GMS: Making The Right Things Happen – Correctly and Promptly


Medical Gas Certification

Installation of piping in medical gas systems is governed by requirements included in the National Fire Protection Association (NFPA 99) Standard for Health Care Facilities. Certification requires attending a 32 hour (minimum) course, passing a 70 question written/drawing test as well as horizontal and vertical braze test. This program leads to certification as a Medical Gas Installer.

Backflow Certification

This certification is approved by the Maryland State Board of Plumbing and the Washington Sanitary Commission. The primary purpose is to define, describe and illustrate typical cross-connections and to suggest methods and devices by which they may be eliminated. This rigorous program leads to certification as a Backflow Prevention Assembly Technician and Installer.

Welding Qualification

Welders are tested on the welding processes most commonly used on the majority of construction projects. Our flexible welding program can accommodate special requirements of customers. Testing standards exceed the National Certified Pipe Welders Bureau specifications and are certified by Harford Steam Boiler through GMS’ membership in a local association. This certification program provides pre-tested, certified and immediately available Journeyman Welders.

CFC Freon Recovery / EPA Compliance

This CFC plan is approved as a Technician Certificate Program under Section 608 of the Clean Air Act by the Environmental Protection Agency (EPA). Exams are administered for Core, Types I, II, III and Universal CFC licenses. This program insures compliance with EPA Clean Air Act amendments.

Standard First Aid Certification

Basic first-aid for helping in an emergency situation.

CPR Certification

Cardio-pulmonary resuscitation.


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HVAC Venting - GMS Blog

GMS has created a Blog page - HVAC Venting where we hope to share thoughts and ideas with others in the industry or with those looking for answers to HVAC or mechanical infrastructure issues. Take a look and please feel free to share your thoughts and or comments with us. We'll also try and answer any questions you leave on HVAC Venting

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24 Hour Emergency Services

At GMS, we not only focus on long-term preventative care; we also handle emergencies. More »