Electric Space Heating:

air-source heat pump, ground-source heat pump, boiler, packaged space heating

Natural Gas Space Heating:

boiler, furnace, engine-driven heat pump, absorption heat pump

Fuel Oil Space Heating:

boiler, furnace

Electric Space Cooling:

air-source heat pump, ground-source heat pump, reciprocating chiller, centrifugal chiller, rooftop air conditioner, residential style central air conditioner, window unit

Natural Gas Space Cooling:

absorption chiller, engine-driven chiller, rooftop air conditioner, engine-driven heat pump, absorption heat pump

Electric Water Heating:

electric resistance, heat pump water heater, tankless water heater

Natural Gas Water Heating:

natural gas water heater, tankless water heater

Fuel Oil Water Heating:

fuel oil water heater

Ventilation:

small Constant Air Volume (CAV) system, large CAV system, small Variable Air Volume (VAV) system, large VAV system, fan coil unit, multi-zone CAV system

Electric Cooking:

range, convection oven, deck oven, fryer, griddle, other electric

Natural Gas Cooking:

range, range w/power burner, deck oven, fryer, infrared fryer, griddle, infrared griddle, other

Incandescent Style Lighting:

incandescent, compact fluorescent, halogen, halogen-infrared, coated filament, hafnium carbide

Four-foot Fluorescent Lighting:

magnetic ballast, electronic ballast, electronic w/controls, electronic w/reflectors, scotopic, electrodeless

Eight-foot Fluorescent Lighting:

magnetic ballast, electronic ballast, magnetic-high output, electronic-high output, scotopic, electrodeless

High Intensity Discharge Lighting:

metal halide, mercury vapor, high pressure sodium, sulfur

Refrigeration:

centralized refrigeration system, walk-in cooler, walk-in freezer, reach-in refrigerator, reach-in freezer, ice machine, refrigerated vending machine