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JRW2
R.I.P. Mom, Brian, Gary, Ziggy, Max.
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join:2004-12-20
La La Land

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JRW2

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Which water supply for dishwasher???

My brother and I differ on which water tap to hook a dishwasher up to.
I am NOT going to say which I think it should be attached to and which he feels it should be connected to.

Cold or hot.

If you can, explain your reason why you choose that supply...

Thanks in advance..

DataDoc
My avatar looks like me, if I was 2D.
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join:2000-05-14
Hedgesville, WV

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DataDoc

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Hot, so it doesn't have to heat it itself.

robbin
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join:2000-09-21
Leander, TX

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Hot -- always wash dishes in hot. Yes, it has a heating element but that is just to boost the temp higher, not to heat it from cold.
LeeWL
join:2002-11-10
Morrisville, NC

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No question, it is hot water supply. Some cheaper dishwashers do not even heat the water they use.

Oh, BTW, the flexible hose needs to go to a drain somewhere for it to work as well.

DataDoc
My avatar looks like me, if I was 2D.
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A booster heater increases the temperature of the water entering the dishwasher to the 140ºF recommended for cleaning. Some dishwashers have built-in boosters, while others require manual selection before the wash cycle begins. Some also only activate the booster during the heavy-duty cycle. Dishwashers with booster heaters typically cost more, but they pay for themselves with energy savings in about 1 year if you also lower the water temperature on your water heater.

Da Geek Kid
join:2003-10-11
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according to manuals it is cold water as the dishwasher does its own heating... some may have dual where it allows you to connect both the hot and the cold...

SparkChaser
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join:2000-06-06
Downingtown, PA

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SparkChaser

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said by Da Geek Kid:

according to manuals it is cold water
What manual is that?

Ken
MVM
join:2003-06-16
Markle, IN

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said by Da Geek Kid:

according to manuals it is cold water as the dishwasher does its own heating... some may have dual where it allows you to connect both the hot and the cold...
No manual I have ever seen says that. Link or picture please.
wth
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Iowa City,IA

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Hot. And you should also run the kitchen sink hot water until the water is hot at the tap so (it's cheaper for your gas waterheater to heat the water than the electric element in the dishwasher.) B4 you start the dishwasher.

rob_in_chatt
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join:2004-09-17
Chattanooga, TN

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mine is plugged into the hot water side.

Robert
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join:2001-08-25
Miami, FL

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said by Ken:

said by Da Geek Kid:

according to manuals it is cold water as the dishwasher does its own heating... some may have dual where it allows you to connect both the hot and the cold...
No manual I have ever seen says that. Link or picture please.
Whirlpool Dishwashers also say its best to hook up to the cold water. Let me see if I can find a manual.

garys_2k
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join:2004-05-07
Farmington, MI

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garys_2k

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said by Robert:

Whirlpool Dishwashers also say its best to hook up to the cold water. Let me see if I can find a manual.
The Whirlpool manual for mine, model GU2500XTPB0, doesn't.
You must have:
> a hot water line with 20-120 psi (138-827 kPa) water
pressure.
> 120°F (49°C) water at dishwasher.
»shared.whirlpoolcorp.com ··· 5437.pdf

Robert
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join:2001-08-25
Miami, FL

Robert

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said by garys_2k:

said by Robert:

Whirlpool Dishwashers also say its best to hook up to the cold water. Let me see if I can find a manual.
The Whirlpool manual for mine, model GU2500XTPB0, doesn't.
You must have:
> a hot water line with 20-120 psi (138-827 kPa) water
pressure.
> 120°F (49°C) water at dishwasher.
»shared.whirlpoolcorp.com ··· 5437.pdf
When we installed ours, it said it was best to connect it to the cold water line, since it doesn't use hot water until a certain point, so it will heat the water itself.

Jon5
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Lisle, IL

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Like most of the others, I've only ever seen them hooked to the hot water side. That's also where I hooked up our new one and my mother-in-law's new one.
93388818 (banned)
It's cool, I'm takin it back
join:2000-03-14
Dallas, TX

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Hot side.
IAmTheEvilest
There Is Nothing Like A Restart
join:2001-01-03
Milpitas, CA

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Some dishwashers, such as those from Miele, should be connected to the cold water supply because they use the cold water to cool their stainless steel tubs to cause the hot moist air to condense onto the tubs thus causing the dishes to dry.

Frankg0
join:2005-03-09
Loudoun, VA

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Hot. GE stainless steel tub:

John97
Over The Hills And Far Away
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Spring Hill, FL

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We've got a Kitchenaid, all-stainless, inside and out. It's connected to a hot water tap as per the manual.
Ghostmaker
join:2003-01-20
Brunswick, OH

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Hot water to dishwasher. I'm currently a plumbing inspector working in Ohio.

bobrk
You kids get offa my lawn
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bobrk

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said by Ghostmaker:

Hot water to dishwasher. I'm currently a plumbing inspector working in Ohio.
What if the manual said to hook it up to the cold?
Tyreman
join:2002-10-08
Cambridge, ON

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Hot!
Unless super ceded by manual

jdong
Eat A Beaver, Save A Tree.
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join:2002-07-09
Rochester, MI

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said by bobrk:
said by Ghostmaker:

Hot water to dishwasher. I'm currently a plumbing inspector working in Ohio.
What if the manual said to hook it up to the cold?
lol that's the ONLY exception -- if the manual explicitly states to use cold water.

rogue_
I Have A Secret Window
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join:2001-10-17
Lake Hiawatha, NJ

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Wow.. Frigidaire here says cold water.
scooper
join:2000-07-11
Kansas City, KS
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Hot - unless the manual says otherwise !

Only problem for my house - the hot water takes almost a minute to get to the dishwasher / kitchen sink ! So, I put an EEMAX 9.5T electric tankless waterheater feeding the kitchen sink / dishwasher - so now I have hot water in 3 seconds - not 45 !

Subaru
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wow amazing how they all differ in how to hook the supply line up..

Warzau
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Naperville, IL

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RTFM of that particular Dishwasher, but all I've ever seen is hot line, including mine.

DataDoc
My avatar looks like me, if I was 2D.
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Hedgesville, WV

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Then do so.
Expand your moderator at work

MoJeeper
The Stig in 2012
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Re: Which water supply for dishwasher???

Bosch manual reads connect to hot water side and internal heater will heat water up to 161 deg.

I cant recall any dishwasher that didn't use hot water.
arwoodman
join:2007-08-30
Benton, AR

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You should follow your manual, however hooking up to the cold side is actually more efficiant than the hot side, if the machine is heating the water. I didn't believe this until someone told me to time how long it takes for room temperature water to boil vs. hot water. The cold water actually will boil faster.