Light Commercial HVAC Online Certificate Program

Light Commercial HVAC
Online Certificate Program

The Online Certificate Program gives you a full grounding in proper light commercial design in compliance with the HVAC Quality Installation Specification — on your own computer, at your own pace.


The bank, the church, the garage, the office building, the gym, the restaurant, the strip mall store all need to be conditioned.  This program is designed for the HVAC professional who will be calculating the heat loss and/or heat gain for commercial buildings, as well as, designing the ducted distribution systems for these structures.  This program will give the user all of the tools necessary to intelligently use the ACCA commercial manuals to achieve that end.

Click here to enroll in the online program. The cost for the online program is $495 ($395* for ACCA members).


Note: The required course materials are not included with your enrollment. Click here to save 10% and purchase the required course materials (Manual N, Manual Q, and the QI specification).

Become a Member and Save! 

Explore your options and Join or Upgrade today.

  • Most members save at least 10%!
  • Silver Contractors save at least 20% and can pay with ACCA Bucks!
  • Gold Contractors enjoy unlimited on-demand training for their entire team!

*Bronze ACCA Member Price

Not an ACCA Member?



The class is built in modules (three modules, containing 28 separate lesson units in all) that include video and audio presentations from popular HVACR technical trainer, Jack Rise.

You can move through the class modules at your own pace. While time spent taking the class will vary from student to student, the class contains 18 hours of video, plus 28 assessments and a final exam. We expect the typical learner to complete the class in 22-25 hours plus individual study time.

The class must be successfully completed within 180 days of enrollment.

  • In the Manual N sessions you will learn how to accurately size the proper commercial equipment for your particular application and geographic region of the country.
  • In the Manual Q sessions you will learn four different design methodologies for ducted distribution systems to extract the proper amount of air out of the equipment and deliver it to the areas to be heated and/or cooled in a commercial application.

  • The ACCA Standard 5 course offers instruction on an ANSI Standard (ANSI/ACCA  5 QI - 2010).  Standard 5 is required for Energy Star v3 compliance.   In addition, you will gain a peek at some really helpful software that can dramatically minimize the time required to perform all of the required calculations and system design, without sacrificing quality or accuracy.

At the end of each unit (28 in total) you will be asked to complete an assessment. After completing all of the module assessments (with a passing score), you will be shown a link to complete the final exam. When you pass the exam, you will gain access to a printable certificate proving successful completion of the class.

The certificate expires in five years, to ensure that certificate holders keep up to date on changing industry requirements.

ACCA will maintain your transcript as proof of your credentials.


Completion of this class requires that you have access to the following materials:

  • Manual N
  • Manual Q
  • ACCA Duct Slide Rule
  • ACCA/ANSI Quality Installation Specification
Manual N

Manual N
Commercial Load Calculation

This manual explains load calculation procedures for new materials, assembly methods, and operational requirements in the commercial construction industry.


Manual Q

Manual Q
Commercial Duct Design

Manual Q helps you understand low-pressure and low-velocity systems that are used in small- and mid-size commercial buildings.



Manual N - Light Commercial Load Calculation

  • Limitations and guidelines
  • Heating and cooling loads and design conditions
  • Peak load conditions and system loads
  • Infiltration and ventilation loads
  • How heat moves and space load diversity
  • Fenestration, opaque panels and space pressure 

Manual Q - Low Pressure, Low Velocity Duct Design

  • Duct classifications and fan and duct system performance
  • Measuring system pressure and fitting losses
  • Air side devices and associated pressure losses
  • Supply air outlets and return inlets
  • Four duct sizing methodologies 

ACCA Standard 5 HVAC Quality Installation Specification

  • Establishing templates
  • Use in load calculation and air distribution



Click here to enroll in the online program. The cost for the online program is $495 ($395 for ACCA members).

Get CEUs! Successful completion of the online certificate program will provide you with 25 RSES CEUs for CM (certificate member) or a CMS (certificate members specialist) designations. To receive the  RSES CEUs, you must present the certificate of completion to the organization.


Note: The required course materials are not included with your enrollment. Click here to save 10% and purchase the required course materials(Manual N, Manual Q, and the QI specification). 


Yes, after you purchase the class and log into the system, before you begin the first module you will be offered the opportunity to take a “leap test” which is basically the final exam. If you pass this exam, you will be considered to have passed the class and gain immediate access to your certificate. You can still watch the video classes, if you like, for up to 180 days. (Please note, if you pass the leap test but do not complete all 28 modules, you will receive the ACCA certificate but you will not be eligible for NATE or BPI CEUs.)


Yes, when you purchase the class you will be asked to enter the names and email addresses of however many students you are signing up, and then they will have access to the class.
You will need to re-enroll in the class.
After purchasing and receiving a confirmation email that you have been enrolled in the class, you can start any time (as long as you make sure to start and complete the class within 180 days of purchase). The class is individual and “asynchronous”, meaning it is ready for you whenever you are.
No, not at this time. You will need to watch and participate in the class on a standard desktop or laptop browser. It should work fine with the latest versions of standard web browsers (Internet Explorer, Chrome, Safari, Firefox).
To follow correctly along with the class you will need to specifically use the ACCA duct slide calculation rule. However, you can also use ACCA DuctWheel for iPad, which is an iPad-specific app version of the ACCA duct slide rule. It is available for purchase from Apple’s App Store here. (Note that if you purchase our “bundle” of class + materials, you will receive the physical version of the duct slide rule, not the iPad version, which can only be bought directly from Apple.)
The materials are mailed to you via ground shipping and should usually arrive within 7 business days (USA only).