Heatable: production AI agents doing the work that used to mean more hires.
Fifty One Degrees embedded with Heatable, one of the UK's most profitable online home installation platforms, and shipped two custom AI agents into production: one that resolves inbound aftercare without a person, and one that drafts the solar grid paperwork that used to eat a project manager's week.
Growth that turned every new sale into a new cost
Heatable is one of the UK's most profitable online home installation platforms: a 500+ installer network delivering next-day across the country, built without venture capital and expanded from boilers into solar, battery, EV and air conditioning. But two high-volume functions were scaling on people. Inbound aftercare meant a person read and resolved every enquiry. Solar project management meant a manager hand-copying customer details into grid paperwork for every installation. Each increment of growth needed another hire, which is neither fast nor sustainable. Heatable wanted its operational capacity to come from technology, not payroll.
Two AI agents, live in production
The Aftercare Agent
A custom agent that handles inbound aftercare end to end. It understands each enquiry, acts across Heatable's systems, resolves the routine cases and escalates the rest to a person with the full context attached, including filing boiler manufacturer warranty claims directly. Since going live in April 2025 it has resolved 48% of inbound aftercare without a ticket ever reaching the team: 41% through quick fixes in the chat and 7% through customers filing warranty claims themselves. Of the roughly three aftercare issues raised each day, about half never touch a person.
The Solar Agent
A custom agent that takes on the grid paperwork behind every solar installation. It drafts the Letters of Authority and the G99 A11 (grid connection) and G99 A13 (commissioning) forms that Distribution Network Operators require, pulling the details straight from Heatable's own systems (The Dash and the Pylon design tool) so a project manager reviews and sends rather than copies and pastes. That paperwork was around 70% of a project manager's certification workload, and the manual copying was a steady source of errors and month-long delays whenever an address was wrong.
Engineered for production, not a demo
Bespoke Python builds
Both agents are custom Python, built around Heatable's real workflows and data rather than a configured off-the-shelf tool.
Google Gemini on GCP
Reasoning runs on Google Gemini, served through Google Cloud in a secure, scalable environment under a strict no-training policy.
A human on the exceptions
The agents resolve what they can and escalate the rest with context attached, so the team stays in control of every edge case.
Full TDD and observability
Test-driven development throughout, with observability built in so the team can see exactly what each agent does in production.
A purpose-built admin UI
A dedicated admin interface lets Heatable monitor, manage and tune the agents without touching the code.
Integrated over APIs
Both agents integrate over APIs into Heatable's core stack, acting on live data inside the systems the business already runs.
Embedded, open-book, and yours to keep
Fifty One Degrees runs the full lifecycle embedded with Heatable's team, working open-book and sharing the code and methods so Heatable's own engineers can maintain and extend the systems. This is a three-engagement partnership, not a one-off build.
Map the aftercare and solar workflows, the systems involved, and where automation pays back first.
Design each agent, its guardrails, its escalation paths and the admin experience around it.
Build the bespoke Python agents on Gemini via Google Cloud, integrated into Heatable's stack over APIs.
Test-driven development and QA against real cases, with observability proving behaviour before launch.
Ship into production with a human on the exceptions, monitoring volume and resolution from day one.
Ongoing support and tuning, and a growing backlog of new agents as the partnership expands.
What the agents deliver
From two agents to an AI-first platform
With the aftercare and solar agents proven, the partnership is expanding across Heatable's operations. In build and planning: automated engineer onboarding that verifies installer compliance documents the moment they are uploaded, a voice AI agent that screens prospective engineers on their technical knowledge, and predictive lead scoring so the solar team spends its time on the applications most likely to convert. The direction is a platform where AI does the repeatable work and the team does the judgement.
We couldn't live without the agents Fifty One Degrees built.Heatable team
What did Fifty One Degrees build for Heatable?
Two custom AI agents, live in production: an aftercare agent that handles inbound customer aftercare and boiler warranty claims, and a solar agent that drafts the grid-connection paperwork behind each installation. Both are bespoke Python, run on Google Gemini via Google Cloud, and integrate over APIs into Heatable's own systems.
What results has the aftercare agent delivered?
Since going live in April 2025, the aftercare agent has resolved 48% of inbound aftercare without a ticket reaching the Heatable team: 41% through quick fixes in the chat and 7% through customers filing warranty claims themselves. Around half of the roughly three aftercare issues raised each day never reach a person.
How does the solar agent help?
It drafts the Letters of Authority and the G99 A11 and G99 A13 forms that Distribution Network Operators require, pulling data straight from Heatable's systems so a project manager reviews and submits rather than copies and pastes. That paperwork was around 70% of a project manager's certification workload.
How does Fifty One Degrees work with Heatable?
Embedded and open-book. Fifty One Degrees runs the full lifecycle alongside Heatable's own engineers and shares the code and methods, so Heatable can maintain and extend the systems. It is a multi-engagement partnership rather than a one-off project.
Can Fifty One Degrees build something similar for my business?
Yes. Fifty One Degrees builds production AI agents around a business's real workflows and data. Book a Discovery Call and we will find the highest-volume process an agent could take off your team.
Want results like Heatable's?
Book a 30-minute Discovery Call and we'll find the highest-volume process an AI agent could take off your team.