Heirloom Employee Directory

Environmental ServicesCalifornia, United States51-200 Employees

Heirloom is an environmental services company based in San Francisco, California, focused on removing carbon dioxide from the atmosphere. It aims to accelerate limestone's natural uptake of CO2, reducing removal times from years to days, and in 2023 established North America's first facility that permanently captures CO2 through direct air capture. The company's client base includes major carbon-removal buyers such as Microsoft, JP Morgan, McKinsey, Stripe, and Shopify.

Operating in the direct air capture and broader environmental services space, Heirloom seeks scalable, permanent removal solutions for large-scale deployments. A recent development involves a partnership with TKMS Group and thyssenkrupp Calvion to pursue large-scale DAC projects in Alberta, Canada, reflecting its ongoing expansion efforts; the company is headquartered in California and maintains a mid-sized team.

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