Heating water in a washing machine as an alternative during seasonal hot water shutdowns is possible but may not be the most efficient method, according to experts. While the process involves diverting the washing machine’s drain hose into a bathtub and running a hot wash cycle without laundry, plumbers advise against it due to its inefficiency.

The machine functions as a flow-through heater, but it also drains cold water during rinsing cycles, which dilutes the heated water. An expert noted that a significant amount of electricity is used to heat a relatively small volume of water per cycle, making it less practical than other options.

Ultimately, experts recommend using alternative heating solutions like water heaters rather than relying on a washing machine for hot water during shutdowns. While the method is technically feasible and safe, its low efficiency and high electricity consumption make it a less desirable choice.