The Materials & Methods (MM) # is applicable to the City and County of Honolulu (all of Oahu). They are issued by the C&C Department of Planning and Permitting and signify that applicable materials & methods, in this case the Sunearth PV Water Heater installed per SunEarth’s instructions, are approved for use in installations and structures governed by their codes.
With a MM# contractors can pull permits online in minutes as opposed to the lengthy, over the counter, walk in paper submission process. This ultimately saves week and sometimes even months of waiting, streamlining the permitting process.
For any questions pertaining to this, please contact Inter-Island Solar Supply.