Calculator for Saving Heating Costs
Calculates how much energy and costs are saved by heating the home a certain number of degrees Celsius less. Or how much energy it costs to heat a certain temperature higher. About 6 percent of energy is saved for every degree Celsius less. On the other hand, if you heat your home by one degree more, you use six percent more energy. Heating two degrees warmer requires 12.36 percent more energy.
The formulas for calculating at 6 percent per degree Celsius are:
Saving factor = 0.94degrees less
Additional cost factor = 1.06degrees more
Please select − for less degrees or + for more degrees and enter a value for the temperature. The energy consumption beforehand (e.g. in kWh or euros) can be entered, but does not have to be. The percentage difference per degree can be adjusted if necessary.
Example: if you heat the apartment and the warm water 2.5 degrees Celsius less, you need 14.3 percent less energy. If you used 3000 kilowatt hours before, it is now 2570 kWh.
Turning down the room temperature is the easiest way to save on heating costs. If you're cold, you can of course dress warmer, but this will come at the expense of comfort. And after all, you don't want to sit around at home in thick winter clothing. You can also heat rooms to different levels depending on how often they're used. A lower temperature is recommended for the bedroom anyway, usually between 16 and 19 degrees. Thicker duvets or two blankets on top of each other allow for lower temperatures, but here, too, it's important to find the right balance.
A completely different issue with old heaters is whether replacing them with more efficient heating methods is worthwhile. Professional advice is generally recommended here.
Last updated on 06/30/2025. Author: Jürgen Kummer
Here you can convert metric units into customary and imperial units and convert temperature units.
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