If you heat your home with oil, or are buying or selling a property that does, you should be aware of the new Massachusetts heating oil regulations that went into effect as of September 30, 2011. While the upgrade is a relatively small expenditure (estimated to be $150 – $350 including labor, parts, and local permit fees), the enactment is an important environmental protective measure. The law requires the installation of either a safety valve or a protective sleeve on the oil supply line on any system that does not currently contain one. Newer systems installed after 1990 are likely to already be in compliance. The intent is to avoid hazardous leaks and the resulting expensive and extensive cleanup. For full details on the Massachusetts homeowner oil heating system upgrade, see the Mass Department of Environmental Protection website.