Design low energy homes

Making homes low carbon and energy pays off.

This is best achieved by considering homes as energy systems, rather than parts in isolation.

Our software helps domestic new build and retrofit professionals make high quality design decisions to make homes energy efficient and future-proof.

The Home Energy Model

Future-proof foundations with the future UK energy modelling standard
How has the Home Energy Model been validated?
May 15, 2024

We cover how the Home Energy Model has been validated against dynamic energy model ESP-r and PHPP, and results of real world building studies.

Read more
Why the Home Energy Model matters
May 23, 2024

The Home Energy Model (HEM) will become the standard for home energy modelling from 2025. We cover how HEM is different and why this matters.

Read more
Plan Retrofits to Maximise Savings
September 7, 2023

Homeowners who want to retrofit have many option of where to invest. We provide retrofit plans that helps homeowners make informed decisions.

Read more

Hear it first

Subscribe to our newsletter to hear about new content and products.
You're in! You'll hear from us soon
Oops! Something went wrong while submitting the form.
Working with
The Paak logoEphicient logoToogether logo
Pricing

Simple

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Explorer
£30/mo
Unlimited model creation
Full modelling featureset
Get started
Voyager - coming soon
£99/mo
Full export control
Portfolio mode
PI and PL insurance
Accreditation
Get started
Enterprise
Custom
Custom integrations
White label customer portal
Dedicated support
Contact us for more

Work with us

The retrofit revolution

A checklist assessment

Retrofit advisors

Delight customers with fast and
affordable retrofits using our software
Work with us
A manufacturing production line

Manufacturers

Scale production and access new
markets with our tailored support
Work with us

Why use us

Prioritise the right work and avoid mistakes

Well designed retrofits balance 'fabric improvements' that reduce energy waste, with 'system upgrades' that decarbonise heating and generation.

Wrong choices have consequences. A heat pump retrofit in an inefficient older property is a missed opportunity to invest instead in long term efficiency upgrades.

We simulate the impact of improvements to enable good retrofit decisions

  • Modelling-driven: We use energy modelling to tailor a retrofit roadmap to each home

  • Reliable quotes: We use specs and pricing data to quickly get a reliable quote

  • Verified: Understand available financing, subsidies and carbon credits

Use our software

JOIN OUR 
early access

✔ Use our product on your projects

✔ Feedback at earliest stages

✔ Lifetime discount
London, United Kingdom
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.