Even when set to the turbo, the BreatheSmart 75i produced very little noise. In this setting, it omits a pleasant low hum that our testers found to be noninvasive white noise. When running on medium, it was even quieter, and it was all but unnoticeable when set to low. While the 45i proves to be highly efficient in energy use, filter replacement costs are considerably increased by average running costs.
The next step was sealing up our 150-square-foot testing room and filling it with smoke by burning paper and other testing materials. We monitored the air with a Dylos air quality monitor; once the room reached our desired level of airborne particulate pollution, we kicked on the BreatheSmart 75i for an hour. After 30 minutes, there were only 16.62% of the original particulates left floating in the air, .003% after 45 minutes, and 0 detectable particulates after an hour. While the odor from the burnt paper wasn’t entirely eliminated, it was severely reduced.
Alen’s medical-grade filtration is highly effective thanks to powerful yet quiet airflow, ensuring pure air for your entire room. As an added safeguard, Alen’s proprietary antimicrobial treatment kills mold and bacteria. As a light sleeper, I thought utilizing the purifier in the bedroom would be a no-go area. However, lasko pedestal fans I was pleasantly surprised to find on the lowest setting, it is barely noticeable. I also had no issues on the second lowest setting, which may have even helped send me off to sleep with its gentle ASMR pink noise hum. Rather than a mere design feature, this light’s color indicates the air quality in the room.
And our beautifully designed, whisper-quiet units do it without disrupting your conversations or your lifestyle. While we all want to be in a room breathing clean air, some machines are Lasko Box Fan simply too noisy and distracting to make it feel worthwhile. In order to see just how noisy each device was, we turned each one on and measured the sound output with a decibel reader.
On Auto mode, a built-in dirt sensor or other inputs will allow the fan to run on a higher fan speed when the air is determined to be dirty and on a lower speed when clean. While the initial purchase price is hefty, the performance offered by the BreatheSmart 75i is outstanding. If you have a large space and need serious performance, this machine is up for the task. If you have a smaller space or are on a budget, other models will likely be better suited. Even if used continuously, running the purifier as recommended, Alen claims the filter will last 12 months.