Pass the Florida Mechanical Contractor exam with confidence. Courses, tabbed books, practice exams, and application help in one place. Start today from $79 in the Florida Mechanical Contractor collection.
What Is a Florida Mechanical Contractor?
A Florida Mechanical Contractor is a Division II certified contractor licensed by the Florida Department of Business and Professional Regulation (DBPR) through the Construction Industry Licensing Board (CILB). Of all the mechanical and air conditioning classifications in Florida, the Mechanical Contractor license carries the broadest scope, which is why it is the most versatile and the most valuable credential in this trade.
Under Florida Statute 489.105, a Mechanical Contractor's scope covers central air conditioning, refrigeration, heating and ventilating systems, ductwork, boilers and unfired pressure vessels, lift station equipment and piping, process and pressure piping, pneumatic controls, fuel-carrying lines, low-voltage HVAC control wiring, and condensate drains. In plain terms, if it moves air, heat, refrigerant, gas, or pressurized fluid through a building's mechanical systems, a Mechanical Contractor is usually the one licensed to install it.
The statute is just as clear about what falls outside the scope. A Mechanical Contractor cannot install potable water lines, sanitary sewer lines, swimming pool piping and filters, or general electrical power wiring beyond the allowed HVAC-related low-voltage work. Those belong to plumbing and electrical classifications.
This page walks through that scope, the two exams, the fifteen required reference books, a full study plan, the application path, and how Mechanical compares to Air A and Air B. Everything you need to study is in the Florida Mechanical Contractor collection.
What Work Can a Florida Mechanical Contractor Perform?
The allowed scope is broad. Here is the work you can legally contract, with the exam topics each area connects to on the Trade Knowledge exam.
| Allowed Work | Examples | Connected Exam Topics |
|---|---|---|
| HVAC systems | Central air, split systems, rooftop units, chillers | Psychrometrics, CFM, EER/SEER, load calcs |
| Refrigeration | Commercial refrigeration, walk-ins, process cooling | Refrigeration cycle, troubleshooting, charging |
| Heating | Furnaces, heat pumps, hydronic heating | Combustion, heat transfer, fuel gas code |
| Ventilation | Exhaust systems, make-up air, IAQ systems | NFPA 90A/90B, fan curves, air distribution |
| Ductwork | Sheet metal duct, flex, grease ducts | SMACNA standards, duct sizing, Ductulator |
| Boilers & pressure vessels | Boilers, unfired pressure vessels | Pressure piping, safety, code interpretation |
| Process & pressure piping | Industrial process lines, pressure systems | Pipe sizing, Pipefitters Handbook, materials |
| Fuel lines | Natural gas and fuel transmission lines | Florida Building Code Fuel Gas, NFPA |
| Low-voltage HVAC controls | Thermostats, pneumatic and DDC controls | Controls, wiring limits, system operation |
| Condensate drains | Drainage for HVAC and refrigeration | Drainage, code, condensate handling |
| Lift station equipment | Lift station equipment and piping | Piping, pumps, mechanical systems |
What Work Is Not Included in the Mechanical Scope?
Knowing the limits keeps you out of trouble with the CILB. These fall outside the Mechanical classification.
| Excluded Work | Usually Requires | Notes |
|---|---|---|
| Potable water lines | Plumbing Contractor | Domestic water supply is plumbing scope |
| Sanitary sewer lines | Plumbing Contractor | Waste and sewer piping is plumbing scope |
| Swimming pool piping & filters | Pool/Spa Contractor | Pool circulation and filtration is a separate trade |
| General electrical power wiring | Electrical Contractor | Only HVAC-related low-voltage control wiring is allowed |
The gray areas trip people up. HVAC-related low-voltage control wiring is allowed, but line-voltage power wiring is not. Fuel gas piping is in scope, but potable water is not. When a project blends trades, confirm scope with the DBPR or bring in the right licensed sub. Questions? Call 866-707-2733.
Florida Mechanical Contractor Exam Breakdown
Division II contractors, including Mechanical, pass two exam parts. Both are open book and computer based, and both require at least 70 percent to pass.
Business & Finance120 scored questions · 6.5 hours · 70% to pass · open book
Mechanical Trade Knowledge130 scored questions · 7.5 hours · 70% to pass · open book + architect's scale
Total Testing Load250 questions across 14 hours
ScoringParts scored separately. Retake only the part you missed.
Score ValidityPassing scores valid for 4 years
Exam ApplicationProfessional Testing, Inc. — 30 days before your date
DeliveryPearson VUE testing centers
Reference Books15 approved trade references
Good to know: the two parts are scored separately, so if you pass one and not the other, you keep the passing score and only retake the part you missed. Because both exams are open book and timed, your speed at locating answers in the approved references is what usually decides the outcome. Always confirm current question counts, times, and fees in the DBPR candidate information bulletin before your test date.
Your Mechanical Contractor Licensing Roadmap
Seven steps take you from eligibility to an active statewide license. Most candidates finish exam prep and application in a few months.
1
Verify eligibility
Confirm you meet Florida's basic requirements for a certified Mechanical Contractor. You must generally:
- Be at least 18 years old and of good moral character
- Have four years of proven mechanical experience, or an approved college and experience combination
- Show a FICO-derived credit score of at least 660, or plan to post a bond
- Plan to carry the required insurance and workers' compensation or exemption
Up to three years of accredited college credit can count toward the experience requirement. Military service may also count.
2
Apply through Professional Testing
Construction exam candidates apply through Professional Testing, Inc. Completed applications and fees must be received about 30 days before your exam date, so plan ahead. Do not wait until your books arrive to start this clock.
3
Prepare for both exams
This is where pass or fail is decided. Both exams are open book, but they are timed and dense. Success depends on knowing your references and locating answers fast.
- Online self-study and live virtual classes
- Tabbing and highlighting guides for all 15 trade books
- Timed practice questions and exam simulators
- Exam-ready book sets and application assistance
- Everything is in the Florida Mechanical Contractor collection
4
Pass the Business & Finance exam
Schedule through Pearson VUE and score at least 70 percent on the 120-question, 6.5-hour open book exam. It covers accounting, contracts, lien law, estimating, payroll, insurance, and Florida contracting law, and is required for every construction classification.
5
Pass the Mechanical Trade Knowledge exam
This is the 130-question, 7.5-hour open book trade exam. Bring your approved reference books and an architect's scale. Score 70 percent or higher. Passing scores stay valid for four years.
6
Submit your DBPR application
After passing both exams, file your licensure application with fingerprints, experience verification, credit report, and financial statements for CILB review. Incomplete applications are the top cause of delays.
7
Complete insurance & activate
Provide public liability and property damage insurance and workers' compensation or a valid exemption, and meet the credit or bond requirement. Once DBPR accepts your documentation, your license activates and you can contract statewide in all 67 counties.
What Is on the Mechanical Trade Knowledge Exam?
The 130-question trade exam is far more than HVAC service knowledge. It spans design, code, calculations, safety, and plan reading. Here are the topic areas you will face.
Pre-installation & design engineering
Ductwork & HVAC materials
Refrigeration & HVAC systems
Mechanical systems
Refrigeration & HVAC equipment
Maintenance & service
Safety & equipment
Excavating
Plan reading
Code interpretation
Basic math
Pipe sizing
Psychrometrics
CFM
EER & SEER
Fan curves
Pump curves
Grease duct systems
Fire code
Rigging
Equipment loads
What this means for study: the exam blends calculation-heavy topics (pipe sizing, CFM, psychrometrics, fan and pump curves, equipment loads) with code lookup (Florida Building Code Mechanical, Energy, and Fuel Gas, plus the NFPA standards) and hands-on knowledge (refrigeration troubleshooting, duct construction, rigging, safety). You cannot memorize your way through it, and you cannot rely on field experience alone. The winners are candidates who practice locating answers and running calculations under time pressure, which is exactly what the courses in the Mechanical collection drill.
Florida Mechanical Contractor Required Books (2026)
Most pages stop at a plain list. Here is what each 2026 reference is actually used for, why it matters, and how to prioritize it. Complete tabbed and highlighted sets are in the Florida Mechanical Contractor collection. Confirm the current list in the DBPR bulletin before buying.
| Book | Used For | Why It Matters | Study Priority |
|---|---|---|---|
| Refrigeration & Air Conditioning Technology | Core HVAC/refrigeration theory | Anchors the largest block of trade questions | High |
| A/C & Refrigeration Troubleshooting Handbook | Diagnostics & service | Maintenance and service questions | High |
| FBC — Mechanical | Mechanical code lookup | Heavy code-interpretation source | High |
| FBC — Fuel Gas | Fuel gas piping & appliances | Fuel line and gas code questions | High |
| SMACNA Duct Standards | Duct construction | Sheet metal and duct sizing | High |
| Trane Ductulator | Duct sizing tool | Fast air and duct calculations | High |
| FBC — Energy Conservation | Energy code compliance | Efficiency and energy questions | Medium |
| Pipefitters Handbook | Pipe sizing & fitting | Process and pressure piping math | Medium |
| NFPA 90A & 90B | Air systems fire safety | Ventilation and duct fire provisions | Medium |
| NFPA 96 | Grease duct / commercial kitchens | Grease duct system questions | Medium |
| OSHA 29 CFR 1926 | Construction safety | Safety and equipment questions | Medium |
| Energy Efficient Building Construction in FL | Florida-specific efficiency | State energy practice questions | Medium |
| Contractor's Manual | Licensing & business overlap | Rules and contractor practice | Medium |
| NFPA 99 | Health care facilities | Specialized mechanical provisions | Low–Med |
Pass faster with a pre-built set. Fifteen books is a lot of marking up. The highlighted and tabbed Mechanical sets in the collection arrive already marked where the most-tested answers live, so exam time goes to locating answers instead of flipping pages, and study time goes to practice instead of prep work.
How to Use the Books During the Open Book Exam
Open book does not mean easy. With 250 total questions across 14 hours of testing, your book strategy is the single biggest lever on your score.
Winning open-book habits
- Apply permanent tabs to every book before exam day
- Highlight sparingly so the key line stands out, not the whole page
- Build a personal index of where each topic lives
- Practice locating answers, not reading chapters
- Keep the Ductulator and architect's scale within reach
- Split study time across code books, NFPA, SMACNA, and calculations
What is not allowed / what fails
- Handwritten notes or loose papers inserted in books
- Reading a reference cover to cover during the exam
- Relying on memory instead of confirming in the code
- Un-tabbed books that cost you minutes per lookup
- Over-highlighting that buries the answer
- Skipping calculation practice for pipe sizing and CFM
Mechanical vs Air A vs Air B Contractor License
Choosing the right classification matters. Mechanical is the broadest, Air A is next, and Air B is limited by system size.
| License | Scope | Best For | Key Limit | Exam Prep |
|---|---|---|---|---|
| Mechanical | Full mechanical: HVAC, refrigeration, heating, boilers, process & pressure piping, fuel lines, ductwork, controls | Contractors wanting the widest scope and largest projects | Excludes potable water, sewer, pool, general electrical | Mechanical collection → |
| Air A (Class A A/C) | Air conditioning, refrigeration & heating of any size | HVAC contractors focused on any-size A/C without full mechanical scope | No boilers or process piping breadth | Air A collection → |
| Air B (Class B A/C) | A/C, refrigeration & heating up to ~25 tons cooling / 500,000 BTU heating | Residential and light commercial HVAC | Hard capacity cap on system size | Air B collection → |
Which should you pick? If you want no size cap and the broadest mechanical scope, including boilers, process piping, and fuel lines, Mechanical is the strongest license. If your work is air conditioning of any size but not the wider mechanical trades, Air A fits. If you do residential and light commercial HVAC under the capacity limit, Air B is the fastest path. Not sure? Call 866-707-2733. Always verify current capacity limits and scope with the DBPR, as figures can change.
Florida Mechanical Contractor License Requirements
The requirements are set by the CILB and are uniform statewide for certified contractors. Here is the full checklist.
| Requirement | Detail |
|---|---|
| Age & character | At least 18 and of good moral character |
| Experience | 4 years of proven mechanical experience, at least 1 year supervisory |
| College substitution | Up to 3 years of accredited college credit can count toward experience |
| Military | Relevant technical experience may count and qualify for waivers |
| Fingerprints | Electronic fingerprinting and background check required |
| Financial responsibility | Credit report with FICO-derived score reviewed by the board |
| Credit score / bond | Generally 660+; below that, post a bond (reducible 50% after a 14-hour course) |
| Insurance | Public liability and property damage coverage |
| Workers' compensation | Coverage if you have employees, or a valid exemption |
| Business entity | Register the business if you will qualify a company |
| Qualifying agent | You can qualify yourself or a company as the qualifying agent |
The Florida Business & Finance Exam
Every Florida construction classification requires the Business and Finance exam. It is 120 questions over 6.5 hours, open book, and covers the business side of running a contracting company.
Trade-focused candidates often underestimate this exam and it costs them. Business and Finance tests business setup and entity structure, accounting and financial statements, contracts and project management, payroll, insurance, tax basics, Florida's construction lien law, estimating, and contractor financial responsibility, along with OSHA and employment law topics. It is a lookup-and-calculation exam like the trade portion, so the same open-book discipline applies: tab your references, practice the accounting and lien-law questions, and drill the financial calculations until they are fast.
Because Business and Finance is shared across every classification, passing it also positions you if you later add another license. Give it equal weight in your study plan rather than treating it as an afterthought behind the trade exam. The combo packages in the Florida Mechanical Contractor collection include Business & Finance prep alongside the Mechanical trade material.
90-Day Mechanical Contractor Study Plan
A structured plan is the difference between passing and running out of time on a 14-hour exam load. Here is a proven 12-week schedule you can adapt.
Weeks 1–2
Setup & Scope
- Learn the exam rules and open-book requirements
- Tab and index all 15 reference books
- Study the license scope and exclusions
- Set your Pearson VUE and application timeline
Weeks 3–4
Business & Finance
- Accounting, financial statements, payroll
- Contracts, lien law, project management
- Estimating and financial responsibility
- First timed Business practice set
Weeks 5–6
HVAC, Refrigeration & Duct
- Refrigeration cycle and troubleshooting
- HVAC systems and equipment
- Ductwork, SMACNA, and the Ductulator
- Psychrometrics, CFM, EER/SEER
Weeks 7–8
Fuel Gas & Mechanical Code
- Florida Building Code Mechanical lookups
- Fuel Gas code and fuel line piping
- Energy Conservation code
- Code-interpretation practice questions
Weeks 9–10
NFPA, SMACNA, OSHA & Piping
- NFPA 90A, 90B, 96, and 99 provisions
- Grease duct systems and fire code
- OSHA safety and rigging
- Pipe sizing and pressure piping math
Weeks 11–12
Practice & Timing
- Full-length timed simulations, both parts
- Answer-location drills under the clock
- Rework missed questions and re-tab weak spots
- Finalize exam day logistics and schedule
Exam Day Checklist
Open-book exams reward preparation and logistics. Here is what to bring and what to avoid.
Bring & do this
- All approved reference books with permanent tabs
- An architect's scale for the Trade Knowledge exam
- Approved calculator per the exam rules
- Valid government-issued photo ID matching your registration
- Your Pearson VUE confirmation and arrival time
- A time strategy: locate-and-answer first, flag the hard ones
Do not do this
- Bring loose notes or handwritten inserts
- Bring unbound or unauthorized printed PDFs
- Read entire books during the exam
- Rely on memory over the code reference
- Spend too long on any single question
- Skip your break strategy across the long session
How Hard Is the Florida Mechanical Contractor Exam?
Honestly, it is one of the tougher construction exams in Florida, and not because the questions are tricky. It is hard because of breadth and speed. The Trade Knowledge exam alone is 130 questions across 7.5 hours, and it reaches well beyond HVAC service work into code interpretation, duct design, pipe sizing, refrigeration theory, psychrometrics, fan and pump curves, NFPA and SMACNA standards, plan reading, rigging, and safety. Add the 120-question Business and Finance exam and you are looking at 250 questions and 14 hours of testing.
The open-book format helps, but it fools people. Candidates who assume they can look everything up on the fly run out of time, because every un-tabbed lookup costs minutes they do not have. The people who pass are the ones who organized their references, built an index, practiced the calculations, and drilled answer-location under a timer. That is exactly what structured prep is built to do, and it is why prepared candidates pass at far higher rates than those who wing it on field experience alone.
Common Reasons People Fail (and How to Avoid Them)
Nearly every failed attempt traces back to one of these six.
| Reason | Why It Happens | The Fix |
|---|---|---|
| Running out of time | 250 questions over 14 hours punishes slow lookups | Drill answer-location under a timer |
| Un-tabbed books | Every lookup costs minutes | Tab and index before exam day, or buy pre-tabbed sets |
| Skipping Business & Finance | Trade-focused candidates neglect it | Give it equal study time |
| Weak on calculations | Pipe sizing, CFM, psychrometrics trip people up | Practice the math, not just theory |
| Ignoring the scale | Plan reading needs an architect's scale | Practice measuring scaled drawings |
| Memorizing | The exam rewards locating, not recall | Learn where answers live in each book |
After You Pass the Exam
Passing both parts is a milestone, not the finish line. Once you have passed Business and Finance and Mechanical Trade Knowledge, you submit your DBPR licensure application for CILB review. That package includes your fingerprints and background check, your experience verification, your credit report and financial statements for financial responsibility, and proof of insurance, public liability and property damage plus workers' compensation or a valid exemption. If you are qualifying a company, you will include the business documentation and act as the qualifying agent.
After DBPR processes and approves the application, your license is activated and you can legally contract for mechanical work statewide in all 67 counties. From there, keep an eye on renewal: certified Mechanical Contractors complete 14 hours of continuing education each cycle, including a specialized or advanced module, workplace safety, business practices, workers' compensation, and laws and rules, with the remaining hours in board-approved construction instruction. Track your renewal date so your license never lapses.
Florida Mechanical Contractor Course Options
Pick the level of support that fits how you study. Every option is built specifically for the Mechanical classification, not generic HVAC content. All are in the Florida Mechanical Contractor collection.
Online Course
From $79
- Self-paced Mechanical trade & Business/Finance modules
- Timed practice questions by topic
- Study anywhere, start immediately
- Ideal for disciplined self-studiers
Full Package
Best value
- Online course + live virtual classes
- Highlighted & tabbed 15-book set
- Practice exams and simulators
- Application assistance included
Books & Add-Ons
Flexible
- Books-only or tabbed & highlighted sets
- Live class upgrade available
- CILB application assistance
- Continuing education when you renew
Working Without a License Isn't Worth the Risk
Performing mechanical contracting work without the proper Florida license can lead to serious consequences, including:
· Criminal charges and fines under Florida Statute 489
· Inability to enforce contracts or legally collect payment
· Loss of lien rights and stop-work orders
· Disciplinary action and lasting damage to your reputation
Get licensed the right way before you advertise, bid, pull permits, or perform mechanical work in Florida. Our 98.7% pass rate means you get licensed fast and stay protected.
Florida Mechanical Contractor FAQ
Scope & What You Can Do
A Division II certified contractor licensed by the DBPR with the broadest mechanical scope: central air conditioning, refrigeration, heating and ventilating systems, ductwork, boilers, unfired pressure vessels, lift station equipment and piping, process and pressure piping, fuel lines, low-voltage HVAC controls, and condensate drains. Prep for it in the Mechanical collection.
Install, maintain, repair, and alter HVAC, refrigeration, heating, and ventilation systems, ductwork, boilers and unfired pressure vessels, process and pressure piping, pneumatic controls, fuel gas lines, low-voltage HVAC controls, condensate drains, and lift station equipment. It does not cover potable water, sanitary sewer, pool piping, or general electrical power wiring.
Yes to both. Boilers and unfired pressure vessels are within scope, and so are fuel-carrying and natural gas lines. These are two of the key areas that set Mechanical apart from the air conditioning classifications, which is why the Florida Building Code Fuel Gas volume and the NFPA standards are on the reference list.
Only within the mechanical scope. HVAC-related piping, fuel lines, and low-voltage HVAC controls are allowed, but potable water lines, sanitary sewer lines, pool piping, and general electrical power wiring require the appropriate plumbing or electrical license.
Mechanical vs Air A vs Air B
No. Mechanical is broader. Air A covers air conditioning, refrigeration, and heating of any size but not the full mechanical scope such as boilers, process piping, and certain fuel and pressure piping work that Mechanical includes. Compare the Mechanical collection and the Air A collection.
No. Air B is limited to air conditioning, refrigeration, and heating up to a set capacity, typically around 25 tons of cooling and 500,000 BTU of heating. Mechanical has no such size cap and a much wider scope. See the Air B collection if that fits your work.
The Exams
The Mechanical Trade Knowledge exam has 130 scored questions over 7.5 hours. The Business and Finance exam has 120 scored questions over 6.5 hours. That is 250 questions across 14 hours of testing. You must pass both with 70 percent or higher.
Yes, both parts are open book. Permanent tabs and highlighting are allowed and strongly recommended, since they are the biggest time savers on a timed open-book exam. Handwritten notes and loose papers are not allowed. Pre-tabbed and pre-highlighted 15-book sets are in the Mechanical collection.
It is challenging because of breadth and speed: 250 questions across 14 hours covering code, math, duct design, pipe sizing, refrigeration, safety, NFPA, SMACNA, plan reading, and business. Open book helps, but organization and timed practice are what get people through.
Yes. The two parts are scored separately, so you only retake the part you did not pass, paying the fee again and rescheduling through the vendor.
Books & Study
The 2026 trade list includes the A/C & Refrigeration Troubleshooting Handbook, OSHA 29 CFR 1926, Contractor's Manual, Pipefitters Handbook, NFPA 90A/90B/96/99, SMACNA duct standards, Refrigeration & Air Conditioning Technology, the Trane Ductulator, Energy Efficient Building Construction in Florida, and the FBC Mechanical, Energy Conservation, and Fuel Gas volumes. Complete sets are in the Mechanical collection. Confirm the current list in the DBPR bulletin.
Yes. You must bring an architect's scale for the Trade Knowledge exam because of the plan reading questions that require measuring scaled drawings.
Many candidates budget around 90 days and roughly 90 hours across both parts. Candidates using pre-tabbed and pre-highlighted books usually shorten that timeline, because their study hours go into practice questions and calculations instead of marking up fifteen books.
Many candidates do. Fifteen books is a lot of marking up, and pre-tabbed sets are marked where the most-tested answers live, saving significant time on a timed exam. It is optional but a real advantage. Compare sets here.
Requirements, Application & After
Confirm eligibility, apply through Professional Testing to take the exams, pass both parts with 70 percent or higher, then submit your DBPR application with fingerprints, financial responsibility documentation, and insurance. Once approved and activated, you can contract statewide.
Generally four years of proven mechanical experience, at least one year supervisory, or an approved combination of college and experience. Up to three years of accredited college credit can count. Military technical experience may also apply.
You apply through Professional Testing, Inc., and after approval most exams are scheduled and delivered through Pearson VUE testing centers. Completed applications and fees must be received about 30 days before your exam date, so plan your timeline accordingly.
Passing exam scores are valid for four years, giving you time to complete your experience documentation and file your application after you test.
You can still qualify by posting a licensing bond. That bond can be reduced by 50 percent after you complete a 14-hour financial responsibility course approved by the board.
Public liability and property damage insurance, plus workers' compensation if you have employees or a valid exemption. Proof is submitted to the DBPR before activation.
Both. You can act as the qualifying agent for a business, which requires the appropriate business documentation with your application. You can also hold the license as an individual and qualify yourself, then qualify a company later. You do not have to own a business to get certified.
Yes. Certified Mechanical Contractors complete 14 hours of continuing education each renewal cycle, including a specialized or advanced module, workplace safety, business practices, workers' compensation, and laws and rules, with remaining hours in board-approved instruction.
How to Get Your Florida Mechanical Contractor License in 2026
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