This Advancement Plan describes the information developed and research conducted to establish an Efficient Rooftop Units (ERTU) Market Transformation Initiative (MTI). Rooftop units are forced-air systems that package the evaporator, condenser coils, fans, and heating components into a single unit to serve a building’s heating, cooling, and ventilation needs. Three main design improvements addressing supply efficiency, heat recovery, and an improved shell can deliver 10-40% energy savings beyond today’s minimum efficiency RTUs. Greater savings and grid benefits can be achieved through the addition of advanced controls strategies. CalMTA will use data and research collected to further inform and refine the proposed market transformation theory, intervention strategies, and metrics and data to determine if this MTI should be recommended for implementation.
Public Comment
The draft ERTUs Advancement Plan was presented and reviewed by MTAB as part of the November 30 – December 1, 2023 MTAB meeting. It was posted for public comment on the CPUC Public Document Area and the CalMTA Public Comment Submission Portal from December 6-20, 2023. The MTI Advancement Plan Batch 1 Feedback Memo and ERTU Advancement Plan Feedback Response Memo provide a comprehensive list of comments received and CalMTA’s response. Comments and responses were also presented at the January 25, 2024 MTAB meeting. Following completion of the final Advancement Plan, CRTUs was approved by the CPUC to move to Phase II: Program Development.
Please note that the name for the Efficient Rooftop Units idea has changed to Commercial Rooftop Units.
