3 ms·
Dishwashers typically do this, but generally not clothes washing machines.
by LargeWu 8y ago
Dishwashers typically do this, but generally not clothes washing machines.
- cimmanom 8y agoDo they? My dishwasher pulls from both the hot and cold water lines. This is evidenced by the fact that although usually one has to run either tap for 2-3 min to get non-tepid water, when the dishwasher is running both taps dispense water of extreme temperature instantly.
- refurb 8y agoMost dishwashers have a heating element in the bottom that is used to both dry the dishes but also heat the water/keep it hot during the wash cycle. If you pull hot water from the heater and circulate it around for 30 min, it's not going to be that hot at the end of the cycle.
- cimmanom 8y agoI guess it depends on whether you're more concerned about water efficiency or energy efficiency. If you're OK with not reusing the water, the building's water heater (especially in a multi-unit dwelling) is going to be larger and thus more energy efficient (also possibly slower, providing large quantities by dint of its tank) than the smaller heating element in a dishwasher. And you can just trickle a little bit in throughout the cycle to keep it hot.
- refurb 8y agoDefinitely. Heating water with an electric element isn't all that efficient at all compared to say a gas water heater.
- gambiting 8y agoI think you got the terms mixed up here - electric heating is far more efficient(for every 1kWh of energy used, almost all of it goes into heating water) than using gas, but electricity is also more expensive so even taking account lower efficiency of gas heating it's usually cheaper anyway.