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Turning Buildings into Carbon Sinks.

Soletair Power is pioneering ventilation integrated carbon dioxide capture technology suitable for integration within urban infrastructures. The technology enables buildings to capture CO2 from the air at ambient airflow rates and at a temperature less than 100 °C.

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We engineer scalable, modular decarbonization systems that helps industries capture carbon dioxide from the air.


tCO2 /y/building


% CO2 purity


Cost savings


Projects in 5 years

Carbon minus⁻

Run on renewables, captures more CO2 than it emits.


Easily retrofits with the existing HVAC system.


Supplies CO2-lean air leading to better indoor air quality.


CO2 mineralization enables long-term storage.

Helping buildings decarbonize.

Buildings, responsible for about 40% of global greenhouse gas emissions, can be turned into carbon sinks by making them capture CO2.
Soletair Power’s patented Building-HVAC-Integrated CO2 Capture Technology is developed for buildings and does not require high temperatures or specific geography. Atmospheric CO2 is captured from the air by utilizing the existing HVAC system. Captured CO2 when mineralized into concrete, returns to another building in the form of concrete blocks, closes the cycle, and creates negative emissions.
Mockup of Soletair Power Building HVAC integrated CO2 Capture Unit placed inside a building
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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 onsite and transform buildings into carbon capturing machines.

Soletair Power HVAC integrated DAC integrations are enabling buildings around the world to capture tons of CO2 from the air everyday.

Case: Power-to-X
Case: Outdoor CO2
Case: HVAC CO2
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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.


Soletair Power CO2 capture systems are tailor-made to fit into most HVAC facilities, thanks to the modular design principle we follow.

View our products

Outdoor CO2 Capture Unit


Building-HVAC Integrated CO2 Capture


Indoor CO2 Filtering Air Purifier