This project strives to collect comprehensive laboratory test data on the heating, cooling, dehumidification, and native controls performance of Micro Heat Pumps (MHP), that are of interest to California’s consumers. This effort will build on the data collected under CalNEXT Project ET23SWE0034 -...

This project demonstrates the energy-saving benefits of phase change material (PCM) in drop ceilings to reduce cooling energy in California schools, where HVAC systems account for 50% of energy use (Energy Information Administration, 2018). Cooling dominates HVAC loads in warm classrooms due to...

More than 80% of the buildings that will exist in 2050 are already built and are existing buildings. Created for new construction projects, American Society of Heating, Refrigeration, and Air-Conditioning Engineers (ASHRAE) Guideline 36 (G36), “High-Performance Sequences of Operation for HVAC...

California’s decarbonization goals are dependent on individual decision makers choosing to upgrade systems dependent on fossil fuels. Reaching those decision makers is challenging, none more so than commercial kitchen owners and operators, who are managing a variety of factors including small...

 California has nearly 200,000 walk-in refrigerators and freezers in the food & beverage, retail, and restaurant markets. Most of this equipment relies on high-GWP synthetic refrigerants that, when leaked, are significant contributors to greenhouse gas (GHG) emissions. VEIC proposes to conduct a...

This project is a field study of a Gas Absorption Heat Pump (GAHP) water heater. The GAHP is a gas-fired technology with a technology readiness level (TRL) of 9. This project falls into phase 2F (field study phase) of a multi-phase field study pilot project for GAHP water heaters & combination...

Refrigeration systems in commercial facilities, such as supermarkets and grocery stores refrigerated display cases and cooler/freezer rooms, can account for up to 50% of these facilities' total electricity consumption. In California, most refrigeration systems rely on HydroFluoroCarbon (HFCs),...

The scope of this project is to interview five (5) subject matter experts (SMEs) to gain early feedback on CFS measures without incentives or measure packages and barriers to their implementation. Barriers could include: not enough difference between efficient an non-efficient equipment, high...

In 2021 PG&E’s Code Readiness Program research team (research team) initiated an evaluation of measured building air-leakage rates in multifamily buildings across California. Several past studies tested air-leakage rates in multifamily buildings and dwelling unit compartmentalization rates, but...

The 2024 High Efficiency Rooftop Unit (HE RTU) focus pilot builds off CalNEXT’s existing 2023 RTU focus pilot. The existing HP RTU focus pilot is a midstream pilot aligned with the current efficiency minimums of the current eTRM RTU HP measure packages. The goal of that pilot is to streamline the...