IAPMO IGC 372-2022 Atmospheric Thermal Storage Devices
1.1.1 This Standard covers atmospheric thermal storage devices intended for but not limited to space
heating and cooling applications, hot water distribution without coming into contact with
potable water, pool heating, and snow melting applications and specifies requirements for
materials, physical characteristics, performance testing, and markings.
1.1.2 This Standard does not cover products that come in contact with potable water