Propane/Oil Service Technician

By lrothstein | February 16, 2026

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The latest news, course offerings and happenings at Granite State Trade School

Granite State Trade School attended the PHCC SkillsUSA National Championships

Granite State Trade School was proud to attend the recent PHCC Educational Foundation SkillsUSA National Championships, one of the premier events showcasing the nation’s top plumbing and HVAC students. Held as part of the annual SkillsUSA Championships, the competition brings together state champions from across the country to demonstrate their technical knowledge, problem-solving abilities, and… Read More »

Bundle and Save on Complete Gas Training

For students looking to build a career in the growing gas industry, Granite State Trade School is making it easier — and more affordable — to complete the training needed to move into the field with confidence. The school’s new Gas Bundle program combines three of its most important gas training courses into one streamlined… Read More »

PHCC Academy OSHA Construction Safety Courses

Granite State Trade School is proud to announce its partnership with the PHCC Academy—bringing nationally recognized training programs to New Hampshire. As an official Academy Partner, GSTS now offers industry-leading safety certification courses designed to support today’s construction professionals. Whether you’re just getting started or advancing your career, our new OSHA 10 and OSHA 30… Read More »

What People are Saying about Granite State Trade School

If you are a MA plumber or gasfitter and you are interested in getting your NH license, I highly suggest this school. I came here and was very impressed from my first phone call to my last test.

- Thomas Denoi

Jim is hands down the best instructor. The facility is amazing. The quality of education you will not find anywhere else. This is the trade school.

- T. Harty

Great atmosphere upon arrival. All instructors are very knowledgeable in all categories offered and more! Overall amazing experience and will continue to go to GSTS!

- Jonah Lopez

I've been attending GSTS for a decade or so, and cannot imagine a better trade specific instructor. Jim is extremely knowledgable, shares the info with enthusiasm and relates the material through real world stories. The facility is full of hands on equipment, and his manner as an instructor (and gentleman) is an A+. 5 star

- Justin Auger

Take Your Career to the Next Level at Granite State Trade School

Certification is a validation of experience, knowledge, skills, abilities, behaviors, and competencies for a particular job or profession. Personal certification is a demonstration of an individual’s knowledge, skills, and abilities in a specific trade or field. Whatever your career objectives are, call Granite State Trade school and start taking your career to the next level.

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Granite State Trade School

Gas

Continuing Education

Plumbing

Heating

Hearth Installers Certification

Oil

Specialty

Gas

Plumbing