Works out which part of your water and heating costs can be removed — how much water and energy that is per year, depending on the heat source the related emissions too, and how quickly the measure pays back. The result comes out as a range, not a single figure, and every assumption is listed underneath so it can be recalculated.
⚠ Outside Czechia, Slovakia, Germany, Poland and Hungary we hold no price anchors, so the fields start empty and no result appears until you enter your own water price. That is deliberate — a European average would be a number we cannot evidence. Take the figures from your invoice and the calculator does the rest.
An audit measures the actual flows, pressures and condition — and delivers a figure that holds up in tender documents.