The Technical Training Institute just celebrated 17 years offering  the most comprehensive professional development and contractor license exam prep courses in the industry


 Did you know over 90% of TTI students pass their 

 licensing exams the first time?




Get ready for your license exam at home or at work, anytime!




Ready to get licensed?



Sign-up for a prep class

or study at home. . .


We take the anxiety out of the testing process. Our course covers hundreds of sample test questions in two fast-paced days for NC electrical, plumbing and heating applicants. Engaging,

multi-media presentations teach

real-world skills our students use the very next day in the field. 


Over 90% of TTI students learn to use the code books and apply simple techniques to pass their license

exams the first time




 Use the links below more information about our license prep programs


 NC Heating H-1, H-2, H-3


 NC Plumbing P-I & P-II


 Specialty Electrical SP-PH


 NC  Limited Electrical


 NC  Intermediate Electrical


 NC Unlimited Electrical


 Electrical 8 - Hour CE


Design Services: TTI now offers load estimating and hvac system design services.

Our mechanical design staff starts with a detailed residential survey/analysis

and provides complete room by room loads based on your specifications. This program also offers technical assistance, design reviews and field consultation services.


Technical excellence, responsive scheduling, and fast, efficient results are just a few of the benefits of TTI's design services.




Research and Development:  In 2012, a collaborative effort between contractors

and leading chemists resulted in a polymeric sealant that cures "Dirty-Sock Syndrome", the coil-odor problem that has plagued the hvac industry for decades. 


VindEX Ultra is the only field-applied cure for "dirty-sock" syndrome, that locker-room smell that affects aluminum coils.  With a 100% success rate; professional application takes only minutes instead of weeks,  greatly reducing the downtime required to seal the coil and eliminate all odors.  Did we mention it's cost efficient? Less than $70 to seal and protect a residential system.


Visit or visit your local hvac supply house.





        Right-Suite Residential Load Estimating and   

        System Design - Level I

Thursday & Friday, September 7 & 8, 2017

Thursday & Friday, November 2 & 3, 2017


8:oo am to 5:oo pm daily

$349.00 - includes NC, CS & GA templates


wrightsoft heating ventilation air conditioning software the only fully integrated residential and commercial software solution that is designed to save you time.  It eliminates mouse clicks and automatically updates all areas of the program instantly. With advanced easy-to-use technology, RSU is expandable to meet your exact business needs.  

Wrightsoft is powerful - but that doesn't mean it has to be confusing, we've simplified the process so your job is easier.  Our design template CD is included - you save time and start running your own loads the first day!

Whether you're doing residential or commercial system design, Wrightsoft right-suite Universal can help you to properly calculate your loads, accurately design and size your system, produce parts take-off lists and proposals according to your parts and pricing, and prepare professional documentation and reports - all in one program, at the click of a button.


Level I Day one will give you all the necessary tools to set up project templates, run your own loads and properly size equipment and duct systems for new construction. (Students receive CD with NC templates used during class.)

 How heat moves and what to measure

 Design conditions and fenestration

 Surfaces and duct system loads

 Airflow basics

 System design procedure

 Residential Equipment selection (ACCA Manual S)


Day two will build on basic skills learned during day one; run loads on residential and light commercial structures and properly size replacement equipment and duct systems:


 HVAC Quality Installation Specifications

Replacement vs. new construction

Hands-On design - first and second floors

Additional floors

Variable air vs. equipment zones

Screens affected by zoning

Load evaluation

Cost comparisons








Right-Suite Load Estimating and System Design


Level III 

Strip Store RTU application / Multi-level Core Zone Application  / Assembly Building Loads with OSA and non-peak occupancy


Friday, September 15, 2017/ 8:oo am to 5:oo pm  . . . $169 / student

Friday, November 10, 2017/ 8:oo am to 5:oo pm  . . . $169 / student

8:oo am to 5:oo pm  / $169.00 / student


Students utilize laptop computers to run the Wrightsoft Manual-N program for commercial load estimating:

Skills developed:

 Commercial construction assemblies

 Internal gain from people

 Internal gain from appliances

 Internal gain from lighting

 Motor and process loads

 Duct loads

 Code requirements and outdoor air loads

 Equipment selection