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ENERGY MARKETING SERVICE                    

Serving HVAC contractors since 1986

"Guide to Passing the HVAC Licensing Exam"

Completely up-to-date, thru 2019

A comprehensive self study course with no expiration time

Includes Business/Law Exam Prep Course

Based on NASCLA’s “Contractors Guide to Business, Law and Project Management”

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Developed by Energy Marketing Service

This copyrighted HVAC licensing exam prep course teaches and explains the provisions of the Mechanical Code, Fuel Gas Code. Manuals J and N load calculations, Manual D duct design and business principles.  it is designed to assist you in understanding the tough stuff; the stuff many examinees struggle with on the exam.

The only All-in-One HVAC licensing exam course that will teach you

Mechanical Code – Fuel Gas Code  
Manual J – Manual D – Manual N – Energy Code – Business 

    WHAT YOU WILL LEARN WITH OUR GUIDE

✔  Mechanical Code– What to highlight and how to calculate ventilation and combustion air requirements, hood sizes and return air ducts, plus more

  Fuel Gas Code– What to highlight.  Determining confined spaces, gas pipe sizes, vent sizes and clearances, plus more

✔  Manual J, 8th edition- Easy to understand procedures for calculating loads .  Basic principles of heat transfer and thermodynamics.  Operating cost calculations

✔  Manual N– Once we get through Manual J, N will be a cakewalk.

✔  Manual D– “Three easy steps to duct sizing.”

✔  Symbols and Psychrometrics – How to read and use charts and calculate A/C capacity

✔  Business- Learn business equations and accounting principles.  Find out how to figure profit the correct way.

✔  Energy Code– What you need to know to pass.

✔  150 Strategic Practice Questions– With answers and how we got’em.

✔  Much, much more

Our course is based on the International Codes. Most states have adopted the International Codes, although they may bare the name of a state, such as New York State Mechanical Code or North Carolina Mechanical Code.

States colored in pink have adopted the International Mechanical and Fuel Gas Codes

Need an application to get your HVAC license?

“I guarantee you will pass your exam or I will give you an immediate refund”

John White

About your instructor

John White has been teaching plumbing and mechanical for over 40 years. He has a BSBA degree in Business Administration, holds an electrical, plumbing and HVAC licenses. He has taught at both, universities and community colleges, has presented seminars throughout the nation and has even created licensing exams like the one you are about to take. John sold his mechanical contracting business in 2006 to devote his energy to his consulting company, Energy Marketing Services, which develops and conducts plumbing and HVAC exam prep courses and is also an approved provider of continuing education.

Typical exam questions

1.   Where the minimum size combustion air duct is 6” X 12”, a metal lover with unknown free area, must be at least _______ square inches

2.  Calculate the required outdoor ventilation rate for a 1700 sq. ft. office space?

3.  When installing B-vent for a 120,000 BTUH gas furnace (fan assisted), what is the minimum diameter if the vent is 12 feet high with a 2 foot lateral?

4.  Calculate the velocity (FPM) of 800 CFM in an 8″ x 14″ duct.

5.  If R-19 insulation is added to a 1200 square foot ceiling with a U-value of .05, what is the new R-value? New U-value? Heat loss at 50 degree temperature difference?

6.  If you purchase an appliance for $1000 and wish to make 30% profit; what would your selling price be? Hint: the answer is not $1300

Scroll to bottom for answers

Think about it!

After spending hours in a cram course, listening to an instructor rushing to explain the provisions of all the code books, plus teaching you how to perform load calculations and size ducts, vents and piping and then covering business and accounting principles, the average attendee will come out of the class with one question on his mind; “What did he say?”

Most of us have been there before.
The Guide is simply the best way to go.

We make learning easy.

Once you’ve read our sections on Manual J (load calculations) and Manual D (duct design) you’ll be looking for a butt kicking machine for not ordering our course earlier. There is simply no easier method for fully understanding these manuals.

Because many states are now adding business questions to their HVAC exams, we have included a section on business practices and math. It is written in a language, we in the trade understand.  You no longer have to have the skills of a Philadelphia lawyer, mathematician and a CPA to help prepare for the exam. 

AN EXCERPT FROM THE GUIDE TAKEN FROM OUR SECTION ON MANUAL J  (load calculations)

R-Value
This is a number indicating the ability of a substance to resist the flow of heat. The higher the R value, the better it acts as an insulator.
Typical R-values of building components can be found in Manual J or go to: http://www.coloradoenergy.org/procorner/stuff/r-values.htm for a free listing of R-values.
U value
(Learn and understand U value. It is the foundation of a load calculation.)
The U value is the number of BTUs that pass though one square foot of substance in one hour’s time when there is one degree temperature difference. The U value is the reciprocal* of the R value. A U-value can to said to be the rate of conduction
U=1/R
*A reciprocal of a number is 1 divided by the number. The reciprocal of 20 is 1/20 or .05.
Suppose you had a six-inch thick, R- 19 fiberglass insulation batt, and you wanted to know how much heat will pass through it. First, determine the U value.
U= 1/R
U= 1/19
U=.0526
Therefore, .0526 BTUs pass through 1 square foot of the batt each hour when there is one degree temperature difference.
If the batt measured 2’ x 8’ we would have a total area of 16 sq. ft. We could then say that .8414 BTUs (16 sq. ft. x .0526 BTUs). Pass through the entire batt in one hour when there is one degree temperature difference.
Carrying our example just one step further, if the temperature on one side of the batt is 20 degrees and on the other side it is 70 degrees, then we would have a 50-degree temperature difference (70–20). Therefore, 42.08 BTU’s (.8414 BTU’s x 50 degrees) would pass through the batt in one hour.
Simply stated, use the following formula to determine the amount of heat gained or lost through any substance:
BTUH = U x TD X AREA
=.0526 x 50 X 16′
= 42.08
Once you know the U value, the square footage and the temperature difference, you can calculate the BTU heat loss or gain per hour through a substance. However, walls, floors and ceilings are not made up of just insulation. A wall may be made up of brick, sheathing, insulation and sheetrock, each of which has its own R value. The R value of each component must be added together to obtain the total R value. Then we simply take the reciprocal (1/R) and get the total U value of the wall. For a list of R-values, locate a table titled “R Values of Common Building Materials” in Manual J8, or go to:  
http://www.coloradoenergy.org/procorner/stuff/r-values.htm

               AN EXCERPT FROM THE GUIDE TAKEN FROM OUR SECTION ON THE FUEL GAS CODE

Single appliance -Table 504.2(1) Sizing vents

What size B vent is needed for a 160,000 BTUH, naturally ventilated appliance if the total vent height is 18’ and the lateral 2’?

Under the height column you have to choose either 15’ or 20’. Remember this: The taller the vent the more capacity it has, therefore, if the 20’ row is used the vent may be under sized. Always use the shorter height.
In this case use 15’. Now use the 2’ lateral and select a vent size under NAT. A 5” vent will handle only 150,000 BTUH, while a 6” vent will handle 225,000 BTUH, therefore select a 6” vent

Pricing and ordering information

The “Guide to Passing the HVAC Exam” may be purchased as a printable instant PDF download (110 pages), or as a spiral bound hard copy. The hard copy is shipped via USPS and takes 3-5 business days for delivery  

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Answers

1. 96

2. 144.5 cfm

3. 5”

4. 1039 fpm

5. R=39, U=.025, 1500 btuh

6.  $1428.57

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