Prompt reliable service that is quick, friendly and affordable

Professional and knowledgeable technicians who are on call 24/7

24 Hour Emergency  –  301-350-5000

When your heating, plumbing or ventilation system stops working correctly, RM Thornton Service is ready to address the problem on a 24/7 basis. Our certified technicians have experience with CRAC units, chillers, boilers, roof top mechanical penthouses, variable volume refrigeration and more. During each service call, your technician will listen to your concerns and then assess your systems. Once the problem has been identified, you’ll get a breakdown of possible solutions and the repair costs for each.


During service emergencies, RM Thornton uses a GPS tracking system to quickly locate and dispatch the closest technician. As part of our commitment to customer satisfaction, an RM Thornton Service Manager will also be alerted and will provide a real-time solution should a problem arise in the field.