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SER 300 at-a-glance

After taking this class, HVAC technicians will be capable of using typical field measurement tools to commission and troubleshoot air systems.

  • Determine required outside ventilation air supplied to the zone(s) through air economizers
  • Determine how zone-by-zone airflow is tested, measured, and verified to match the zone design calculations
  • Use of control systems to properly set up various VAV terminals
  • Perform basic commissioning and troubleshooting
  • Lab exercises use working CV and VAV units and typical field instrumentation

duration cost format register
5 days $1,200 classroom



Class Overview

Comfort and performance issues are often the result of improper airflow. Airflow testing is the primary performance indicator of any HVAC system and must be completed before all others service procedures can begin. Without verification of airflow throughout the entire system, it’s impossible to effectively test the heating and refrigeration performance or assure zone-by-zone airflow. Proper assessment of required outside ventilation air supplied to the zone(s) through air economizers in systems such as VAV (variable air volume), CV (constant volume) and SZVAV (single zone VAV systems) is essential to code compliance and zone comfort. Just because the airflow of the supply air blower may be adequate, you cannot accept this airflow is being effectively dispersed throughout the building and the various comfort zones. The primary purpose of air delivery systems is to “deliver comfort and proper ventilation air” and neither of these air properties can be assured unless zone-by-zone airflow is tested, measured, and verified to match the zone design calculations. If the proper airflow doesn’t match or meet the needs of the occupied comfort zone, there’s no way the ventilation and load requirements can maintain the occupants’ comfort. “Air System Measurement, Testing and Verification” is as important as any step a technician performs in commissioning or troubleshooting a system.

This course is an in-depth analysis of the principles that impact airflow including air properties; fan, air terminal, and diffuser performance; airflow measurement and testing instrumentation. Also covered is how to determine proper ventilation in compliance with code requirements and determine if it is being delivered to the zone. Use of control systems to properly set up various VAV terminals including single duct and fanpowered pressure dependent and pressure independent systems is covered. At the end of this course a technician will be capable of using typical field measurement tools to commission and troubleshoot air systems. Over 50% of this class involves exercises using working units and typical field instrumentation.

Who should attend this class

This course is for HVAC technicians with a minimum of two year of field experience or a graduate of an HVAC training program with one year experience. Students are expected to have basic math skills, a firm understanding of basic mechanical and electrical troubleshooting and a basic understanding of HVAC tools (gages and digital thermometers) and troubleshooting equipment.

HVAC Training Objectives

Learning Objectives

At the conclusion of this course each student should be able to:

  • Use of Psychrometrics and the properties of air in field testing of air systems. 
  • Describe various kinds of HVAC air systems, including the component's and operational characteristics for commercial HVAC (all air) systems, including the air flow and pressures in the various ducted systems.
  • Use of AHRAE 62.1 -2013 in commercial HVAC systems to determine proper ventilation for the ventilation zone, and techniques on setup and verification of minimum ventilation of an operating air system.
  • State what you need to know about ducted air systems to properly apply the techniques of field measurement and adjustment of packaged and applied air systems.
  • Perform field testing of system air flow capacity for constant volume and VAV systems.
  • Apply the procedures for field testing and adjustment of fan performance, measurement and verification of air system components. 
  • Describe “why is air distribution is important in system performance”, the skills and techniques to properly verify the performance of the air distribution components for a system including: proper techniques used for air duct design, air flow and operation of parallel, series, and single duct air terminals, and operating characteristics of different  air diffusers under different operating conditions.
  • Describe basic acoustics terminology including the difference between sound power and sound pressure and basic sound measurement 

Learning Methods Used

This course uses a combination of classroom lecture using subject units, tours in the training facility lab, demonstrations, practical labs on operating equipment and in-class training to present the material. Student’s achievement of the learning objectives is determined by successful completion of the in-class unit training and labs. In-class unit training includes instructor guided exercises using the procedures taught in the instructor’s class lectures.

Class Details

Topics Covered

All times are approximate and shown as (classroom hours/lab or workshop hours).

  • Basic of airflow (1/2)
  • Familiarization of Air System Basics including basic Heat Transfer and Properties of Air (1/2)
  • Air System Types and Components, familiarization of the different types and components of air systems (1/1)
  • Calculating duct sizes (1/0)
  • Air quantity and velocity (1/ 2)
  • Pressures in duct and dynamic losses (1/0)
  • Familiarization of sizing ductwork (1/0)
  • Calculation Pressure losses in Ductwork (1/0)
  • Measuring Air flow in ducted systems. (1/2)
  • Airflow in a duct and fitting (1/0)
  • Field adjusting and testing of Fan (blower) performance (1/2)
  • Familiarization and practical application of FAN LAWs (1/1)
  • Practical familiarization to Psychrometrics (1/1)
  • Detailed discussion on the design approach for ventilation using ASHRAE 62.1 Standard (1/1)  
  • Acoustic Fundamentals including the difference between sound power and sound pressure (1/0)
  • Familiarization of fans including types, characteristics, measurement and verification of performance. (1/1) 
  • Various method of performing a duct travers and familiarization with various air measurement instruments (1/2)

Class Requirements

Completion requirements

To receive a certificate for this course student must be present for the entire course, complete all class exercises and labs and receive a grade of 70% (C+) on graded labs.

Prerequisite requirements

To work with airflow in ducts you need to know how to work simple equations and how to change equations to a different form. Anyone attending the course must have a working knowledge of these basic math skills.  This course is designed for HVAC personal with 3- 5 years minimum experience in either or combination of service, equipment operation, maintenance and installation of commercial HVAC equipment. 

Suggested Background

Technicians already engaged in the service of HVAC field or persons with field experience. HVAC Service technicians that want to learn the critical nature of airflow setup and testing, contractor personal, building HVAC maintenance personnel who want to gain hands on experience with measurement, testing verification of airflow including minimum ventilation, for commercial HVAC air systems. The air system components tested and measured include air diffusers, VAV air terminals, and unitary and applied central air sources. Any person interested in learning about HVAC air flow measurement, testing and verification meeting the minimum student prerequisites.

Materials to bring

No special equipment is required we provide the appropriate safety equipment required by Carrier. Arc flash equipment is not required for the voltages used in the lab, if you are required by your company to use other PPE you may bring that to class. 

What you will receive

Students in this course receive a course book, safety glasses, and laminated psychrometric chart.

Appropriate dress for this class

This class has a number of exercises that take place in the lab on operating units; participants should wear long pants, closed toed shoes and appropriate shirt, long or short sleeve. If your employer requires special dress which is more stringent than these requirements, this dress should be worn.

Class hours

Class starts at 8 AM Monday and runs from 8 AM till 5 PM each day except Friday which runs form 8 AM until 12:00 PM. Travel arrangements should be made accordingly. 

Location & Lodging

Carrier University is located at 6540 Old Collamer Road South, East Syracuse, NY 13057. Lodging options can be found here.