Restoring balance to our atmosphere
Leveraging the natural power of limestone to remove 1 billion tons of C02 by 2035 using the world’s most cost-effective Direct Air Capture technology.
Rocks are some of the planet's most vital carbon sinks. Over geological timescales, CO2 from the atmosphere binds to minerals and permanently turns to rock – a process known as carbon mineralization.
Limestone is one of the most abundant rocks on the planet, capturing massive amounts of CO2 from the air over years. Heirloom’s technology accelerates this natural process to just days.
We’ve combined the best of engineering and nature, to develop the most affordable and scalable Direct Air Capture technology in the world. We offer the highest quality carbon removal credits available for purchase today.
World’s first sequestration of atmospheric CO2 in concrete
We’re operating America’s only Direct Air Capture facility in Brisbane, California. In a first-of-its-kind, the CO2 captured by our facility has been permanently embedded in concrete used in building projects in the Bay Area, by our partner CarbonCure.
Partners on the path to a carbon negative future
The highest-quality carbon removal credits
Permanent removal of CO2
Our CO2 is permanently and safely stored underground, or in building materials like concrete.
Minimal environmental footprint
Our facilities can remove 50 tons of CO2 per square meter and can be sited on non-arable land.
Creating high-paying green jobs
We will site our facilities in fossil energy communities, providing high-paying jobs and driving investment in education and reskilling in a future-proof industry.
Designed for affordability
Our carbon removal credits will cost less than $100 per ton of CO2 by 2035.
Help restore balance to the atmosphere
Permanently remove CO2 from the atmosphere by purchasing our removal credits.