Boiler Usage Cost Calculator
The Following calculator can be used to calculate your hourly and annual usage and costs for Hot Water and Central heating. This calculator is aimed at combination boilers, however setting HW to zero will allow it it work for system or regular boilers.
The gas and electrical consumption of the appliance can be read from the technical data. Please note however this calculator does not take into account when the boiler is modulating at which point consumption starts going down. Use this calculator as an approximation by entering the data as if the appliance is running at maximum power in their respective modes ie hot water or central heating. Round up modulation by adding extra hours to account for this.