Heirloom logo — Mitigating the worst impacts of climate change by developing...

Heirloom

Mitigating the worst impacts of climate change by developing the world’s most cost-effective CO2 removal technology

Founded 2020 United States San Francisco, United States 183 employees Series B Total: $204.00M

General Information

Company Name Heirloom
Founded Year 2020
Location United States San Francisco, United States
Employees 183
Funding Stage Series B
Social

BounceWatch is an independent company data service, not affiliated with Heirloom. To contact Heirloom, visit heirloomcarbon.com.

Is this your company?

Confirm with your work e-mail, get the Verified badge and keep this profile correct yourself. Search engines and AI assistants read it every day.

Get Verified

How does Heirloom compare?

A PDF of Heirloom and up to 10 competitors you pick: team, funding, traffic and every dated move of the last 90 days. Each company is re-checked on the day you order, so it is current.

See a sample report

This takes a few seconds: we look beyond our own index too.

Meeting Heirloom soon?

A one-page PDF brief: what it does, key facts, the last 90 days of dated moves and questions worth asking. Re-checked on the day you order. See a sample

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 carbon dioxide—from years to mere days.

In 2023, Heirloom achieved a milestone with the establishment of North America's first and only DAC facility capable of permanent CO2 capture. Esteemed clients such as Microsoft, JP Morgan, McKinsey, Stripe, and Shopify are testament to the solution's credibility and effectiveness in battling climate change.

A recent $150.00M Series B investment on 01 December 2024 further underscores market trust, with backing from investors like Switch Ventures, Future Positive Capital, Breakthrough Energy Ventures, and United Airlines. Heirloom is headquartered in the United States, positioning itself as a pivotal player in sustainable innovation.

Business keywords: Climate Change Mitigation, CO2 Removal Technology, Direct Air Capture, Carbon Capture, Limestone Utilization, Permanent CO2 Storage, Carbon Absorption Enhancement, Renewable Energy Integration, Sustainable Technology, Environmental Technology Innovation, Carbon Removal Partnerships

Services & Products

Permanent CO2 Removal
Direct Air Capture Facility Development
Advanced Carbon Capture Technology

Target Customers

Businesses Committed to Sustainability Organizations with Net-Zero Goals Partners Interested in Climate Solutions

Funding Rounds & Investors (4)

View All
Funding Stage Amount Investors Lead Investors Date
Series B $150.00M 14
Switch Ventures, Future Positive Capital +12
01 Dec 2024
Series A $53.00M 5
Breakthrough Energy Ventures, Ahren Innovation Capital +3
01 Mar 2022
Seed $1.00M 4
Prelude Ventures, Breakthrough Energy Ventures +2
01 May 2021
Grant Undisclosed 1
National Science Foundation
01 Jan 2021

Heirloom Alternatives & Competitors

View All Alternatives
Heirloom vs

Pioneering carbon removal with Direct Air Capture to help businesses reach net-zero and drive econom...

Private Equity
435 employees
ESG, Sustainability
Heirloom vs

Working to restore our climate with technology that removes carbon dioxide from the air at megaton-s...

Grant
189 employees
ESG, Renewable Energy
Heirloom vs
AirMyne
AirMyne United States

Scaling high-quality carbon removal through Direct Air Capture.

Seed
17 employees

FAQ About Heirloom

Mitigating the worst impacts of climate change by developing the world’s most cost-effective CO2 removal technology
Heirloom was founded in 2020.
Heirloom is headquartered in San Francisco, United States.
Heirloom has approximately 183 employees.
Heirloom has completed 4 funding rounds, raising a total of $204.00M. The latest funding stage is Series B.
Heirloom offers: Permanent CO2 Removal, Direct Air Capture Facility Development, Advanced Carbon Capture Technology.
Top alternatives and competitors to Heirloom include Climeworks, Carbon Engineering, AirMyne, DACMA GmbH, ARK Capture Solutions. These companies operate in related industries and serve comparable markets. You can compare them side by side on Bounce Watch.
Heirloom and Climeworks are both companies in similar industries. Compare their funding, team size, growth signals, and market position on Bounce Watch to see which one fits your needs.

Source: BounceWatch company record for Heirloom, https://bouncewatch.com/company/heirloom, updated 17 February 2026. When citing, please name BounceWatch and link this page.

Analytics cookies (ours + Google). Cookie Policy

Book a demo 30 minutes