According to our records, this business is located at 140 Whitekirk Dr. in Wilmington (in New Castle County), Delaware 19808, the location GPS coordinates are: 39.7552257 (latitude), -75.6624428 (longitude). Gillan & Hartmann Consulti is categorized under HVAC Engineering (SIC code 8711). Current estimates show that the unit has a sales volume of $100,000 and staff of approximately 2 people. You can contact the company by phone at (302) 654-5959.