Insights

Strong Funding Momentum Heirloom has secured substantial financial backing with a $150 million Series B funding round, demonstrating strong investor confidence and potential for rapid scaling of its direct air capture technology. This financial strength can be leveraged to explore large-scale enterprise partnerships and government collaborations focused on climate initiatives.

Key Customer Base The company's clients include major global corporations such as Microsoft, JP Morgan, Stripe, Shopify, and Japan Airlines, indicating significant market validation. There is an opportunity to expand services to other Fortune 500 companies committed to net-zero targets and environmental sustainability.

Strategic Expansion Recent investments of over $1 billion into new assets and facilities in Caddo-Bossier highlight Heirloom’s aggressive growth strategy. This expansion presents a chance to promote offerings related to carbon removal technology to organizations seeking to offset emissions at a large scale.

Innovative Technology Heirloom's rapid CO2 absorption process, reducing limestone absorption time from years to days, positions it as a leader in cost-effective carbon capture. This unique technology can appeal to industries with high emission footprints, such as manufacturing, aviation, and energy, seeking sustainable solutions.

Market Leadership & Trend As the first and only operational Direct Air Capture facility in North America that permanently captures CO2, Heirloom is at the forefront of a growing industry trend. Targeting environmental agencies and ESG-focused investors could unlock opportunities for government grants, incentives, and sustainable finance collaborations.

Heirloom Tech Stack

Heirloom uses 8 technology products and services including Varnish, GitHub, SCADA, and more. Explore Heirloom's tech stack below.

  • Varnish
    Caching
  • GitHub
    Communication And Collaboration
  • SCADA
    Control Systems
  • Svelte
    Javascript Frameworks
  • Lenis
    Javascript Libraries
  • UPS
    Logistics
  • OneSignal
    Marketing Automation
  • Microsoft
    Miscellaneous

Media & News

Heirloom's Email Address Formats

Heirloom uses at least 1 format(s):
Heirloom Email FormatsExamplePercentage
First@heirloomcarbon.comJohn@heirloomcarbon.com
96%
FirstLast@heirloomcarbon.comJohnDoe@heirloomcarbon.com
1%
Last@heirloomcarbon.comDoe@heirloomcarbon.com
2%
LFirst@heirloomcarbon.comDJohn@heirloomcarbon.com
1%

Frequently Asked Questions

Where is Heirloom's headquarters located?

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Heirloom's main headquarters is located at San Francisco, CA US. The company has employees across 6 continents, including North AmericaAsiaEurope.

What is Heirloom's stock symbol?

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Heirloom is a publicly traded company; the company's stock symbol is N/A.

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 LinkedInCrunchbase.

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 October 2025, Heirloom has approximately 180 employees across 6 continents, including North AmericaAsiaEurope. Key team members include Chief Of Staff: C. C.Head Of Strategic Initiatives: A. S.Head Of Technology: A. D.. 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 VarnishGitHubSCADASvelteLenisUPSOneSignalMicrosoft.

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.

When was Heirloom founded?

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Heirloom was founded in 2020.

Heirloom

Environmental ServicesCalifornia, United States51-200 Employees

Mitigating the worst impacts of climate change by developing the world’s most cost-effective DAC technology to permanently remove CO2 from the atmosphere.

Our technology rapidly accelerates the natural processes that enable limestone to absorb carbon dioxide from the air from a timespan of years to days.

In 2023, Heirloom established the first and only Direct Air Capture facility in North America that permanently captures CO2. Our customers are the world’s biggest buyers of carbon removal including Microsoft, JP Morgan, McKinsey, Stripe, Shopify and more.

Section iconCompany Overview

Headquarters
San Francisco, CA US
Stock Symbol
N/A
NAICS Code
54162 - Environmental Consulting Services
Founded
2020
Employees
51-200

Section iconFunding & Financials

  • $100M$250M

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

Section iconFunding & Financials

  • $100M$250M

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

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