In a few minutes you will know whether the heating costs for your building are reasonable or not. If not, you will find out where the causes for this lie and what you can do about it. You will need to have certain information at the ready: if you wish to run the check for an apartment block you will need a recent heating bill; if it is for a one or two-family house you will need to know roughly how much home heating oil or gas you have bought over the last one or two years. Since the heating costs for a building are dependent on many different factors, our checking procedure for your building is divided into several parts: each part checks a possible cause of high costs – but also gives suggestions for reducing costs.