I'm using the latest version of ResStock and buildstockbatch to run some electrification analyses in Maine.
Is the Propane Tankless option a condensing or non-condensing equipment model?
This affects the propane heating value (LHV or HHV) I choose for calculating annual operating cost and emissions.
It's hard to determine condensing vs. non-condensing just by looking at the EF rating in the measure arguments. For example, the Natural Gas Premium, Condensing option has an EF of 0.82, which is a bit low for a condensing model. Despite that I assume this option is a condensing model because it is explicit in the Option Name.
Advice on the Propane Tankless option would be great.
P.S.
For furnaces, an AFUE of > 90% would indicate a condensing model. Is there a similar cutoff rule-of-thumb for water heaters and Energy Factor?
