Is a usage of 1866 m cubed , over a period of one year excessive and how much should it cost ?
the property is a semi-detatched, 3 bed room.
During cold periods the new condensing boiler is on for 6 hours per day, during last Summer 1 hour per day. The boiler also runs a shower used for 5 minutes per day.
The house is well insulated with double glazing
Thanks in advance