Proudly serving Nassau & Suffolk Counties since 1995, Green Homes Long Island specializes in home performance, insulation and energy efficient upgrades. Our complete service team offers heating, air conditioning and plumbing services. Green Homes Long Island has the right approach to lower energy bills and increase comfort in your home. Our team treats your house as a complete system. When that system—heating, cooling, insulation and other components—works together, your home is both efficient and comfortable.