Skip links


Soletair Power develops tailor-made carbon capture systems for effective CO2 removal utilizing building-retrofittable direct air capture technology.


Outdoor CO2 Capture Unit

HVAC Systems

Building Ventilation Integrated CO2 Capture System


Indoor CO2 Filtering Air Purifier

Our modular HVAC-integrated CO2 Capture Units make buildings capture CO2 from the air, reduce carbon emissions onsite, save on ventilation energy costs, score LEED & WELL points, promote circularity, and ease ESG compliance with emission legislations like LL97, 45Q & EPBD.

The retrofit adds no extra noise and captures CO2 at ambient airflow rates, making them ideal for integrating within urban infrastructures like buildings, shopping malls, or data centers.

Why integrate CO2 capture?

  1. Reduce the building’s overall carbon footprint.
  2. Improve the air quality inside the building by reducing the amount of CO2 in the air.
  3. Increase energy efficiency by reducing the amount of energy needed to maintain ventilation in the building.
  4. Reduce the carbon tax and emission penalties resulting from the building’s overall carbon footprint.
  5. Help reduce global warming by reducing the amount of CO2 in the atmosphere.

CO2 removal products with Direct Air Capture technology

a. Outdoor CO2 Capture Unit for large-scale carbon capture and utilization
b. Building Ventilation Integrated CO2 Capture System for reducing emissions, improving well-being and recycling CO2
c. Indoor CO2 Filtering Air Purifier for getting lean CO2 air enhancing productivity & wellbeing

Making buildings net-zero.

Easily retrofit building’s existing HVAC system with our HVAC Integrated Building CO2 Capture Unit for reducing net emissions as well as improving indoor air quality. Tailor-made systems will be made according to your building’s architectural design and based on CO2‘s volume, purity, and energy-consumption requirement.

  • Use: Commercial product
  • Dimensions: 3 m x 3 m x 3 m (lxbxh) (with 3.3 m3/s air)
  • Carbon capture capacity: 50 kg/day (with 3.3 m3/s air)
  • CO2 storage capability: YES
  • Purity of desorbed CO2: 98-99%
  • Regeneration temperature: Below 100°C
  • Installation time: 3 months
  • BMS control:  Siemens SIMATIC HMI PLC
  • LCA and CO2 footprint: Available upon request

Mockup of Soletair Power Building HVAC integrated CO2 Capture Unit placed inside a building

High volume CO2 capture outdoors.

Plug-n-play modular outdoor CO2 capturing device that is easy to install on-site for high volume CO2 capture from the air.

  • Use: Commercial project for high-volume CO2 capture
  • Carbon capture capability: YES
  • Carbon storage capability: YES
  • Fuel Production: NO
  • Power requirement: 400 VAC
  • Carbon capture capacity: 21 kg/day (with each container)
  • Dimensions: 2.5 m x 2.8 m x 12 m (l x b x h)
  • Regeneration temperature:  Below 100°C
  • Purity of desorbed CO2: 99.99%
  • Delivery period: 12 months
  • Installation time: 1 day
  • Control area:  Siemens SIMATIC HMI Panels

A rendered output

No more yawning during meetings!

This is an indoor air quality and productivity booster that enhances human cognitive scores and decision-making skills by temporarily capturing and locking in the room’s CO2 during specific hours. This unit has a built-in self-cleaning module.

  • Use: Consumer product for indoor environments
  • Power requirement: 230 VAC
  • Carbon capture capacity: 1 kg/day (temporary)
  • Dimensions: 0.4 m x 0.4 m x 1.5 m (l x b x h)
  • Weight: 50 kg
  • Installation time: 10 minutes
  • Control area: 7″ RGB touchscreen display

Indoor CO2 filtering Air Purifier Unit Soletair Power landscape

Fuel from thin air.

This compact unit has a carbon capture and fuel production module built in. The World’s first public demonstration of making fuel from thin air was done with this unit at the Finland pavilion of Expo 2020, Dubai, United Arab Emirates.

  • Use: Demonstration product for Expo 2020 Dubai
  • Dimensions: 5 m x 1.2 m x 3 m (l x b x h)
  • Carbon storage capability: YES (Gas)
  • Fuel Production: YES (synthetic methane)
  • Fuel production capacity: 0.5 kg synthetic methane/day.
  • Carbon capture capacity: 1.5 kg/day
  • Purity of desorbed CO2: 99.7 %
  • Delivery period: 9-12 months
  • Installation time: 2 hours
  • Control area: Siemens SIMATIC HMI Panels

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

Is it in the air?

Desktop CO2 monitor that tells you the level of carbon dioxide gas in the room as well the potential impact on cognitive function scores.

  • Use: Consumer product
  • Power requirement: 5 V DC
  • Dimensions: 19 cm x 5 cm x 12 cm (l x b x h)
  • Weight: 200 gm
  • Installation time: 2 minutes
  • Control area: 7″ RGB touchscreen display

Soletair Power Indoor CO2 monitor Unit for desktop

Outdoor Carbon Capture Unit

CO2 removal machine

The outdoor CO₂ Capture Unit from Soletair Power is capturing atmospheric CO₂ at ZBT, Germany.

Outdoor CO₂ Capture & Utilization Unit

For industrial emitters and for those needing CO2 in the purest form as a product, our system captures CO2 outdoors as well.


CO2 is decreased from the atmosphere and this has a direct positive impact on stopping climate change.

In operation

This machine’s CO2 capturing efficiency has been tested and it is now fully operational at ZBT in Germany.

Technical Specifications

Building Ventilation Integrated Carbon Capture Unit

soletair power HVAC unit in a room

Our HVAC-DAC integrated system can easily be retrofitted with buildings existing HVAC.

Building Ventilation Integrated CO2 Capture System

Our indoor DAC system can easily be integrated into buildings with the HVAC system for capturing CO2 in air supplied to building ventilation. For a standard ventilation unit handling 3.3 m3 / s our CO2 capture system will have a dimension of 3 m (L), 3 m (W), and 3 m (H) and can produce 47 kilograms of carbon dioxide per day. Due to the space limitation in the HVAC room, the system’s piping, and dimension can also be modified to fit the customer’s specifications.


Reach net zero by operating in a building that captures CO2 from the air, reduces carbon emissions onsite. Integration saves on ventilation energy costs, scores LEED & WELL points, promotes circularity, and eases ESG compliance with emission legislations like LL97, 45Q, EPBD, CSRD reportings, SBTi net zero and more.

Market availability

Building HVAC-Integrated CO2 Capture unit has been installed in the Wärtsilä Sustainable Technology Hub, Vaasa, Finland. Another has been installed in a factory in Vantaa, Finland. The next one is being installed in a net negative building in Aarhus, Denmark.

Technical Specifications

Indoor Carbon Dioxide Filtering Air Purifier

a device from Soletair Power that captures CO2 in offices

Indoor-CO₂-Filtering Air Purifier set up at our office room.

Indoor CO₂ Filtering Air Purifier Unit

No more sleeping in meetings! This standalone device can operate in small office rooms and capture CO2 for around 8-10 hours. Unlike our other CO2 capture units, this is made like an Air Purifier unit. It does not capture the CO2 permanently but rather releases that after regular office hours.


Building residents enjoy improved wellbeing, enhanced productivity, and CO2-lean air in the office. The captured CO2 is released back into the air at night or at a time when nobody is working.

Market availability

This demo device is already fully functional. We are working on escalating the efficiency every day. Pre-orders can be made from:

Technical Specifications Room CO2 Calculator

Ready to remove CO2?

Send a Message