Compact Low Maintenance Solution With Easy Out-of-box Set Up And Ultra-quiet Operation * Designed To Operate 24/7 The Truaire-5 Is The Dependable 5-liter Oxygen Concentrator Choice For Oxygen Patients * Compact And Easy To Transport * Ultra-quiet Operation * Durable Double-wobble Compressor Designed For 24/7 Use * Low Maintenance * Easy Removal And Replacement Of Cabinet And Compressor Intake Filters * 3-year Limited Warranty *