White Goods Cycle Time

firefox1956

Our Bosch dishwasher & washing machine both have what you might call an 'Eco' setting.
In one case it is claimed it uses 66% less power on this setting.
Both machines take around 3 times longer to complete a cycle on Eco.
Faffing on for over 3.5 hours.
How come it can save energy when the machine is running for longer ???
TIA

suki1964

my dishwasher is the same, the Eco wash is an hour, the 60oC wash is 20 mins

[Deleted User]

firefox1956 wrote: »

Our Bosch dishwasher & washing machine both have what you might call an 'Eco' setting.
In one case it is claimed it uses 66% less power on this setting.
Both machines take around 3 times longer to complete a cycle on Eco.
Faffing on for over 3.5 hours.
How come it can save energy when the machine is running for longer ???
TIA

Possibly they are running on cold (or cooler) water, and then increasing the cycle time to compensate for less effective cleaning. The saving would all depend on how much power the motors and pumps use, against how much water there is to heat.

EssexExile

It takes four things to get better washing:

More time
More temperature
More agitation
More (powerful) detergent

The last two damage things, heat costs money, & damages things if you go too far, time is cheap. It uses less energy to run the motor for longer than to heat the water more.

getmore4less

Have a read of the rules for the ratings.

longer cycles use less water and less energy by by using a lower temp.

so the 60deg full cotton load is not at 60.
by using short washes the enzymes won't have time to do their stuff.

we use longer washes and don't have an issue, there is no faffing around the load and unload times are the same we go do something else while the machine does it stuff.

most have a "delay start/finish my wash at" option so if you need to be able to empty at a certain time just use that.

can still do 4 full load wash dries in a day and it is only about 10-15mins doing stuff with the machines.