Efficient Rooftop Units (ERTUs) Advancement Plan - CalMTA

MT Planning

Efficient Rooftop Units (ERTUs) Advancement Plan

February 2, 2024

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.

Efficient Rooftop Units MTI Development Milestones

Idea selected for advancement to Phase I: Concept Development at the October 13, 2023 MTAB meeting
Draft Advancement Plan presented and reviewed by MTAB at the November 30 – December 1, 2023 MTAB meeting
Idea advanced to Phase II: Program Development following CPUC approval of the final Advancement Plan

Public Comment

The draft Efficient Rooftop Units Advancement Plan 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.

Please note that the name for the Efficient Rooftop Units idea has changed to Commercial Rooftop Units.

Advancement Plan|Building Envelope|Commercial|Heating/Cooling|Indoor Air Quality

Related Resources

MT Planning

Commercial Rooftop Units MTI Plan

CalMTA’s Commercial Rooftop Units (CRTUs) Market Transformation Initiative (MTI) aims to accelerate market adoption of high-performance heat pump RTUs with advanced features as an efficient heating and cooling solution for California’s commercial buildings. CRTUs offer a significant, cost-effective opportunity to reduce commercial building energy consumption, increase HVAC system resilience, reduce

MT Planning

Commercial Building Efficiency Accelerator Advancement Plan

This Advancement Plan summarizes available information and essential research activities for the proposed Market Transformation Initiative (MTI) that CalMTA recommends advancing from Phase I: Concept Development into Phase II: Program Development. It represents the stage-gate deliverable illustrated in Figure 1 and describes the scope of work for research, testing, and

MT Planning

Room Heat Pumps MTI Plan

CalMTA’s Room Heat Pumps (RHP) Market Transformation Initiative (MTI) aims to accelerate market adoption of room heat pumps to provide efficient heating and cooling in existing small, single-family, and multifamily households. With a forecasted Total System Benefit (TSB) of $480 million, RHPs offer a significant, cost-effective opportunity to reduce energy

MT Planning

Induction Cooking MTI Plan

CalMTA’s Induction Cooking Market Transformation Initiative (MTI) seeks to accelerate market adoption of efficient induction cooktops and ranges to provide a high-quality cooking experience with the added health and safety benefits afforded by induction technology. Cooking is one of the most visible and personal uses of energy in households and

MT Planning

Foodservice Water Heating Systems Advancement Plan

This Advancement Plan summarizes available information and essential research activities for the proposed Foodservice Water Heating Systems Market Transformation Initiative (MTI). The initial research efforts outlined will inform the long-term potential of this technology before CalMTA recommends whether to advance this MTI further. All Advancement Plans are reviewed by the

MT Planning

Commercial Replacement & Attachment Window Solutions Advancement Plan

This Advancement Plan summarizes available information and essential research activities for the proposed Commercial Replacement and Attachment Window Solutions (CRAWS) Market Transformation Initiative (MTI). It represents the Phase I stage gate deliverable describing the scope of work for research, testing, and stakeholder engagement that will be needed during Phase II