HVAC Basics (Short Course)

HVAC Basics 8.0 CEUs

The many components and processes of heating, ventilation, and air conditioning (HVAC) are challenging to understand. The purpose of this course is to help you understand how HVAC systems work, and what you can do to improve their efficiency. This is our most advanced course on HVAC.
1.1 HVAC Retrofit Efficiency Choice—1.5 CEUs

HVAC systems are expensive to replace. If we replace an existing system, we should make it the most efficient systems that the client or organization can afford. This lesson covers how to make the best choices to either service the existing system or select and install the most efficient HVAC system the customer can afford. You’ll learn the following.

Know the four common problems with AC and HP systems.
Understand the two most basic efficiency choices for existing HVAC systems. Service or replacement.
The importance of HVAC equipment sizing and selection.

1.2 HVAC Retro-Commissioning—1.0 CEUs

HVAC systems are expensive to replace. When we solve HVAC problems without replacing the system, we benefit our client. This lesson covers how to improve existing HVAC systems through retro-commissioning. Retro-commissioning evaluates the functioning of HVAC systems through measurement and adjustment. You’ll learn the following.

How to diagnose HVAC-system problems.
How to find effective solutions to HVAC problems.
How to conduct post-improvement tests to measure your success.
The importance of preventative maintenance.

1.3 Evaluating HVAC Airflow—1.5 CEUs

HVAC airflow problems are difficult to diagnose and fix. Poor HVAC airflow can dramatically reduce building energy performance, even if the building is otherwise energy efficient. Never assume that HVAC airflow is sufficient for good HVAC efficiency. This lesson covers the causes and solutions of common HVAC airflow problems. You’ll learn the following.

How to evaluate an HVAC system’s airflow.
How to diagnose inadequate airflow.
How to recommend solutions that improve HVAC airflow.

1.4 Improving HVAC Airflow—1.5 CEUs

HVAC systems are only effective if they distribute the right amount of conditioning to building spaces. Forced-air HVAC systems are notorious for air-distribution problems. This lesson covers conditions that reduce the effectiveness of forced-air distribution systems. You’ll learn how static pressures, equipment maintenance, and duct design affect airflow into rooms. You’ll also learn methods to improve forced-air distribution and solve airflow problems.
1.5 HVAC Refrigeration—2.5 CEUs

Central air conditioners and heat pumps rely on the refrigeration cycle to provide heating and cooling. This lesson explains the refrigeration cycle in simple language with clear diagrams. You’ll learn the following.

How HVAC refrigeration systems work.
Common problems that reduce refrigeration efficiency.
How to recognize refrigeration problems.
How to specify solutions that restore refrigeration effectiveness and increase efficiency.