Cost of running dishwasher

[JohnW2]

I do think its a mistake to transfer the landline system to digital. I bet the government bunkers are not digital phone lines.

Quite so.

 

[SUNRAY]

I wonder what it costs to run a bowl of hot water to wash up with? If I run a bowl full, that is really two bowls full, as need to run nearly a bowl of cold water before the hot water gets through. So would guess 0.4–0.5 kWh to fill the first bowl with water, the second bowl more like 0.2–0.3 kWh as the pipes now warm, so two bowls required as need to rinse the plates, and in my sink can wash around half the dishes which would fit in the dishwasher, so looking at 1.2–1.6 kWh to handwash the dishes.

Also, the handwashing will not be as good as using a dishwasher, as my hands could not stand the chemicals used in a dishwasher. I noted my parent's tea cups, and my wife's parent's tea cups, mine had a dishwasher hers did not, and her dads cups never seemed to be clean, to the point where she would bring her parent's cups to our house and run them through the dishwasher, and get rid of the brown coating, although not sure one should clean the cups, we say tea pots should not be cleaned.

I can't see people using a kettle, if they have the option of gas or oil heated domestic hot water. So with handwashing, it may well use gas or oil. Also, this guy View attachment 392092 from the USA did a video about dishwashers, and it seems in the USA they fill the dishwasher with hot water. I did have a dishwasher in the last house connected to hot water, I thought, now realise in error, that heating DHW with gas was cheaper.

some time ago I was able to do a comparison between a 10.5KW shower and combi boiler on prepay meters, despite all of the protestations on here the price difference was marginal, https://www.diynot.com/diy/threads/are-electric-showers-expensive-to-run.596162/ post#7. This was 2022 and I have not addressed it since so may be out of date.

However I have always advocated dishwashers are economical - well assuming the spec's are accurate and the early chemicals cleaned way better than I could but affected many products, especially glass. Certainly use less water.

As has already been said: As a back pain sufferer my biggest gripe with washing up in a sink is having to lean forwards and bend down to a sink that's too low for a six footer - easily for half hour after a dinner party.

 

[JohnW2]

Over 100 listed here:

Fair enough (even though I personally have never come across a hot-fill DW) but, as has been said, I'm not sure that makes much sense, unless the water is heated very close to the DW (which, I admit, may be the case with a combi)..

 

[Harry Bloomfield]

FWIW mine runs for 10 minutes and then another 10 minutes, 90 minutes later.

A similar timescale, between the heating sessions. I would hazard a guess, that the second short heating phase, was the heating of a tiny amount of water, just to steam the contents to dry it.

 

[ericmark]

Why wont the gas hob work

I don't have a gas hob, I was considering central heating, as to phones, found out the hard way, mobiles are no good for an emergency. When we had high winds, my central heating stopped working, as the EE mast was knocked out, so my central heating thought I was not at home, geo-fencing is now disabled.

some time ago I was able to do a comparison between a 10.5KW shower and combi boiler on prepay meters

Read your report, and is similar to my own findings, although with oil in my case, it's a not a modulating boiler, so running for 30 minutes I can say a 20 kW boiler has used 10 kWh. I was looking at the heating of the water in the cylinder with either oil or electric.

I wanted to compare gas with electric when living in mother's house, but her boiler modulated, and the meter was not in a good place to read. And oil, even harder to measure use, can only assume a 20 kW boiler used 20 kW of fuel oil. But have noticed how much the oil has not gone down.

 

[SUNRAY]

I suppose that depends upon how widespread the power cut is and the extent to which the mobile network masts/equipment have battery backup?

The two mobile phone sites I have radio kit in there is not a battery in sight any more, even the emergency generator inlets are being decomissioned.

 

[JohnW2]

The two mobile phone sites I have radio kit in there is not a battery in sight any more, even the emergency generator inlets are being decomissioned.

Interesting ... and a little silly/worrying!

 

[Munroast]

The two mobile phone sites I have radio kit in there is not a battery in sight any more, even the emergency generator inlets are being decomissioned.

so what are you saying here - if there is major power outages, there may be no way to communicate by phone ? mobile or landline

 

[Ollyfp]

My wife does it for free

Oh you'll pay for it one way or another! Lol

 

[JohnW2]

so what are you saying here - if there is major power outages, there may be no way to communicate by phone ? mobile or landline

That would appear to be what he's saying (at least in the vicinity of the mobile phone sites he mentioned) - as I wrote (in what is perhaps an understatement) "a little silly/worrying"

 

[Murdochcat]

so what are you saying here - if there is major power outages, there may be no way to communicate by phone ? mobile or landline

Obviously people with some iPhones could only call the emergency services using the satellite network - but if the outage is that bad would the receiving number be working at all?

 

[ericmark]

Used 1.08 kWh at 8.5p/kWh so 9.18p. The solar display

This

is where dish washer ran. I had intended to grab the Resent usage, but was in bed when my wife turned it on. Not looked on smart meter, can't see the display on that as being the slightest use.

So my dishwasher uses more than @Harry Bloomfield dishwasher, but I am recording all it used, not just heating water.

 

[Munroast]

how are you working out with any accuracy 1.8kwh from that chart

 

[ericmark]

how are you working out with any accuracy 1.8kwh from that chart

I am not,

the software is telling me. And yes, made an error, thank-you for pointing it out. So if I work out @Harry Bloomfield use he got 5.36 p at his rate, since I pay less =7/60*2*8.5 comes out to 1.983 p per wash. If done during off-peak at my rates, and cost be 9.18 p or 4.6 times more to do dishes with my dishwasher.

This shows peak used when the dishwasher was being used, it does not consider battery charging as consumption, so all items together I have around a 300–500 watt base load, so likely peak for dishwasher was 2 kW.

 

[Why Not Indeed]

Well I have crawled on the floor, and got the energy monitor plugged in, but as yet the dishwasher has not run.

Just for you Eric: