Stebbins-Duffy, Inc. is a leading manufacturer's representative in Eastern Massachusetts, Southern New Hampshire and Rhode Island, offering a wide variety of HVAC solutions. Since 1967, our specialty is providing engineered heating, ventilating and air conditioning products for commercial, institutional, industrial, multi-tenant and high-end residential users. Our knowledgeable sales force and mechanical engineering team will help you find the most energy efficient and cost effective solution for your application. We provide technical expertise and product knowledge to help with ASHRAE Standards, code compliance, LEED, Green Building and Sustainable Design considerations.