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Hot water from the house supply isn't that hot though? My dishwasher gets MUCH hotter than the hot water supply... and I don't think the heater is "tiny" I thin
by WheatMillington 1y ago
Hot water from the house supply isn't that hot though? My dishwasher gets MUCH hotter than the hot water supply... and I don't think the heater is "tiny" I think it's a rather substantial element. The dishwasher also doesn't need to heat up a "bulk" amount of water, just the amount of water used for washing the current load of dishes.
- reaperducer 1y agoHot water from the house supply isn't that hot though? Depends on how you have it set. My current and previous hot water heaters had thermostats which permitted adjusting the temperature. They also had warning labels on them about scalding water. If it's hot enough to scald, it's hot enough. The dishwasher also doesn't need to heat up a "bulk" amount of water, just the amount of water used for washing the current load of dishes. If you're washing dishes and someone is, or has recently, taken a shower; or someone is, or has recently, done laundry; or someone is, or has recently shaved or done any of the other dozen things that draw from the hot water heater, then the water is already hot and available and doesn't need to be heated all the way from cold by the dishwasher. A properly insulated hot water heater can retain heat for quite some time.
- nomel 1y agoMy cheap GE dishwasher uses a hot water line, but also has an internal heating element to "boost" it, and help dry. My electric bill definitely suffers if cold water is used.
- db48x 1y agoWatch the video; it makes a huge difference even though the hot water input is not as hot as the water can get when the dishwasher runs its heating element. Also the size of the heating element is irrelevant. What matters is the power dissipated. Most dishwashers in the US will use only about 900 watts of power even when plugged into a circuit that supports 1500 watts. In the EU they often hit 3000 watts. Even when just heating up a gallon or two of water that makes a huge difference.
- seanmcdirmid 1y agoModern dishwashers, especially in Europe, are using heat pumps as well. They don’t really benefit from the extra voltage and watts anymore.
- db48x 1y agoSure, but most people don’t have a modern dishwasher. It’s an appliance that lasts 20 to 30 years ergo most people have old dishwashers that were manufactured decades ago.
- seanmcdirmid 1y agoYa, but eventually the new tech will take over and we will be talking about very different things. Even if you just consider new builds, or hundreds of millions of Chinese buying their first dishwasher ever. Also, lots of utility districts offer incentives to upgrade to more efficient appliances.
- sgerenser 1y agoI think you’re confused, heat pump dishwashers are extremely rare even in Europe, and basically unavailable in the U.S.
- seanmcdirmid 1y agoThat’s not true at all. Bosch is mostly heat pumps, and they are a top consumer brand in both the USA and Europe.