Who We Serve

*Commercial Industry
*Goverment Buildings
*Property Management Firms
*Shopping Centers
*Tenant Fit-outs
*New Contruction & More!

Employment Opportunities

Interstate Service Company has been a family owned and operated commercial serving company since 1972 and is always looking for well-trained professionals to join our successful team. If you are interested in employment opportunities within our organization, please email your resume, or fax to:

Heather D'Jangali or Fax#301-864-1282


Hiring for the
Following Positions:

  • Journeyman HVAC Technician - seeking a responsible, dependable technician with a minimum of 5 years experience in the commercial industry.
  • Helper / Apprentice  - seeking mechanically minded person with a great attitude, willing to work hard and successfully complete an apprenticeship program with the Steamfitters Local Union 602.



We Offer :
  • Competitive Salary
  • Health, Dental & Vision Insurance
  • Paid Holidays
  • Paid Vacation
  • Profit Sharing
  • Company Vehicles (for Service Technicians)