# Calculating Envelope Energy Loss Course

Welcome to InterNACHI's free, online Calculating Envelope Energy Loss Course.

Heat flowing in and out of a building consumes a lot of energy. Heat loss (or energy loss) is the annual heating consumption in BTUs. The main reason to calculate energy loss is to predict the savings that can be achieved from home energy upgrades, measures taken by contractors (or homeowners) to save energy. Another reason to calculate energy loss is to compare the actual heating costs with predicted heating costs.

Goal:

The goal of this course is to teach the student how to calculate energy loss from the building envelope a house.

Objective:

Upon successful completion of the course, students will be able to:
• describe basic energy movement;
• calculate hourly and annual energy loss; and
• communicate the principle of diminishing returns.

Course includes:

• 4,839 words;
• student book;
• inspection and writing assignment;
• research and writing assignment;
• 5 quiz questions in 1 quiz;
• 25-question final exam (drawn from a larger pool);

 Calculating Envelope Energy Loss Course Course # 4010 nachi.org/calculating-envelope-energy-loss Activity Assignments Estimated hours for the average student Academic Engagement Reading online course instructional material at 140 words per minute 0.6 Taking quizzes 0.1 Taking the exam 0.7 Conducting a directed and independent inspection study performed according to the Standards of Practice, including the development of an inspection report 4.0 Submitting an inspection and writing assignment 0.5 Submitting a research and writing assignment 0.5 Total 6.4 Preparation Studying and reviewing instructional material in preparation for taking quizzes and exam 0.6 Reading the downloaded student course book including taking the quizzes with the book 0.6 Reading, research, and studying related to completing the research and writing assignment 4.0 Studying and preparing for inspection processes according to a Standards of Practice, including capturing and storing digital images with a camera or device, making observations, evaluating conditions, deducing, formulating opinions, communicating observations in written form, attaining competency in performing inspections and using an inspection checklist or software and other inspection tools in producing a report. 10.0 Total 15.2 Sub Total 21.6 Overall Total 22.0 hours / 0.4 SCH

In keeping with InterNACHI's commitment to Continuing Education, this course is open and free to all members, and can be taken again and again, without limit.

Reminder to members:  InterNACHI's Code of Ethics 1.10 requires that you comply with all government rules and licensing requirements of the jurisdiction where you conduct business.  InterNACHI's courses and Standards generally exceed the Standards of Practice that you are required to abide by locally.

This course has been approved by:

This course covers the following topics
• Key Terminology
• Quantifying Envelope Energy Loss
• Some Typical R-Values
• When is an R Not an R?
• Assembly R-Values
• Quantifying Envelope Energy Loss
• Wall Section Surface Loss
• Wall Section Surface Loss Calculation
• Uninsulated Ranch
• Calculating Area
• Calculating Volume
• Heat Loss Through Surface Area - 1
• Heat Loss Through Air Infiltration - 1
• Minimally Insulated House
• Heat Loss Through Surface Area - 2
• Heat Loss Through Air Infiltration - 2
• Program Standard House
• Heat Loss Through Surface Area - 3
• Heat Loss Through Air Infiltration - 3
• Law of Diminishing Returns

Upon completion of this course and passing of the 20-question final exam (drawn from a larger pool), the student can download and print their own Certificate of Completion which is auto-generated in their own name.

The student's (InterNACHI member's) information is recorded on InterNACHI's servers for membership compliance verification, and automatically logs completion into InterNACHI's online Continuing Education log.

Non-members may view only the first page of the course.

InterNACHI... #1 in inspection education.

Some features which make InterNACHI's courses superior to existing continuing education options:
• The course is free for all InterNACHI members.
• The course is written in pure XHTML code for quick loading.  The course loads fine on old computers and loads fast, even with dial-up.
• The course is designed using a hierarchal menu coupled with a sequential page navigation.  This provides the student with the option to easily repeat areas of weakness.
• The course permits the student to start, stop and restart any part of the course as often as desired.
• There are a variety of images within the course, including diagrams, illustrations and photos.
• The illustrations can be enlarged for clearer viewing by clicking on them.
• The text is integrated into InterNACHI's Inspector Glossary.  Rolling over blue-colored terms provides their definition.
• The final exam uses multiple-choice questions that reference the images.
• The course's quizzes and final exam have numerous advantages over traditional exam systems:
1. The course, quizzes and final exam incorporate built-in intelligence which identifies and strengthens each student's unique subject weaknesses.
2. Not only is each question weighted with regard to score, but each answer is weighted, as well as the correctness of each answer being weighted.
1. Answers to easy questions are weighted such that the student is penalized, in terms of score, for answering incorrectly, but rewarded modestly for answering correctly.
2. Answers to difficult questions are weighted such that the student is rewarded, in terms of score, for answering correctly, but not penalized for answering incorrectly.
3. Answers to questions regarding basic safety, or questions every inspector should know the answer to, are weighted such that the student is severely penalized, in terms of score, for answering incorrectly.
• Upon passing the final exam, the student can print out a Certificate of Completion which is auto-generated in their own name.
The student's (InterNACHI member's) information is recorded on InterNACHI's servers for membership compliance verification, and automatically logs completion into InterNACHI's online Continuing Education log.

Why online inspector education is better than classroom inspector education.