How much hot water does a dishwasher use?
 

I have a standard dishwasher in my kitchen. I am curious how much hot
water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.

The instruction manual I have for mine...over 10 years old...says how
much mine uses for the different cycles.

Harry Everhart wrote:

I have a standard dishwasher in my kitchen. I am curious how much hot
water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.

"Harry Everhart" wrote in message
...
I have a standard dishwasher in my kitchen. I am curious how much hot
water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.


I've seen wildly varying figures from 2 to 20 gallons, but the newer ones
seem to be closer to 5. The maker seem to be vague on the matter.

From the Whirlpool web page:
Do I use more water hand washing or using a dishwasher?
You use 2 times as much water by hand-washing dishes. It
costs about 15 cents per load to use your dishwasher and about 2 cents per
load to use the dry cycle.





From www.joe.org
The average water use per dishwasher cycle decreased from a
range of 11-15 gallons per normal cycle in 1978 (Garrett, 1978) to 6-10
gallons per normal cycle in 2000 (Soap and Detergent Association [SDA],
2000). Despite the fact dishwashers are designed to be resource efficient,
other significant determining factors on resource usage are the result of
decisions of the consumer.

wrote in message
...
The instruction manual I have for mine...over 10 years old...says how
much mine uses for the different cycles.


That's good to know. How does that help the OP though? Most manuals today
do not give that information.

He didn't say which one he has. He didn't say that he read the manual and could
not find any information. He really didn't give much information now did he?

Edwin Pawlowski wrote:

wrote in message
...
The instruction manual I have for mine...over 10 years old...says how
much mine uses for the different cycles.


That's good to know. How does that help the OP though? Most manuals today
do not give that information.

Harry Everhart wrote:
I have a standard dishwasher in my kitchen. I am curious how much hot

water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.

Hi,

I have a standard dishwasher in my kitchen.

That doesn't narrow it down much :(
Make, model#??
http://www.applianceaid.com/model.html
Some model# helps.

I am curious how much hot
water it uses to do a load of dishes.

Makes, models will vary from d/w to d/w. The use&care manual that came
with the d/w may have the gallons per cycles used ( EG: rince and hold,
Reg, Pots and pans, etc ).

jeff.
Appliance Repair Aid
http://www.applianceaid.com/

in any case, its not all that much.

randy

"Harry Everhart" wrote in message
...
I have a standard dishwasher in my kitchen. I am curious how much hot
water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.

wrote in message
...
He didn't say which one he has. He didn't say that he read the manual and
could
not find any information. He really didn't give much information now did
he?


No, he did not, but your answer was no help at all was it? When I was
buying a new DW last year I checked a few manuals from different bands that
I was considering. Not one of them had water use ratings. If you had said
my old machine state it uses from 5 to 7 gallons, depending on cycle, that
would have been of some use. Most brands have manuals available on line if
you care to check them out.

"Harry Everhart" wrote in message
...
I have a standard dishwasher in my kitchen. I am curious how much hot
water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.


Have you checked Consumer Reports? They sometimes give info like that.
If you want to really know then unhook the drain tube and run a load into a
couple of 5 gal buckets. Repeat for each of the different cycle options.
Probably be interesting to do even if you did find the manufactures claims.
Are you more concerned with just water usage or 'hot' water consumption? If
I anticipate running out of hot water from showers and laundry etc., then I
will run the dishwasher last. My DW will heat the incoming water with the
heating elements if not hot enough.

Kevin

Harry Everhart wrote:

I have a standard dishwasher in my kitchen. I am curious how much hot
water it uses to do a load of dishes. The dishwasher was bought less
than a year ago.

I saw this info yesterday and it took me awhile to figure out where I
saw it. Here it is:

http://tinyurl.com/4qzcr
The info comes from:
http://www.aquaamerica.com/

/J
--
ASC: Born to Herf '05: http://www.geocities.com/borntoherf/sponsors.htm
RCTY F.O.s: http://tinyurl.com/64dq5
Moon Garden Blog: http://moongarden.tblog.com/

Two things fill the mind with ever new and increasing wonder and awe -
the starry heavens above me and the moral law within me. - Immanuel Kant

If the OP would let us know which brand/model he has, I think someone
here might be able to check and find out. They vary from about 3.5 gal
to 11 gals for a normal cycle, entirely dependent on the particular
unit.

"Edwin Pawlowski" wrote:
I've seen wildly varying figures from 2 to 20 gallons, but the newer ones
seem to be closer to 5. The maker seem to be vague on the matter.
From the Whirlpool web page:
Do I use more water hand washing or using a dishwasher?
You use 2 times as much water by hand-washing dishes. It
costs about 15 cents per load to use your dishwasher and about 2 cents per
load to use the dry cycle.

Thanks Ed -
I am sorry I was not more specific. The dishwasher is a Whirlpool Gold
that I installed in 2004. I was in bed and could not go check the model
last night :-)

The reason I am asking is because I am planning to replace two big
electric water heaters - with maybe one one or two smaller gas or
electric units. My kitchen is on one end of a 90 foot house and my
bathrooms on the other end. But through poor engineering - the water
heater near the kitchen services the bathrooms on the other end of the
house.

I am planning to put one tankless water heater right next to my shower
and then run a 1/2 insulated line "up and over 100 feet" to the sink and
dishwasher in the kitchen.

Another option is to put one of those little 2.5 gallon water heaters
under the sink next to the dishwasher. Just a thought. It is foolish for
my wife and I to be heating two giant tanks of water - 24 hours a day -
for two shower - a load of laundry - and a load of dishes.

Harry

Jenn Vanderslice wrote:
http://tinyurl.com/4qzcr

Dear Jenn -

Thanks for that web page. Here is the info I requested that I got from
the web page -

Activity
Gallons Used

Shower
20-50 (5-10 per minute)

Tub Bath
36 (Full)

Toilet Flush
5-7

Tooth Brushing
2 (tap running)

Hand Washing
2 (tap running)

Shaving
3-5 (tap running)

Dish washing
20 (tap running)

Automatic dishwasher
10-15 (full cycle)

Clothes washer
30-60 (full cycle)

Outdoor watering
5-10 (per minute)

Thanks,
Harry

How much water does a dishwasher use? How many miles per gallon does a
car get.

"Edwin Pawlowski" wrote in message
m...

wrote in message
...
He didn't say which one he has. He didn't say that he read the manual
and
could
not find any information. He really didn't give much information now did
he?


No, he did not, but your answer was no help at all was it? When I was
buying a new DW last year I checked a few manuals from different bands
that
I was considering. Not one of them had water use ratings. If you had
said
my old machine state it uses from 5 to 7 gallons, depending on cycle, that
would have been of some use. Most brands have manuals available on line
if
you care to check them out.



I bought a Whirlpool less than an year ago and the book has the water usage
in it. It is under the cycle selection charts. It uses from about 6 to 11
gallons of water depending on the settings.
It also gives the times of usage. Around 70 to 90 min.

"Kevin Ricks" wrote:
Have you checked Consumer Reports? They sometimes give info like that.
If you want to really know then unhook the drain tube and run a load into a
couple of 5 gal buckets. Repeat for each of the different cycle options.
Probably be interesting to do even if you did find the manufactures claims.
Are you more concerned with just water usage or 'hot' water consumption? If
I anticipate running out of hot water from showers and laundry etc., then I
will run the dishwasher last. My DW will heat the incoming water with the
heating elements if not hot enough.
Kevin

Hi Kevin -
I am concerned about hot water only. I have two 50 gallons water heaters
- one by kitchen - one on the other end of the house by laundry. The one
in the kitchen serves two bathrooms 90 feet away. I know it is stupid -
but I bought the house this way.
I plan to put one new tankless water heater right next to the bathrooms
and maybe run an insulated line up and over to the kitchen. The kitchen
has a sink and dishwasher - that is all. I was thinking maybe an under
sink water heater could serve the sink and dishwasher.
I am just in the planning stage. I hate waiting 90 seconds for hot water
in the bathrooms. :-) I also hate that I am heating 100 gallons all the
time for two showers - a load of clothes - and a load of dishes daily.
I know - I have too much time on my hands :-)
Money is no object within reason. Also the utility company will give me
$450 for each electric water heater I replace with a gas one.
Harry

Thanks Ed -
I am sorry I was not more specific. The dishwasher is a Whirlpool Gold
that I installed in 2004. I was in bed and could not go check the model
last night :-)


Look under the cycle selection charts. That is the unit I installed about
the same time. It uses about 6 to 11 gallons depending on the cycle.
Mostly around 11 gallons for normal loads.

"Ralph Mowery" wrote:
I bought a Whirlpool less than an year ago and the book has the water usage
in it. It is under the cycle selection charts. It uses from about 6 to 11
gallons of water depending on the settings.
It also gives the times of usage. Around 70 to 90 min.

Thanks Ralph -
I will use 11 gallons as a guide per load. If that is the case - then a
2.5 gallon electric water heater will not serve it well. I presently
have a 50 gallon water heater serving just a kitchen sink and dishwasher
- silly - I know. I want to replace it.
Harry

Your dishwasher may have a heater built in to get the water to the temp
desired, mine does and it is older.

"m Ransley" wrote in message
...
Your dishwasher may have a heater built in to get the water to the temp
desired, mine does and it is older.

My washer specifies incomming water to be atleast 120 deg F. It is then
heated to 140 to 160 deg F depening on the cycle used.

I would assume most washers would have internal heaters to get the water hot
enough. The recommended setting for the house water heater is usually less
than 130 deg F.

"Harry Everhart" wrote in message

Yes - it has a electrode in it that glows. Does that mean I can just use
cold water and it will heat it up to the proper temperature?
Harry

Not advisable. It is to boost the temperature of already heated water to
proper temperature and it does not heat it for every cycle so you'd have
cold rinses. If you have a more efficient way of heating water than
electricity, that is a cost factor also.

Harry Everhart wrote:

(m Ransley) wrote:

Your dishwasher may have a heater built in to get the water to the temp
desired, mine does and it is older.


Yes - it has a electrode in it that glows. Does that mean I can just use
cold water and it will heat it up to the proper temperature?

No. The heater is turned on for a fixed length of time depending on the
cycle selected. The water will get as hot as it gets in that time.
There is no thermostat.

"Edwin Pawlowski" wrote:

Hi Edwin -
I guess I have too much time and money on my hands :-)
I am retired.
I bought a house about 90 feet long with two water heaters - one on each
end. They are each 50 gallons each. All the pipes are in the slab.
My problems -
1. I must wait 90 seconds before I have hot water in the bathrooms -
they are served by a water heater 90 feet away through a 3/4 copper
buried in the slab.
2. I am keeping 100 gallons of water heated for two people - in one day
- we each shower at about 10 AM - then do one load of laundry at 11 AM -
then do a load of dishes at 6 PM. That's it.
3. The second 50 gallon water heater - which is next to the bathroom -
serves one thing - a clothes washer - isn't that stupid?
Everything works fine. I just want to correct those problems.
You will thing I am really nuts when I tell you I have a 20 x 40 x 8
swimming pool and a hot tub - heated by a 400,000 BTU gas heater.
Long story - they were in the house when we bought it.
Harry

"Harry Everhart" wrote in message
1. I must wait 90 seconds before I have hot water in the bathrooms -
they are served by a water heater 90 feet away through a 3/4 copper
buried in the slab.
2. I am keeping 100 gallons of water heated for two people - in one day
- we each shower at about 10 AM - then do one load of laundry at 11 AM -
then do a load of dishes at 6 PM. That's it.


Perfect candidate for the instnad point of use heater. Keeping that 100
gallons hot is costly and wasteful.

Even with a built in internal dishwasher heater - Running a cold water
pipe to a dishwasher is not advisable. Depending on the model it will
either take excessive time to complete the wash cycle while the water
heats up, or it will just plain not clean the dishes properly.

In a residential situation, usually one big hot water heater is better
than two medium size ones. The point-of-use heaters are more
expensive, trickier to install and adjust, and require venting to the
outside (for the non-electic models). You may find that a single
point-of-use may not be the most economical solution for one
dishwasher.

Beachcomber

the OP needed to supply some additional information since there are many
differnet dw on the market and they may vary in the amount of water they use.
My post suggested to the OP to read the manual. If he had posted..'I read the
owners manual and it doesn't say how much it uses..' then I wouldn't have
posted my message Richard.

Edwin Pawlowski wrote:

wrote in message
...
He didn't say which one he has. He didn't say that he read the manual and
could
not find any information. He really didn't give much information now did
he?


No, he did not, but your answer was no help at all was it? When I was
buying a new DW last year I checked a few manuals from different bands that
I was considering. Not one of them had water use ratings. If you had said
my old machine state it uses from 5 to 7 gallons, depending on cycle, that
would have been of some use. Most brands have manuals available on line if
you care to check them out.

My Kitchen Aid just won`t start till its heated the water to its set
temp and dishes are clean. So I imagine cold would work but I never
tried it, It would be a good experiment.

Harry Everhart wrote:
"Ralph Mowery" wrote:
I bought a Whirlpool less than an year ago and the book has the water usage
in it. It is under the cycle selection charts. It uses from about 6 to 11
gallons of water depending on the settings.
It also gives the times of usage. Around 70 to 90 min.

Thanks Ralph -
I will use 11 gallons as a guide per load. If that is the case - then a
2.5 gallon electric water heater will not serve it well. I presently
have a 50 gallon water heater serving just a kitchen sink and dishwasher
- silly - I know. I want to replace it.
Harry

If this is a unit that can heat it's own water, than it's irrelevant (other than
the additional time it takes for the dishwasher to bring the water up to
temperature). Electric water heater vs. dishwasher heating the water...it's
all electricity.

How about reading the water meter before and after the wash cycle.
How many cubic feet of water = 1 gal?

"Keith S."
wrote:
How about reading the water meter before and after the wash cycle.
How many cubic feet of water = 1 gal?

Excellent idea - why didn't I think of that? :-)
Harry

Models very greatly on water use. Call the manufacturer. I'm told some use
as little as a couple of gallons. My guess is some models circulate the
same water.

"Keith S." wrote in message
news:EkC2e.30828$191.7832@trnddc02...
How about reading the water meter before and after the wash cycle.
How many cubic feet of water = 1 gal?

Hope no one flushes to toilet while the d/w is running! ;) :D

jeff.
Appliance Repair Aid
http://www.applianceaid.com/

Edwin Pawlowski wrote:
From www.joe.org
The average water use per dishwasher cycle decreased from a
range of 11-15 gallons per normal cycle in 1978 (Garrett, 1978) to 6-10
gallons per normal cycle in 2000 (Soap and Detergent Association [SDA],

The Magic Chef dishwasher we bought in 1977 had us asking the same
question in later years; the factory wrote us back that there was never
more than five quarts in the machine at any one time. I believe it had
four water cycles, so it used five gallons per complete wash.

It still did a passable job of washing when we gave it away during our
2002 move; needed one bottom seal kit, one soaking of the motor bearings
and shaft in oil after that, and one door seal kit its whole life. And
we didn't know any better and ran it on the liquid detergent.

--
I miss my .signature.

How much hot water does a dishwasher use?
 

replying to Harry Everhart, Mike Cline wrote:
harry wrote:

Thanks Ralph -
I will use 11 gallons as a guide per load. If that is the case - then a
2.5 gallon electric water heater will not serve it well. I presently
have a 50 gallon water heater serving just a kitchen sink and dishwasher
- silly - I know. I want to replace it.
Harry



I have a Whirlpool Gold dishwasher and 2.7 Gal under sink hot water
heater. What I have found is that the washer uses about 3 gallons per
phase of a cycle, but the phases are not evenly timed. The first rinse
cycle uses all the hot water, and the under sink unit has not quite
recovered by the time the wash cycle starts just several minutes later and
again uses all the hot water. Bottom line is that the washer gets enough
hot water though with some cold mixed in, but it does completely deplete
your hot water supply with each fill. By the way, the partial recovery
time for the 2.7 gallon water heater is only a minute or so before it will
start delivering small quantities of hot water again, for washing hands,
etc. Our washer has a rinse and wash fill in rapid succession, a long
wash period where it also additionally heats the water, and then one (or
two) final rinse cycles.

--

How much hot water does a dishwasher use?
 

On Monday, April 20, 2015 at 6:44:05 PM UTC-5, Mike Cline wrote:

replying to Harry Everhart


You replied to a 10 year old thread. You think Harry is still interested in finding out how much water his dishwasher uses?

How much hot water does a dishwasher use?
 

On Mon, 20 Apr 2015 23:44:01 +0000, Mike Cline
wrote:

replying to Harry Everhart, Mike Cline wrote:
harry wrote:

Thanks Ralph -
I will use 11 gallons as a guide per load. If that is the case - then a
2.5 gallon electric water heater will not serve it well. I presently
have a 50 gallon water heater serving just a kitchen sink and dishwasher
- silly - I know. I want to replace it.
Harry



I have a Whirlpool Gold dishwasher and 2.7 Gal under sink hot water
heater. What I have found is that the washer uses about 3 gallons per
phase of a cycle, but the phases are not evenly timed. The first rinse
cycle uses all the hot water, and the under sink unit has not quite
recovered by the time the wash cycle starts just several minutes later and
again uses all the hot water. Bottom line is that the washer gets enough
hot water though with some cold mixed in, but it does completely deplete
your hot water supply with each fill. By the way, the partial recovery
time for the 2.7 gallon water heater is only a minute or so before it will
start delivering small quantities of hot water again, for washing hands,
etc. Our washer has a rinse and wash fill in rapid succession, a long
wash period where it also additionally heats the water, and then one (or
two) final rinse cycles.


My Kenmore has "water heat" option. Seems like it would cost the same
to heat the water with a remote electric heater as it would to just
let the dishwasher do it itself. Heating the water adds a fair amount
of time to the cycle... I think around 20 to 30 minutes.

How much hot water does a dishwasher use?
 

Hi Kevin -
I am concerned about hot water only. I have two 50 gallons water heaters
- one by kitchen - one on the other end of the house by laundry. The one
in the kitchen serves two bathrooms 90 feet away. I know it is stupid -
but I bought the house this way.
I plan to put one new tankless water heater right next to the bathrooms
and maybe run an insulated line up and over to the kitchen. The kitchen
has a sink and dishwasher - that is all. I was thinking maybe an under
sink water heater could serve the sink and dishwasher.
I am just in the planning stage. I hate waiting 90 seconds for hot water
in the bathrooms. :-) I also hate that I am heating 100 gallons all the
time for two showers - a load of clothes - and a load of dishes daily.
I know - I have too much time on my hands :-)
Money is no object within reason. Also the utility company will give me
$450 for each electric water heater I replace with a gas one.
Harry

tankless have lots of downsides. your probably better off installing standard power vent gas tank units and add a recurcilate pump so you waste zero water. you puh a button when you need hot water and the pump turns on.

you have instant hot water when you turn it on

water heater manufacturers are moving to more fficent heaters, waiting a few months should get you the new more efficent design