The pollution in your home is way worse than you think it is.
We spend most of our time indoors. Yet the air around us can still contain pollutants and excess CO₂.
Most air purifiers filter what’s already in the air. AlGreen takes a different approach: instead of working against nature, we work with it.
Our living air purification systems harness microalgae which are tiny organisms that use photosynthesis to absorb CO₂ and release oxygen.
A natural process, redesigned for modern spaces.
Less filtering. More biology. Cleaner air, powered by nature.
Our Green Solutions
Key Projects
Gammon Construction Limited, Hong Kong
Hong Kong Metropolitan University
JEB Group
The ISF Academy, Hong Kong
AlGreen featured in the headlines!
Check out our feature in the esteemed South China Morning Post and discover how AlGreen's innovative microalgae technology is revolutionizing indoor greenspaces. Click to read more about our cutting-edge solutions developed iin Hong Kong, for the world
Impact Through Innovation
We enhance health through cleaner air powered by natural innovation, making cities greener and more sustainable, improving the climate, one liquid tree at a time. Boosting UN Sustainable Development Goals for better indoor spaces.
Let customers speak for us
We have been using Vayu for the last year at our Osteopathy Clinic and love it, it has improved the air quality, as reflected by the health of the plants of our clinic. Our patients love interacting with it, children ask many questions and are fascinated by the concept. A stylish, useful and environmentally conscious addition to the space, thanks Vayu Team!
Always amazing service with maintenance and deliveries as well!
I rarely write reviews, but I feel this one is genuinely deserved.
I was a Kickstarter backer of the Vayu spirulina algae air purifier, and over the past year I've had a firsthand look not just at the product, but at the people behind it. While the concept itself is fascinating, what has truly stood out to me is their level of customer support.
When I initially had trouble getting my spirulina culture established, I expected maybe a generic troubleshooting email or a link to a FAQ page. Instead, I received thoughtful, detailed guidance tailored to my setup. It didn't stop there, over time they've revised and updated their recommend best practices based on feedback and have given me additional tips, helping me refine things over time.
Over the last year, every interaction I've had with their team has been prompt, helpful, and genuinely invested in my success with their product. They go far beyond what I would expect from a company creating a product like this, especially one that started on Kickstarter. It's clear they stand behind what they've built and care deeply about their customers' experience.
In a world where "support" often feels automated or transactional, Vayu is the opposite. If you're considering one of their systems, know that you're not just buying a product, you're getting a team that's committed to helping you make it work.
That kind of support is rare, and it absolutely deserves recognition.
Enjoyed unboxing the product and having nature in the house. It has a fresh soothing presence and grows quickly in my polluted city. Instruction manual is clear and definitely a great gift.
Been using this for a little under a month, and my smart watch tells me that I have been sleeping better!! Infact, this is the first time my sleep score goes over 90~
Love this so much, we now have one Vayu in every room, then one for each extended family member too ✅️✅️✅️
Thank you Vayu and can't wait for our refill~
