This unbeatable combination allows for whisper quiet removal of particulate matter, even on the highest setting, 24/7. The biggest difference between the features on the 45i and Flex is that the 45i comes with an auto mode. This uses the same air quality information from its sensor to adjunct the fan to suit the amount of pollutants in the air. The cost of replacement filters is the true cost of any air purifier. Some companies do have a ridiculously low price of the air purifier itself because they earn money on the replacement filters. This indicates at what fan speed setting you should run the Classic large air purifier.
At the top fan speed setting, the noise levels rise to 56 dB which is not ideal. Granted, the smaller alen breathesmart FLEX also has 55 dB noise levels at Turbo Speed but the new 45i and 75i models have managed to reduce that number to 49 dB, a considerable difference. Noise is based in instrument measurements with the model running at a low speed. The lowest speed may provide even quieter operation but will not be as effective at cleaning the air. Even though some manufacturers use buzzwords like “Whisper quiet” and “near silent,” air purifiers move air through their filters using a fan that is powered by a motor. Once you select an individual device, you can access its controls and data.
Alen® air purifiers are engineered to outperform by combining power with efficacy and superb filtration technology. And our beautifully designed, whisper-quiet units do it without disrupting your conversations or your lifestyle. We don’t all know how loud decibels are and what some people consider loud, others may not. That’s why we take videos of all the air purifiers we review, recording each unit at their different fan speeds. Both units come with an AQI (Air Quality Indicator) color wheel in the center of the control panel. Using data provided by the air purifier sensors, this light displays the air quality in your room using five colors.
Truth be told, alen breathesmart Classic drain quite a lot of energy given its CADR rated output.
✅ If you want to pay a little extra for features like an auto mode and the choice of ionization — go for the BreatheSmart 45i. Replacing your filter periodically ensures you’ll have plenty of room to trap those harmful contaminants lasko pedestal fans from the air in your home. As the 45i and Flex are the same size, Alen decided they could use the same filters for both. First, we bought the BretheSmart 75i, which showed us how powerful Alen units can be.
Alen® 45i Air Purifier’s powerful, high-speed fans continuously move air through True HEPA 13, medical grade filters to produce ideal conditions for better sleep. Experience non-stop protection from irritants that can affect sleep quality with our beautiful, quiet, best-selling, bedroom buddy. The Alen® FLEX is the ultimate purifier for the kid’s room, guest room, home office or home gym.
Alen shows they mean business by only including heavy-duty, thick H13 (medical grade) HEPA filters with activated carbon pellets in their units. The 45i boasts a higher CADR at 245 CFM whilst the Flex falls slightly behind at 225 CFM. But, when we put these two units through our performance tests, that extra 20 CFM only translated to one-minute difference to clean the contaminants from our room. When we compare two units side-by-side, we first look at their cleaning power.
Predicted brand reliability ratings are based on estimated problem rates for newly purchased room air purifiers, by the end of the 5th year of ownership. The app is designed to manage mulitple purifiers but lets you control and drill into data from individual units. To recap our previous review, the 75i is a True HEPA Air Purifier designed for residential or commercial use. The latter seems a more likely scenario given the appliance’s 27 x 19 x 12-inch (HxWxD) measurements and its ability to service rooms up to 1,300 square feet. A pair of wheels on the rear make moving the 27-pound unit slightly less cumbersome.