MT Planning Planning

Efficient Rooftop Units (ERTUs) Advancement Plan

February 2, 2024

This Advancement Plan describes information to be 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 was collected via the California Public Utilities Commission Public Documents Area from December 6-20, 2023 and the Market Transformation Advisory Board. 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.

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

ERTUs Advancement Plan
Read the Efficient Rooftop Units (ERTUs) Advancement Plan

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CalMTA is a program of the California Public Utilities Commission and is administered by Resource Innovations, Inc.
© 2025 CalMTA. All rights reserved.

The California Market Transformation Administrator (CalMTA) develops and manages market transformation initiatives in the state to reduce energy use and reduce greenhouse gas (GHG) emissions.

CalMTA seeks to help meet California’s energy efficiency and decarbonization goals by accelerating adoption of energy-efficient products and practices through market transformation. Market transformation is a proven strategic process of intervening in a market to create lasting change.
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CalMTA follows a rigorous process for reviewing, scoring, and then developing relevant, timely market transformation initiatives. The process supports market transformation initiative creation from concept to program development to market deployment, as well as the eventual exiting of the market.

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