Carbon Blue vs Heirloom
Carbon Blue vs Heirloom, compared side by side on 18 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Carbon Blue is on 54/100 and Heirloom on 45/100.
Where each one leads
Carbon Blue
- our overall score: 54/100 against 45/100
Heirloom
- domain rating: 68/100 against 52/100
- headcount: 100 against 20
- funding raised: $162M against $10.0M
At a glance
| Measure | Carbon Blue | Heirloom |
|---|---|---|
| What it is | Technology that removes CO2 from water, turning water infrastructure into carbon capture facilities. | Direct air capture startup using limestone to remove CO2 from the atmosphere at scale. |
| Category | Cleantech, Carbon Removal, Climate Tech, Carbon Capture | Climate Tech, Carbon Removal, Direct Air Capture, Cleantech |
| Sells toBusiness model | B2B | B2B |
| Offering | Technology | Hardware |
| Founded | 2022 | 2020 |
| Headquarters | San Francisco, United States | Brisbane, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Carbon Blue | Heirloom |
|---|---|---|
| Employees | 20 | 100 |
| Headcount growthLast 12 months | +54.1% | Not published |
| Total funding | $10.0M | $162M |
| Latest round | Seed | Series B |
| LinkedIn followers | 3,735 | Not published |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Carbon Blue | Heirloom |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 54/100 | 45/100 |
| Traction | 48/100 | 60/100 |
| Team | 60/100 | Not published |
| Search visibility | 30/100 | 12/100 |
| Quality | 58/100 | 55/100 |
| Agent readinessHow well an AI agent can read and act on the site | D (41/100) | D (42/100) |
| Domain ratingLink authority, 0-100 | 52/100 | 68/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Carbon Blue | Heirloom |
|---|---|---|
| CDN | Cloudflare | Cloudflare |
| CMS | WordPress | Webflow |
| Frameworks | Jquery | Not detected |
Carbon Blue vs Heirloom: common questions
Which is better, Carbon Blue or Heirloom?
On our 0-100 score Carbon Blue rates higher (54/100 against 45/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 18 data points above: read the rows that match what you are buying for.
How do Carbon Blue and Heirloom compare on the numbers?
Carbon Blue leads on our overall score (54/100 against 45/100). Heirloom leads on domain rating (68/100 against 52/100), headcount (100 against 20), funding raised ($162M against $10.0M).
Read the full Carbon Blue review and pricing or the Heirloom review and pricing. You can also browse other Carbon Blue alternatives we track.