Wisconsin HVAC Exam Books: Complete 9-Reference List

If you are preparing for the Wisconsin HVAC Qualifier Exam, one of your first questions is probably: What books do I need?

The short answer is that the Wisconsin Department of Safety and Professional Services, commonly called DSPS, permits nine specific reference items for the HVAC Qualifier Exam.

These Wisconsin HVAC exam books include state administrative codes, national model codes, NFPA 54, SMACNA duct standards, and ASHRAE Fundamentals.

However, simply gathering nine books is not enough. You must also have the correct editions, understand which materials belong together in one binder, and organize everything according to current testing rules.

Quick answer: The current Wisconsin HVAC Qualifier reference list includes one Wisconsin code binder, the 2020 SMACNA duct standard, 2013 ASHRAE Fundamentals, 2021 NFPA 54, and five 2021 International Codes.

This guide explains every approved reference, what each one covers, and how to prepare your Wisconsin HVAC code books for the open-book exam.

Complete Wisconsin HVAC Qualifier Reference List

The current DSPS list permits the following nine reference items:

Item	Wisconsin HVAC exam reference	Required edition
1	SPS 320–325, SPS 341, SPS 345, and permitted printed notes in one binder	Current Wisconsin Administrative Code
2	SMACNA HVAC Duct Construction Standards Manual, Metal and Flexible	2020
3	ASHRAE Fundamentals	2013
4	NFPA 54 National Fuel Gas Code	2021
5	International Building Code	2021
6	International Energy Conservation Code	2021
7	International Mechanical Code	2021
8	International Fuel Gas Code	2021
9	International Existing Building Code and SPS 361–366 amendments	2021 and current Wisconsin amendments

Although people commonly search for the “nine Wisconsin HVAC exam books,” the list is technically nine reference items.

The first item combines several Wisconsin Administrative Code chapters and permitted notes in one binder. The ninth combines the International Existing Building Code with Wisconsin amendments affecting the International Codes.

1. Wisconsin Administrative Code Binder

The first permitted reference item is one three-ring binder containing:

Wisconsin Administrative Code SPS 320 through SPS 325
Wisconsin Administrative Code SPS 341
Wisconsin Administrative Code SPS 345
Permitted printed notes

This is one of the most important Wisconsin HVAC Qualifier references because it contains state-specific requirements that may not appear in a generic HVAC study book.

SPS 320 through SPS 325

These chapters form Wisconsin’s Uniform Dwelling Code framework for one-family and two-family dwellings.

They address subjects that can affect residential HVAC installations, including:

Building construction
Energy conservation
Heating and ventilation
Fuel-gas systems
Equipment locations
Ductwork
Combustion air
Safety requirements

SPS 341

SPS 341 covers boilers and pressure vessels.

Commercial boiler questions may require you to begin with this Wisconsin chapter rather than relying only on a general mechanical code.

SPS 345

SPS 345 addresses mechanical refrigeration.

It is another Wisconsin-specific reference that may control subjects that candidates might otherwise search for only in the International Mechanical Code.

Permitted printed notes

DSPS allows printed notes when they are:

Three-hole punched
Placed in the approved binder
Properly organized
Compliant with current exam rules

Practice examinations and previous examinations do not qualify as permitted notes.

2. 2020 SMACNA HVAC Duct Construction Standards

The second approved reference is the 2020 SMACNA HVAC Duct Construction Standards Manual, Metal and Flexible.

SMACNA is used for duct-construction requirements involving subjects such as:

Rectangular duct construction
Round and oval duct
Metal thickness
Pressure classes
Reinforcement
Joint construction
Seal classes
Flexible duct
Hangers and supports

SMACNA questions often require you to work through tables using several variables.

For example, duct dimensions, pressure class, reinforcement classification, and reinforcement spacing may all affect the correct construction selection.

This means you should not merely own the book. You should practice navigating its tables before exam day.

3. 2013 ASHRAE Fundamentals

The required HVAC study book for fundamental calculations and system principles is the 2013 ASHRAE Fundamentals handbook.

This reference includes subjects such as:

Heating and cooling loads
Psychrometrics
Heat transfer
Moisture
Weather data
Ventilation
Thermal comfort
HVAC calculations
System-design fundamentals

ASHRAE Fundamentals is extensive. Reading it from beginning to end is not the most efficient exam-preparation strategy.

Instead, learn how the chapters are organized, identify the most relevant tables, and practice searching for information through the index.

4. 2021 NFPA 54 National Fuel Gas Code

The fourth approved reference is the 2021 NFPA 54 National Fuel Gas Code.

DSPS specifies the portions dealing with gas piping and gas-piping installations as applied through Wisconsin Administrative Code SPS 365.0400.

NFPA 54 may be used for questions involving:

Gas-piping materials
Pipe sizing
Installation requirements
Valves
Connections
Pressure testing
Appliance connections
CSST
Protection and support
Related gas-piping provisions

Because Wisconsin applies state-specific fuel-gas provisions, do not assume that a general national HVAC study guide provides everything you need.

You must understand how NFPA 54, the International Fuel Gas Code, and Wisconsin amendments work together.

5. 2021 International Building Code

The fifth reference is the 2021 International Building Code, commonly called the IBC.

HVAC work does not occur independently of the building around it. Mechanical installations can be affected by:

Occupancy classifications
Construction types
Fire-resistance ratings
Shaft requirements
Equipment locations
Roof access
Openings and penetrations
Fire barriers
Building height and area
Means of egress

A question may appear to be about mechanical equipment while requiring information from the building code.

Learning when to move from the IMC to the IBC is an important open-book exam skill.

6. 2021 International Energy Conservation Code

The sixth approved book is the 2021 International Energy Conservation Code, commonly called the IECC.

The IECC includes commercial and residential energy requirements that affect:

HVAC equipment efficiency
Duct insulation
System controls
Economizers
Equipment sizing
Commissioning
Air leakage
Mechanical-system performance
Energy conservation

Wisconsin amendments can change how base IECC provisions apply.

That is why the IECC should be studied together with the applicable SPS 361 through SPS 366 amendments rather than as an isolated national code.

7. 2021 International Mechanical Code

The 2021 International Mechanical Code, or IMC, is one of the primary Wisconsin HVAC code books on the reference list.

The IMC addresses major mechanical subjects, including:

General mechanical requirements
Ventilation
Exhaust systems
Duct systems
Combustion air
Chimneys and vents
Appliances
Air distribution
Special systems
Mechanical equipment
Installation clearances

Many candidates naturally begin with the IMC because it covers a wide range of HVAC work.

However, not every mechanical question is answered there. Wisconsin may regulate a subject through a separate administrative chapter or modify the base IMC language.

Practice questions should train you to recognize when the IMC is the correct starting reference and when it is not.

8. 2021 International Fuel Gas Code

The eighth reference is the 2021 International Fuel Gas Code, commonly called the IFGC.

The IFGC covers:

Fuel-gas systems
Combustion air
Appliance installation
Venting
Chimneys
Gas-fired equipment
Installation clearances
Fuel-gas definitions
General safety requirements

This book must be used carefully because Wisconsin amendments affect how the base code applies.

A generic HVAC study book may teach the unamended national provision. For the Wisconsin HVAC Qualifier Exam, you must also check the applicable Wisconsin rule.

9. 2021 International Existing Building Code and Wisconsin Amendments

The ninth reference item includes:

The 2021 International Existing Building Code, commonly called the IEBC
Wisconsin Administrative Code SPS 361 through SPS 366 amendments to the International Codes

The IEBC applies to work involving existing buildings, including:

Repairs
Alterations
Additions
Changes of occupancy
Existing building systems
Compliance methods
Work-area classifications

The Wisconsin amendments are critical because they can:

Replace a national provision
Modify a requirement
Add a Wisconsin-specific condition
Delete a base-code section
Change how a table or exception applies

A candidate who studies only the national International Codes may overlook the rule that controls the Wisconsin answer.

Why the Exact Book Editions Matter

The current DSPS HVAC Qualifier reference list specifies:

2020 SMACNA HVAC Duct Construction Standards
2013 ASHRAE Fundamentals
2021 NFPA 54
2021 International Codes
Current applicable Wisconsin Administrative Code provisions

Do not assume an older edition is close enough.

Different editions can contain changes to:

Section numbers
Tables
Exceptions
Definitions
Technical requirements
Referenced standards
Code organization

An older HVAC code book may send you to a provision that has been moved, revised, or removed.

Before buying or printing any Wisconsin HVAC exam books, compare the title and edition against the current official DSPS HVAC Qualifier Exam Information page.

Do You Need All Nine Wisconsin HVAC Exam Books?

You should prepare with access to the complete nine-reference list.

DSPS states that the examination covers information from these materials and allows only these nine reference items into the exam.

Leaving out one book can create a gap in your preparation.

For example:

Without SPS 341, you may struggle with Wisconsin boiler questions.
Without SMACNA, you may lack the correct duct-construction tables.
Without the IECC, you may miss energy and control requirements.
Without Wisconsin amendments, you may apply the national model code incorrectly.
Without the IEBC, you may be unprepared for existing-building scenarios.

You may not use every book equally, but each has a purpose.

Can One HVAC Study Book Replace the References?

No single general HVAC study book replaces the complete DSPS list.

A general guide may explain:

Refrigeration principles
Heating equipment
Electrical fundamentals
Airflow
Troubleshooting
Service procedures

Those subjects can be useful professionally, but the Wisconsin HVAC Qualifier Exam requires you to navigate specific codes, standards, and state amendments.

A study guide can support your preparation. It cannot replace the approved Wisconsin HVAC qualifier references.

Can You Use Digital HVAC Code Books During the Exam?

Digital copies can be useful while studying because they allow you to search, review, and print the material.

However, DSPS exam locations permit the physical reference materials identified on the official list. Printed code materials must be properly bound.

Candidates should prepare physical copies that comply with current testing rules rather than depending on a laptop, tablet, phone, or online code access.

Phones, smart devices, and internet-connected equipment are not permitted as substitutes for the approved reference books.

How Should the Books Be Organized?

DSPS permits:

Bound code books
Printed code properly secured in a three-ring binder
Three-ring paper dividers with tabs
Tabs that are part of a bound code book
Properly prepared printed notes in the designated binder

DSPS does not permit:

Loose pages
Removable tabs
Sticky notes
Paperclips
Practice examinations
Previous examinations

Use short, clear labels that help you identify major sections quickly.

Your binder should make navigation easier, not create dozens of nearly identical tabs.

For additional setup guidance, read Wisconsin HVAC Qualifier Study Materials: What You Need to Prepare.

How to Study With the Wisconsin HVAC Code Books

Owning the correct books is only the beginning.

Use the following process throughout your preparation.

Learn what each reference covers

You should be able to recognize which book is the likely starting point for boilers, gas piping, duct construction, ventilation, energy, or existing-building questions.

Practice with the books open

Use the actual references while answering questions.

This helps you practice the same decision-making and lookup process required during an open-book exam.

Use the indexes

Learn the formal terms used by each code.

A question may use common trade language while the index uses a technical term.

Read table headings and notes

Do not select an answer after finding only one matching number.

Confirm:

Units
Conditions
Table headings
Exceptions
Footnotes
Referenced sections

Check Wisconsin amendments

Before finalizing an answer from a 2021 International Code, determine whether an SPS provision changes the base language.

Record difficult lookups

Maintain a list of subjects that take too long to find. Review those locations until the process becomes familiar.

For a complete preparation method, read How to Study for the Wisconsin HVAC Qualifier Exam.

Buying the Books Separately vs. Using a Complete Bundle

Buying the Wisconsin HVAC exam books separately means you must:

Find every correct title.
Confirm every required edition.
Locate the Wisconsin Administrative Code chapters.
Print and bind applicable materials.
Organize the references correctly.
Create a tabbing system.
Find Wisconsin-specific practice questions.
Build your own study plan.

This approach is possible, but it takes time and careful verification.

A complete Wisconsin-specific preparation bundle removes much of that setup work and lets you focus on learning how to use the materials.

Wisconsin HVAC Exam Book Checklist

Before beginning serious preparation, confirm that you have:

The checklist contains more than nine individual lines because several codes are combined into the nine official reference items.

Frequently Asked Questions

How many books are allowed in the Wisconsin HVAC Qualifier Exam?

DSPS permits nine reference items. Some items contain multiple related codes or documents.

Which edition of the International Mechanical Code do I need?

The current DSPS list identifies the 2021 International Mechanical Code.

Which SMACNA book is required?

The approved reference is the 2020 SMACNA HVAC Duct Construction Standards Manual for Metal and Flexible Duct.

Which ASHRAE Fundamentals edition is required?

The current reference list identifies the 2013 ASHRAE Fundamentals handbook.

Do I need NFPA 54 and the International Fuel Gas Code?

Yes. The DSPS list includes both the 2021 NFPA 54 and the 2021 International Fuel Gas Code, with NFPA 54 limited to the applicable gas-piping portions identified by Wisconsin rules.

Can I bring handwritten notes?

The current DSPS page specifically discusses printed notes placed in the designated binder. Prepare your notes according to the published requirements and verify the current rules before the exam.

Can I bring practice-test questions in my binder?

No. DSPS states that practice examinations and previous examinations do not qualify as notes and are not allowed.

Are older Wisconsin HVAC code books acceptable?

The safest approach is to use the exact editions currently identified by DSPS. Older books may contain different language, tables, or section numbers.

Get the Complete Wisconsin HVAC Reference System

Finding the correct Wisconsin HVAC exam books is the first step. The next step is learning how to use them quickly and accurately.

Our Wisconsin HVAC Qualifier Exam Prep Bundle includes:

All nine approved reference materials
1,200 practice questions
Seven major question categories
Wisconsin-specific answer explanations
A professional binder setup and tabbing guide
Instant digital access
No subscription or recurring charge

The complete preparation package is available for a one-time price of $199.

Get the Complete Wisconsin HVAC Exam Books and Practice Bundle

You can also try three examples in our Wisconsin HVAC Qualifier Practice Test guide.

Gather the correct editions, organize them before exam day, and practice locating answers until every reference has a clear purpose in your preparation.

Exam references and testing rules may change. Always review the current DSPS HVAC Qualifier Exam Information before purchasing materials or attending your scheduled exam.