Hydronic under-floor heating

Hydronic underfloor heating on a current Humphrey Homes project.  The red piping will carry warm water through the concrete slab heating the slab and the whole house.  A heat pump will be used to heat the water.

This photo was taken just before the concrete was installed. The idea isn't actually new, the Romans came up with it about 2000 years ago.  It's just been refined a bit!