greenwaterHOME: world's first indoor

Air Synthesizer

Let's Bring Oxygen Back

The photosynthetic power of micro-algae

Bought Indoors

Explore greenwaterHOME

Recommended by doctors, coaches, and wellness professionals.

Not an air purifier.

Something Entirely New

The modern room must have fresh air, built-in.

Today, comfort often means sealed rooms, air conditioning, and long hours indoors. The result is a space that may look clean, but does not always feel fresh.

The reason is largely invisible: as a room fills with people and stays sealed, CO₂ builds up quietly — and the air that felt fresh in the morning feels heavier by the afternoon.

And while outdoor pollution gets most of the attention, indoor spaces often feel less fresh for a different reason: there is less exchange with the outside air, and more of the same air being breathed again and again.

Most solutions focus on what is floating in the air. Very few address what the air is becoming.

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Cleaning the air is not the same as refreshing it.

Traditional air purifiers play an important role: they help reduce particulate matter and certain airborne pollutants.

But in sealed, occupied spaces, freshness is not only about what can be filtered out. It is also about the changing composition of the air itself.

That is why solving indoor air quality requires more than filtration alone.

Traditional Air Purifier

Filters what is already in the air.
  • Helps reduce particulate matter
  • Helps with certain VOCs
  • Focuses on filtration
  • Works on what is already present in the air

Air Synthesizer

Filters, decarbonizes, and oxygenates the air
  • Addresses the molecular side of indoor air
  • Helps reduce indoor CO₂ buildup
  • Helps increase oxygen availability
  • Goes beyond filtration alone

Meet the world's first indoor Air Synthesizer.

greenwaterHOME is designed for air-conditioned spaces where filtration alone is not enough. It combines 3-step filtration with the photosynthetic power of micro-algae to help reduce indoor CO₂ buildup and increase oxygen availability bringing freshness back to modern rooms.

1. Filtration

Dust, smoke, VOCs — caught and cleared before anything else happens through a 3-step filtration system.

2. Decarbonization

The filtered air passes through a living micro-algae culture. The algae do what algae do: absorb CO₂ in sealed spaces.

3. Oxygenation

Through photosynthesis, the algae release fresh oxygen back into your room. The same process as a forest, scaled to fit your space.

32% less CO₂ per hour.

In a fully sealed and insulated 8×8×8 ft room starting above 3000 ppm CO₂, greenwaterHOME showed an average CO₂ reduction rate of 32% per hour ±3%.

The test used two CO₂ monitors, with readings taken every 15 minutes for 4 hours, with the test repeated every day for 30 days.

*Results vary by room size, sealing, occupancy, ventilation, and operating conditions.

A pediatrician's verdict, after 30 days.

I have been using this product in my clinic for over a month and have seen a meaningful improvement in how the space feels. People feel fresher after coming here, and I believe this machine can help many children and parents.

Dr (Prof) Suresh Gupta

Pediatrician · Allergy & Asthma Specialist

30+ years of experience

Recognized by leading institutions and programs

View Full List of Awards & Honors

Bring freshness back to modern rooms

greenwaterHOME is the world's first indoor Air Synthesizer designed for sealed, air-conditioned spaces.

It combines filtration, decarbonization, and oxygenation in one premium indoor air system.

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Have questions? Chat with us on WhatsApp

Scientists love to talk about their research. We reply very quickly.

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