A pragmatic path for Social Housing

Helping Local Authorities and Housing Associations overcome the “Heat Pump Difficulty” and deliver Net Zero for flats, maisonettes, and dense terraces – without the cost of major structural retrofits.

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Long-term resident satisfaction

EPC reform ready

Rapid, low-disruption installs

Dedicated technical support

The "heat pump difficult" reality

A “heat pump only” mindset risks leaving behind the trickiest homes. We address the three primary barriers to urban decarbonisation:

Spatial constraints:

High-density buildings often lack the outdoor space required for external condenser units, making traditional heat pumps a physical impossibility.

Planning & Heritage:

External modifications can lead to months of planning delays or rejections in conservation areas and listed buildings.

Disruption & Complexity:

A traditional low-carbon retrofit is rarely a “swap”; it often involves 3–7 days of invasive work, including ripping up floors to upgrade pipework and replacing every radiator.

tepeo heat battery boiler and sunamp water solution in apartment

From "heat pump difficult" to "rapid retrofit"

Direct replacement:

The ZEB is an entirely internal heat battery engineered to connect directly to the existing flow and return pipework of a standard gas boiler.

Emitters unchanged:

Avoid the high cost and disruption of a total system overhaul while preserving the building’s infrastructure. The ZEB delivers high-flow temperatures that integrate perfectly with existing radiators.

Programmatic speed:

With a 1–2 day install that mirrors a boiler replacement, the ZEB allows for rapid rollouts at scale, reducing management overhead and resident friction.

EPC reform ready:

Heat batteries will score a minimum of a C on the Heating System metric in future EPCs, and will contribute towards the Smart Readiness metric, with comparable running costs to gas boilers

Support Ecosystem

Putting residents at the heart of the transition

Decarbonisation shouldn’t come at the cost of resident comfort or financial stability. We’ve designed the ZEB to feel like a familiar boiler while delivering the benefits of a smart energy asset.

Optimising resident energy costs

The ZEB’s smart charging logic automatically targets the cheapest, greenest electricity tariffs. By shifting demand away from peak times, we help protect residents from the highest energy prices and ensure the transition to electric heat is as affordable as possible.

No lifestyle compromises

Unlike heat pumps that require a “low and slow” heating approach, the ZEB gives residents the familiar high-temperature heat they want, all via a standard thermostat.

Rapid, low-disruption installs

By eliminating the need for invasive pipework and radiator upgrades, the ZEB is typically installed in just 1–2 days, minimising the time contractors spend in a resident’s home.

Ready to decarbonise Your hard to heat stock?

From initial portfolio mapping to technical site surveys, we provide the data and expertise needed to identify where the ZEB can deliver the most impact for your residents.

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