H
Heirloom Carbon
Removing 1B tons of CO2 from the air by 2035 by engineering the most cost-effective, scalable direct air capture system
About Heirloom Carbon
Heirloom Carbon is a pioneering startup in the environmental technology sector, focusing on the reduction of atmospheric carbon dioxide (CO2) levels. The company's primary service is the development and deployment of Direct Air Capture technology, a process that extracts CO2 directly from the atmosphere. This technology leverages the natural carbon-absorbing properties of limestone, one of the most abundant rocks on the planet, to accelerate the process of carbon mineralization, transforming CO2 into rock in a matter of days.
Heirloom Carbon's business model revolves around the sale of carbon removal credits, a market-based tool that allows companies to offset their carbon emissions. These credits represent the permanent removal and safe storage of CO2, either underground or within building materials like concrete. The company's first commercial facility, established in 2020, serves as a testament to their rapid technological and business progress.
The startup operates in the growing carbon credit market, catering to environmentally conscious businesses seeking to reduce their carbon footprint. By offering carbon removal credits at a cost of less than $100 per ton of CO2 by 2035, Heirloom Carbon positions itself as an affordable solution for companies aiming to achieve carbon neutrality.
In addition to its environmental impact, Heirloom Carbon also contributes to the green economy by creating high-paying jobs in the environmental technology sector. The company's operations align with principles for responsible carbon removal, ensuring minimal environmental footprint.
Source: Dealroom company dataAt a glance
- Status
- Operational
- Founded
- 2020
- Headquarters
- Brisbane, United States
- Employees
- 167
- Open positions
- 1
- Dealroom signal
- 64.0/100
- Industry
- Energy
- Sector
- Energy, Sustainable Development Goals, Carbon Capture and Storage, Climate Tech, Direct Air Capture, Carbon Removal, Hard Tech, DT and LS, science-based
- Technology
- Hardware, Deep Tech
- Business model
- Manufacturing
- Client focus
- b2b
Knowledge graph
More headlines
Funding history
Company financing events and reported valuations.
| Deal type | Date | Amount | Valuation | Investors | Source |
|---|---|---|---|---|---|
| SERIES BOther financing | Dec 2024 | $150M | $600M | H&M · Mitsubishi · Breakthrough Energy Ventures · Ahren Innovation Capital | ↗ |
| SERIES AOther financing | Mar 2022 | $53M | $212M | Breakthrough Energy Ventures · Microsoft Climate Innovation Fund · Carbon Direct · Bill Gates | ↗ |
Growth signals
Latest recorded traffic for Heirloom Carbon is 3.5K monthly website visits, down 61.5% over the last three months. Heirloom Carbon's team declined 7.2% over the past year.
Open positions
Similar companies
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Investments and acquisitions
Recent portfolio relationships for companies that also act as investors or acquirers.
Investors
From Dealroom's funding and investor records, grouped by the round each investor first entered.
Seed5 investors entered at this stage
US National Science Foundation
Lowercarbon Capital
Prelude Ventures
Breakthrough Energy Ventures
MCJ Collective
Series A14 investors entered at this stage
Carbon Direct
Ahren Innovation Capital- MFMicrosoft Climate Innovation Fund
Bill Gates
Future Positive Capital
H&M
Mitsubishi
Carbon Direct Capital Management- QFQuantum Innovation Fund
Mitsui
Siemens Financial Services
Japan Airlines (JAL)
United Airlines Venture
MOL Switch
Source: Dealroom Talent Intelligence.
Global footprint
team presence
Market sentiment
An AI-synthesised read of the highest-engagement posts about Heirloom Carbon on X, ranked by likes and reposts, corporate channels excluded.
Reading the room on X — pulling top posts and synthesizing themes…
Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour
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