Direct air capture startup using limestone to remove CO2 from the atmosphere at scale.
About
Heirloom is a direct air capture (DAC) company that removes CO2 from the atmosphere using crushed limestone, which naturally absorbs carbon dioxide. Unlike liquid-based DAC approaches, Heirloom's mineral-based process is lower-cost and faster to scale. The company operated America's first commercial DAC plant and raised $150M Series B in December 2024 co-led by Future Positive and Lowercarbon Capital.
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100
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Frequently Asked Questions
What does Heirloom do?
Heirloom is a direct air capture (DAC) company that removes CO2 from the atmosphere using crushed limestone, which naturally absorbs carbon dioxide. Unlike liquid-based DAC approaches, Heirloom's mineral-based process is lower-cost and faster to scale. The company operated America's first commercial DAC plant and raised $150M Series B in December 2024 co-led by Future Positive and Lowercarbon Capital.
How much funding has Heirloom raised?
Heirloom has raised a total of $162M in funding. The most recent round on record is Series B.
Where is Heirloom headquartered?
Heirloom is headquartered in Brisbane, California, United States.
When was Heirloom founded?
Heirloom was founded in 2020.
What industry does Heirloom operate in?
Heirloom operates in Climate Tech, Carbon Removal, Direct Air Capture, Cleantech, Carbon Credits, Deep Tech.
How many employees does Heirloom have?
Heirloom has approximately 100 people on record.
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