Welcome to Interstate Service Company, Inc.
For 36 years, we've been one of the Washington area's leading commercial and industrial HVAC-R companies. Our team can expertly assess and manage all your heating, cooling and refrigeration needs.
HVAC, HVAC-R, commercial, industrial, HVAC contractors, heating, cooling, air conditioning, refrigeration, heaters, furnace, Maryland, Virginia, Washington, D.C., Washington metro area,
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