According to our records, this business is located at 128 W Market St. in Georgetown (in Sussex County), Delaware 19947, the location GPS coordinates are: 38.6873722 (latitude), -75.3892747 (longitude). Duffield Associates is categorized under HVAC Engineering (SIC code 8711). Known organization manager is Steven Smailer. Current estimates show that the unit has a sales volume of $790,000 and staff of approximately 5 people. You can contact the company by phone at (302) 854-0100.