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LEVOIT Core 300 Air Purifier

By Jesse Kornbluth
Published: Aug 31, 2021
Category: Health

I wrote about the Levoit Air purifier in January of 2021. Many of you bought one. Some of you thanked me (see below).

In late July, with COVID spiking again, I updated this piece because Wirecutter — the New York Times-owned site that reviews products — compared air purifiers. The Wirecutter review has been updated. Its current favorite: the Coway AP-1512HH Air Purifier. The price may give you pause: $201. [To buy the Coway from Amazon, click here.]

At half the price of the Coway, Wirecutter is still strong on the Levoit:

Our pick among small-space purifiers, the Levoit Core 300, is a true-HEPA machine, and has a CADR of 135, which means it’s effective in rooms up to 200 square feet… It was impressive in our tests, reducing particulates by more than 97% on its high setting in 30 minutes in a 135-square-foot New York City office. On medium, it reduced them by more than 92%. It’s attractive and compact, measuring just 14½ inches tall and 8½ inches in diameter, and its display-shutoff feature means it won’t interrupt sleep with bright lights. At around $100 to purchase, it’s also the cheapest up front of all our picks.

A month later, I’m republishing again — we’re facing new challenges to our lungs. The Washington Post delivered the bad news:

The Delta variant of the coronavirus, almost twice as contagious as the original strain, accounts for almost 99 percent of new cases. We know the coronavirus is airborne, carried by tiny aerosols that can collect indoors and linger for hours. That means that good air ventilation and filtration are essential to help cut down on the spread of the virus.

There’s another threat to your lungs if you live in the West, where fires burned all summer and may flare up again:

Air pollution, particularly from wildfires, can cause a host of issues — including asthma, cardiovascular events, cognitive impairment and cancer. The last — according to John Balmes, a physician and member of the California Air Resources Board — is due to the chemical compounds that make up wildfire smoke. “Some of the same PAHs [polycyclic aromatic hydrocarbons] that are carcinogenic in tobacco smoke are found in biomass smoke,” Balmes says. “It’s like tobacco smoke but without the nicotine.”

A recent study found that communities affected by wildfires have worse covid-19 outcomes —– in terms of number of cases and resulting deaths. And kids are especially susceptible to smoke “because they take in more air relative to their size and get a higher dose of whatever pollutant is in the air,” says Stephanie Holm, an environmental pediatrician in San Francisco.

And, finally, The Daily Beast reports that “air pollution is a significant risk factor for developing dementia in old age….Improved air quality over several years is associated with a reduced risk of dementia in elderly women.”

The tech of the Levoit Air Purifier: 3-stage filtration that traps 99.97% of fine particles 0.3 microns in size, including pollen, dust mites, mold spores, pet dander and smoke. It is almost completely silent. In sleep mode, you don’t know it’s on. An Amazon reviewer: “My boyfriend said it was the first time in his life he didn’t wake up with a stuffy nose.” [To buy it from Amazon, click here. It’s strongly recommended that you change the filter every 6 to 8 months. To buy a replacement filter from Amazon, click here. For a filter that works better for pet allergies, click here.]

Two things to know:
– Before you use it, open it and remove the plastic wrapping on the filter.
– If the least bit of noise bothers you, set it on the sleep icon.


READER #1: “I ordered the air purifier immediately. I need two in every room, what with a dusty husband, two borderline collies, a wood stove, fireplace, and some other guy’s cat.”
READER 1 (a few days later): “This air filter is the BOMB! Hub slept from 10:30-6:00 w/o snoring. Praise be to Baby Jesus. I’m getting one more, for now.”

READER #2: “It has a low, almost subliminal hum that creates REM sleep, which has been an infrequent visitor in my life for years. Now I have dreams, and sometimes remember them.”

READER #3: “No dust kitties!”

READER #4: “My sinuses are clear. My allergies require much less meds.”

READER #5: “I smoke. My wife doesn’t. This used to be an issue..”

Call this device what it is: in a dangerously dirty world, a breath of clean air.