About Heirloom
Heirloom is an Environment company based in San Francisco (United States) founded in 2020 by Noah McQueen, Shashank Samala, and Zack Bloom. Carbon dioxide is removed from the atmosphere using limestone technology. It operates on a Green Energy-as-a-Service model. Heirloom has raised $203 million across 7 funding rounds from investors including Microsoft, Mitsui & Co and Siemens. The company has 110 employees. Its chief executive, as recorded, is Shashank Samala. Its website heirloomcarbon.com draws about 11 thousand monthly visits. Heirloom offers products and services including Direct Air Capture. Its focus areas include Energy, Renewable Energy and Carbon Capture and Storage. Its legal entity is Heirloom Carbon Technologies. Its competitors include Sustaera and Susteon; 1 of its 2 listed competitors has raised funding.
Company details
Heirloom Carbon Technologies is focused on removing carbon dioxide from the atmosphere by leveraging limestones natural properties through an accelerated carbon mineralization process. Direct Air Capture facilities are operated in the United States, with significant projects in Northwestern Louisiana and the Central Valley of California. Solutions are designed to be low-cost, verifiable, and permanent, contributing to climate change mitigation. Community benefits are prioritized, with investments in jobs and education alongside environmental goals. The sector of operation includes renewable energy and carbon capture technologies.
- Headquarters San Francisco, United States
- Employees 110
- Founders Noah McQueen, Shashank Samala, Zack Bloom
- SectorsEnvironment
- Email••••••••
- Website heirloomcarbon.com
- Social LinkedIn X
- Legal Name Heirloom Carbon Technologies
- Total Equity Funding$203M (USD)
in 7 rounds
- InvestorsMicrosoft
& 21 more
- Employee Count110
Products & Services of Heirloom
Heirloom offers a comprehensive portfolio of products and services, including Direct Air Capture.
CO2 is removed permanently using limestone-based technology.
Funding Insights of Heirloom
Heirloom has successfully raised a total of $203M across 7 strategic funding rounds. This substantial capital infusion reflects strong investor confidence in the company's business model, growth potential, and market opportunities. The funding enables strategic expansion, product development, market penetration, and operational scaling to drive long-term value creation and competitive advantage.
- Total Funding $203M
- Total Rounds 7
- Investors Count 22
All 7 funding rounds of Heirloom with amounts and investors; the two latest post-money valuations are shown, the rest are part of the premium plan.
| Date | Amount | Transaction Name | Valuation | Lead Investors | Investors |
|---|---|---|---|---|---|
| Feb 2025 | Series B | – | – | ||
| Dec 2024 | $150M | Series B | – | Future Positive Capital | |
| Mar 2022 | $53M | Series A | – | Ahren, Breakthrough Energy | |
| Sep 2021 | $476,811 | Grant | – | – | |
| Jul 2021 | $255,737 | Grant | – | – | |
| Jun 2021 | Grant | – | – | ||
| May 2021 | Seed | – | Lowercarbon Capital, Energy Ventures | – |
22 investors in total: 22 institutional.
Investors in Heirloom
Heirloom has secured backing from 22 investors, including institutional and venture fund investors. Prominent investors backing the company include Microsoft, Mitsui & Co and Siemens.
| Investor | Description | Founded Year | Domain | Location |
|---|---|---|---|---|
Venture capital investments are made in innovative, future-oriented companies. | futurepositivecapital.com | |||
Venture capital fund focused on tech startups | lowercarboncapital.com | New York, United States | ||
A corporate venture capital firm focused on decarbonization technologies. | molswitch.earth | Palo Alto, USA | ||
| qif.vc | ||||
Investment in deep technology and science is facilitated. | 2017 | ahreninnovationcapital.com | ||
Climate solutions are advanced via venture capital and startup acceleration. | breakthroughenergy.org | Kirkland, United States | ||
Carbon Direct Capital is focused on investing in carbon management companies. | carbondirectcapital.com | New York, United States | ||
Venture capital fund focused on investing in technology startups | sevensevensix.com | Austin, United States | ||
Technical teams are supported by Breyer Labs through investments. | breyerlabs.com | Menlo Park, United States | ||
| timevc.capital |
Investor details for Heirloom
The complete investor list, round-by-round participation and investor portfolios require an active premium plan.
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People of Heirloom
52 people are tracked at Heirloom (13 in leadership, 39 in team); the tracked headcount is 110.
| Name | Role | Group |
|---|---|---|
Noah McQueen | Co-Founder | Leadership |
Shashank Samala | Co-Founder & CEO | Leadership |
Zack Bloom | Co-Founder | Leadership |
Albert Luu | Head of Finance | Leadership |
Vikrum Aiyer | Head of Global Public Policy & External Affairs | Leadership |
Nishad Pai | Vp, Head Of Business Development And Partnerships | Leadership |
Caitlin Cain | Head Of Public Affairs, Gulf Coast | Leadership |
Andy Dubel | Head Of Technology | Leadership |
Max Scholten | Head of Commercialization | Leadership |
Liz Qually | Head Of Legal | Leadership |
Candice Chow-Gamboa | Chief Of Staff | Leadership |
Matt Barnard | Strategic Advisor to the Founder | Leadership |
Christian Theuer | Director Of Policy & External Affairs | Leadership |
Robert Sciog | Senior Electrical Engineer | Team |
Gerard Frigola Blázquez, PMP | Sr Project Engineer | Team |
Mark Cuson | Systems Engineer | Team |
Patrick de Jesus | R&d | Team |
Xingzhu Wu, PhD | Senior Process Development Engineer | Team |
Akshay Siramdas | Research Engineer | Team |
Allison MacLellan | Senior Mechanical Engineer | Team |
32 more people are available in the full profile.
Complete people profiles for Heirloom
Full employee and board profiles, team structure, tenure and professional contact details require an active premium plan.
- Full employee list
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Timeline of Heirloom
3 dated milestones of Heirloom across 5 years, from founding to its latest funding, stage changes and deals.
- Founded Heirloom is founded.
- Funding First funding round.
- Funding Latest funding round, Series B,.
Competitors of Heirloom
Heirloom has 2 listed competitors in our database, 1 of them funded. They include Sustaera and Susteon.
| Company Name | Domain | Founded | HQ Location | Total funding | Employees | Description |
|---|---|---|---|---|---|---|
| sustaera.com | 2021 | Durham, United States | $11.46M | Developer of renewable energy-powered direct air carbon capture technology | ||
| susteon.com | 2017 | Cary, United States | Technology solution for decarbonization |
Detailed competitors of Heirloom
The full competitor set, operating metrics and side-by-side benchmarks require an active premium plan.
- Full competitor set
- Operating metrics
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Verified entity values are shown only after access is granted.
Web traffic of Heirloom
The website of Heirloom (heirloomcarbon.com) receives about 11K visits a month.
- Monthly visits11K
▲ 3.3% vs previous month
Websites whose visitors overlap most with Heirloom. Affinity shows how closely the audiences match.
| Website | Domain | Audience affinity | Monthly visits | Global rank | Profile |
|---|---|---|---|---|---|
| gosupercritical.com | 100% | 13.2K | #1,237,072 | View details | |
heirloom-eats.com | heirloom-eats.com | 51% | #1,614,600 | – | |
heirloom-raleigh.com | heirloom-raleigh.com | 47% | #2,384,285 | – | |
rentwithheirloom.com | rentwithheirloom.com | 40% | #6,666,648 | – | |
heirloomvb.com | heirloomvb.com | 38% | #2,096,170 | – | |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
| •••••••••• | ••••••.com | ••% | •.•M | #••••• | – |
All 7 similar websites and full traffic analytics for Heirloom
The complete similar-websites list, audience overlap and engagement analytics require an active premium plan.
- 7 similar websites
- Audience overlap
- Engagement analytics
- Traffic by brand
Verified entity values are shown only after access is granted.
Top companies in Pollution & Air Quality Systems
3 companies that operate in the same segment as Heirloom (Pollution & Air Quality Systems) in United States, ranked by their profile score on The Company Check.
| Company | Description | Founded | Location | Total funding | Revenue | Employees |
|---|---|---|---|---|---|---|
Platform for enterprise sustainability measurement, reporting, and action is provided. | 2019 | San Francisco, California, United States | USD 184.96 M | 647 | ||
Weather intelligence and forecasting solutions are provided for industries. | 2016 | Boston, Massachusetts, United States | USD 425 M | 229 | ||
Carbon dioxide is converted into products via renewable energy technology. | 2015 | Berkeley, California, United States | USD 472.37 M |
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Related news about Heirloom
Complete news archive for Heirloom
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Frequently Asked Questions about Heirloom
Heirloom was founded in 2020 and raised its 1st funding round 1 year after it was founded.
Heirloom is headquartered in San Francisco, United States. It is registered at San Francisco, California, United States.
Shashank Samala is the CEO of Heirloom, as recorded in our data. They have also founded this company.
Heirloom is a funded company, having raised a total of $203M across 7 funding rounds to date.
Heirloom has 110 employees.
Heirloom Carbon Technologies is focused on removing carbon dioxide from the atmosphere by leveraging limestones natural properties through an accelerated carbon mineralization process. Direct Air Capture facilities are operated in the United States, with significant projects in Northwestern Louisiana and the Central Valley of California. Solutions are designed to be low-cost, verifiable, and permanent, contributing to climate change mitigation. Community benefits are prioritized, with investments in jobs and education alongside environmental goals. The sector of operation includes renewable energy and carbon capture technologies.
Heirloom offers Direct Air Capture.
Heirloom has 22 investors. Key investors include Microsoft, Mitsui & Co, Siemens, United Airlines, and Japan Airlines.
Heirloom operates through Heirloom Carbon Technologies.