Depending on speed 1, the 75i will cost between $0.02

Alen Breathesmart 75i vs Classic When the foam layer begins to smell bad, I use a cordless vacuum to remove the debris. Since we have two huskies, the cordless vacuum doesn't have enough suction to break up the foam, and we seem to be doing this almost every month. I use a Qtip to clean the sensor around every six months, and when it tells me it's time to replace the filter, I order one from Amazon and get it within a few days.  The 75i has the following noise level: 25 dB is Speed 1, 33 dB is Speed 2, 39 dB is Speed 3, 44 dB is Speed 4, and 49 dB is Turbo. Call our air quality specialists at 800-630-2396 if you have any more queries. Customer Service Agents for Your Alen 

On either of the two maximum settings, it may be fairly loud. Setting the device to the highest setting, or auto, about an hour before entering the room, is the easiest method. After that, you can leave it on the first or second settings while you sleep without having any problems. Even if it periodically cycles to high when I'm sleeping with it on auto, I don't mind any longer. Breathing gets simpler with improved equipment, which manages the noise issue.  It is, indeed. Perhaps it is up against a wall. Air is drawn in from the sides and expelled from the top. In just two weeks, my mine broke. I sent it back to Amazon and got a full refund. I purchased the Alen Breathsmart Classic, an older model, since the air in my home was so pure. Hope it continues. Even though they provide a lifetime warranty, a brand-new item shouldn't malfunction straight away. This new model 75i, in my opinion, has to be repaired. 

Depending on speed 1, the 75i will cost between $0.02 and $0.13 per day based on the national average of 12 cents per kWh. If you ran your 75i at speed 3 constantly, it would cost about $26 a year.  The pre-filter in each of the Alen BreatheSmart Air Purifier filters (HEPA-Pure, HEPA-Silver, HEPA-FreshPlus, and HEPA-OdorCell) traps larger particles like hair and dust. If you have any further questions or concerns, don't be afraid to get in touch with us.  Any negative ion purifier will eventually produce ozone as a byproduct. This model is considered safe according to the California Product Committee. However, in general I would err on the side of caution and refrain from utilizing that particular purifier option, especially if there is someone in the family who is known to have respiratory problems. It has long been known that ozone can harm lung tissue.  There is no ozone produced by Alen Brehr. It has undergone extensive testing and is entirely secure. More ozone is produced by your television or microwave than by this wonderful device. All appliances, including air purifiers, release some ozone, but this Alen is among the best. If you have any questions, you can contact them by phone or go to their website. 

No, we do not have specific proof that COVID-19 is killed by our antimicrobial filters. At the same time, our True HEPA filters have a greater than 99% effectiveness in capturing particles in that size range (.1 micron and larger). According to a prior study, once virus particles are captured by the filter, they expire after a short period of time. Virus particles are trapped and do not circulate again. Our experiment with a live MS-2 phage, a COVID-19 surrugate, demonstrates this capability to quickly remove viral particles in a space. I hope you found this useful. Customer service personnel Alen Alen air purifiers combine a powerful fan, a quiet motor, and cutting-edge filtering technology to perform incredibly well and produce maximum airflow with minimal noise. Our H13 medical-grade filters can capture particles as fine as 0.1 microns, so don't fret if you're worried about breathing in dust, pollen, bacteria, or other contaminants. Alen air purifiers only have a $0.25 daily energy cost because they are designed to run continuously. Smoke and chemical fumes contain harmful gases and odors that are removed by the H13 HEPA VOC/SMOKE FILTER. This filter's 2.7 pounds of active carbon efficiently purges smoke and other chemical vapors from the air, maintaining the freshness of your house and the health of your lungs. The VOC/smoke filter is the best option for places that are prone to wildfires and for filtering out more chemical and VOC emissions.