Light Commercial HVAC In-Person Certificate Program

Light Commercial HVAC
In-Person Certificate Program

While the online certificate program is a convenient and affordable way to pursue training in commercial system design, we know that some people prefer the personal interaction of in-person education.

A few times a year, ACCA hosts a four-day class covering Residential & Light Commercial Design for Quality Installation in locations around the country.

Participants in the live class will also receive a five-year ACCA Certificate and ACCA maintains a record of your successful completion. (Unlike the Online Certificate Program, however, in-person participants may not access their transcript or certificate online.)

View Upcoming Classes

Who It's For

Contractors, technicians, design and utility personnel, wholesalers, energy commission officials, licensing and code officials, and others interested in learning the importance, including the economic and environmental benefits, of accurate commercial load calculation procedures for system design.


 Successful completion of the in-person 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.

What's Included

Registration for an ACCA in-person RDQI & CDQI class always includes the following required materials:  Manual J 8th Edition, ACCA Duct Slide Rule, Manual D, ACCA/ANSI Standard 5, Manual N5ae, Manual Q. Plus, you will also receive: Manual S, Manual T, Manual CS and demo Wrightsoft discs.

Current tuition fee for the in-person RDQI & CDQI classes is $1,450 for ACCA Members, and $1,650 for Nonmembers. 

We strongly recommend that you bring a Windows-based laptop computer with you to the class.

Current tuition for the in-person RDQI class:
$1,450 for ACCA Members*
$1,650 for Non-Members

Not an ACCA Member?


* Discounted tuition price available to Silver & Gold Members
man laptop


To register, click on any of the classes below.

Please note that advance registration and payment is required; unfortunately, we are not able to accommodate any "walk-in" registrations.

April 27-30, 2020 - CLASS CANCELED

Tampa, FL


No, all meals, lodging and other expenses are the learner’s responsibility. If you are attending a class at ACCA headquarters in Arlington, ACCA is located within walking distance of the Hilton Garden Inn Shirlington; call 703-820-0440 and mention ACCA to inquire about special room rates (subject to availability). At other locations, please contact and we may be able to suggest nearby lodging.
Certificates are emailed to attendees who successfully participate in an ACCA in-person class at the conclusion of the class. If you lose your certificate and require a replacement, or if someone needs to verify your successful participation in the class, call 703-575-4477.
No, the in-person class registration always includes the required materials.
Days 1 and 2 start at 8am and end at 5pm. Day 3 starts at 8am and usually ends by 4pm. Day 4 starts at 8 am and ususally ends by 3pm, though it may run later depending on class participation.

Day 1: ACCA Manual J 8th Edition – Residential Load Calculations
Receive complete instructions for estimating heat loss and heat gain for residential structures. MJ8 produces equipment sizing loads for single-family-detached homes, small multi-unit structures, condominiums, town houses and manufactured homes. It provides quick supplemental details and advanced topics as well as supporting reference tables and appendices.

Day 2: Manual D 3rd Edition – Residential Duct Systems
Design a residential duct system in less time with the streamlined duct sizing procedure in this revised edition of Manual D. You can apply this procedure to constant volume systems and zoned, variable air volume systems, over the full range of duct construction materials. Manual D also includes the most comprehensive equivalent length data ever published.

Day 3: ACCA/ANSI Quality Installation, And Software
Gain a thorough grounding in the requirements of ACCA/ANSI Standard 5 QI, the blue print for installing an HVAC system that will qualify for Energy Star v 3.0. Also receive instruction and demo usage of software designed to make implementation of ACCA processes simpler in the field.

Day 4: Manual N Commercial Load Calculations & Manual Q Low Pressure, Low Velocity Commercial Duct System Design
Learn to use the New Fifth Edition of Manual N® which details the load calculation procedure for all low-rise commercial buildings. You will learn how to accurately size the proper commercial equipment for your particular application and geographic region of the country. You will also 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.

We restrict class size to ensure a high level of interaction. Typically there are fewer than 20 learners in a class.
Cancellation Policy
All cancellations must be submitted in writing to If you must cancel your attendance, you will be moved to the next available class. Requests for refunds will be handled on an individual basis. Any cancellations received under one month prior to the start of the class will not be considered for a refund.

For more information, contact or call 703-575-4477.