Insights

Strategic DAC Partners Heirloom operates North America’s first permanent Direct Air Capture facility and has secured high-profile customers including Microsoft, JPMorgan, Meta, Shopify, H&M, and Autodesk, indicating strong enterprise demand for scalable carbon removal solutions.

Large-Scale Capacity With major plant investments and multi-hundred-million dollar funding rounds, Heirloom demonstrates the ability to scale quickly, presenting opportunities to engage strategic buyers seeking long-term, high-volume CO2 removal commitments.

Financial Readiness Revenue in the multi-tens of millions range and substantial funding indicate financial strength and credibility, enabling sales conversations around enterprise-grade contracts, financing options, and risk sharing for large deployments.

Strategic Partnerships Recent MoUs with TKMS Group and thyssenkrupp Calvion for collaboration on large-scale removal in Canada signal a pathway for regional expansion and channel partnerships that can broaden sales reach.

Technology & Compliance A tech stack spanning AWS, DBT, PostgreSQL, and NetSuite plus a time-critical carbon removal proposition positions Heirloom as a data-driven partner for sustainability programs, regulatory reporting, and audit-ready carbon credits.

Similar companies to Heirloom

Heirloom Tech Stack

Heirloom uses 8 technology products and services including Grafana, LinkedIn Recruiter, Amazon Web Services, and more. Explore Heirloom's tech stack below.

Media & News

Heirloom's Email Address Formats

Heirloom uses at least 4 email formats:
Heirloom Email FormatsExamplePercentage
First@heirloomcarbon.comJohn@heirloomcarbon.com
96%
FirstLast@heirloomcarbon.comJohnDoe@heirloomcarbon.com
2%
Last@heirloomcarbon.comDoe@heirloomcarbon.com
1%
LFirst@heirloomcarbon.comDJohn@heirloomcarbon.com
1%

Frequently Asked Questions

What is Heirloom's official website and social media links?

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Heirloom's official website is heirloomcarbon.com and has social profiles on LinkedIn and Crunchbase.

How much revenue does Heirloom generate?

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As of August 2026, Heirloom's annual revenue is estimated to be $100M - $250M.

What is Heirloom's NAICS code?

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Heirloom's NAICS code is 54162 - Environmental Consulting Services.

How many employees does Heirloom have currently?

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As of August 2026, Heirloom has approximately 156 employees across 4 continents, including North America, Asia and Europe. Key team members include Head Of Strategic Initiatives: A. S., Head Of Strategic Engagement: C. C. and Head Of Legal (general Counsel) & People: L. Q. Explore Heirloom's employee directory with LeadIQ.

What industry does Heirloom belong to?

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Heirloom operates in the Environmental Services industry.

What technology does Heirloom use?

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Heirloom's tech stack includes Grafana, LinkedIn Recruiter, Amazon Web Services, DBT, PostgreSQL, NetSuite, Shopify and Google Workspace.

What is Heirloom's email format?

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Heirloom's email format typically follows the pattern of First@heirloomcarbon.com. Find more Heirloom email formats with LeadIQ.

How much funding has Heirloom raised to date?

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As of August 2026, Heirloom has raised $204M in funding. The last funding round occurred on Mar 25, 2025.

When was Heirloom founded?

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Heirloom was founded in 2020.
Heirloom logo

Heirloom

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.

Section iconCompany Overview

NAICS Code
54162 - Environmental Consulting Services
Founded
2020
Employees
51-200

Section iconFunding & Financials

  • $204M

    Heirloom has raised a total of $204M of funding over 7 rounds. Their latest funding round was raised on Mar 25, 2025 as a Venture Round.

  • $100M - $250M

    Heirloom's revenue is estimated to be in the range of $100M - $250M

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