We have three of them, and the difference was immediate after installing two in our RV. The air felt noticeably cleaner right away.
We’re also using the portable unit in our new car, and within just a few days, that “new car smell” (which I really dislike) was completely gone.
Customer service was just as impressive—the portable unit didn’t come with a DC plug, and they sent one out to us for free without any hassle.
Thank you, Airlock!