Original price was: $995.00.Current price is: $795.00.


Texas ACR Environmental Air Conditioning Contractor



Texas ACR Environmental Air Conditioning Contractor preparation is our specialty since 1972. School enrollment is complete with Home Study Computer Program, Tutoring, and Live Seminars with real questions, answers, code references, and calculations to prepare you for the actual PSI state licensing exam.

Custom Home Study Computer Program running on your personal PC

Our sample exams simulate your actual PSI state exam!

Below are a few questions from your upcoming PSI state exam:

  1. Given that an 80,000 Btu/h gas furnace will have the combustion air supplied from a mechanical air supply system outdoor source, the combustion air in shall be at least __ Cubic Feet per Minute of ventilation?
    • Correct Answer: IFGC – CFM = (0.35 cu-ft/min/1,000 BTU/h) x (80,000 Btu/h) = 0.35 cu-ft/min x 80 = 28 CFM. A short cut would be 80 x 0.35 = 28 CFM
  2. If two operators are performing “normal” technical maintenance of equipment inside a small 200 sq-ft room, what would be the required CFM?
    • Step_1: IMC – 0.5 cfm per sq-ft x 200 sq-ft = 100 CFM, or
    • Step_2: 20 cfm per person x 2 operators = 40 CFM.
    • Step_3: Design the minimum ventilation at the larger 100 CFM
  3. If the compressor displacement is 10 cu-in, but the unit’s actual pump volume is only 6 cu-in, what is the pumps calculated volumetric efficiency?
    • Correct Answer: MR&AC – Volumetric Efficiency = (Actual Volume / Theoretical Volume) x 100 = (6 cu-in / 10 cu-in) x 100 = 60%

The Contractors School offers the only Complete 3-in-1 System consisting of:

1) New Home Study Computer Program with 15 excellent sample exams to simulate your actual PSI state exam!
2) Weekend Seminar or Webinar!
3) Engineering tutoring help!

The following reference materials are allowed in the examination center:

Business and Law Reference List:

  • Texas Air Conditioning and Refrigeration Contractors Law 
  • Texas Air Conditioning and Refrigeration Administrative Rules 
  • OSHA CFR 29 Parts; 1904-Record keeping, 1910-General Industry, 1926-Construction. 
  • IRS Publication 15 (Circular E)

Technical Reference List:

  • Modern Refrigeration and Air Conditioning 21st Edition
  • ADI Duct Size Calculator

Code Reference List:

  • International Mechanical Code – 2018 Edition
  • International Fuel Gas Code – 2018 Edition
  • Uniform Mechanical Code – 2018 Edition

The following three references are used for Environmental Air (not Commercial Refrigeration) examinations only:

  • Manual D – Residential Duct Systems, 2014 Edition
  • Manual J – Residential Load Calculation, 2011 Edition
  • Manual S – Residential Equipment Selection, 2014 Edition

Important Note: Reference materials may be highlighted, underlined and/or indexed prior to the examination session, and math notes are all permitted prior to the exam session.

License Requirements & Definitions Summary:

Class A: 120 question exam, 230 minutes time limit, minimum test score 70%
Class B: 100 question exam, 170 minutes hour time limit, minimum test score 70%
State Application Fee = $115
Class A: PSI Test Fee = $74
Class B: PSI Test Fee =$60
Experience requirement: Your employment history must indicate at least 48 months (4 years) of practical experience with the tools of the trade in the preceding (6) years.

License numbers will have the following form:

Title/Class/Number/Endorsement code – TACL/A/000000/C for a “Class A Combined Endorsement Contractor”. Endorsement codes are as follows:
(C) Combined Endorsement
(E) Environmental Air Conditioning
(R) Commercial Refrigeration and Process Cooling or Heating

Frequently Asked Questions:

(1) What is the difference between “Environmental Air Conditioning” and “Commercial Refrigeration/Process Heating and Cooling”?

“Environmental Air Conditioning” means treating air to control temperature, humidity, cleanliness, ventilation, and circulation to meet human comfort requirements. Includes central air conditioning and heating.

“Commercial Refrigeration/Process Heating and Cooling” is limited to coolers, freezers, ice machines, and equipment that provides temperature and humidity controls.

(2) What is the difference between a Class A and a Class B license?

Class A allows you to work on any size unit.

Class B allows you to work on cooling systems of 25 tons and under, and heating systems of 1.5 million BTUs/hour and under.

Applications must be submitted to Texas Department of Licensing and Regulation TLDR online or at:
. (512) 463-6599

Examinations are administered by the testing agency PSI Services LLC:
. (833) 333-4741

While most of our students pass their exams in 4-6 weeks, our system is a three month enrollment and allows for unlimited Home Study (computer software subscription), Seminars, and Tutoring for a three (3) month period. Questions, answers, and article references that you need to pass the new PSI state examination are contained in this new program. Choose this program if you are serious about passing your state exam with PSI. Go into the test prepared with the best Home Study Computer Program in Texas!

Click ADD TO CART at the top of this page to begin your studies today!