Heating, Ventilation, Air Conditioning, Refrigeration Program Overview

  • Request work from Diman's HVAC/R Program

    The Heating, Ventilation, Air Conditioning, and Refrigeration program has been designed to prepare students for immediate employment in the heating, ventilation, air conditioning and refrigeration industries. Upon completion of this program, students possess the necessary knowledge, skills and certifications to diagnose, repair and install today's equipment. Our instructors work to instill 21st Century Skills and social responsibility in all students, and highlight areas of our trade that effect sustainability and environmental impact.  The HVACR shop believes that a diverse workforce will help strengthen the industry of the future, and create a positive learning environment for everyone. 

    The Heating, Ventilation, Air Conditioning, and Refrigeration program is one of the licensed mechanical trades here at Diman, and the only trade where students are immediately able to enter the industry after graduation, without the need for continuing education or night schooling.  Students will earn the Environmental Protection Agency (EPA) 608 Certification which allows work on most air conditioning and refrigeration equipment found in most residential and light commercial properties.  Upon completion of the four-year program at Diman and being eighteen years of age, new technicians should register with the Massachusetts Division of Apprentice Standards (DAS) and for their Refrigeration Apprentice License from the Massachusetts Bureau of Pipefitters, Refrigeration Technicians, and Sprinkler Fitters.  After 2000 hours of on-the-job-training (OJT) and proper registration, technicians will be allowed to test for the Massachusetts Refrigeration Technician license which permits unrestricted large commercial work.  This license is transferable to other states that currently have articulation agreements.


  • Diman Advisory Board Seeks Your Help

    We want you to join the Diman family. While we're proud of our vocational programs and their ability to turn young workers into skilled members of the community, we can't maintain that level of quality without the help of industry professionals. Please consider joining our Vocational Advisory Board, where you will help steer our vocational programs and students toward future success. Learn more and apply here.

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Skills & Careers

  • Students graduating from Diman have a variety of job options open to them. Below is a partial list of jobs Diman grads from this program are qualified for, depending on their level of education.

    Diman Diploma Post-Secondary Education 4 Year College Degree
    • HVAC/R Residential Service Technician
    • HVAC/R Residential Installation Technician
    • Ductwork Installer
    • Supply House Salesperson
    • HVAC/R Commercial Apprentice
    • Service and Installation Dispatch
    • Building Analyst
    • Certified Energy Manager
    • Assistant Project Manager
    • Systems Designer
    • Safety Coordinator
    • Home Inspector
    • Mechanical Engineer
    • Electrical Engineer
    • Facilities Manager
    • Project Manager
    • Construction Management
    • Business Management

    Knowledge & Skill Areas

    Grade 9 

    • Occupational Safety
    • Hand and Power Tools
    • Pipe Joining/Fitting
    • Construction Drawings
    • Electrical Fundamentals
    • HVACR Electrical Controls
    • Mini Split Heat Pump Install

    Grade 10 

    • Refrigerant Handling
    • Refrigeration Theory
    • Medium Temp Systems
    • Low Temp Systems
    • Refrigeration Controls
    • HVACR System Testing
    • System Pump-Down

    Grade 11

    • Forced Air Heating Systems
    • Central Air Conditioning 
    • Installation and Service
    • Preventative Maintenance 
    • Refrigerant Recovery
    • Duct System Design
    • Efficiency Testing

     Grade 12

    • Hydronic Heating Systems
    • Wall Hung Boilers/Combi Systems
    • Centrifugal Pumps
    • Oil Burners
    • Combustion Analysis
    • Unitary Heat Pumps
    • Live In-District Work

In the News

  • Diman announces state OVS

    Congratulations to Corey Cuvellier from Heating, Ventilation, Air Conditioning & Refrigeration as Diman's nominee for the the prestigious Massachusetts Outstanding Vocational Student Award. (2/26/21)

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  • Donations to Diman do double duty

    One donation benefited two shops recently at Diman, when Liberty Utilities donated equipment to both the Plumbing program and the Heating, Ventilation, Air Conditioning, and Refrigeration program. The equipment was donated in March of 2018 and included two unused furnaces, a used furnace, an air condenser, and a pair of industrial-sized heaters. (3/27/18)

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  • Single, foster mom winner of Fall River home built by Diman students

    A single, foster mom of three children has her shot at moving out of her apartment and into her own home. Donna Handler’s number was chosen by lottery Friday afternoon to purchase a home on Duluth Street built by the students of Diman Regional Vocational Technical High School. (5/30/17)

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