Climeworks vs Heirloom
Climeworks
Pioneering carbon removal with Direct Air Capture to help businesses reach net-zero and drive economic growth
435 employees · est. 2009
Heirloom
Mitigating the worst impacts of climate change by developing the world’s most cost-effective CO2 removal technology
183 employees · est. 2020 · San Francisco, United States
Climeworks is the older company (2009 vs 2020); Climeworks is the larger of the two.
Side-by-Side Comparison
| Metric | Climeworks | Heirloom |
|---|---|---|
| Founded | ||
| Founded | 2009 older | 2020 |
| Headquarters | ||
| Headquarters | Not tracked yet | San Francisco, United States |
| Employees | ||
| Employees | 435 larger | 183 |
| Industry | ||
| Industry | ESG, Sustainability | Not tracked yet |
| Funding Stage | ||
| Funding Stage | Private Equity | Series B |
| Total Funding | ||
| Total Funding | $895.63M | $204.00M |
| Funding Rounds | ||
| Funding Rounds | 9 | 4 |
| Services | ||
| Services | carbon removal advisory, direct air capture technology, online carbon removal purchase, tailored carbon removal portfolios | Permanent CO2 Removal, Direct Air Capture Facility Development, Advanced Carbon Capture Technology |
| Target Customers | ||
| Target Customers | businesses, individuals, climate-conscious enterprises, organizations aiming for net-zero targets | Businesses Committed to Sustainability, Organizations with Net-Zero Goals, Partners Interested in Climate Solutions |
| Taxonomy | ||
| Taxonomy | Carbon RemovalDirect Air Capture (DAC)Net-Zero StrategiesEngineered SolutionsNature-Based SolutionsCarbon Dioxide Removal +8 | Climate Change MitigationCO2 Removal TechnologyDirect Air CaptureCarbon CaptureLimestone UtilizationPermanent CO2 Storage +5 |
| Website | ||
| Website | climeworks.com | heirloomcarbon.com |
About Climeworks
Climeworks, founded in 2009, is at the forefront of carbon removal through its innovative Direct Air Capture (DAC) technology. With the aim of helping businesses achieve net-zero emissions while driving economic growth, the company combines its decades of expertise with strategic, holistic solutions...
About Heirloom
Heirloom is at the forefront of climate change mitigation, boasting the development of the world's most cost-effective direct air capture (DAC) technology to remove CO2 from the atmosphere. Founded in 2020, this innovative company has drastically condensed the time required for limestone to absorb c...
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Compiled from the BounceWatch company index. We last looked at Climeworks on 20 Oct 2025, and Heirloom on 21 Oct 2025. Where a field is blank here, it means we have not recorded it — not that the answer is zero. How we source and date this.
