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Shorter or colder showers? Here you save more money

Electronic instantaneous water heater: Taking a shower is so expensive

Water heating with an electronic instantaneous water heater is still common practice in many rented apartments. This results in the following costs for daily showering:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,88 Euro 0,35 Euro 1,23 Euro 449,09 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,85 Euro 0,35 Euro 1,20 Euro 437,57 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,82 Euro 0,35 Euro 1,17 Euro 426,05 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,77 Euro 0,30 Euro 1,08 Euro 392,96 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,66 Euro 0,26 Euro 0,92 Euro 336,82 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,71 Euro 0,28 Euro 0,98 Euro 359,27 Euro

Gas heating: That’s how expensive showering is

If you heat your water for the shower with a low-temperature boiler for natural gas, the costs are as follows:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,91 Euro 0,35 Euro 1,26 Euro 458,38 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,88 Euro 0,35 Euro 1,22 Euro 446,53 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,84 Euro 0,35 Euro 1,19 Euro 434,67 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,80 Euro 0,30 Euro 1,10 Euro 401,08 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,74 Euro 0,26 Euro 0,94 Euro 343,79 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,73 Euro 0,28 Euro 1,00 Euro 366,71 Euro

Condensing boiler (natural gas): That’s how expensive showering is

If you use a condensing boiler for natural gas to heat the water, the costs are as follows:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,61 Euro 0,35 Euro 0,95 Euro 347,73 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,58 Euro 0,35 Euro 0,93 Euro 339,83 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,56 Euro 0,35 Euro 0,91 Euro 331,93 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,53 Euro 0,30 Euro 0,83 Euro 304,27 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,45 Euro 0,26 Euro 0,71 Euro 260,80 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,49 Euro 0,28 Euro 0,76 Euro 278,19 Euro

Low-temperature boiler (heating oil): That’s how expensive showering is

If you heat your water for the shower with a low-temperature boiler for heating oil, the costs are as follows:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,97 Euro 0,35 Euro 1,32 Euro 482,09 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,94 Euro 0,35 Euro 1,29 Euro 469,39 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,90 Euro 0,35 Euro 1,25 Euro 456,69 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,85 Euro 0,30 Euro 1,16 Euro 421,83 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,73 Euro 0,26 Euro 0,99 Euro 361,57 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,78 Euro 0,28 Euro 1,06 Euro 385,67 Euro

Condensing boiler (heating oil): That’s how expensive showering is

Do you use a condensing boiler for heating oil for hot water preparation? Then the following costs arise for the shower:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,65 Euro 0,35 Euro 1,00 Euro 363,54 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,63 Euro 0,35 Euro 0,97 Euro 355,07 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,60 Euro 0,35 Euro 0,95 Euro 346,60 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,57 Euro 0,30 Euro 0,87 Euro 318,10 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,49 Euro 0,26 Euro 0,75 Euro 272,65 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,52 Euro 0,28 Euro 0,80 Euro 290,83 Euro

District heating: Taking a shower is so expensive

If the hot water is heated via district heating, the following costs arise:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,40 Euro 0,35 Euro 0,74 Euro 271,86 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,38 Euro 0,35 Euro 0,73 Euro 266,67 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,37 Euro 0,35 Euro 0,72 Euro 261,47 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,35 Euro 0,30 Euro 0,65 Euro 237,88 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,30 Euro 0,26 Euro 0,56 Euro 203,89 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,32 Euro 0,28 Euro 0,60 Euro 217,49 Euro

Heat pump: That’s how expensive showering is

If you heat your water for the shower with a heat pump, the costs are as follows:

measure energy costs per day water cost per day total cost per day Total cost per year for daily showers
Water temperature: 38 degrees Celsius. Duration of shower: 8 minutes 0,34 Euro 0,35 Euro 0,69 Euro 251,63 Euro
Water temperature: 37 degrees Celsius. Duration of shower: 8 minutes 0,33 Euro 0,35 Euro 0,68 Euro 247,16 Euro
Water temperature: 36 degrees Celsius. Duration of shower: 8 minutes 0,32 Euro 0,35 Euro 0,66 Euro 242,68 Euro
Water temperature: 38 degrees Celsius. Duration of shower: 7 minutes 0,30 Euro 0,30 Euro 0,60 Euro 220,17 Euro
Water temperature: 38 degrees Celsius Shower duration: 6 minutes 0,26 Euro 0,26 Euro 0,52 Euro 188,72 Euro
Water temperature: 38 degrees Celsius Duration of shower: 8 minutes and economy shower head 0,27 Euro 0,28 Euro 0,55 Euro 201,30 Euro

Conclusion

The comparison shows that it is more expensive to take a longer shower than to take a slightly higher shower temperature. If you also install a shower saver head and thus reduce the amount of water poured out – i.e. the amount of water that flows out of the shower head per minute – you can save even more.

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