End-Use Savings Shapes
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Note on Heat Pump Modeling
Limited comprehensive heat pump performance maps exist, which are required for
detailed energy modeling. This limits our understanding of heat pump performance and
operation in this work.
Heat pump modeling is sensitive to performance assumptions due to the strong
relationship between efficiency and capacity with outdoor air temperature. This impacts
both annual energy consumption and peak demand.
This work attempts to use the most informative data available and makes documented
assumptions about heat pump operation and performance. These will notably impact
results. Please consider these assumptions.
The assumptions used for the measures represent one of multiple possible approaches.
They are intended to be reasonable but not necessarily optimal. Assumptions can be
modified as our understanding of the technologies improves.
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