Heirloom

Compensation

Public job postings show examples including approximately $145,000–$210,000 for a Senior Mechanical Engineer, $150,000–$190,000 for a Lab Manager, $145,000–$175,000 for a Technical Project Manager, and $140,000–$170,000 for a Senior Mechanical Design Engineer, generally with equity. Public H-1B/LCA aggregators report median sponsored wages in roughly the $134,000–$147,000 range, depending on dataset and methodology.

Benefits

Pricing

Primarily negotiated enterprise offtake agreements for permanent carbon-removal credits; pricing is not publicly listed. Historical public signals include Stripe purchasing approximately 250 tons at about $2,054 per ton in 2021, and a $26.6 million Frontier agreement for 26,900 tons by 2030, with options for additional purchases.

Differentiators

• —Uses abundant, inexpensive limestone rather than relying solely on novel sorbent materials
• —Accelerates a natural mineralization process from years to days
• —Combines carbon mineralization and direct air capture
• —Designed around modular, mass-manufacturable DAC units
• —Uses renewable energy and electric-kiln technology to reduce process emissions
• —Claims a long-term pathway toward approximately $50 per ton of CO2 removed
• —Has operated North America's first commercial DAC facility with permanent CO2 capture
• —Demonstrated DAC-to-concrete storage with CarbonCure
• —Has secured large, bankable corporate offtake agreements and strategic industrial investors

Technology

Customers

Competitors