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Our Story
A family owned and operated business, Interstate Service Company was established by James Ashen in 1972. Although he is still involved with the firm, Mr. Ashen is proud to have passes his legacy on to the next generation. Today his daughter and son Heather D'Jangali and Kenneth Ashen operate and manage Interstate Service Company (ISC). They are looking forward to growing the company in years to come while maintaining their father's dedication, passion, excellent customer service and unsurpassed reputation. Interstate Service Company is a full service heating, ventilation, air conditioning and refrigeration company. They provide installation, service and repair of all types and sizes of commercial and industrial systems. ISC specializes in construction, maintenance, and service contracts.
Given their workforce of approximately fifty (50) fulltime employees, ISC is well positioned to handle all of your HVACR requirements. Employees include highly qualified steamfitters, HVACR technicians, Project Managers, Certified Welders, Apprentices, and a highly motivated team of Administrative Personnel.
As reflected by their high percentage of return business, ISC has been providing the highest quality of service to clients in the Maryland, DC and Virginia area for 47 years. This continued success attests to the quality, capability, and consistency of their work, instilling business owners, management companies and general contractors with secure knowledge that their projects are in the hands of one of the most respected contractors in the area.
Interstate Service Company, Inc.'s goal is to provide you with quality equipment, highly trained service technicians, superior customer service and competitive pricing. ISC sincerely appreciates your interest and looks forward to building a successful business relationship with you.
Commercial & Industrial Services
Operations and Maintenance
They provide full-service maintenance with dedicated staff to ensure ongoing system maintenance and quick repair. Their emergency service team is available 24/7 for contract customers.
Installation
Providing full and partial HVAC system replacement, tenant fit outs, as well as brand new ground-up installations.
Systems Design and Project Management
Specializing in retrofitting older buildings with new heating and cooling systems. New construction and tenant fit outs.
Commercial Refrigeration
Installation and service all types of commercial refrigeration units, including walk-in coolers and freezers, reach-in boxes, and ice machines.
Commercial Experience
Regions & Counties Serviced
- Washington D.C.