The standard is changing.Know where your range stands.
The Home Energy Model replaces how homes are assessed. HEM Access runs your products against it today, across the UK archetypes that matter, so range decisions are made on evidence.
Your products are about to be scored differently.
HEM is not just a calculation change. It moves the assumptions that decide how heat pumps score in the homes you sell into. The teams that see their numbers early set the range.
HEM Access gives product, engineering and data teams a working route in: certified product data mapped to HEM inputs, scenarios across agreed archetypes, and readouts your leadership acts on.
The public method, made usable.
Four working parts, delivered together as one maintained workflow.
Direct HEM scenario access
A controlled workspace for running and comparing Home Energy Model scenarios, without turning every question into a bespoke software task.
Certified product data, mapped
Public certification and manufacturer product data mapped into HEM-compatible records through a maintained EN 14825 route. Product selection and updates are part of the package.
Archetype and assumption comparison
Product choices compared across agreed UK dwelling archetypes, with the assumptions that move the result exposed rather than buried.
Repeatable readouts
Consistent R&D and planning outputs from the same workflow, with source, assumption and version recorded from the start.
Built for the teams the standard lands on.
Product and R&D teams
Run product scenarios, test assumptions, and see which inputs materially change HEM outcomes for the homes you sell into.
Product data teams
Certification and manufacturer product data stays connected to HEM-ready inputs, instead of mappings rebuilt by hand each time.
Leadership and framework owners
Plain readouts, a clear boundary between R&D and external use, and a direct path into decision frameworks built for your teams.
A first deployment is deliberately narrow.
It lands the readiness question on your products, not a platform programme.
- 01
Confirm the initial product set and any non-public product data route.
- 02
Agree the priority archetypes, comparison cases and first assumption controls.
- 03
Run the first product and archetype comparisons in the maintained workflow.
- 04
Take the first readout into range and framework decisions.
It is sold as an annual licence, with that first piece of work scoped before it starts.
- Manufacturer-agnostic by design: evidence from any maker’s systems, with certified products from 178 manufacturers in the record today.
- The Home Energy Model, run at 20 million home scale.
How every calculation is validated, and the working behind these claims: Technology.
The boundaries, stated plainly.
Bring your product set.
A briefing covers the product set, the archetypes that matter for your range, and what the first readout looks like.