Shark Clean & Empty Cordless Stick Vacuum & Auto-Empty System BU3521 10" Cleaning Path White: Bagless, 40 Min Run Time

A: Yes there are bags in involved.

A: The dock dust bin holds up to 30 days of dust. When the full indicator light turns on, remove the bagless bin by lifting it by the handle. To dispose of the contents, hold it over the trash and press the side release button to let the debris fall out.

A: Hello there, Thank you for your question! Both the pre-motor and post-motor filters will eventually need to be replaced. The pre-motor filter can be washed and air-dried for up to 48 hours, and only needs replacing when it shows visible wear. The post-motor filter should be replaced once a year. For best performance, tap off loose dirt between washes.

A: Where can I purchase the filters? Cost?

A: The battery is removable, but it can only be charged in the vacuum. To charge the battery, place your vacuum on the Auto-Empty Dock. A full charge takes approximately 5 hours. Leaving the unit plugged in will not damage battery life.

A: Power on button and that's all. Amazing!!

A: Press the button on the control panel on the back of the handheld vacuum to turn on power. To turn off power, press the button again.

A: Battery: 1 Non-Universal Lithium Ion, Required, Included

A: The Shark comes with one removable rechargeable battery.

A: The handheld part of the Shark Clean & Empty may feel warm during use due to restricted airflow, dirty filters, or extended continuous use, as the motor is housed in that area. This is usually normal, but it should not become excessively hot. If it does, stop using the vacuum, let it cool, and check for blockages or clean the filters. If the issue continues, please contact our customer service team at 1-855-427-5127, available Monday to Friday from 9 a.m. to 9 p.m. ET and Saturday from 9 a.m. to 6 p.m. ET.

A: That chamber is part of the cyclone/sealed airflow system and isn’t designed to be opened, so you can’t directly empty it; to clear buildup, try tapping the handle gently, running the vacuum briefly to pull debris through, or using compressed air (lightly) to dislodge it, but avoid opening the unit as it’s not user-serviceable.

A: The Shark BU3521 auto‑empty base power cord is approximately 1.2 meters (about 4 feet) long. This length is designed for standard wall outlets, so if your outlet is positioned higher (around shoulder height), you may want to plan for the dock placement accordingly or use a suitable extension solution that meets electrical safety guidelines.

A: Yes, the multi-surface brushroll engages deeply with carpets and has self-cleaning technology to prevent hair wrap.

A: Yes, it easily transforms into a handheld vacuum for above-floor cleaning convenience.