It is often assumed that the majority of a bill relates to space heating, rather than water heating. However, a significant proportion of heat consumption relates to the provision of hot water.
It should also be noted that the Heat Interface Unit (HIU) within your property will often allow a small amount of heat to pass through. This is standard and known as a “keep warm function” or ‘bypass consumption’. This function will apply even if the heat supply is not being actively used within your apartment. It is generally a small amount but will explain why you might see heat consumption on your bills even though the property is empty.
You can find more information on how to lower your consumption and costs by reading our How can I save energy? article.