Coway Mighty vs. Blueair Blue Pure Air Purifiers - ConsumerReports.org

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Coway Mighty vs. Blueair Blue Pure Air Purifiers - ConsumerReports.org Posted: 27 Nov 2019 03:39 PM PST CR's Dave Trezza and his team of engineers test each air purifier in a sealed chamber, into which they inject smoke and dust particles. A particle counter measures the change in particle concentration as the air purifier runs for 15 minutes on the highest speed, and then again at a lower speed. Our engineers also measure noise levels while the air purifier is in use from 4 feet away. Here's the breakdown of how each model performs. Particle Reduction and Noise at High Speed The Blueair aces our particle reduction test on high speed, meaning it effectively clears the air in the room of both large (dust) and small (smoke) particles quickly. The Coway scores slightly lower than the Blueair for particle reduction, meaning there were more particles left floating in the air after 15 minutes. Both models rate Fair for noise at high speed, which is on par with the sound of rainfall. But since the Blueair clears the room a bit better, it wins this test. Particle Reduction and Noise at Low Speed The low-speed setting is where we see the biggest difference in performance between the two models. The Blueair once again earns an Excellent rating for clearing the air in the room of particles. The Coway is no match here: It removes far fewer particles at this speed than the Blueair, earning a Fair rating in this test.  As for how loud these models are while operating at low speed, the Coway does better than the Blueair, earning a Very Good rating compared with Blueair's Good rating, but that lead is moot since the Coway does a poor job of cleaning the air at this setting. The Blueair gains major ground ahead of the Coway in this test. Annual Cost to Operate and Maintain In order to maintain clean indoor air, purifiers should operate 24 hours a day. We estimate it will cost $52 for the electricity needed to run the Blueair all day (based on an average of high and low speeds). The filter needs to be changed about every six months at $70 a pop, so the total annual cost to maintain and operate the Blueair is $192. The Coway makes a smaller dent in the electric bill: $44 a year. Plus, its HEPA filter is good for one year (the carbon filters need to be replaced every six months). Replacement filters for an entire year come out to $43, making the total annual cost $87. "That's really low," says Trezza. "The average annual cost for our top-rated models is about $200." As long as you run it on the high-speed setting and don't mind some din in the room, the Coway can save you some major bucks in the long run. It wins this comparison by over $100 annually. Ease of Use The Coway scores a Very Good rating for ease of use while the Blueair gets a middle-of-the-road Good rating because of a couple of factors: It doesn't have a carrying handle or wheels, making it a little more cumbersome to move from room to room, and it has only one unlabeled button that you push multiple times to control power and speed settings. Some users may appreciate the minimalist look, while others may find it confusing to operate. The Coway is a nose ahead of the Blueair in this assessment.

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