The California Energy Design Assistance Program can help you decarbonize your healthcare facility. 

California’s electric grid is transitioning to cleaner energy. To reduce the carbon footprint of your healthcare facility, you must first determine how your energy is being used and the associated carbon footprint. This can depend on your building’s climate zone and associated heating and cooling needs. 

Using electricity instead of natural gas to serve your building’s space heating and water heating needs ensures your building asset continues to reduce its carbon footprint year over year. 

The California Energy Design Assistance Program can help you build in resiliency by analyzing which carbon reduction strategies meet your goals and budget. 

Did you know that as of July 2023, new gas connections will no longer receive subsidies?

Key carbon reduction systems for healthcare facilities: 

• Electrify heating systems using heat pumps or variable refrigerant flow (VRF) systems 
• Increase envelop performance to minimize conditioning loads 
• Utilize refrigerants with low global warming potential 
• Electrify water heating systems with heat pump water heaters

2026 Carbon emissions for a healthcare facility in Southern California 

If California is successful in its projections and rates of decarbonization, then the electric grid will inevitably get cleaner as time goes on. Considering these projections, we can look at which strategy choices have the best carbon reduction as the grid gets cleaner. 

The first set of bars display where we are today: 

1. First bar indicates a building that is built to today’s code without adopting any carbon reduction strategies. 
2. Second bar is for conventional gas systems. 
3. Third bar is for air source heat pumps (ASHPs) with heat pump service water heating. 
4. Fourth bar indicates Variable Refrigerant Flow (VRF) system with heat pump service water heating. 

As time goes on and the grid gets cleaner it is apparent that higher carbon reduction strategies (like the air source heat pump and heat pump water heaters) provide the greatest carbon emissions over time and will become more efficient as the grid becomes cleaner. 

2026 Carbon emissions by building system end uses for a healthcare facility in Southern California 

This chart details a typical healthcare facility in Southern California using three different systems and shows how the focus on the types of carbon reduction measures changes based on the system type: 

1. First bar shows that conventional gas systems had the largest carbon emissions in the heating end uses. 
2. Second bar shows the results if an air source heat pump (ASHP) and heat pump water heater was used instead of the conventional gas systems while keeping all other inputs the same. There is a significant reduction in heating emissions as compared to the conventional gas system along with a reduction in the carbon impact of the service water heating. 
3. Third bar shows a further reduction when using a VRF system along with heat pump water heaters for the service water. VRF systems have the capacity to operate simultaneously in heating and cooling, recovering heat from cooling zones and delivering it to heating zones which may provide additional energy savings. 

Electrification of heating and service water end uses can promote a reduction in carbon emissions. Reduction of plug loads and electric light usage are also important carbon reduction strategies for a healthcare facility. 

Carbon emissions with the addition of solar for a healthcare facility in Southern California 

The third chart displays how the addition of solar PV on 75% of the available roof area interacts with different systems over time. The carbon reduction we see now from the addition of solar are diminished as the grid becomes cleaner over time. 

The first set of bars display where we are today: 

1. First bar indicates baseline level. 
2. Second bar is conventional gas AHU. 
3. Third bar is for an air source heat pump (ASHP). 
4. Fourth bar is for a VRF system. 

While solar is still a key strategy, you will see diminishing returns as the grid gets cleaner. On its own, solar will not get this building to net zero carbon. 

Electrifying mechanical and water heating systems are important carbon reduction strategies that will future proof your building for years to come. 

Contact us today to enroll and build resiliency into your project.