Speed 3 is 39 decibels, Speed 4 is 44 decibels

Alen Breathesmart 75i vs Classic When the foam layer turns unpleasant, I use a cordless vacuum to clean it. The cordless has little suction to break the foam, and with two huskies, we seem to be doing this on a monthly basis. I clean the sensor with a Qtip every 6 months or so, and when it shows that it's time to change the filter, I order one from Amazon and have it in a couple days. The 75i has the following noise level: Speed 1 is 25 decibels, Speed 2 is 33 decibels, Speed 3 is 39 decibels, Speed 4 is 44 decibels, and Turbo is 49 decibels. Please call our air quality experts at 800-630-2396 if you have any further queries! Customer Service Representatives at Alen

On the two maximum settings, it can be fairly loud. The most straightforward technique is to set the unit to the highest level, or auto, about an hour before entering the room. After that, you should be fine leaving it on the first or second settings overnight. I leave it on auto, and while I'm sleeping, it will occasionally cycle to high, but this no longer bothers me. The better the equipment, the easier it is to breathe, making the noise issue manageable. It is, indeed. It could be up against a wall. The air enters from the sides and escapes from the top. My mine broke after only two weeks. I returned it to Amazon and received a full refund. Because the air in my home was so pure, I purchased an older edition of the Alen Breathsmart Classic. I'm hoping it lasts. Despite the fact that they provide a lifetime warranty, a new product should not break straight away. This 75i was a new model, and I believe it has to be repaired.

On speed 1, the 75i costs between $.02 and $.13 per day based on the national average of 12 cents per kWh. It would cost about $26 per year to keep your 75i running at speed 3 all the time. A pre-filter collects large particles like hair and dust in all Alen BreatheSmart Air Purifier filters (HEPA-Pure, HEPA-Silver, HEPA-FreshPlus, and HEPA-OdorCell). If you have any further questions or concerns, please do not hesitate to contact us. Any negative ion purifier generates ozone as a byproduct. This model has been deemed safe by the California Product Committee. Nonetheless, I would err on the side of caution and avoid using that particular feature of the purifier, especially if someone in the house has known respiratory concerns. Ozone has long been known to harm lung tissue. Ozone is not produced by Alen Brearhsmart. It has undergone extensive testing and is absolutely safe. More ozone is produced by your television or microwave than by this wonderful device. Ozone is produced by air purifiers, as it is by all appliances, but this Alen is one of the greatest. If you have any concerns, you can contact them or go to their website for further information.

No, we have no specific evidence that our antimicrobial filters kill COVID-19. At the same time, our True HEPA filters capture particles with higher than 99% efficiency (.1 micron and larger). Once virus particles are captured by the filter, they die within a few days (based on past research). Virus particles that have been trapped do not recirculate. Our experiment with a live MS-2 phage, a COVID-19 surrugate, demonstrates this ability to rapidly remove viral particles in a room. I hope this was of assistance. Customer service representatives Because of its combination of a powerful fan, a quiet motor, and cutting-edge filtering technology, Alen Alen air purifiers are designed to perform exceptionally well by producing maximum airflow with minimal noise. Don't worry about breathing in dust, pollen, germs, or bacteria since our H13 medical-grade filters can catch particles as small as 0.1 microns. Because Alen air purifiers are designed to run continuously, their daily energy cost is only $0.25. The H13 HEPA VOC/SMOKE FILTER is designed to eliminate toxic gases and aromas from smoke and chemical vapors. This filter's 2.7 pounds of active carbon efficiently eliminates smoking and other chemical vapors from the air, leaving your home odor-free and your lungs healthy. The VOC/smoke filter is ideal for locations prone to wildfires and for filtering out additional chemical and VOC emissions.