The new Blueair MD Professional has among the highest ratings to date, it filters gas, particles, smoke, voc and a variety of other particles - Just plug it in, select the speed setting, and forget it. Blueair works so quietly, at first you may find yourself wondering if it's turned on. Just check the bright blue power on light.

The Blueair MD Professional air purifier offers commercial quality, reliability, performance and cleaning power for residential and commercial use. Featuring a long-life, high-efficiency motor and galvanized steel housing, these air purifiers are built to last.

The Strong, Silent Swede. Blueair air purifiers are the quietest air purifiers available. So quiet that a blue light-emitting diode was incorporated into the design to let you know that they’re working. At high speed, the sound  level is just 63.5 dBA and at low speed a mere 38 dBA, which is equivalent to a very quiet desktop computer

Features/Benefits:

• HEPASilent Technology
• Electrostatic Ionizer --- Four ion brushes charge the air to make particles cling to the filter media
• One effective filter ----- Highly effective multigas filter
• 30-second filter replacement
• Better Airflow ---- Large grille cleans air easier
• Superior fan motor ---- provides a higher rate of air exchange yet it is ultra-quiet
• Quiet --- 38 dBA on lowest speed
• 5 year warranty

10 Year Warranty:  this air purifier is guaranteed to be free from defects in material or workmanship for a period of ten (10) years from the date of purchase provided that you have completed and returned your warranty registration to Blueair, and that the filters are replaced with original Blueair replacement filters at least once every six (6) months (the Limited Warranty). Within the first 30 days of purchase Blueair will replace the defective unit at no charge to you and reimburse any shipping charges.