Are You Looking for HVAC Contractors in Guilford, CT?

J.J. Sullivan provides dependable heating oil, propane, and HVAC services for Southern Connecticut homes. Founded in 1925, we combine century-old expertise with modern solutions like Bioheat fuel and smart monitoring systems. Our customer-first approach includes flexible payment plans, 24/7 emergency support, and locally-based technicians committed to community values.

East River Energy delivers heating oil, propane, and HVAC solutions to residential and commercial clients in Guilford, CT, and surrounding areas. Established in 1984, we specialize in reliable fuel delivery, emergency response, and energy services tailored to local markets. Our mission combines operational excellence with a dedication to customer satisfaction and community well-being.

Madison Oil delivers heating, cooling, and fuel oil services to residential customers in Madison, Clinton, Killingworth, and Guilford, CT. The company specializes in HVAC installation, maintenance, and emergency repairs, emphasizing energy efficiency and personalized service. Backed by licensed technicians and comprehensive service plans, Madison Oil ensures reliable comfort solutions for homeowners.