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Modeling a PTHP/PTAC IN BEopt 3.0.1.0

asked 2026-09-15 14:03:48 -0500

Crees1997's avatar

updated 2026-09-16 10:20:41 -0500

I am working on modeling a multifamily apartment unit that utilizes a GE HOTPOINT AHHS09D3XXA packaged terminal heat pump in BEopt 3.0.1.0. I am running into the following issues accurately modeling this equipment in BEopt since there is no direct PTHP/PTAC option:

  • This equipment utilizes ANSI/AHRI 310/380 rating standards (EER/COP), but both the ASHP and MSHP option in BEopt use SEER/HSPF ratings
  • The HOTPOINT has a single speed rotary compressor. The MSHP in BEopt are modeled as variable speed. While the ASHP has a single speed compressor option, it needs a duct input which this equipment does not have since it is thru-wall

Does anyone have a suggested approach on how to model this accurately?

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answered 2026-09-29 13:58:45 -0500

As you've discovered, BEopt doesn't currently offer modeling of PTHPs. It can model room air conditioners, which are similar to PTACs and use CEER/EER metrics, but that technology will not include heating and would be paired with a separate heating system (e.g., furnace or boiler).

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Asked: 2026-09-15 14:03:48 -0500

Seen: 225 times

Last updated: Sep 29