Would a fuel economy figure for a new home be useful for potential buyers?

The average American spends about the same amount of money on home heating and cooling as they do on fuel for their vehicles.

By now, everyone is familiar with EPA fuel economy figures and most people at least think about them when they purchase a car.
Imagine if homes came with a figure for the fuel economy of their heating and cooling plant. For example: my home gets 8 HDD (Heating degree days) per gallon of heating oil. If it’s near freezing, 32F for 24 hours, that means my HDD is, 65–32 = 33. It will take about 4 gallons of oil to heat the house. The heating season where I live is about 6100 HDD so I could expect to use ~760 gallons in a season. Would that be useful for someone comparing homes?
Obviously homes that heat with electricity or natural gas would have different numbers.
A qualification test could be run with the T-stat at a fixed temp, say 65F, and be preformed on the model homes, open to the public. All it would take is an hour meter on the burner and a record of the weather. An inspector would check it when they do the Certificate of Occupancy.
Of course, mileage would vary from household to household but this would represent an average value that could be used for comparison. It would be like the EPA fuel economy test that is driven over 23 cycles on representative vehicles. Nobody gets those number exactly but they are useful for comparison purposes.

If you knew the fuel economy figure you could see how much you gained by shutting off a room, or adding insulation in the attic, or turning down the T-stat a degree or two.

Or does nobody care? Is the world filled with people like those we see on HGTV: “I need a kitchen with stainless steel appliances.”

Would you use that number if it was listed with the home’s information?