Sirena vs Rainbow Water Filtration Vacuum Comparison

Sirena vs Rainbow Water Filtration Vacuum Comparison

More and more people who suffer from allergies, asthma and discomfort caused by dust and pet hair are now looking to water filtration vacuums to rid their homes of allergens.

Why Choose A Water Filtration Vacuum?


Water filtration systems like the Sirena and Rainbow succeed where traditional vacuum cleansers fail.

Instead of relying on dust bags to collect dirt, water filtration vacuums force the vacuumed air into a water reservoir, which keeps the dirt trapped within the water and thus prevents it from being blown back into the air.

This is of critical importance for allergy sufferers who are looking for a hypoallergenic vacuum that can eradicate dust mites and allergens from the home, instead of sucking it in and blowing it back out.

Today we’re comparing two popular models of bagless water filtration vacuums on the market: the Sirena vs Rainbow E2 Black Model.

Let’s take a closer look at the two water-based vacuum cleaners.

The Sirena vs Rainbow E2 Black

The Sirena is a Canadian designed and engineered total home cleaning system.

It uses water-based filtration technology that won’t clog as you vacuum. This means you’ll have 100% uncompromised airflow ensuring a deep and thorough clean. The power of this system will allow you to clean your entire home without the need for nasty chemicals. This includes hard surfaces, carpets, rugs and upholstery.

The Sirena system also comes with multiple attachment heads and nozzles designed to clean different surfaces in your home.

Both the Sirena and the Rainbow utilize HEPA filtration to purify the air.

The Rainbow E2 is also a high quality water filtration vacuum that relies on the power of water to remove allergens and dirt.

The Rainbow is able to clean a variety of surfaces, just like the Sirena. However, the E2 Black Model comes with simplified attachments compared to it’s predecessors. This newer model no longer comes with the curved wand, which is unfortunate as it can be extremely useful for cleaning hard to reach nooks.

Another key difference between the new Rainbow vs the Sirena is that the E2 Black Model now has just one hose for ‘wet & dry’. The Sirena and the previous ‘E Series’ Rainbow models have two hoses: one for wet and one for dry.

The Sirena Water Filtration Vacuum Cleaner, as a standalone product, is directly comparable to the E Series Rainbow models preceding the latest Rainbow E2 Black Model (including the Rainbow E2 Blue Model).

To help you further compare the specifications of the Sirena and the Rainbow, we’ve put together the comparison table below:

SirenaRainbow E2 Black Model
Prices (RRP)$1495$4000 - $4800
Included Accessories  
Pistol Grip Trigger Hose Handle with airflow control vent
Power Nozzle
Floor & Wall Brush
Crevice Device
Dusting Brush
Upholstery Brush
Curved Wand
Confined Space Cleaner & Inflator Tool
Refrigerator Coil Cleaner
Cushion Bag
Attachment Caddy
WandsTwo Extension Wands (one electric)
Total Reach: 78cm (one wand = 48cm)
One Wand (two pieces)
Total Reach: 75cm (half wand = 43cm)
HosesTwo Hoses (Electric & Wet Pickup)
195cm Highest Grade Available
One Hose (Electric & Wet Pickup)
FiltrationWater & HepaWater & Hepa
Warranty10 Year Motor Warranty
3 Year Parts/1 Year Labour
8 Year Motor Warranty
4 Years Parts
MotorItalian Motor
1,500+ Test Hours
2 Speed Brushless Dual Motor
Speeds2 Speeds: High - Low2 Speeds: High - Low
Wattage1200w High Speed
60w Low Speed
1,150w High Speed
50w Low Speed
Rated Horse Power1.609 (High Speed)
.080 (Low Speed)
1.542 (High Speed)
.067 (Low Speed)
RPM19,527 (24,350 free spin)23,000 (High Speed)
3,000 (Low Speed)
Water Reservoir3.5L1.89L
Blower Function
DimensionsMain Unit 28cm x 28cm x 43cmMain Unit 39cm x 30cm x 40cm
Net Weight13.23 kg (Main Unit, Power Nozzle, and all attachments)14.5 kg (Main Unit, Power Nozzle, and all attachments)
Shipping Weight18.34 kg15.87 kg
Buy ProductsBuy Sirena 

Advantages of Buying the Sirena Over the Rainbow E2 Black Model

  • The Sirena is 2-3 times less expensive than the Rainbow: you may be able to find either on discount or perhaps as a second hand unit. But at regular retail price, the Rainbow E2 Black Model is 3 times more expensive than the Sirena
  • The Sirena comes with a much larger water reservoir: the water reservoir of the Sirena is almost double the size of the Rainbow. Rainbow offers a larger water reservoir as an additional purchase, but you will need to fork out more money for the upgrade
  • The Sirena has a longer warranty: both machines will last you a long time However, the Sirena offers a 10-year motor warranty compared to 8 years for the Rainbow
  • The Sirena comes with a curved wand: the Rainbow does not

Comparing the two vacuums, we can see that they are fairly similar in terms of power, reach and functionality. Both machines perform well and can transform your home into a truly clean and allergen-free environment.

So how do you justify the additional expense involved in purchasing a Rainbow? Well, you can’t.

When it comes to price the Sirena system is the clear winner, coming in at roughly a third of the price of the Rainbow E2 Black Model.

That’s incredible value to match the incredible performance.

Bagless water vacuums are the only way forward for a truly clean home, as they are able to not only remove dirt and allergens from surfaces but also keep it from being released back into the air. Traditional bagged vacuums simply don’t cut it for people who suffer from allergies, sinus difficulties, asthma or breathing conditions.

So if you’re serious about eliminating allergy triggers from your home, we recommend you give a water filtration vacuum cleaner some wholehearted consideration.

Click here to read detailed information about the Sirena System and how it can works for you. You can also read more about our natural cleaning products here.

Sirena System Water Filtration Vacuum Cleaner

✓ Canadian designed & engineered with a 1200W Italian motor ✓ Dual stage water & HEPA filtration system to trap dirt & clean the air ✓ Sanitizes the air in the home while cleaning ✓ Perfect for people who suffer from Asthma, allergies and sinus problems ✓ No bags so the Sirena runs at 100% efficiency and suction, 100% of the time! ✓ 10 Year Warranty

Ilonka Hofmann