Plumb-Line Contracting Ltd is one of the most experienced and successful central heating companies in the Midlands, based in Northamptonshire. We specialise in residential central heating systems and domestic contracts, new build properties, commercial contracting and central heating for small to medium-sized commercial premises. Servicing the needs of domestic and commercial customers, we deliver a highly professional and personal service, including installation and maintenance for a complete range of fuel types. We are also accredited to survey and carry out Domestic Energy Assessments (DEAs), Non-Domestic Energy Assessments (NDEAs) and Green Deal Advice Reports (GDARs).