NOM-027-ENER / SCFI-2018: Thermal performance, gas saving and safety requirements of solar water heaters and solar water heaters with the support of a water heater that uses L.P. gas as fuel or natural gas. Specifications, testing methods and labeling.

Last updated: 18 July 2019
This standard establishes the thermal performance specifications of solar water heaters for domestic and commercial use, thermosiphon type, that have a thermal tank with a maximum capacity of 500 liters; the gas saving of solar water heaters with the backing of a water heater that uses LP gas or natural gas as fuel. See the attachment for the minimum thermal efficiency levels.

Want to know more about this policy ? Learn more (Spanish)Learn more (Spanish)

End uses covered
  • Building end-uses
  • Building systems
  • Water heating