Retrofit Aggregators & ESCOs

Fewer exclusions. Better programme viability.

HydroTop reduces the number of properties that fall out of your heat pump programme on grounds of installation complexity.

The Problem We Solve

Properties that keep breaking your programme model.

Every retrofit programme has a tail of properties that can't be served by conventional heat pump installation, mid-terraces, constrained sites, conservation area homes. These exclusions erode programme economics, create contractual complications and make it harder to deliver on commitments to funders and clients.

Embedding HydroTop as a standard solution within your framework means those properties stop being exclusions and start being deliverable. A consistent, reliable specification you can count on across diverse housing stock.

Programme Benefits

What HydroTop adds to your framework.

Reduces exclusion rate

Properties previously excluded on grounds of space, noise or planning become viable, improving overall programme economics.

Consistent specification

A standardised, prefabricated solution that can be specified across a programme with predictable installation requirements.

OEM neutral

Compatible with all major heat pump brands up to 10kW, no constraint on your existing supply chain or preferred manufacturers.

Managed delivery option

Inbox Thermal can provide end-to-end managed delivery, reducing the coordination burden on your programme team.

Supports PAS2035 compliance

Designed to support compliant retrofit delivery under PAS2035, with full technical documentation available for retrofit coordinators.

Regulatory pathway underway

UK certification is being actively progressed, with MCS engagement and Building Regulations compliance in process.

Working With Us

Framework integration and supply.

We are actively engaging with retrofit aggregators and ESCOs to understand how HydroTop can best be embedded within existing programmes and procurement frameworks.

Whether you are looking to add HydroTop as a line item specification, or want to discuss a more integrated managed delivery arrangement, we would like to understand your programme and explore what works.

We are in active conversation with retrofit programme operators across England. If you are planning a programme and want to understand how HydroTop could improve your viability numbers, get in touch.

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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