Engineering Delaware's Future Since 1970
Call Us: 302.697.7694


Preventive Maintenance Service from Diamond State Engineering, Inc. means piece of mind.  It’s important for your business, employees and customers to keep your heating, ventilation and air conditioning systems running clean and efficiently. Our custom tailored preventive maintenance program can minimize downtime, lower your company’s energy cost and extend the life of your equipment. DSE services all brands and types of equipment. Contact Diamond State Engineering, Inc. today and ask about our wide range of HVAC Services.

Diamond State Engineering

3588 Peachtree Run Rd
Dover DE 19901
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Mission Statement

Diamond State Engineering is a firm committed to being the leading turnkey facility system solution provider by encouraging educational and vocational growth for our employees, promoting good health and safety practices and striving for continued growth and success. Our purpose is to effectively increase the benefits to our employees and their families while exceeding client expectations.