Karl Aldinger Nov 1 2022 at 10:11AM on page 6 Suggestion This could eventually become a requirement for the sale of a property, so I'm not sure if just describing it as an incentive is accurate. Incentives is usually dangling cash to get action. This is about education and a program to enable direct installation of electric appliances that cannot be installed today due to insufficient home wiring and panel capacity. In Building Electrification, this is the #1 barrier to fuel switching. replies
Karl Aldinger Nov 1 2022 at 10:06AM on page 7 This is a good example of how that impacts column is misused. Will a task force result in a good strategy to get fast action decarbonizing existing buildings? If so, then N/A is the wrong way to describe the impact of doing this. replies
Karl Aldinger Nov 1 2022 at 10:03AM on page 6 Electric readiness (prewiring) prevents installation of gas appliances which will soon become stranded assets. CARB has signaled banning the sale of gas furnaces and water heaters in 2030. So all-electric readiness which now has federal money to seriously cut its cost, should result in higher GHG reductions for low costs. Not sure why this was graded as low impact and M-H cost? replies
Karl Aldinger Nov 1 2022 at 9:48AM on page 1 Suggestion facilities implies municipal buildings. If this is describing ALL buildings it will not be 0-2 years. It will be an ongoing, rolling effort, and take as long as it takes to fully decarbonize all buildings. Maybe clarify how this could be done at different levels including municipal, commercial (through ordinance as San Francisco has done with their high rises), and residential. replies
Karl Aldinger Nov 1 2022 at 9:44AM on page 6 Suggestion Suggest changing the word "impacts" to "reduction" to be clear, and maybe include a key that states that "L" "M" and "H" represent low medium and high, and describe in the key that these are reductions relative to other actions listed, or relative to the total regional emissions. replies
Karl Aldinger Nov 1 2022 at 9:37AM on page 54 Suggestion Ground sourced heat pumps are still electric heat pumps. They just exchange their heat with ground instead of the ambient air. They need electricity to run the compressors and allow refrigerant to change from hot to cold. The geo part is just a reservoir for the heat to be drawn from or released into. This is why HVAC is such an important part of UA's contribution to building electrification. San Diego would experience less benefit from ground sourced heat pumps than colder regions, because the in most cases it's the extreme cold that makes air sourced heat pumps work harder and be described as less efficient. There is probably a case to be made for large buildings with very large systems benefiting from ground source AC via heatpump here in San Diego. Here's a video showing what the equipment inside looks like, and how the connections are made. link replies
Karl Aldinger Nov 1 2022 at 9:15AM on page 1 Suggestion The term "estimated potential GHG impacts" isn't clear. In some papers like this it describes the NEGATIVE impact that an action has. Given that this is a program to reduce GHG, it should be describing POSTIVE impacts (ie reduction). But none of the proposed solutions are high, so whoever graded this either doesn't believe that GHG reduction from any Building electrification will have a large effect, or they failed to assess relative to others. N/A is not an answer to GHG reduction from most of these, because they have a knock on effect. It seems N/A was used in the traditional EIR sense of describing that planning an analysis doesn't generate appreciable GHG. I think this needs to be redone. replies
Kori Ellis Oct 31 2022 at 10:52AM on page 4 Suggestion Onsite water reuse ordinance can be useful utilizing high road jobs and skilled and trained plumbers. Reusing water onsite can lower cost for consumer as well as reduce water use by up to 40%. link. replies
Kori Ellis Oct 31 2022 at 10:45AM on page 4 Suggestion Geothermal heat pumps should also be educated upon. Geothermal heat pumps use 25%-50% less energy than electricity heat pumps and can last longer. link replies
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