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HVAC Instrumentation and Controls

COURSE NO: M06-019
HVAC Instrumentation and Controls
Course Highlights

This online engineering PDH course covers the fundamentals of automatic controls in the HVAC system. Emphasis is placed on the control principles, terminology, basic components, control devices and direct digital control systems. Numerous illustrations and examples have been included to enhance the understanding of the course material.


The HVAC systems are designed for peak conditions. Because these conditions prevail only for small period in a year, the HVAC equipment must operate most of the time at lean capacity. The function of the control system is to adjust the equipment capacity to match the load. Automatic controls are necessary not only to achieve the design conditions in the conditioned space but are also required for efficient operation of the HVAC system. The main parameters to be controlled in air conditioning system are temperature, pressure, humidity, air quality and thermal energy distribution.


It is important to note that the primary factor influencing the effectiveness of HVAC system is the proper mechanical design itself. The HVAC system must be properly designed to satisfy the process or comfort requirements. Only when this criterion is satisfied can a suitable control system be applied.


The 6 PDH online course is applicable to mechanical, electrical, controls and HVAC engineers, architects, building designers, contractors, estimators, energy auditors and facility managers who are interested in gaining a better understanding of HVAC instrumentation and controls. This course is aimed at the personnel who have some limited background in the air conditioning field or who may be having difficulty relating controls to air-conditioning equipment.

Learning Objectives

This PE continuing education course is intended to provide you with the following specific knowledge and skills:

  • Defining the basic blocks of control system
  • Distinguishing between open loop and closed loop systems
  • Understanding the different types of temperature, humidity, pressure and flow sensors
  • Defining setpoint, control point, offset and throttling range
  • Determining controller action for given the application
  • Distinguishing between direct and reverse reset
  • Distinguishing between the mixing and diverting valves
  • Defining flow coefficient, valve authority, controllability, rangeability and turndown ratio;
  • Describing the sizing of control valves
  • Defining proportional control,  PI control and PID control
  • Describing direct digital control terminology, hardware and control network
  • Citing the energy saving benefits of DDC systems
Course Document

In this professional engineering CEU course, you need to review the document titled "HVAC Instrumentation and Controls".

To view, print and study the course document, please click on the following link(s):
HVAC Instrumentation and Controls (2.1 MB)
Course Quiz
Once you complete your course review, you need to take a multiple-choice quiz consisting of thirty (30) questions to earn 6 PDH credits. The quiz will be based on the entire document.


The minimum passing score is 70%. There is no time limit on the quiz, and you can take it multiple times until you pass at no additional cost.
Certificate of Completion

Upon successful completion of the quiz, print your Certificate of Completion instantly. (Note: if you are paying by check or money order, you will be able to print it after we receive your payment.) For your convenience, we will also email it to you. Please note that you can log in to your account at any time to access and print your Certificate of Completion.

To buy the course and take the quiz, please click on: