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Social Housing & Local Authorities

Unlock your hardest-to-treat stock, at scale.

HydroTop™ makes heat pump installation viable in dense terraced housing and properties that conventional solutions simply cannot reach.

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The Challenge

The properties that keep falling out of your programme.

Social housing providers and local authorities face a consistent problem: a significant proportion of their stock, mid-terraces, properties with no external space, homes in conservation areas, keeps being excluded from heat pump retrofit programmes on grounds of installation viability. This creates abortive survey costs, programme delays, and makes it harder to hit decarbonisation targets.

The Warm Homes Plan's ambition of 450,000 heat pump installations per year by 2030 cannot be achieved without a solution for this stock. HydroTop™ is that solution.

Inbox Thermal offers a fully managed delivery model, from initial survey and programme design through to installation and handover. One point of accountability. No need to manage multiple contractors.
Why HydroTop™ Works

Six reasons it fits a managed programme.

Unlocks excluded stock

Property types conventional surveys routinely reject become viable.

Reduces abortive costs

Fewer failed surveys and late-stage cancellations across a programme.

Managed delivery

Inbox Thermal provides end-to-end managed installation, survey, supply, installation and handover, under a single contract.

Tenant-friendly

No external noise, no visual impact, no loss of outdoor space.

Theft and damage resistant

The unit is housed within the roof void, out of reach and protected.

Regulatory pathway underway

UK certification is progressing: BROOF(t4), Building Regulations, MCS.

Our Approach

A managed delivery model built around your programme.

Inbox Thermal is not simply a product supplier. We offer a fully managed delivery model, working with social housing providers and local authorities to design, plan and deliver HydroTop™ installations as part of a structured retrofit programme.

This means a single point of accountability for the entire process: initial property assessment and feasibility, programme design and sequencing, supply and installation management, and post-installation handover documentation.

We work with a network of trusted, accredited installation partners and take responsibility for quality and compliance at every stage.

We are currently in active conversation with social housing providers and local authorities across England. If you are planning a heat pump retrofit programme and want to understand how HydroTop™ could increase the viability of your stock, we would like to talk.
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Social housing block with heat pump retrofit potential
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Ready to find out more?

Get in touch with our team to discuss how HydroTop™ could work for your programme or project.

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