Table : Features of Fuel Switching Groups Heating Fuel Heating Equipment Water Heating Group n % Location After Existing Existing Switch Base Case Upgrade Case Switch Oil or propane Gas boiler with Oil or Conventional gas On-demand gas boiler Group A 49 27% Gas gas service propane storage heater water heater Oil or propane Gas furnace furnace DHP* with Oil, propane, or existing boiler biomass boiler Oil, Electric backup Towns with propane, with DHP* with Existing water Heat pump Group B 65 36% Oil, propane, or gas service electricity, Existing existing furnace heater heater biomass furnace or biomass Backup backup DHP* with electric Electric resistance resistance backup DHP* with Oil, propane, or existing boiler biomass boiler Oil, Electric Towns with backup DHP* with propane, with Oil, propane, or Existing water Heat pump water Group C 20 11% no gas existing furnace biomass furnace electricity, Existing heater heater service backup or biomass Backup DHP* with electric Electric resistance resistance backup with Gas Sites 46 26% No switch No switch No switch gas service * stands for heat pump,” or ductless “DHP” “ductless
Table : Features of Fuel Switching Groups Group n % Location Heating Fuel Heating Equipment Water Heating Existing After Switch Existing Switch Base Case Upgrade Case Group A 49 27% with gas service Oil or propane Gas Oil or propane boiler Gas boiler Conventional gas storage heater On-demand gas water heater Oil or propane furnace Gas furnace Group B 65 36% Towns with gas service Oil, propane, electricity, or biomass Electric with Existing Backup Oil, propane, or biomass boiler DHP* with existing boiler backup Existing water heater Heat pump heater Oil, propane, or biomass furnace DHP* with existing furnace backup Electric resistance DHP* with electric resistance backup Group C 20 11% Towns with no gas service Oil, propane, electricity, or biomass Electric with Existing Backup Oil, propane, or biomass boiler DHP* with existing boiler backup Existing water heater Heat pump water heater Oil, propane, or biomass furnace DHP* with existing furnace backup Electric resistance DHP* with electric resistance backup Gas Sites 46 26% with gas service No switch No switch No switch * “DHP” stands for “ductless heat pump,” or ductless
R15_Single-Family%20Potential%20Study_Review%20Draft_9-05-14.docx