MT Planning

Portable/Window Heat Pumps Advancement Plan

February 2, 2024

This Advancement Plan describes information to be developed and research conducted to establish a Portable/Window Heat Pumps Market Transformation Initiative (MTI). Portable and window heat pumps (aka micro heat pumps) are affordable, self-contained consumer products that provide efficient heating and cooling for small spaces. These devices can be self-installed and plugged into standard 110-volt outlets. CalMTA will promote units that can still provide heat when the outdoor air temperature is below 41F, include air filtration, use low GWP refrigerants, and incorporate controls to allow the units to be grid-responsive in the future.  

Please note that the name for the Portable/Window Heat Pumps MTI has changed to Room Heat Pumps.

Room Heat Pumps MTI Development Milestones

Public Comment

The draft Portable/Window Heat Pumps 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 Portable/Window Heat Pumps 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, 2025 MTAB meeting.

Advancement Plan|Deprecated|Heat Pumps|Heating/Cooling|Multifamily Housing|Residential|Tenants

Read the Portable/Window Heat Pumps Advancement Plan

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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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Commercial Rooftop Units Draft MTI Plan

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