REHAU announced that its RAUGEO™ crosslinked polyethylene (PEXa) piping system has been certified for use in Canada following revisions to the CSA Group’s new Standard C448/2013 Design and Installation of Earth Energy Systems. The previous 2002 series of CSA C448 dictated exclusive use of non-crosslinked polyethylene pipe for ground heat exchangers. With the implementation of the revised C448/2013 standard, PEXa pipes and F2080 cold-expansion compression-sleeve fittings may now be used in these applications throughout Canada. The C448 standard was developed and approved by a technical committee and subcommittee representing multiple geothermal industry stakeholders including installers, drillers, designers, equipment manufacturers, regulators and utilities. CSA C448 applies to new and retrofit installations and includes requirements for piping, installation techniques, and ground-source heat pumps for residential and commercial buildings.