State Specific Applications
For Oregon, the measure requires an HSPF 10 or greater DHP in addition to a high efficiency water heater that complies with Conservation Measure Option D of the 2017 Oregon Residential Specialty Code. Current Oregon code requires builders to select ONE Conservation Measure from a list in order to meet the energy efficiency code. Both DHPs and high efficiency water heaters are on the Conservation Measure list; therefore, this measure requires that BOTH these measures be installed in order to ensure that the home exceeds minimum energy efficiency code requirements.
Idaho & Montana
For Idaho and Montana, the measure requires an HSPF 10 or greater DHP be installed in the main living area of a new single-family home. The current unit energy savings assume a "single-head" DHP (with supplemental zonal electric resistance heat), but "multi-head" systems are also allowed.