This measure uses the same methodologies as the single family ASHP measure but uses manufactured home data from RBSA I and II as well as the manufactured home-specific SEEM calibration.
The conversion measure is the conversion from an electric forced air furnace to an 8.5 HSPF heat pump. Savings are based on weighted average results from evaluations. Heating zone 1 savings have been set to Proven while heating zones 2 and 3 are considered planning due to varying results across fewer evaluations.
The upgrade measure is upgrading from an 8.5 HSPF heat pump to either a 9.0 HSPF heat pump or a variable capacity heat pump.and savings are based on calibrated SEEM runs. Similarly to Conversions, savings for an upgrade to a 9.0 ASHPs in heating zone 1 are set to Proven while upgrading to a 9.0 ASHP in heating zones 2 and 3 or to a variable capacity heat pump is set to Planning due to less certainty in modeling of SEEM for those zones and general uncertainty around VCHPs.
In a recent 2019 update the RTF opted to develop only an “any insulation” measure and to remove measure identifiers for good, fair, and poor insulation for both upgrades and conversion measures. That update also incorporated the previously independent measure for Variable Speed ASHP Upgrades.