Apparently pre-rinsing confuses the dishwasher or something. Not doing it leaves me with residue all over the other dishes though π€·
this post was submitted on 13 Oct 2026
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I was ready to riot if I didn't see TC in the comments.
I was shocked that I had the opportunity to post it, to be honest.
Itβs funny cause i was just talking about this video the other day with someone who didnβt know you have to run the tap hot before starting the machine. Itβs just such a good video.
That was fantastic, thanks!
Some of the key things were to put separate powder in for the pre-wash (mine doesn't have a separate pre-wash section as far as I can tell), and to not put so much detergent in. We have soft water, and apparently that means if you fill the thing up (or use a tablet/pod) then you might be using too much detergent which means it might not all come off in the final rinsing stage.
mine doesnβt have a separate pre-wash section as far as I can tell
Then you can just dump the pre-wash detergent directly in.
Yeah I got that from the video, just throw it in since it's the first cycle anyway.
Use prewash detergent
Powder detergent only for both washes
Stack the dishwasher according to the manual
Don't leave your dishes for a week before putting them in the dishwasher
You can only choose one of the four
I hate these commercials and I find it funny that they pay money to run them in my country where we have so much water we're practically drowning. We drink tap water and we leave the tap running for a quite some time just to get nice cold drinking water.
I could not give a damn about saving tap water. The dishes are rinsed before they go in the dishwasher.
This is a classic example of an American company assuming everyone else in the world think exactly like them, and subsequently completely fail with their marketing, at least in my part of the world.
Do you run the water in your sink until itβs hot before turning on the dishwasher? Most kitchens are set up so they use the same water line, and starting with cold water if you donβt do it will make it clean worse.
That's a thing with diswashers in North America, but not in Europe. In Europe, dishwasher are almost always connected to the cold water line only. OP seems to be posting from New Zealand, I don't know how they handle it.
It's handled like that in North America, because their mains electricity doesn't output enough juice to operate a water boiler at a reasonable speed:
https://en.wikipedia.org/wiki/Mains_electricity_by_country
So I imagine, in pretty much the rest of the world, it works like you described for Europe...
Confirming, connected to cold water here in NZ.
Ah, hello fellow Technology Connections viewer!
Interestingly, where I live I have never, ever seen a dishwasher installed with a hot water line. Even the cheapest dishwashers heat their own water, and around here we apparently always plumb them to the cold water for some reason, even though I'm sure plumbing to hot water would at least save time if not get better results.
I'm the opposite. All I've known is direct connection to the household hot water tank. The dishwashers all have a "Heat Boost" option which activates an element inside to add more heat if you want, but generally hot water tanks are kept about 57Β°C, I've never in my life used the heat boost setting. That's for sterilization.
I just watched through the video someone else posted, and connecting to the hot water line seems to be a North America thing. Presumably due to the 110v power supply taking a really long time to heat.
Obligatory obstinance: if that was important to the process why does the machine not handle it?
That said, I do run the water until it is hot. Typically to wash the dishes that require hand washing like my nonstick pans.
It can, but the water heater in your building/house is a better heater than the dinky one built in to the machine
It can depend on your dishwasher.
Fancier ones have heating elements to control the temperature.
Are you adding detergent to the pre rinse, or are you just throwing in one of those crappy packets?
Just watched the video someone else posted. My machine doesn't have a pre-wash section as far as I can tell, but I'll throw some extra powder into the bottom for the pre-wash cycle and see how it goes.
Yp, started doing that and it worked in mine. You'll need to do some trial and error to get the right amount, but TC is right.
I swapped $40 pods that gave me 80 loads for $8 powder that lasts hundreds
Indeed! They got it right with powdered dishwasher soap in the first place.
When I was living in a trailer I used an organic pre wash solution that used no water and was 100% eco friendly to save water. Highly reccomend the heeler pre wash
Looks like there's something wrong with your dishwasher. I've had this effect once on one that couldn't heat up the water any more.
It depends a bit on what exactly the residue is you're talking about, but usually it's grease that wasn't properly picked up by the water, just redistributed among your dishes. That is usually because the dishwasher detergent did not properly activate, which in turn is usually because the water does not get hot enough. (Never mind some fats also just stay solid at room temperature.)
A properly working dishwasher does not leave any residue on your dishes.
Melted cheese and dried egg yolks are two things that even commercial dishwashers have trouble with.
Whelp, time to break out the industrial dishwasher.
Whats the difference?
This just feeds the dishes to a woodchipper for easy disposal so you can buy new dishes.
Magnificent, what will they think of next?
I usually just wash it twice and it works.
But back when I washed dishes at Cracker Barrel I remember having to scrape that crap off βcleanβ dishes.