Downey Plumbing & Heating provides reliable residential and commercial HVAC and plumbing services in Hanover, Massachusetts, and the surrounding South Shore communities. The company specializes in installing high-efficiency heating and cooling systems that help homeowners reduce energy consumption and lower utility bills. From modern air-source heat pumps to traditional boiler and furnace replacements, every installation is completed with attention to detail and long-term durability. The team also offers comprehensive plumbing services, including water heater upgrades, leak detection, and fixture installations. By prioritizing energy-efficient equipment and proper system sizing, they support sustainable home performance and healthier indoor environments. Their professional technicians work closely with clients to recommend systems that fit the specific thermal demands of each building. Whether tackling a complex system upgrade or routine seasonal maintenance, the focus remains on comfort, reliability, and modern efficiency standards.