Amazing.

[washerdude]

We did a little experiment with our kenmore 15113 dishwasher yesterday. From the day we bought it, we never ran hot water before starting it and cycle times would be really long almost 3 hours sometimes. We really didn't see the need for doing that. Yesterday, we ran hot water before starting it and guess what, the wash cycle alone was only 95 minutes (Without heated dry. With heated dry (32 Minutes) would bring the cycle time around 127 minutes. IMHO, this is really good. Not to mention how clean they came out. Now, i'm starting to like this thing more.

 

[washerdude]

I think what im going to do next is turn off heated dry and insted turn on either hi-temp or sani rinse.

 

[murando531]

Running the hot water first is crucial for these newer eco dishwashers. I think because the heating elements are at a much lower power. With my PowerClean being a little older, it actually works better if I don't run the water first because it will temp hold to heat the wash water, extending the main wash time to let the detergent do its work. In newer machines, the wash cycles are already so long that the detergent has plenty of time to be effective, but having to heat the water will make for a much more annoying cycle time for the user.

I think you'll like trying the Hi-Temp Wash option, or the Sani Rinse. You can always use both if you want for a super heated super clean cycle, but the options combined will probably put you into the 3-4 hour range. I'm sure picking just one will leave excellent results, and when the machine is done just prop the door open just a little and they'll flash dry after being so hot, which to me is better on the machine and the dishes, plus saves money and time.

 

[logixx]

According to the instruction manual, Sani Rinse already incorporates a High Temp wash.

 

[ea56]

I purchased a new GE MOL dishwasher in Jan. this year. I have found that running the hot water first and using the normal cycle with hi temp boost gets everything spotlessly clean in 135 mins., consistantly. This is the same amount of time that my previous 10 yr. old MOL Maytag took, and there were always some items that weren't clean. Within min. after opening the door the dishes are dry just by nature of the residual heat. When I used the heated dry it took over 3 hrs. and its really not necessary.

 

[appnut]

My Kenmore Elite with high temp wash option selected runs about 2:45 minutes.  My water heater is set at 120 at most.  With sani-rinse selected, cycle time is abut 20 to 25 minutes longer.  And yes, selecting sni-rinse also incorporates high-temp wash.  I think the longest wash cycle ever was a totally filthy pots & pans load with all options selected.  Ran for 3:48. 

 

[washer111]

I run our tap hot at home simply because the water is heated by the sun, not gas, electricity or anything else. So it pays to save the wear and tear on the dishwasher (Besides, it still works out to save electricity, with water costs factored in).
The results are generally no different, aside from drying, which I'll explain below:

Our machine (DishDrawer) doesn't shorten the cycle times as a result of this, as the temperature of the wash phase is only boosted about 10ºC more than room temperature (about a 20ºF raise).
For the rinses, I run the tap again. The machine will retain the temperature, to a maximum of 50º (122F) - as thats what the water is tempered.
Although, if I've run a very hot cycle, the machine stays hotter. This often results in the Final (Heated) Rinse not being heated... Generally, if the temperature of the machine is within 5ºC (inclusive) of the target, the heater does not engage*

I think only the Normal/Normal Eco, Heavy/Heavy Eco and Fast/Fast Eco cycles shorten things if the temperature is reached sooner than expected.
The Normal cycle should wash for about 35 minutes, but only washes for 26 in every instance I've noted (whether cold inlet or not). I can usually stop the Eco variant of this cycle (Which washes/rinses at 104/40C) from heating at all!
The Heavy Cycles often don't heat the final rinse water, due to the higher temperatures retained from the wash.
Fast Cycles don't shorten much more than a minute or two.

*This is observed with a diagnostic display mode, which will display temperature in the units for your country

 

[mark_wpduet]

I always run hot water before running dishwasher

but what usually happens with me, I usually have something to clean by hand first, like the cat water dish or running dish soap and water to clean the counters, so I usually don't just run the hot water and let it run, I actually use the faucet for something else so that the water is already hot, then when the water is off at the faucet, I then turn the dishwasher on....that way I don't feel like I just wasted water trying to wait for the water to get hot.

I think my Maytag runs about 90 to 100 min's with the cycle auto clean, tough scrub, hi temp no heated dry..

 

[arbilab]

For a "smart" machine, clearing the lines of cold water would be a very simple function. Including sensing when to terminate the flush to only what is needed. But I seldom if ever see it implemented.

 

[logixx]

Some earlier Whirlpools did that on their One Hour Wash cycle: if the temp was too low, an extra prewash was added to purge the lines.

 

[henene4]

Any liter the washer consumes is accounted to its usage. So its a no-no on Eco cycles.

But as far as I know, some DW in the US do 2 short prewashes before the actual main wash begins. This somewhat well flushes the lines and uses the water that otherwise would go down the drain.