383toast
3 months ago
summary:
The creator argues that most dishwashers are designed to use a pre-wash dose and a main wash dose of detergent, a fundamental often ignored by single-dose pods, and presents independent ASTM testing confirming the new powder matches or exceeds the performance of a leading premium pod. The video also features a detailed demonstration using temperature logging and peanut butter to stress the importance of purging cold water from the hot water supply line before running a dishwasher, particularly in North America, to ensure the water reaches the optimal enzymatic temperature needed for effective cleaning. This is further reinforced by showing how adding pre-wash detergent dramatically improves the initial cleaning phase, especially with fats and oils.
losvedir
3 months ago
This has been his stance for a long time. He has a lot of dishwasher videos for some reason!
One thing I can't get a good answer to is whether the "prewash" step is universally the case or not. I have a good Bosch dishwasher and there's no compartment for a bit of pre-wash detergent. I don't even know if my dishwasher cycle has a pre-wash step. I would assume the dishwasher manufacturer knows what's best.
The owner's manual gives advice about not pre-rinsing the dishes because the food bits actually help the wash cycle, so I'm wondering if it works differently from the two-step process in this video.
totallymike
3 months ago
What your manual says is common to most dishwashers.
You can tell if your dishwasher has a pre-wash cycle if it does a short run, then you hear it draining, and then it does a longer full run. I expect it probably does.
Also, you can always add a bit of detergent to the main compartment of the dishwasher for prewash. The normal detergent compartment has a lid so the the detergent stays dry until the main wash cycle, and most prewash compartments are just an open tray.
Come to think of it, if there is a latching door on the detergent tray, your dishwasher definitely has a prewash cycle, or else they’d skip the door entirely
felbane
3 months ago
> Come to think of it, if there is a latching door on the detergent tray, your dishwasher definitely has a prewash cycle, or else they’d skip the door entirely
Alec also mentions this briefly in the linked video; if manufacturers could avoid the cost of a latching mechanism, they absolutely would. Its presence means a pre-wash cycle exists.
badc0ffee
3 months ago
The default program on my Miele pops the door open like 2 minutes into the cycle. Maybe the slower ones don't?
tonymet
3 months ago
his dishwasher detergent videos are a good example of an "improved" product being more expensive and less effective (like disposable razors).
With better understanding you can achieve far better results. I no longer rinse or even scrape dishes. with the right approach my dishwasher performance has been stellar. The user manual also includes proper tuning to local water hardness levels.
Poor dishwashing also discourages people from cooking at home, which leads to less healthful diets. So it's an important thing to get right.
Dishwashing is fascinating.
gpt5
3 months ago
I find his videos to have quite a bit of hand waving and poor methodology together with being overly verbose.
For example, he kept on saying that pods are not better in previous videos, but in the study he presented in this video, it showed that pods are performing significantly better than powders in every category. The study (which was not linked and I couldn't find it) was sponsored by a powder maker which the video recommends, but even this study showed just on par results with pods.
totallymike
3 months ago
He does mention that a number of manufacturers aren’t making powders at all anymore, and also suspects out loud that they just aren’t trying with their powder detergents anymore, or are not bothering to apply improvements to their formulae to the powder form because manufacturers would rather sell the powders anyway.
He also specifically calls out Great Value brand powder as one he finds to be consistently on par with pod performance
kiwijamo
3 months ago
That has not been my experience with pods. When we switched back to powder the difference was night and day. Even my husband who used to swear by pods eventually gave in and agreed powder is much better. It is a bit fiddly yes but powder getting 99.9% of our dishes getting cleaned on the first run sealed the deal for us -- previously we were always having to add dishes to the next run or falling back to doing it manually. What makes it even more intersting is that even the cheapest powder beats every brand of pods etc we've tried. And we have a shitty cheap dishwasher that came standard with our new build house.
warkdarrior
3 months ago
Nobody expects better results from a higher-priced product!
user
3 months ago
tonymet
3 months ago
I agree with that
kxrm
3 months ago
I have a Bosch as well, i sprinkle a bit of powder on the door. It has a pre-wash run which goes quick.
The manual is likely referring to not hand rinsing dishes before loading them which was very common 30 or 40 years ago. I had to train my Mother to stop doing that.
kjkjadksj
3 months ago
I still rinse dishes because it keeps the trap from getting absolutely filthy in one load.
rekabis
3 months ago
> I still rinse dishes
This! I mean, at least get all of the low-hanging fruit with a quick, needle-spray pass of hot water. And to do so while the plates are still fresh so that stuff hasn’t had the time to dry.
Like, we’re talking about powering through table settings for a half-dozen people at a family dinner in less than 60 seconds. Plates, bowls, cups, silverware; everything done in about 10s per person. This isn’t any kind of a deep scrub; it’s removing everything that will come off easily as fast and expediently as possible before the dishes go into the washer.
woodpanel
3 months ago
Pods have become so ubiquitous that many companies ditched that powder compartment altogether. But you don't need one anyways just pour it into the cabin.
The video explains why there always is a pre-wash step. Regardless of whether it comes with a pre-wash-powder compartment or not. I will try his solution.
tonymet
3 months ago
it's inverted. the closing soap compartment is the washing step, the pre-wash tray contents can just be dumped.
pineaux
3 months ago
I have installed several dishwashers for friends and find them fascinating. All of the ones I have seen basically dumped the contents of the closing soap compartmens as soon as it started washing. Some dishwashers (looking at bosch) even have a little tray in the upper drawer that catches the pod.
fsckboy
3 months ago
omg thank you. my dishwasher has a prewash compartment so it's fine, but my clothes washer has a prewash step but no prewash detergent place. this elegant solution never occurred to me
tguvot
3 months ago
video can explain anything, but reality is different.
my dishwasher manual breaks down each program. pre-wash exists only in half of programs
Scaevolus
3 months ago
Find a PDF manual for your dishwasher. It generally will describe if it has a prewash.
Johnny555
3 months ago
The owners manual for my Bosch 500 says prewash detergent is not necessary. But it does have a prewash cycle as I can hear it draining before the main wash.
Note: This dishwasher provides the optimum cleaning performance without the use of a prewash detergent and further enhances our standards of sustainability and efficiency.
brewdad
3 months ago
I keep my Bosch set to Auto and Extra Dry and use Kirkland pods. Rarely do I have anything that comes out less than perfect.
The Extra Dry setting seems to help with getting the glass and ceramics dryer. Plastics still come out quite wet since it uses a hotter final rinse rather than a heating element to get dishes “dryer”.
inferiorhuman
3 months ago
I have a previous generation Bosch 500 series dishwasher. For my use case I get the best results with the heavy cycle. However I found that adding loose detergent in there for the "prewash" resulted in soapy residue being left on the dishes if used in conjunction with the heavy cycle (but not with the normal and auto cycles).
Alec's dishwasher videos are based on some rather primitive dishwashers. For instance he talks about his test unit not flushing out the spray arms, but Bosch/Siemens filters the water going to the spray arms so it wouldn't recirculate dirty water anyways. Same deal with the prewash. Bosch uses a turbidity sensor to determine how many "prewash" cycles to run and when to reuse the water, something his test unit very clearly does not.
seec
3 months ago
Yeah, I think one has to understand the man to really get something useful of what he says. He is kind of a cheap man and much of what he says really applies to low-end devices. Some expensive devices may have similar problems to the cheaper stuff but really if you buy a premium device you won't have many of the problem he talk about.
I know this type of person very well. They always have some reductionist approach to things, where for them, the expensive stuff is mostly marketing with added bells-and-whistles and largely works the same. My experience is that this isn't quite right. Some brands do have a premium that is more related to style/status but if you buy some seriously engineered stuff it will work much better most of the time.
inferiorhuman
3 months ago
He's a midwesterner so some of that's to be expected. But AFAIK KitchenAid is one of the higher end Whirlpool brands. I just checked the orange big box store and the price difference between the KitchenAid dishwasher lineup and that of the Bosch 300/500 series comes down to what's currently on sale.
For reference I'm pretty cheap too but try to be pragmatic. My fridge is a $600 Frigidaire (AEG/Electrolux) top freezer unit. The main selling point was that another youtuber (an appliance repair guy by trade) pointed out that it still has a mechanical timer. They get mocked by appliance sales droids but the top freezer design is significantly more efficient than the alternatives and the lack of electronics mean that you're more likely to be able to repair it.
beAbU
3 months ago
> He has a lot of dishwasher videos for some reason!
He is known as Angry Dishwasher Man for a reason.
abracadaniel
3 months ago
If the detergent container has a door, then that means the soap is dispensed later, which means there is a pre-wash stage it’s trying not to waste the detergent on.
badc0ffee
3 months ago
I have a Miele dishwasher. Not only is there no place to put prewash powder, but I can hear the little door for the detergent pop open like 2 minutes into the cycle when on the default program.
This dishwasher also came with a box of Miele pods (and they encourage you to buy more). I think it's designed first and foremost to not use powder.
ThePowerOfFuet
3 months ago
>This dishwasher also came with a box of Miele pods (and they encourage you to buy more).
This is because the profit margin on them is much, much fatter. Miele still makes powder if you want to use theirs.
metabagel
3 months ago
Perhaps there is an indentation on the outside of the detergent dispenser where you are meant to pour a bit of detergent for the pre-wash.
Like in the video: https://youtu.be/DAX2_mPr9W8?si=Njn749InqNCbjhQd&t=822
Kirby64
3 months ago
Nope, Bosch 800 series specifically do not have an indentation, and also state in their manual that they do not require any prewash detergent and the prewash does not run with any detergent.
red-iron-pine
3 months ago
> He has a lot of dishwasher videos for some reason!
have you watched his videos? dude is on the spectrum.
to be clear, he makes good vids. but his fascinations exist for a reason.
tentacleuno
3 months ago
It always seems a shame when naturally clever people are assumed to have autism, or when their cleverness is attributed to it. Why can't someone just be intelligent without labels?
93po
3 months ago
it doesnt feel nice to try to dismiss someone's interests and hobbies as "they're autistic"
TheGoddessInari
3 months ago
Reductive and inaccurate.
suprjami
3 months ago
Thanks for the summary.
American dishwashers don't have their own heater? All dishwashers I've seen in Australia only have cold water supply.
mrandish
3 months ago
Some US washers don't but many do. However, US washers tend to not heat water as quickly or to as high of a temp. The video cites two reasons: 1. US power being 110V vs 220v. 2. US dishwasher heating elements being limited to 800 or 1000 watts because many are designed to potentially share one 20A residential circuit with an oven and/or fridge due to possibly being retrofitted into a kitchen built before built-in dishwashers were standard and manufacturers not wanting to create different models for retrofit vs new installs.
masklinn
3 months ago
> share one 20A residential circuit
15, dishwasher manufacturers can't assume the dishwasher is on a 20.
dylan604
3 months ago
This plus the comment about sharing a circuit with an oven. If the oven is electric, even in the US it is 220v. If it is gas only, then it could be 120v as it only needs to run the igniter and other circuitry without running any heating elements.
fsckboy
3 months ago
in traditional times it was customary to buy a few outfits high quality clothing that would last, and wear the same clothes for a week at a time, and then really boil them clean. This is the European market.
post world war 2 consumer choice culture in the US led to people buying cheaper clothing but varying their outfits every day and cleaning them (with copious availability of water) with less intensity.
once these patterns are established in the market, they become more like customary and it's what consumers expect of their appliances, detergents, etc.
beerandt
3 months ago
3) manufacturers placing energy star improvement quotas over safety in programming the cycles.
lawlessone
3 months ago
The energy star stuff isn't unique to US dishwashers though.
Rebelgecko
3 months ago
American dishwashers are typically hooked up to hot water. Some will have heaters but they're not that powerful and they may only run for the main wash cycle
brianwawok
3 months ago
Not true. Dishwashers get cold very often.
sgerenser
3 months ago
American dishwashers are always hooked up to the hot water supply. It’s right in the installation manual, and I’ve never seen one that wasn’t.
tenacious_tuna
3 months ago
...what's not true? I can't tell what you're disagreeing with.
totallymike
3 months ago
I can’t speak to Australian dishwashers, but trying to skip the video by catching a summary has failed you. Heating is discussed extensively in the video
reaperducer
3 months ago
American dishwashers don't have their own heater?
Some do, some don't.
The ones that do vary in ability by overall dishwasher quality.
The ones that don't are hooked up to the kitchen's hot water line.
This is considered more energy efficient because a home's hot water heater (whether electric, gas, or another fuel) is better at heating the water in a bulk capacity than a tiny heater in the dishwasher.
The downside is that the cold water between the big water heater and the dishwasher has to be purged first for it to be really effective. If your hot water heater is in the other side of the wall, no problem. If it's six rooms away, problem.
WheatMillington
3 months 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
3 months ago
Hot 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
3 months ago
My 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
3 months ago
Watch 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.
ninkendo
3 months ago
Also, I’m way too lazy to look it up right now, but I’m quite certain I’ve heard of dishwashers that run the hot water for a little bit before letting it fill the basin. Like, I’m pretty sure this sort of thing is commonplace.
It’s not like the engineers for heaterless dishwashers are just too stupid to realize there’s an obvious workaround for having to purge the line before filling the basin. Especially when the performance is so much measurably better when you do it.
Like I said though, it’s a guess. It’s also possible efficiency certifications ding you for the excess water use.
seanmcdirmid
3 months ago
Most of the new ones (at least higher end ones?) have heat pumps that heat water and handle drying. They are efficient enough to work on 110V, and the trade off is longer cycle times. Bonus: no more plastic utensils melting because they fell to the bottom resistive heating elements.
vel0city
3 months ago
A dishwasher cycle is usually only going to run for a specific period of time. Its more effective it if starts that time closer to the proper temperature rather than relying on waiting for the heater to get the temperature up to that time. Especially on the pre-rinse cycle, where the heater may or (probably) many not engage.
WheatMillington
3 months ago
Same in NZ, never seen a dishwasher with a hot water connection.
kiwijamo
3 months ago
The video explains that dishwashers sold in 110V countries often has a hot water connection as it's too slow heating water off a 110V/10A circuit so it is more efficent to utilise the hot water pipes. However we live in NZ, a 230V country so we get dishwashers that can heat water from cold fine off a 230V/10A circuit so no need for a hot water connection.
seanmcdirmid
3 months ago
Modern heat pump dishwashers will heat water on 110V just fine, but you are looking at 3 hour wash/dry times anyways. My Bosch isn’t connected to hot water and even has a sanitize mode.
Titan2189
3 months ago
If you check the manual you might find that you can hook the single inlet pipe up to the hot water tap.
SchemaLoad
3 months ago
I feel like it's probably pointless. The dishwasher will be full of water before the hot water starts coming out the pipe. Depending on how far the dishwasher is from the water heater I guess.
devilbunny
3 months ago
They do. I didn't realize this until my natural gas supply company decided to replace my meter on a Friday. Without alerting me ahead of time so that I could, you know, plan to be gone while my house had no hot water.
Whenever natural gas supply is turned off in the US, for any reason, only the gas company can turn it back on. And they can't do so if there's a leak at all. You have to call a plumber to come out, detect the leaks, and fix them. After that, you can call the gas company to come back out (but not on a weekend) to turn it back on. And a same-day request for service requires someone to be home ALL DAY after it's called in.
And this is how I ended up showering at work for three days that week after not having had one over the weekend.
ajb
3 months ago
My parents used to have an old cooker which rather than having a spark button, had individual pilot lights for all of the hob burners and the grill. My mother was forever worried about whether one of the damn things had gone out (which they occasionally did). I think if you switched the supply off, switched it on again, and someone has left their house for a week, it might build up a significant amount of gas. Although they are supposed to be small enough not to. Presumably there were hardly any of those left now, but they can't assume they're all gone.
jojohohanon
3 months ago
Pilot lights are often designed so that the heat from the flame holds a bimetallic switch in the open position. Should the light go out, the bimetallic switch will shut as it cools.
bdavbdav
3 months ago
That is an insane solution to the problem. I’d rather put a match to it.
Freedom2
3 months ago
> Whenever natural gas supply is turned off in the US, for any reason, only the gas company can turn it back on
Doesn't match my experience. My colleagues and I are able to turn on or off the gas supply to our houses at will.
teepo
3 months ago
often around here in texas, when the gas is turned off due to an issue, the gas company disables the meter, or even removes or bypasses it. And I live in gas land, where we have natural gas piped in to the kitchen, bathrooms, laundry, outside for grills, as well as the furnace. We've seen it a lot, if you call the gas company about smelling gas, they come and remove your gas meter until you hire a plumber to go find the leak.
Johnny555
3 months ago
>Whenever natural gas supply is turned off in the US, for any reason, only the gas company can turn it back on
I had a seismic shutoff installed at my gas meter and the plumber who installed it had no problem turning off the gas and turning it back on when he was done. (and then turning it off again to demonstrate to me how it worked).
He re-lit the water heater pilot light before he left. The gas company was not involved at all.
thomascountz
3 months ago
As an American expat, I will use this story to explain some of the indignities of living in America. Thank you for sharing.
devilbunny
3 months ago
Every country I have ever discussed with its residents has something that, on its face, is a reasonable safety precaution (I definitely don’t want to blow up my house), but in practice is just a way to make your life miserable while helping the people who work there have an easier day.
This just happens to be the one that affected me. Like modern gas water heaters that have electric ignition instead of pilot lights, because the one serious reason to have gas water heaters is that they work when there is no electricity. Now it’s just a price distinction.
user
3 months ago
macintux
3 months ago
> And this is how I ended up showering at work for three days that week after not having had one over the weekend.
I discovered the unexpected value of a YMCA membership when my hot water was offline for a while.
mvdtnz
3 months ago
Sorry how is this story relevant?
alvah
3 months ago
This has always struck me as dumb, as until recently it was far cheaper to use your existing (gas-fired) hot water than to use a resistive element. However, with gas going out of fashion (and already hugely expensive in the Eastern states), and abundant solar PV, the calculus has changed.
selcuka
3 months ago
The problem is that the first few litres of the water coming from the hot water pipe may be cold or warm. Therefore adding a resistive element is a better solution to guarantee a specific temperature.
seanmcdirmid
3 months ago
Gas (especially just in time) still works well for water heating even if you can use heat pumps for everything else. No sure when that will flip, I assume it will eventually.
alvah
3 months ago
Gas is already outlawed for new builds in Victoria, despite vast gas resources in the Bass Strait. Presumably that's the direction other states are heading too.
midnitewarrior
3 months ago
They do, but they are generally confined to 10 amps, so they do not heat quickly.
graemep
3 months ago
My fairly cheap dishwasher in the UK has its own heater, but you can attach it to a hot water supply, which may save money as gas is so much cheaper than electricity.
fsckboy
3 months ago
traditionally (in household washing machine time) US houses were large and had a lot more hot water capacity for the whole house, and putting a heater into individual appliances was not necessary/cost effective.
retrofitting old traditional houses (especially stone) with higher capacity plumbing was expensive and infeasible, so putting heaters in appliances was a cope for markets that needed it.
mattclarkdotnet
3 months ago
Quite, another thing to add to the list of USAian weird exceptions.
woodpanel
3 months ago
I've micro-optimized my dishwasher setup to have all my 100+ pods and other in-bulk dishwashing-chemicals stored in a compartment between my two dishwashers.
I'm also firmly in the camp of having a flat cutlery compartment at the top and not that inefficient, and uncivilized, scarring, basket in bottom section.
Until seeing that video I thought I was crazy. I've found my master.
koolba
3 months ago
You have two dishwashers in one kitchen?
tzs
3 months ago
I recall reading, I think in a comment here long ago, of someone who did that. He had just enough items to fill one dishwasher. By having two he could use one for storage and one for cleaning, with the two alternating roles.
I.e., he started off with all his things clean and in dishwasher A. As he used things he pulled them from A and put them in B. When B is nearly full and A is nearly empty, run B, move any remaining items from A to B. Then B becomes the storage space and A becomes the place to put the dirty items.
woodpanel
3 months ago
Yes, i do. The idea was that it keeps the kitchen cleaner, because there's no more gross kitchenware that didn't made it into the dishwasher. Always wanted that. Then saw it in practice at a startup once, and then finally gave it a go.
There will be instances when both are just full and you still end up visible filth, but even then, you at least have to go just once into clear-out mode. It works out great so far. If it didn't... well, I guess I'd need to buy a third one ;-)
buzzardbait
3 months ago
Just in case one of them asks for a divorce
matt-attack
3 months ago
I never understood the requirement for having to preheat your pipes. The dishwasher has access to a hotline, and a drain. Why wouldn’t it just run the hot water for 60 seconds to ensure it has maximum heat. This would just be a software feature, and cost nothing on their part.
It seems so arcane for the operator to have to do this before running a cycle
Telaneo
3 months ago
There are regulations on water usage for dishwashers. That purge would eat into its water usage.
Yes, purging the cold water manually does exactly the same thing. We live in a flawed world.
tmsh
3 months ago
Interestingly the Gemini summary is nowhere near as good. But when it is... how helpful will that be! So many things with a very good summary will save so much time / avoid having to dive into unless truly in need of the details.
But the quality of the summary - and maybe the ability to expand it if slightly more details are required - and the low latency with that - are all super important. In that sense, AI can potentially save a lot of time in getting the right information quickly.
alvah
3 months ago
I summarise YT videos with Gemini all the time. You can easily control the length and depth of the summary & get it to focus on particular things etc, before investing time in watching it, only to find out it's promotional, superficial, clickbait, or some combination of all 3.
poutrathor
3 months ago
Does Gemini really does a good job at detecting promotional video ? For example, that one video discussed in this post is one huge promotion for his friend product but it is actually built in a way that clearly appeals to nerdy audience. The video boasts the rigorous testing, provides scientific explanations, nerdy jokes, etc. What Gemini says about that ?
alvah
3 months ago
I don't directly ask it if the video is promotional, but you can usually get a sense from the way the summary is written.
tmsh
3 months ago
Good to know! Thanks.
tguvot
3 months ago
i have miele dishwasher with detergent powder cartridge that allows dishwasher to dispense it at will. it never used during pre-wash cycle in any of the programs that dishwasher has.