The Electrolux Quiet Clean central vacuum power unit is an attractive contemporary Callisto White color powder coat steel are so reliable and durable they come with a 10-year limited warranty. Electrolux power units feature an all steel body with anti-vibration steel mounting bracket. All units feature a patented sound-reducing technology for lower power unit noise levels and each model includes an exhaust muffler. A sophisticated control system with slow start protects the high power dual stage motor. The control system include easy connect speaker style low-volt wire connectors and a detachable 6 foot power cord.

Model PU3900B is a new design of intelligent large body cleaning system for areas up to 12,000 square feet with a maximum 640 airwatts of cleaning power and is very similar in design and features with the BEAM IQS 3900A & Beam QS 395C models. The Electrolux Control System intelligent models provides valuable feedback on the front mounted liquid crystal display (LCD). The Electrolux LCD Control System information center provides real-time data that shows performance efficiency, when to check the collection receptacle and service notices. With the introduction of the Electrolux Control System, the Electrolux Quiet Clean series is the new standard in cleaning power and performance. With the patented Quiet Pac™ sound insulation system, the Serenity QS models are engineered for installation in all area, even where noise is a factor.

All Electrolux power units provide excellent cleaning with 100% filtration when vented outside. Quiet Clean models use a permanent filter system that is self-shedding and maintenance free. Models PU3650 and PU3900B feature a front mounted built in utility inlet to allow cleaning directly from the unit. Electrolux power units feature durable construction with a metal body and large 7 gallon lightweight plastic collection bin. The collection bin is bagless with a see-through dirt level window and easy to use twist-on latch system. The PU3900B power unit is a large power unit for cleaning larger homes with a single power unit where two may have been required before. The Quiet Clean series PU3900B provides unmatched performance and features from a single motor power unit.