This project will assess pathways, technical solutions and guidance for simplified DIY homeowner or general contractor replacement of existing electric and gas water heaters with new heat pump water heaters (HPWH) in California. Permitting and code requirements for water heater installations can...

The two largest decarbonization targets in a commercial building are typically space heating and domestic hot water. Just these two end-uses account for well over 90% of the natural gas usage in most commercial buildings (excluding food service). Energy efficient, cost-effective solutions for...

The proposed project is a field demonstration of natural refrigerant (CO2) for high volume milk cooling on the dairy farm. Traditional methods of cooling high flow rates of milk have evolved over time from the use of different synthetics such as CFC’s, HCFC’s, and HFC’s. This proposed CO2 chiller...

With increased residential electrification, households are reducing their carbon footprint by replacing gas appliances and vehicles with all-electric alternatives. In California, the state has set a goal to reach 100 percent zero-carbon energy by 2045 (Executive Order B-55-18). While the reduction...

Central heat pump water heating systems (CHPWH) are crucial for the greenhouse gas, decarbonization, and energy efficiency goals of California. This technology is relevant to a large portion of the multifamily and commercial building market and the earliest adopters are beginning to install these...

Water heating energy use in multifamily buildings can account for 27 to 32 percent of total energy use based on 2015 Residential Energy Consumption Survey by U.S. EIA. Heat Pump Water Heating (HPWH) systems use electricity to produce hot water by transferring heat energy from one source, typically...

The proposed project is a field demonstration of an electric clothes dryer controller that can be added onto an existing electric dryer. Previous studies have shown that clothes dryers operate longer than needed even in automatic termination mode, wasting energy and drying time. The proposed...

This project will explore market potential and assess how Fault Managed Power Systems (FMPS) can reduce the barriers to electrification efforts by reducing the complexity and cost of electrical infrastructure upgrades across non-residential (commercial, industrial, and agricultural) customer...

Air source heat pumps for replacing gas-powered water and space heating are a keystone technology in efforts to decarbonize buildings.[1] Heat pumps have the potential to save approximately 60% of total residential heating energy consumption and reduce GHG emissions by 13.1 MMTCO2e if installed in...

Mechanical ventilation is becoming more prevalent due to Indoor Air quality (IAQ) concerns, particularly as construction trends move towards tighter envelopes to increase efficiency. Yet there is a tension between providing ventilation to ensure good IAQ and reducing the energy and demand impacts...