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 Money
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dishwasher energy saving tips Dishwashers
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30kWh -
90kWh
£4.62 -
£13.86

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11.01kg -
33.03kg
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Run the machine full and less often

boil less water in kettle energy saving tips Boiling Water
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82kWh -
164kWh
£12.628 -
£25.256

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30.09kg -
60.19kg
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Boil only what you need. Savings depend on how much tea you drink!

fridge freezer energy saving tips Fridge Freezers
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50kWh -
400kWh
£7.7 -
£61.6

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18.35kg -
146.8kg
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Fridge maintenance. Savings depend on size, age and rating

dmoney saving tips tumble drying Tumble Dryers
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90kWh -
350kWh
£13.86 -
£53.9

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33.03kg -
128.45kg
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Operate Less often, clean filters, part dry clothes?

differnce in cost of shallow or deep bath Baths
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700kWh -
1400kWh
£30.1 -
£215.6

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147kg -
513.8kg
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Have shallower baths and consider how you heat water

change energy supplier to save money Change Supplier
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0kWh -
0kWh
£0 -
£500

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0 -
0
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save money and have a beerSwitch! This is the single simplest way of saving money. This is equivalent to 100 pints of beer!

shower or power shower which is cheaper Shower of Power Shower
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120kWh -
1100kWh
£18.48 -
£242

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25.2kg -
403.7kg
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Aviod immersion heated power showers

save money and energy with good loft insulation Install Loft Insulation
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3000kWh -
3750kWh
£129 -
£161.25

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630kg -
787.5kg
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Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

save money and energy with good loft insulation Improve Loft Insulation
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1000kWh -
1500kWh
£43 -
£64.5

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210kg -
315kg
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Modern loft insulation in a 3 bed semi - these numbers are for Gas, savings are greater for other fuels

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Washing up Vs the dishwasher

Last Updated on Saturday, 14 October 2017 12:19





Which is the cheapest? The diswasher or the sink?

dishwasher vs hand washing

Believe it or not but several studies have been carried out to compare the energy and water consumption of washing up by hand with using a dishwasher. The research shows that dishwashers generally use significantly less water than washing up by hand. Whilst it is difficult to compare actual costs due to variations in washing up habits, the studies concluded that provided the dishwasher is fully loaded and the economy programme is used it will be more energy efficient than washing up by hand and therefore cheaper.

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+1 # Dishwasher v Washing UpIan 2011-11-17 20:12
Eh, not so fast. According the the Government's 2008 (Update) Study (see BNW16: A comparison of manual washing-up with a domestic dishwasher) as part of the Market Transformation Programme using a dishwasher is more water efficient if 'compared' with washing up if you are cleaning over 3 place settings. As far as energy consumption is concerned it is only more efficient when being used for over 9 settings. The water efficiency was also based on an assumption that someone doing the washing up changes the water every 1.5 settings. It acknowledges that it has made these assumptions based on no understanding of how people wash up.

My own research over the last two nights revealed that whilst the dishwasher was on night before last (for over an hour) it averaged over 1 khw of electrical energy. Whilst in the 15 minutes of washing up I did last night, I used about 30 w of energy, and 1 bowl of water!
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+1 # Dishwasher v Washing UpRichard 2011-11-18 10:39
Hi Ian

I'm sure you have a point here, peoples habits are all important. In your own research I have to correct one or two errors, and they are common mistakes, seen them many times.

You cannot say it “averaged 1khw of electrical energy” in this context ( and I assume you mean kWh – kilo Watt hour). You can however have an average power consumption of the dishwasher during its cycle and this probably is 1kW. Total energy is the power delivered over a period of time. So if the dishwasher was on for 1 hour this would be 1kW multiplied by 1 hour to give 1 kWh, it it were on for 30 minutes the total energy consumption would be 0.5 kWh.

For your bowl of washing up again 30w of energy does not make sense. As an example; If it takes lets say 2 litres of boiled water diluted with cold to get the perfect bowl of washing up water. Then to keep the calculation simple consider a 2 litre kettle, boiling that water. The power consumption of a powerful kettle is 3kW and it will take about 4 minutes to boil the water, it will consume 3 x 4/60 or about 0.2 kWh of energy to heat the water to fill the sink.

Have a look at this link on boiling kettles
www.which.co.uk/.../faqs

So in energy terms to use the same as a dishwasher you would have to use 5 bowls of water, and if you are just using one, then you are using less energy. I think a full dishwasher load would be several bowls.

For me, I hate washing up nearly as much as ironing, so it has to be the dishwasher or the kids!

Cheers

Richard
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