To discuss your project give us a call on 01392 861763

How does a passive house maintain warmth?

Find out more about the passive house standard of building.

Most of the heat inside a passivhaus comes from the occupants (we give off a surprising amount of heat) and what they do. All the heat from showering, cooking, laundry and all the appliances is used to heat the house along with the sun in the colder months. The heat recovery ventilation system then ensures you always have fresh air in the house but it recovers around 90% of the heat from the stale air it’s extracting. So, you lose very little heat. Our own passivhaus home stays at around 21-23 degrees celsius and last year cost us £50 (GBP) to heat it, which equates to £0.13p per square metre for the whole year. Contact us if you’d like to know more.

CPD Training

We offer CPD training for architects practices across Devon and Cornwall.

Software Modelling

We offer dynamic heat and moisture modelling as well as condensation risk analyses.

Building Plan Review

If you have some plans and would like our opinion on which materials would be the best for you, contact us.


Back to Earth is a natural building material supplier. We're not your typical builders'​ merchant though and instead work closely with our clients during the planning, designing and building phases of projects.

Back to Earth is a proud signatory of the Anti-Greenwash Charter:

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