One Call HVAC is the trusted source of all heating, cooling, and plumbing services throughout South Shore, Massachusetts. While based in Plympton, MA, our professionals are available to travel throughout South East Mass to bring reliable service right to your home or business. Our licensed team has been providing their expertise to neighboring towns for more than a decade. Below you will find a list of cities and towns included in our service area. If you are interested in our HVAC services but do not see your town below, contact us to discuss a possible solution.