Heirloom, a direct air capture company permanently removing CO2 from the atmosphere, has raised $53MM in a Series A funding round co-led by Carbon Direct Capital Management, Ahren Innovation Capital, and Breakthrough Energy Ventures, with The Microsoft Climate Innovation Fund as an additional participant.

Heirloom's mission is to remove 1 billion tons of CO2 from the atmosphere by 2035. Founded in 2020 by repeat entrepreneurs and invented by the world's leading experts in carbon dioxide removal, their technology enhances natural processes to help minerals absorb CO2 from ambient air in days rather than years.