Some people have experienced a high usage of units on their CIU when they are away in the summer and no heating or hot water is being used. The CIU should use 1 or 2 units a week in this situations as it activates occasionally to ensure correct working conditions. Any more than this and there may be a problem. At one time it was suggested that the CIU is turned off when away but this is NOT the recommended action. If you are experiencing high usage when away then you should contact Switch2 to arrange a visit as there will be a problem with the CIU that they should be able to fix. Their phone number is 0333 321 2010.

On Monday 26th March 2018 there was a presentation on how the district heating system works at Derwenthorpe. See here for the slides used in this presentation.