Texas edition

Be prepared to pass your Texas HVAC licensing exam in less than two weeks*.


*Of course, you could lock yourself up in a cave, with no distractions, and learn everything over a weekend.*

Texas HVAC licensing exam breakdown of recent exam questions

                                       Topic                             Number of questions

      Air distribution                                                 15

      Basic refrigeration components                         5

      Combustion air                                                  5

     Controls                                                             5

       Equipment requirements                                 10

       HVACR systems and design                            10

      Piping                                                                 5

      Refrigeration principles                                      5

     Safety                                                                 5

      Service                                                               10

        Testing                                                                10

      Texas Laws and Rules                                        5

       Ventilation                                                           5

         Venting                                                               5

                                      Total questions                           100   


See for yourself, how our course will help you. Get out your Manual D and/or duct calculator and click the button below

"Guide to Passing the Texas HVAC Licensing Exam"

Completely up-to-date, thru 2022

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”

“So easy, your dog could pass!”

Click on picture to see presentation

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 HVAC licensing exam course that will teach you the following


✔  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. We condense 629 pages to only 11 pages

✔  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.

✔ Texas HVAC Rules and Laws – Highlighted ——->

✔  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  purple have adopted the International Mechanical and Fuel Gas Codes

“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


1. 96

2. 144.5 cfm

3. 5”

4. 1039 fpm

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

6.  $1428.57

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. For example, the Guide condenses Manual J from 627 pages down to 11 pages; Now, that’s making it easy

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. 


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

Begin studying today. No need to wait for the mail


“Guide to Passing the HVAC Exam”

ONLY  $147

Once your purchase is verified, you will receive download instructions  If you wish to print the course, it is about 130 pages. Your debit or credit card purchase will be safely processed through *Clickbank

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