Innovate UK trial
We're looking for houses to host heata units; be part of a groundbreaking distributed data centre.

We help landlords improve the energy efficiency of their housing and offer free hot water to their tenants


EPC improvement

By 2026 new tenancies must have an Energy Performance Certificate (EPC) rating of C or better, and all tenancies by 2028. EPCs are also required when properties are built or sold.

The heata unit is expected to improve the EPC rating by 4-8 points. Heata is undertaking the Standard Assessment Procedure (SAP) to trial the units and calculate the improved energy performance. The Building Research Establishment (BRE) will then add the heata unit to its database of products used to calculate EPCs.

Free hot water

The heata unit is a cost effective alternative to expensive building works for landlords to meet EPC targets.  Once installed at no cost to the tenant, the waste heat from compute heats the household’s hot water – delivering up to 3.6kWh per day.

For the average household this is 80% of its hot water energy consumption and will save £200 / year [1]. These savings will rise further with Ofgem's increase of the energy price cap in April and possibly again in October.

Meet the heata unit

A powerful compute server that attaches to domestic hot water cylinders, the heat generated by the processing is transferred into the cylinder using a patented thermal transfer mechanism.

Installation overview

Our patented thermal bridge is fitted to 450mm diameter domestic hot water cylinders and provides the attachment point for our powerful server.

We've tested the installation process with British Gas engineers and checked that it doesn't invalidate cylinder warrantees with one of the UK's largest cylinder manufacturers.

To find out if your cylinder is suitable for a heata unit, download our summary brochure which includes the cylinder checklist and installation overview.

Get in touch

The heata unit can be retro-fitted to the majority of domestic hot water cylinders and is a great fit for social housing organisations who want to decarbonise their housing stock and help tenants with their electricity costs. If you'd like to find out more, we'd love to hear from you.


A 'host' is the household with the heata unit installed on their hot water cylinder.
Still have questions? Get in touch