Sirena Anniversary Super Sale - Get $200 OFF Sirena Vacuum

How It Works

Not Your Average Vacuum Cleaner

Unlike traditional vacuum cleaners, the Sirena vacuum uses water instead of bags and filters to trap dust, dirt, and allergens. The air is water-washed and vented fresh and clean back into your home.

Even if you are not familiar with using a water vacuum cleaner, our team of professionals at Sirena can walk you through the process of use step by step. Our team can also explain in detail how the machine functions during use and how to safely care for and store your Sirena vacuum. We’re proud to say that our line of products are not the typical models that you can just find in any store.

Traditional vacuum cleaners use messy bags to trap dust, dirt, and other particles while the Sirena vacuum uses a water-based system to perform the same duty but in a neater and more eco-friendly way.

Water Vacuum Technology


The powerful Sirena motor provides 1000W of suction power.

Dust, dirt, pet hair, and other contaminants are sucked into the basin.


The basin holds up to 3.5 liters of clean water.

Once the dirt hits the water it's trapped. The rapidly spinning separator prevents the water from entering the motor.


The air is vented through a HEPA filter.

The washable HEPA filter captures the odd particles that didn't get trapped in the water basin (usually < 0.01% of all particles). The clean air is then vented out.

The Sirena Water Vacuum Cleaner

While it seems complicated, water vacuum technology is simple at its core. Basically, dirt and particles are drawn into the device, trapped in the water basin, and then run through a backup HEPA filter before venting clean air into your home. Once the dirt hits the water it is not going anywhere. With the Sirena vacuum, roughly 99.99% of all contaminants are captured by the water in the basin, and only 0.01% reach the HEPA filter which is a backup filtration method.

The Sirena vacuum cleaner’s powerful motor provides 1000W of suction power, allowing dirt, dust, pet hair, and other contaminants to be sucked into the 3.5-liter basin of clean water easily. Once the dirt hits the water it becomes trapped and the rapidly spinning separator prevents the water from entering the motor. Clean air is captured by the water in the basin, and only 0.01% reach the HEPA filter which is a backup filtration method

How To Use Your Sirena

Using The Sirena Water Vacuum Cleaner

Follow these step-by-step procedures for using your Sirena water vacuum cleaner to
get the most out of your new device.

Step 1: Fill The Basin

Fill the basin with regular tap water. You want to make sure the water level is above the “min” and below the “max” at the same time. Keep a watchful eye on the “max” line if you plan on picking up liquids. The “max” line is a clear indication of the highest amount of liquid that the basin can hold. If the liquid goes over the max line, the basin must be emptied.

Step 2: Add Optional Fragrances Or Deodorizer

Add optional fragrances or deodorizers. If you are looking for more of a fresh scent, feel free to add these pleasant fragrances to aromatize the air or remove unwanted odors. We strongly advise that the only additives certified to be used with the Sirena vacuum are the Sirena Fragrances and the Ocean Breeze deodorizer. Essential oils or 3rd-party fragrances may cause damage to or discoloration of the basin.

Step 3: Assemble Your Sirena Vacuum

You are then ready to assemble your vacuum. Use the clamps to secure the main unit to the water basin. Put the unit with the basin attached to it on the dolly and don’t forget to attach the power nozzle.You are now ready to start cleaning your home.

Step 4: Harness The Power Of Nature To Clean Your Home

Mix and match hoses, extension wands, and attachments to reach everywhere and clean everything around the house. The floor brush works best on hard surfaces while the Power Nozzle is unmatched on carpets. Stacking all extension wands together will let you reach up to 12 ft (3.65 m) in the air. You can even connect a hose to the exhaust and turn your Sirena into a powerful blower!

Step 5: Look Inside The Basin To Find Out How Dirty Your Carpets Really Were

All done? Detach the main unit from the basin and take a look inside. Do you know the feeling of being simultaneously grossed out and immensely satisfied? That’s what you’ll experience when you see the water after using your Sirena vacuum for the first time. Remember, everything you see in the water was on your carpets, floors, and furniture!

Step 6: Discard The Dirty Water And Clean The Basin

There are 3 ways to discard the dirty water:

  • Dump the water outside in your backyard.
  • Flush the water in the toilet (in most cases it’s completely safe and won’t clog your pipes).
  • Carefully drain the water (tip: use cheesecloth or a strainer) and throw the leftover solid debris in the garbage (recommended if you’re not comfortable flushing everything in the toilet).

Once you’ve discarded the dirty water, wash the inside of the basin with warm water and dry with a rug or let air dry. DO NOT store the basin attached to the main Sirena unit! Doing so will create an air-tight seal which will cause mold and mildew growth inside the basin over time and result in bad smell and discoloration of the plastic.

If you have any trouble assembling your Sirena water vacuum cleaner, we have a team available to take your calls and walk you through the process.

Customer Reviews

Based on 2032 reviews
Phyllis Roll (Zanesville, OH)

Sirena Vacuum Cleaner (Recertified)

David Stoddard (North Branch, MN)
Recently purchased a Sirena vacume cleaner

Since it is just a few days since I have received this vacume cleaner, and so far only used it once, I dont really know that much about the good, the bad, ect, but so far I am impressed with the machine.. It certainly does the job as I have been told would.

KMc (Oyster Bay, NY)
Now, that's what I call a vacuum cleaner

I have never seen so much hair and dirt get collected by a vacuum cleaner. I have two cats and a dog, so there is plenty to pick up. The carpet nozzle works on the runner on the stairs, something my Shark never did. And I love having a hardwood brush in addition to the electrified carpet attachment to really clean the hardwood floors. Totally worth the price, although disgusting to dump the dirty, hairy water.

James Hukill
House warming gift

I do not personally use the product but gave it as a gift because she has a new home and cats , it the only time In my life i gifted a vacuum cleaner and she was excited. She said it was an amazing product. Could not have been happier !

Zaharoula Kotsios (Rincon, GA)
Wonderful product!

I had a rainbow vacuum cleaner for over 20 years until the motor gave out. I didn’t think I would be able to find a replacement product. Turns out the Sirena is a better product that works absolutely great. I’m so glad I found your company.

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