The embodied impacts of Phase Change Materials (PCMs) can be calculated in eToolLCD by either an EPD from the manufacturer or one of our library materials as a proxy. The thermal performance benefits will need to be captured by the energy simulation software. Final heating/cooling loads (MJ/m2/year) can be entered in eToolLCD to allow the user to understand the net benefit when comparing the embodied impact from materials / installation / maintenance / end of life versus the thermal performance improvement / heating/cooling energy savings. The results will be largely influenced by the climate conditions, the design overall thermal performance and the PCM product selected.