Installio raises £1.5m seed to expand national heat‑pump installations via installer platform
This article covers Installio, an energy startup, which has raised £1.5m in a Seed round led by Verb Ventures to expand its heat pump installation network across the UK. The funding is intended to scale domestic retrofit programmes and boost capacity and installation quality for homeowners, housing associations and industry partners.
Installio, an energy startup, has raised £1.5 million in a Seed round led by Verb Ventures to expand its heat pump installation network across the UK. The funding comes as policymakers and industry push to scale domestic retrofit programmes, and the company says it will use the capital to roll out nationally and build a next-generation installer platform.
Why it matters
The UK is accelerating heat-pump deployment ahead of regulatory changes that look set to make low-carbon heating standard in new buildings from 2026. Install capacity and consistent installation quality are widely cited as the sector’s bottlenecks: heat-pump installs are complex multi-day projects that require specialist design, commissioning and compliance. Poor-quality work has contributed to consumer scepticism, slowing household uptake.
Installio positions itself as an operational response to that problem, offering a technology-enabled model intended to improve installation consistency and compliance. The company says more reliable installs could help unlock government retrofit programmes and private demand, supporting the broader clean energy transition.
Inside the product
Installio combines a project-management platform with a vetted installer network and quality assurance processes. The system provides real-time project transparency, access to installers selected by the company, and tools aimed at ensuring compliance and commissioning standards are met.
Installio says it is already working with energy providers and retailers including E.ON Next, Aira and Good Energy, as well as contractors, housebuilders and housing associations, to deliver large retrofit programmes. These partners run national or regional retrofit activity and can provide installation volumes and customer channels for the company’s delivery model.
The company reports that in 2025 it opened four new regions in the south of England, with revenue growing 40% month on month and installs doubling every two months. Installio describes itself as one of the fastest-growing specialist installation providers in the UK and plans to use the Seed funding to scale those operations and continue platform development.
Who are the investors?
The Seed round raised £1.5 million and was led by Verb Ventures. The round was oversubscribed by two times, according to the company.
Alex Chikunov, Partner at Verb Ventures, says:
We are delighted to lead this funding round. Installio represents exactly the kind of market infrastructure business we back. The clean-energy transition isn’t just about introducing new technology, it’s about providing the operational capability to deliver thousands of high-quality installs reliably. Creating the perfect juncture between modern technology and hands-on expertise, we believe Installio is well positioned to become one of the UK’s leading clean-energy delivery platforms.
If you're researching potential backers in this space:
- Explore our list of energy venture capital firms in the UK
- Browse our directory of energy angel investors in the UK
Founder perspective
William Hoyer Millar, Co-Founder and CCO of Installio, says:
We are setting a new standard for clean energy installs. Heat pumps are only as good as the installs behind them, and for too long inconsistent quality has held back adoption and public sentiment. Our technology gives installers the tools to deliver high-quality systems every time - and gives our partners assurance that complex retrofit work will be done right, at scale.
Michael May, Co-Founder and CEO of Installio, says:
For homeowners, our technology ensures a smoother installation, reliable warmth and long lasting efficiency. This important Seed funding led by Verb Ventures allows us to expand nationally to meet demand and continue developing the platform that supports our teams on the ground. We are proud to be making home energy work.
Lord Martin Callanan, Non-Executive Director of Installio, and former Parliamentary Under Secretary of State (Minister for Energy Efficiency and Green Finance) at the Department for Energy Security and Net Zero, says:
Britain's clean-heating innovators are essential to our energy security and long-term prosperity, and Installio represents exactly the kind of ambition and quality the sector needs. Heat pumps aren’t just a cleaner way to heat our homes - they are critical national infrastructure. Every unit we install reduces our exposure to volatile global gas markets, strengthens Britain’s energy independence and keeps more value in our own economy. As a longstanding champion of clean heating, it’s inspiring to see a British business delivering high-quality, scalable solutions that will help households across the country enjoy warmer, greener homes.
The bigger picture
Heat-pump installations in the UK rose 56% in the first half of 2025, and several policy levers are aligning behind retrofit activity. The Future Homes and Buildings regulation is expected to make heat pumps standard from 2026. Research cited by Installio notes that rapid rollout could add £4.8 billion to UK GDP and create more than 80,000 full-time jobs by 2030, while the Centre for Net Zero estimates a heat-pump subsidy returns £1.24 in societal benefits per £1 of net government cost. Government programmes are expected to channel more than £13 billion into home-energy retrofits over coming years.
Those macro trends create demand, but the practical challenge remains delivery at scale and at consistent quality. Installio’s model — combining platform tools, a vetted installer workforce and quality assurance — targets that operational gap. If it can maintain installation standards as it grows, the company could become a useful delivery partner for large retrofit contracts.
The funding round and Installio’s expansion sit within a broader European push to decarbonise buildings and reduce reliance on gas imports. For UK policymakers and industry players, the test now is whether technology-enabled delivery businesses can translate policy ambition into reliable results at household scale.
They've invested in Installio
Get to know these energy investors
Click here for a full list of 7,233+ startup investors in the UK