Propane group proposes full-fuel cycle analysis to measure heating appliance efficiency
The National Propane Gas Association, among other groups, has been pushing for a full fuel-cycle measure of energy consumption for appliances at the federal level.
The Department of Energy sets energy-efficiency standards for appliances in residential and commercial buildings based on site measurements, or at the point of use. These energy-use standards, as well as operating cost information, are printed on yellow EnergyGuide labels (example pictured) attached to many consumer appliances, such as boilers and water heaters.