When it comes to finding the best central air purifier for your home, there are a few key factors to consider. The Blueair Classic 605 is one of four air purifiers tested by Consumer Reports that received an “Excellent” rating on both the highest and lowest speed settings. This model uses Blueair's HepaSilent technology, which can filter 99.97 percent of particles down to 0.1 microns. The BreatheSmart is another great option, as it features Alen WhisperMax technology for quiet operation.
Sound levels range from 32.4 to 48.7 decibels, depending on fan speed. The pre-filter is easy to clean and requires no replacement, and works to capture hair and dust. The next layer is the Max2 filter, which is a combination of activated carbon and True HEPA filters that can capture microscopic particles. However, some users noted that Max2 filters are quite expensive to replace.
The Medify Air is one of the most powerful air purifiers on the market today, and can cover a 3700 square foot home in one hour. It extracts air from two sides while distributing it over a 360-degree radius. The Medify Air has four levels of filtration, including a True HEPA filter that can remove 99.97 percent of particles as small as 0.3 microns. The IQAir includes a superfine filter called HyperHEPA filtration technology, which can collect particles as small as 0.003 microns and stop 99.5 percent of ultrafine particles known to cause viruses. To prevent unfiltered air from escaping, the IQAir includes triple seal technology with a 3D UltraSeal, a New Edition fan, and a maintenance-free motor. The EvenFlow diffuser then delivers air in a radius of 320 degrees, making it ultra-quiet and draft-free.
If your home is prone to mold and other harmful pathogens, the PureAir 3000 is an excellent choice. It uses something called photocatalytic oxidation to break down odors and mold, bacteria and other harmful contaminants in the air in just 24 hours. Most air purifiers can effectively remove particles as small as 0.3 microns, which can improve your symptoms if you suffer from allergies or asthma. When choosing an air purifier, make sure to consider the coverage capacity; our selections range from 1100 to 3700 square feet. The Coway Mighty has digital features such as an air quality sensor for real-time updates, an automatic mode for automatic fan speed adjustment, and a portable remote control for in-range control. It also has low running costs compared to other purifiers with similar abilities. Finally, the best whole-house HVAC air purifier cleans 99.97 percent of airborne contaminants as small as 0.3 microns with a three-stage filter that uses a pre-filter for large particles, a HEPA filter for smaller particles (dust mites, pet dander), and an activated carbon filter for smoke, odors and gases. Whichever whole-house air purifier you choose, it's important to establish a regular maintenance schedule and clean and replace filters and other components to ensure you maintain the healthiest possible air quality in your home.