Hello,
We have 1 ton single package vertical heat pump in each apartment of a
multi-family building. For minimum efficiency as per ASHRAE 90.1-2007.
should these systems be compared with Table 6.8.1D *PTHP* system or *SPVHP*?
Please let me know.
Thanks,
Sunayana
The answer depends on your goal:
If you are looking for mandatory efficiency requirements for code
compliance, you would compare to the SPVHP numbers.
For Energy Cost Budget method or Appendix G analysis, you would use the
PTHP as your baseline system type, so you would use PTHP numbers as your
baseline efficiency.
Hope that helps! Cheers,
Elizabeth
*Elizabeth Gillmor PE, BEMP, LC, LEED AP*
*e n e r g e t i c s **consulting engineers, llc*
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