever has higher CFM will be better for your allergies,.if both Hepa 13 + Merv 13. But that will also use more energy. So those are two opposing things. If your potential PC box has higher CFM then allen with Merv 13+ filters, then that might be better. But if you run it on low or medium to

Most under 200 dollar range purifiers just are not built to last long on general. I suggest checking the warranty before buying...and most...come with a 1 year warranty. Ive had units break within 6 months and a few more break a little over 1 year. Almost as if...they are made to just last a year or

Purifiers under 200 wont do much for odors unfortunately. Or not for very long. You need thicker filters with black carbon pellets -these absorb odors. The normal white filters in most purifiers just capture particles. Does nothing for odors. Under 200 dollar units will fair chance have a thin carbo

I run my Alen on high. It's still very quiet. Is it not prudent to not comment a lot on a unit we don't have much first hand knowledge on, yes ? Alens have a lifetime warranty. Quiet, + energy efficient. And great for odors+VOCs. I don't know (any ?) other brands units that offer a lifetime warranty

It's better not to run it on low, as it can't filter as much air on low...so your getting like half the CFM pretty much that way. Alens are quiet anyway and already energy efficient...and built to run continuously....so it's a good idea to just let it run on high a good amount of the time. But I lov

Unfortunately I don't. You mean from car exhaust and stuff ? What part of the city do you live in ? I'm right over the bridge in SJ and do notice some pockets of bad air there, which I figure might be factories or something ? But I haven't investigated. I'm just outside the edge of the city air wher

Filters always come with new units. A good mid-range unit for odors is an Alen 45i, with their best filter. Although it's 350. (35i smaller one is 290 I think.). So they have good filters for odors/VOCs with carbon pellets that absorb odors. (Their filters are 60 normal, 90 for that one for odors/VO

Yea, love it. Haven't had an issue, let it run continuously as it's meant to. Lifetime warranty is one of the best in the industry. The indicator light will let you know the filter is "yellow" and then "red" eventually. And if you are signed up for the yearly filter then they will email you before t