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4 Calculation
4
Calculation
4.1
Preface to the calculation
The costs which are calculated for the appliance are based on the operating costs of the
washing machine or tumble dryer connected. The operating costs comprise the costs of
the electricity and water consumed as well as of any service subscription.
Example calculation for a washing machine with an 8 kg load capacity
The values indicated below are average values. These can vary (depending on
local electricity tariffs and water rates as well as subscription costs) greatly.
Basis: Coloureds 60 °C without a pre-wash
Electricity costs
Electricity consumption
1.3 kWh
Water costs (incl. waste water)
Water consumption
65 litres = 0.065 m
Subscription costs (per year with 5–12 parties)
Service subscription (WM * CS)
CHF 249.00 + 89.00 = CHF 338.00
Operating costs per programme
Operating costs
CHF 1.18
4.2
Individual calculations
You will need the following details:
Item
Electricity consumption
Water consumption
litres)
Programme duration
Electricity tariff per kWh (incl.
peak and low tariffs)
1
In the absence of any individual components of the calculation, we recommend a
charge of CHF 1.00 per hour for washing and CHF 1.20 per hour for drying.
2
The calculation should be based on the example of the most frequently used pro-
gramme and carried out separately for each appliance. Ideally, select the main pro-
gramme «Coloureds 60 °C» without a pre-wash for the washing machine and the
«Standard dry» programme for the tumble dryer.
14
3
Per hour
×
60 mins
2
.............. kWh
2
(1m³ = 1000
................. m³
2
......... hr .........
CHF ..............
Electricity tariff
×
CHF/kWh 0.25
Water rate
3
×
CHF/m
4.60
Number of wash
cycles
÷
600
Programme duration
÷
70 mins
Source
From the operating instructions
From the operating instructions
From the operating instructions
Ask local electricity supplier
Electricity costs
= CHF 0.32
Water costs
= CHF 0.30
Subscription costs
= CHF 0.56
1
Charge
= CHF/hr 1.00
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