Many say this machine has kept them and their loved ones from coughing, especially during sleep. “Before I bought this my husband coughed every night because of the dust,” one reviewer wrote. “After buying this, my husband sleeps like a baby. He wakes up feeling rested.” Another writes: “I haven’t had my killer cough anymore and the air is so clean. […] It’s so soothing, I could just sleep and relax and nap [without] having to worry [about waking] up congested again.”

“The first night I used the air purifier in my bedroom I did not wake up coughing once, and [I had] no sore throat in the morning,” a reviewer said. “It is wonderful.”

With three layers of filters, this machine purifies the air up to 220 square feet four times every hour, or up to 880 square feet within one hour. It’s customizable and versatile for use around the whole house, thanks to its three wind speeds and timer options. Set it for higher power in your kitchen or living room or have it gently circulate as you slumber.

And a bonus: many users say it makes the air “noticeably cleaner” and causes less dust to accumulate on furniture and around the house. “I have COPD and asthma and it has helped me to breathe much better,” one review said. “I didn’t realize this would happen too, but I am dusting less.”