United Kingdom · Seed startup

Who invested in Heatio

2 rounds we have observed, with the 2 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Energy

Funding summaryUpdated 26 Oct 2026

$3.5Mraised across 2 rounds since 2023, from 2 sources

$977KRound$2.5MSeed

Latest round: Seed, $2.5MJun 2024
Step-upi: 2.6×
Investors: 2

See who backed them

The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2024

$977KRound$2.5MSeed

First round: Round, $977K
Biggest round: $2.5M
Between rounds: 14 months

The rounds

Jun 2024
Seed$2.5M2 new
- Ascension
- SyndicateRoom
Source recorded
Apr 2023
Round$977K
No investor was named in the report.
Shares issued, filed with Companies House (SH01); no report of this raise yet

Funding filed with regulators

Heatio filed 2 raises, $792K in all. Filings say how much was sold and to how many investors; they never name the investors.

Apr 2024$303KUK share allotment
Apr 2023$489KUK share allotment

Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

Round2023Seed2024

Ascension

SyndicateRoom

Everyone who backed them

AscensionVC firm1round

SyndicateRoomVC firm1round

Missing a round, or an investor who was in one? Tell us.

Also claim to have backed them

These 2 firms list Heatio as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.