The 120V heat pump water heater (HPWH) has the potential to vastly increase customer adoption of heat pump water heaters by reducing installation costs. The 120V units plug directly into existing shared or dedicated circuits at the WH location, eliminating additional electrical wiring and/or...

Indirect evaporative cooling can provide cooling at much higher efficiency in California climates compared to the vapor compression cooling systems currently used in most buildings. In the past, these indirect evaporative cooling systems have been add-ons to roof top packaged units, have required...

This project will evaluate new applications of aerosol sealing, a product used to seal buildings primiarily in new construction, to sealing in existing homes. Previous studies have shown that half of the leakage in new California homes occurs through the attic so addressing leakage at the attic...

One of the greatest underutilized opportunities for energy savings in buildings through retrofits and retro-commissioning is optimized HVAC system sequence of operations (SOO). A recent EPIC Best In Class research project funded by the California Energy Commission showed that implementation of...

The laboratory evaluation of a commercial, whole-building, integrated control system project aims to achieve whole-building energy and demand reduction, load flexibility, improved occupant comfort, and reductions in control system installation costs by integrating control of multiple building...

A new energy-saving product called an air management system (AMS) has been developed as a drop-in replacement for compressed air filter-regulator-lubricator (FRL) assemblies. The AMS saves energy by reducing pressure to large pneumatic end-uses during idling and cutting off air supply during...

The California Plumbing and Energy Codes do not mandate master mixing valves (MMV) for temperature control of domestic hot water (DHW) recirculation systems. Prior lab or field studies has not investigated the energy savings potential of MMV in recirculation systems. While some applications such as...

Water heating for food service applications represents 340M therms of gas consumption in California, and thus presents a significant opportunity for electrification, as well as significant efficiency improvements in retrofits and new construction applications. Public-facing design guides specific...

The proposed project evaluates the current state and anticipated future of Residential Energy and Automation (REA) systems. REA systems are a new category of residential appliances that combine the features of Home Energy Management Systems (HEMS). HEMS energy savings potential have been estimated...

Home space heating, space cooling, and domestic hot water heating loads can be served efficiently by contemporary air to water heat pump technology. Higher operating efficiencies and a shift of loads from peak to non-peak demand periods can be achieved through a shared network of hydronic piping...