From Brooklyn's brownstones to Manhattan's skyscrapers, Blue Diamond provides New York City's residents and businesses with intelligent energy solutions that drive down costs while promoting efficiency and enhancing comfort. We meet every heating need from fuel delivery to system upgrades, from residential to commercial services, and from oil heat to natural gas. We even provide electrical services and energy audits. In a way, Blue Diamond is like a utility company, but with more options, fewer hassles and lower costs. For service you trust, please call Blue Diamond today or contact us online.