---
product_id: 629749525
title: "Clean & Empty Cordless Stick Vacuum – Lightweight Cordless with HEPA Filter, Portable, Rechargeable, Auto-Empty System, Stick Vacuum for Pet Hair, Carpets & Hardfloor, White, BU3521"
brand: "shark"
price: "₱60418"
currency: PHP
in_stock: true
reviews_count: 10
category: "Shark"
url: https://www.desertcart.ph/products/629749525-clean-and-empty-cordless-stick-vacuum-lightweight-cordless-with-hepa
store_origin: PH
region: Philippines
---

# 40 min runtime HEPA filtration 99.97% 1.3L auto-empty base Clean & Empty Cordless Stick Vacuum – Lightweight Cordless with HEPA Filter, Portable, Rechargeable, Auto-Empty System, Stick Vacuum for Pet Hair, Carpets & Hardfloor, White, BU3521

**Brand:** shark
**Price:** ₱60418
**Availability:** ✅ In Stock

## Summary

> 🧼 Clean smarter, not harder — the future of cordless vacuuming is here!

## Quick Answers

- **What is this?** Clean & Empty Cordless Stick Vacuum – Lightweight Cordless with HEPA Filter, Portable, Rechargeable, Auto-Empty System, Stick Vacuum for Pet Hair, Carpets & Hardfloor, White, BU3521 by shark
- **How much does it cost?** ₱60418 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ph](https://www.desertcart.ph/products/629749525-clean-and-empty-cordless-stick-vacuum-lightweight-cordless-with-hepa)

## Best For

- shark enthusiasts

## Why This Product

- Trusted shark brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Breathe Easy HEPA Seal:** Captures 99.97% of allergens, keeping your home fresh and allergy-friendly.
- • **Tailored Suction Power:** Auto-adjusting brushroll optimizes deep carpet cleaning and hard floor care.
- • **Effortless Clean & Empty:** Auto-empty base seals away dust—no mess, no hassle, no dust clouds.
- • **Pet Hair’s Worst Enemy:** Powerfins brushroll and pet multi-tool tackle even the toughest pet hair with ease.
- • **Light as Air Maneuverability:** 30% lighter than previous models for fatigue-free, all-day cleaning.

## Overview

The Shark Clean & Empty Cordless Stick Vacuum BU3521 revolutionizes home cleaning with its 1.3L auto-empty base that automatically seals away dust after every use, reducing dust exposure by up to 500x. Weighing 30% less than previous models, it offers up to 40 minutes of runtime powered by a rechargeable lithium-ion battery. Its HEPA filtration system traps 99.97% of allergens, while the auto-adjusting brushroll optimizes suction across carpets and hard floors. Designed for pet owners and busy professionals, it transforms into a handheld vacuum and includes specialized tools for pet hair and crevice cleaning, making it the ultimate cordless cleaning solution for modern homes.

## Description

Meet the new Shark Clean & Empty Cordless Stick Vacuum Cleaner & Auto-Empty System. Clean & Empty features a redesigned 1.3L auto-empty base and a lightweight design for versatile cleaning. With the auto-empty system, cleaning convenience is optimized; Always Charged, Always Empty & ready for the next clean. Inside the base, fine dust and debris is captured after every clean, leaving them out of the air you breathe- Up to 500x less dust exposure*. (*Based on third party-plume testing while emptying vs. Shark Navigator upright manual empty US/CAN NV130.) Clean & Empty has up to 40 minutes of runtime* (*in ECO mode, measured at the hand vacuum) with nozzle technology to auto-adjust to floor type, optimizing brushroll speed for deep carpet cleaning. The Powerfins multi-surface brushroll gives you continuous cleaning contact to dig deep into carpets & directly engage hard floors with self-cleaning brushroll technology allowing for no hair wrap.

Review: Fantastic at sucking up pet hair from carpets! - I've had this vacuum 3 months now and I'm really impressed. I've had Shark vacuums for years now and I usually get their pet, upright vacuums. When my last one died I was looking for similar and wasn't finding a "pet" one at the time, but this kept popping up and seemed the closest. I really was not sold on the auto-emptying station and thought that was unnecessary...but after 3 months of daily use, I love it. Is it needed? No. But does it make life a little easier - yup! I was the worst about finishing up vacuuming and not emptying the vacuum and having to empty it mid vacuum the next time, but this handles that problem and I really love that about it. I do have to remember to empty the bin on the base, but I usually remember before it's too full (usually, not always). I bought an extra set of filters for the vacuum and base and find that so far they need to be swapped out/cleaned about every 1.5 months (as i'm coming up to my next swap out). As for the way it works on pet hair - AMAZING! In our household we have 3 long hair cats, 2 golden retrievers and a goldendoodle that sheds worse than both goldens combined. It's the best vacuum for pet hair i've tried yet. I was really shocked that it got the dog hair off the carpet and backdoor rug that does not like to give up the hair no matter what i've tried. I use to vacuum my living area rug and then take one of those pet hair rakes to it to get the hair off, but this vacuum picks up all the visible hair so I haven't even felt the need to do the pet rake. It has 3 modes and I find I use the eco mode the most. The mid-range mode has so much suction it sucks up my smaller area rugs and the rollers stop working, so I just use eco mode on those and they are low/no pile so it works really well. When I get to the living room area rug it's considered a low pile (but plush) and I use the mid-range mode that auto speeds up the brush, and it picks up the pet hair great. On my backdoor mat that is one of those heavy duty get-the-water-and-mud-off rugs from HD, I use mode 3 and that gets it all off in a few swipes. Things I wish they would change on future models: I wish it just started on eco mode and not the mid-range mode. Or at the very least started where you left off the last use. I wish there was a way to boost the suction while on eco mode like my last Shark did. That little trigger boost was really handy. Battery life is good. Suction is great. It's just really a fantastic vacuum and i'm very happy with my purchase and will hopefully have it for many years like my pervious Sharks.
Review: Love this cordless vacuum - Absolutely love this cordless vacuum. Works well, but the best feature is the automatic empty tray. So easy to use and easy to cleans. It’s a great size not to heavy, easy to swap to handheld and picks up dirt great.

## Features

- AUTOMATICALLY CHARGES & EMPTIES AFTER EVERY CLEAN: Return the vac to its charging dock, where it automatically empties into the base. After every clean: no more dirt on your hands, no more dust clouds in your home, no more cleaning after you clean.
- LIGHTWEIGHT MANEUVERABILITY: The redesigned cordless vacuum is 30% lighter vs. Shark Vertex Pro.
- REMOVABLE HANDVAC: Transforms into handheld vacuum for lightweight above floor cleaning.
- UP TO 40 MINUTES OF RUNTIME*: Deep clean your whole home with up to 40 minutes* of runtime. (*In ECO mode, measured at the hand vacuum.)
- UP TO 500X LESS DUST EXPOSURE** VS. TRADITIONAL EMPTYING: Fine dust and debris get sealed away after every clean, keeping them out of the air you breathe-- no more dust clouds. (*Based on third party-plume testing while emptying vs. Shark Navigator upright manual empty US/CAN NV130.)
- HEPA FILTRATION AND ANTI-ALLERGEN COMPLETE SEAL: Captures and traps over 99.97%* of dust and allergens. (*Based on ASTMF1977, down to .3 microns. Allergens refers to non-living matter.)
- AUTO-ADJUSTS TO FLOOR TYPES: Auto-adjusting & Multi- surface brushroll, optimizes brushroll speed for deep carpet cleaning and directly engages hard floors.
- QUIET MODE: Provides the option to dock & charge silently, and leave the emptying for later.
- LED HEADLIGHTS: Powerful LED lights on the nozzle reveal hidden debris around your home.
- 8" Duster Crevice Tool, Pet-Multi tool, Removable DC-Jack Battery Pack (spare battery packs and charging cords sold separately)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0D15YWYMD |
| Amperage | 25 Amps |
| Batteries | 1 Lithium Ion batteries required. (included) |
| Batteries required | Yes |
| Battery Description | Lithium-Ion |
| Battery Life | 40 minutes |
| Battery type | Lithium-Ion |
| Best Sellers Rank | #23,656 in Home & Kitchen ( See Top 100 in Home & Kitchen ) #80 in Stick Vacuums & Electric Brooms |
| Brand | Shark |
| Capacity | 1.3 Liters |
| Charging Time | 5 Hours |
| Color | White |
| Control Method | Touch |
| Controller Type | Push Button |
| Customer Reviews | 4.1 4.1 out of 5 stars (1,689) |
| Filter Type | HEPA Filter |
| Finish Type | Polished |
| Finish types | Polished |
| Form Factor | Handheld, Stick |
| Global Trade Identification Number | 10622356647462 |
| Included Components | Auto-Empty Base, Cordless Vacuum, Crevice Tool, Pet Multi-Tool |
| Indoor/Outdoor Usage | Indoor |
| Is Cordless? | Yes |
| Item Weight | 11.24 pounds |
| Item model number | BU3521 |
| Manufacture Year | 2024 |
| Manufacturer | SharkNinja |
| Maximum Horsepower | 0.32 Horsepower |
| Model Name | Clean & Empty |
| Motor Horsepower | 0.32 horsepower |
| Number of Items | 1 |
| Number of Power Levels | 3 |
| Number of Speeds | 3 |
| Portable | Yes |
| Product Dimensions | 14.69"L x 10.43"W x 43.5"H |
| Recommended Uses For Product | Carpet, Floor |
| Special Feature | Cordless, HEPA, High Precision Sensors, Lightweight, Spotless Cleaning |
| Style | Clean & Empty (Basic) |
| UPC | 622356647465 622356309783 |
| Vacuum Collection Technology | Rotating Brush Roll, Auto-Empty System |
| Wattage | 180 watts |

## Product Details

- **Brand:** Shark
- **Filter Type:** HEPA Filter
- **Power Source:** Battery Powered
- **Special Feature:** Cordless, HEPA, High Precision Sensors, Lightweight, Spotless Cleaning
- **Surface Recommendation:** All floors

## Images

![Clean & Empty Cordless Stick Vacuum – Lightweight Cordless with HEPA Filter, Portable, Rechargeable, Auto-Empty System, Stick Vacuum for Pet Hair, Carpets & Hardfloor, White, BU3521 - Image 1](https://m.media-amazon.com/images/I/71lhbB4HHrL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Fantastic at sucking up pet hair from carpets!
*by C***A on August 10, 2025*

I've had this vacuum 3 months now and I'm really impressed. I've had Shark vacuums for years now and I usually get their pet, upright vacuums. When my last one died I was looking for similar and wasn't finding a "pet" one at the time, but this kept popping up and seemed the closest. I really was not sold on the auto-emptying station and thought that was unnecessary...but after 3 months of daily use, I love it. Is it needed? No. But does it make life a little easier - yup! I was the worst about finishing up vacuuming and not emptying the vacuum and having to empty it mid vacuum the next time, but this handles that problem and I really love that about it. I do have to remember to empty the bin on the base, but I usually remember before it's too full (usually, not always). I bought an extra set of filters for the vacuum and base and find that so far they need to be swapped out/cleaned about every 1.5 months (as i'm coming up to my next swap out). As for the way it works on pet hair - AMAZING! In our household we have 3 long hair cats, 2 golden retrievers and a goldendoodle that sheds worse than both goldens combined. It's the best vacuum for pet hair i've tried yet. I was really shocked that it got the dog hair off the carpet and backdoor rug that does not like to give up the hair no matter what i've tried. I use to vacuum my living area rug and then take one of those pet hair rakes to it to get the hair off, but this vacuum picks up all the visible hair so I haven't even felt the need to do the pet rake. It has 3 modes and I find I use the eco mode the most. The mid-range mode has so much suction it sucks up my smaller area rugs and the rollers stop working, so I just use eco mode on those and they are low/no pile so it works really well. When I get to the living room area rug it's considered a low pile (but plush) and I use the mid-range mode that auto speeds up the brush, and it picks up the pet hair great. On my backdoor mat that is one of those heavy duty get-the-water-and-mud-off rugs from HD, I use mode 3 and that gets it all off in a few swipes. Things I wish they would change on future models: I wish it just started on eco mode and not the mid-range mode. Or at the very least started where you left off the last use. I wish there was a way to boost the suction while on eco mode like my last Shark did. That little trigger boost was really handy. Battery life is good. Suction is great. It's just really a fantastic vacuum and i'm very happy with my purchase and will hopefully have it for many years like my pervious Sharks.

### ⭐⭐⭐⭐⭐ Love this cordless vacuum
*by T***A on December 3, 2025*

Absolutely love this cordless vacuum. Works well, but the best feature is the automatic empty tray. So easy to use and easy to cleans. It’s a great size not to heavy, easy to swap to handheld and picks up dirt great.

### ⭐⭐⭐⭐⭐ All in all great vacuum!!
*by T***Y on December 8, 2025*

This vacuum works really well and motivates me to clean my hardwood floors more often. I’ll start by saying this vacuum was such a welcome surprise to my previous one. I bought this to replace an all in one mop vacuum combo from another brand that really delivered poor performance so this one totally outshined the competition. 1) it’s really powerful. I can vacuum multiple times in the same day and it will still collect stuff and it’s chamber that will impress you to see how clean it’s keeping your floors. 2) great battery life. I absolutely love that. I can just keep it on. It’s charging stand, which means that I can pick it up anytime quickly and easily and I know it’s going to be charged and ready to go. When I’m done, I just put it back on its charger. 3) the self cleaning function!! I wasn’t looking for a vacuum with the self cleaning function so that was just an added bonus. I really didn’t think I would care about it, but it is SO NICE TO HAVE. Having a vacuum with a self cleaning function that empties the dust bin for you means that anytime you want to vacuum you simply pick it up off the charger and when you’re done? You simply put it back on the charger, that’s it! It makes it so quick and easy to vacuum (and bonus it’s pretty fun to watch) which means I vacuum more frequently and actually look forward to doing it! 4) the roller brush doesn’t trap hair, thank GOD. I truly despise dealing with hair that isn’t on my head it just grosses me out. I also have 3 pets so not having to deal with cutting hair out of a brush after vacuuming is a literal godsend. 5) pivots from hardwood floors to rug easily. It has an auto detect feature that will automatically increase the suction power when on a rug, which is really nice. 6) the buttons for the attachments feel really nice to click on and off. You know when you have a cheaper product and you feel like you’re almost going to break it to click something or push a button? This is easy to put on and take off attachments and feels like it’s nicely made. And it was a big plus for me that it has a handheld feature that can be removed for vacuuming things like the couch or car. 7) it has three suction power modes; Eco regular and a turbo mode, which gives you more control on battery life if you need it to last a little bit longer but don’t need quite as much suction power. My space is only about 1200 ft.² so I’ve had no issue with battery life. Some constructive feedback I would like to include: 1) it would be nice if it could stand up on its own 2) it can’t lay totally flat, though it can go pretty low and get a little ways underneath the bed 3) Lastly, Shark, can we talk about the aesthetic of this thing? I’m not going say that us women are the only ones vacuuming out here but a lot of women are going to be buying this product and we do not want a vacuum that looks like a drill handle 😂 I was honestly very put off by the way this looks when I first saw it, but the functionality of it made it worth it. I would LOVE to see a nicer looking handle for the future.

## Frequently Bought Together

- Shark Clean & Empty Cordless Stick Vacuum – Lightweight Cordless Vacuum with HEPA Filter, Portable, Rechargeable, Auto-Empty System, Stick Vacuum for Pet Hair, Carpets & Hardfloor, White, BU3521
- 4 Pack IW3511 BU3521 HEPA Filter Replacement Part For Shark IW3511 IW1111 IW1120 Detect Pro Lightweight Cordless Stick Vacuum Cleaner. For Shark BU3523 Clean Empty Auto-Empty System Portable Handheld.

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*Product available on Desertcart Philippines*
*Store origin: PH*
*Last updated: 2026-01-27*