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Turning buildings into carbon sinks

With six systems already deployed, we’re aiming to scale up carbon capture with our distributed Direct Air Capture systems across the globe. Our modular Building HVAC-integrated CO2 Capture Units capture CO2 from the air, reduce carbon emissions onsite, save on energy costs, earn LEED & WELL points, and ease ESG compliance with emission legislations like LL97, 45Q & EPBD.

Our modules add no extra noise and capture CO2 even at ambient airflow rates, making them ideal for integrating within urban infrastructures like buildings, shopping malls, or data centers.

Soletair Power Power to X demo unit for Expo 2020 Dubai outline png

Energy Efficiency + Renewables + Onsite Carbon Removal = Carbon Negative Buildings

We engineer decarbonization systems


tCO2 /y/10 setups


% CO2 purity


Projects in pipeline


Projects in 5 years

Robust carbon capture technology from Finland

Carbon minus⁻

When run on renewable, the system captures more CO2 than it emits.


Seamlessly retrofits with the existing HVAC system.


Supplies CO2-lean air leading to more productivity at work.

Permanent storage

CO2 mineralization in concrete enables long-term storage.

We help decarbonize real estate

Shifting to renewables is allowing the world to reduce emissions across many parts of the economy. However, Real Estate emissions remain difficult to avoid. Buildings, responsible for 38% of global emissions, can be turned into carbon sinks by making them capture CO2.
Our patented Building-HVAC-Integrated CO2 Capture Technology is uniquely developed for installation inside or near buildings and does not need high temperatures or specific geography. CO2 is captured throughout the year by utilizing buildings’ existing HVAC systems and the residents enjoy CO2-lean air. Captured CO2 returns to the building in the form of concrete blocks and creates negative emissions.

A carbon sink is a reservoir that stores carbon dioxide permanently after capturing it from the atmosphere.

Direct air capture (DAC) is a technology that uses chemical materials to capture carbon dioxide from the atmosphere. When air is moved over these materials, they selectively capture the CO2, allowing the other components of air to pass through.

One of the biggest benefits of direct air capture is siting flexibility. DAC does not require arable land, which can minimize impacts on food production or other land uses. DAC is needed alongside plantations because planting a trillion extra trees will remove only a quarter of the CO2 currently in the air (Ref: BBC). DAC also has a limited land and water footprint and can be installed in places close to suitable CO2 storages, thus eliminating the need for CO2 transport.

High concentration of CO2 in the air indoors has a direct influence on how people think (Ref: Harvard University). The standard indoor CO2 level is expected to stay between 450 and 600 ppm, which is slightly above the normal levels in outdoor air (414 ppm). From 1,000 ppm, room occupiers start to feel dissatisfied and with every 400 ppm increase in CO2 concentration, our cognitive function score drops by 20%. CO2 undercuts our ability to perform in thought works at full potential.

Soletair Power’s technology is the first in the world to integrate atmospheric carbon removal utilizing ventilation systems in buildings. Soletair Power’s modules produce no additional noise and can capture CO2 even at a very low airflow rate, making it ideal for installing in buildings.

In addition to offsetting a building’s CO2 emissions, HVAC-DAC integration can reduce HVAC’s operational costs, and supply better air indoors. This also brings in the potential to create a localized supply of alternative energy sources.

For a standard ventilation unit handling 3.3 m3/s, our Building-HVAC-Integrated CO2 Capture Unit can capture 47 kilograms of carbon dioxide per day per module. On average, there are six modules per building. So it’s around 300 kg/day or 90 tonnes/year from each average commercial building.

Capture CO2 with your own device onsite.

Multiple systems from Soletair Power are already enabling buildings around the world to capture CO2 from the air with novel Direct Air Capture technology.

Case study: P2X Unit
Case study: Outdoor Unit
Case study: HVAC Unit
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Building-integrated CO2 capture and CO2-to-X project - DAC unit 2.0

Will be retrofitted inside a factory where CO2 will be captured and converted into a novel product.


Our modular CO2 capture systems are tailor-made to fit into any HVAC room or compact space. Soletair Power’s technology is now at TRL 8-9. We can give you a product delivery date, today.

View our products

Outdoor CO2 Capture Unit


Building-HVAC Integrated CO2 Capture


Indoor CO2 Filtering Air Purifier

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