To distribute heat well captured, bioclimatic architecture
uses opaque materials, including a slab or walls painted
a dark color (a brown or clay that does not reflect light).
The material used must be very dense and heavy inertia
to absorb a large quantity of energy during the day and
rebroadcast throughout the night.
This surface, called wall sensor acts as a radiator and
may obviate the need for a central heating system.
The majority of energy inputs is then Solar and can
be supplemented by an auxiliary heating, usually in wood.