The ANSI/CSA/IGSHPA C448 Standard for the Design and Installation of Ground Source Heat Pump Systems for Commercial and Residential Buildings is now available for free viewing access at https://community.csagroup.org/docs/DOC-146037. You can create a free account on the CSA Communities to view the latest standard. It may still be downloaded as PDF on the International Ground Source Heat Pump Association website at https://igshpa.org/standards/ for $100 (IGSHPA member cost) or the hard copy may be purchased at the CSA website for $155 if desired.
This is the first edition of the bi-national ANSI/CSA C448 Series, Design, and installation of ground source heat pump systems for commercial and residential buildings. It supersedes the previous editions published in 2013 and 2002 under the title, Design, and installation of earth energy systems.