I just discovered that for the past three or so months my washing machine has been hooked up backwards with the hot water hose going to the cold spiggot and the cold to the hot. The guys who delivered it also hooked it up. In their defense the spiggots are in the opposite order than you’d usually expect with the hot one to the right of the cold.
All those loads I washed on cold/cold in order to save energy? Accomplished exactly the opposite. This probably helps explain those higher than expected utility bills I’ve been getting.
The hoses have been reinstalled properly and now the spiggots have nicely printed labels so the next folks to come along don’t suffer the same fate.