Nebraska issues no statewide HVAC license. Omaha's ACAD board and Lincoln's mechanical ladder run the show, Department of Labor registration is now $40 a year, and there is a state Heating/AC/Refrigeration license sitting on the electrical board's fee schedule.
Nebraska has no statewide HVAC license. There is no state mechanical board, no state HVAC contractor credential, and no single application that makes you legal to install heating and cooling equipment across the state.
But there is a state-level license with "Heating/AC/Refrigeration" printed on the fee schedule, and it is not issued by a mechanical board. It is issued by the Nebraska State Electrical Division. That single fact is responsible for more confusion among Nebraska HVAC contractors than anything else in this guide, and almost no other page on the internet mentions it.
Here is the actual structure.
The three things that govern HVAC work in Nebraska
- Nebraska Department of Labor contractor registration. Statewide, mandatory, no exam. The fee changed on August 1, 2026.
- City mechanical licensing. Omaha's Air Conditioning and Air Distribution (ACAD) board and Lincoln's Building and Safety Department each run their own programs. They do not match.
- Federal EPA Section 608 certification. Required to purchase or handle regulated refrigerants, regardless of what any state or city says.
There is also the state electrical layer, which is where the "Heating/AC/Refrigeration" license lives. We get to that below.
Every fee in this guide is set by a state agency, a city, or a testing vendor, and every one of them changes. Verify current amounts with the issuing office before you budget.
Layer 1: Contractor registration with the Nebraska Department of Labor
Before performing any construction work in Nebraska, you register with NDOL under the Contractor Registration Act, Neb. Rev. Stat. §§ 48-2101 through 48-2117. "Construction" under § 48-2103(2) means work on real property including new work, additions, alterations, reconstruction, installations, and repairs, HVAC installation is squarely inside that.
The Legislature stated plainly in § 48-2102 that registration "is not the intent of the Legislature to endorse the quality or performance of services provided by any individual contractor." No exam. No experience requirement. No bond. It is a filing.
What it takes
Section 48-2105 requires the business name and FEIN, the Nebraska principal place of business (or the out-of-state address plus a Nebraska registered agent), a Nebraska phone number, entity type, officers or owners, a business description, and proof of workers' compensation coverage.
Contractors with one or more employees file a current ACORD 25 certificate naming the Department of Labor as certificate holder. If the carrier reports a cancellation, § 48-2110 has the commissioner revoke the registration as of the cancellation date unless replacement coverage is on file first. Under § 48-2111 a revoked registration is never permanently reinstated, you reapply for a new number.
The August 1, 2026 fee change
LB847, approved by the Governor on April 7, 2026, amended § 48-2107. The statute now reads that each application or renewal "shall be signed by the applicant and accompanied by a fee not to exceed forty dollars."
NDOL's binding guidance document issued under Neb. Rev. Stat. § 84-901.03 states:
"Effective August 1, 2026, the application and renewal fee required under Neb. Rev. Stat. § 48-2107 shall be forty dollars ($40.00)."
Registration renews annually. Most Nebraska HVAC licensing pages still quote the old amount.
The small-operator exemption
Section 48-2104(1) exempts a person working on their own property and "any person who earns less than five thousand dollars annually for construction services." Below the threshold you are not a contractor under the Act, but you are still subject to Nebraska withholding requirements under § 48-2104(2), and you are still bound by whatever the city where the equipment sits requires.
Penalty
Section 48-2114 authorizes an administrative penalty of not more than $500 for a first violation and not more than $5,000 for a second or subsequent violation, with fifteen working days to contest.
Layer 2: The state license nobody tells HVAC contractors about
Here is the part that gets missed.
The Nebraska State Electrical Division (NSED) publishes a license and registration fee schedule. On the 2025 to 2026 schedule, alongside Electrical Contractor, Class A Master, Journeyman Electrician and Residential Wireman, there is a line item reading:
Heating/AC/Refrigeration, $37.50
That figure is per year of the two-year license period. Licenses on that schedule expire December 31, 2026. NSED groups it with Irrigation, Sign Installer, and Fire Alarm Installer at the same $37.50 rate, and publishes specialty license exam dates, most recently September 16, 2026 and October 14, 2026.
This is not a mechanical license. It sits inside Nebraska's electrical licensing scheme, administered by NSED under the Nebraska State Electrical Act. It does not replace an Omaha ACAD license or a Lincoln mechanical registration, and it does not make you a licensed HVAC contractor in Nebraska, because no such statewide thing exists.
What it does mean is that if your HVAC technicians are performing electrical work in connection with heating, air conditioning, or refrigeration equipment, there is a state-level credential and a state-level exam that may apply to them, and it is administered by the electrical board, not a mechanical one. Confirm the scope directly with NSED before assuming your crew is covered or that they need it.
NSED exams cover the 2023 National Electrical Code, basic electrical theory, the Nebraska State Electrical Act, and emergency circuits including fire alarm circuits. The 2023 NEC took effect for Nebraska electrical permits and exams on August 1, 2024, following the Governor's April 19, 2024 approval of the legislative change updating Neb. Rev. Stat. § 81-2104(5). NSED also awards 6 hours of continuing education credit for passing an exam.
The practical takeaway: in Nebraska, electrical licensing is a state function and mechanical licensing is a city function. That is the inverse of most states, and it is exactly backwards from what contractors expect. Our Nebraska electrician license guide covers the state electrical ladder in full.
Layer 3: Omaha's ACAD board
The City of Omaha licenses HVAC work through its Air Conditioning and Air Distribution board, and the credential is called an ACAD license rather than an HVAC license. The Permits and Inspections Division administers it.
Omaha issues ACAD apprentice, ACAD journeyman, and master ACAD contractor licenses, plus a separate residential-restricted master tier. It also runs an entirely separate mechanical set that HVAC contractors routinely collide with: Steam Fitter Contractor, Steam Fitter Journeyman, Oil Burner Installer, Oil Tank Installer, LPG Tank Installer, and Stationary Engineer First and Second Grade. Which one you need depends on what equipment you touch, not on your job title.
Master ACAD contractor qualification is reported by the city as four or more years of verifiable experience installing ACAD systems while employed by a licensed master ACAD contractor after obtaining an Omaha journeyman ACAD license, or eight or more years of experience installing ACAD systems. The exam requires a minimum score of 75%. Confirm the current standard with the ACAD board before applying; qualification criteria are set by the city and change.
Bond and insurance. Mechanical contractor licenses carry a $10,000 surety bond. Omaha publishes a $300,000 liability insurance minimum for Steamfitter and Master ACAD contractors. Licenses expire December 31, and Omaha allows purchase of a license term of up to three years before renewal.
Continuing education. Omaha publishes 8 hours for the ACAD Master Contractor and 8 hours for the ACAD Journeyman.
Application fees published by the city include roughly $50 plus a technology fee for the ACAD Master Contractor, roughly $35 plus a technology fee for the ACAD Journeyman, and roughly $25 plus a technology fee for the Apprentice ACAD and Sheet Metal Installer. City fee schedules change, verify before you apply.
Permits. Omaha requires a mechanical permit to install, repair, alter or replace any air conditioning or air distribution system, exhaust system, or equipment.
Layer 4: Lincoln's mechanical ladder
Lincoln's Building and Safety Department licenses mechanical trades under Chapter 25 of the Lincoln Municipal Code, a completely different structure from Omaha's, and one with a detail that matters enormously for career planning.
Lincoln requires three years, not four
Mechanical apprentice. Register while working for a licensed mechanical journeyman or licensed master mechanical contractor.
Mechanical journeyman. Lincoln requires three years of practical experience in the design, layout, construction and/or installation of mechanical equipment before you may sit the exam. Compare that to Lincoln's own plumbing journeyman requirement of four years for the same city, same department, same building.
Lincoln publishes explicit substitutions against the three years: a two-year course of study in mechanical design, construction and installation counts for one year; an accredited four-year engineering course counts for two; a Mechanical Engineer registered in the State of Nebraska receives all three; and military, extension, and adult education training may count.
Master mechanical contractor. Hold a valid mechanical journeyman license for at least one year, then pass the master contractor exam.
Three years plus one is the fastest path to running a mechanical contracting business in Lincoln. That is materially shorter than Omaha's ACAD master route and shorter than Lincoln's own plumbing route.
Lincoln's mechanical fees and renewal window
- Mechanical, Master Contractor, $350
- Mechanical, Inactive Master, $50
- Mechanical, Journeyman, $25
- Mechanical, Apprentice, $15
- Refrigeration/Mechanical, Master Contractor, $250
- Deco Fireplace, Fireplace Contractor, $150
- Deco Fireplace, Fireplace Installer, $25
Fees are set by the City of Lincoln and are subject to change, verify with Building and Safety before applying.
Two things in that list deserve attention. First, Lincoln offers an Inactive Master status at $50 a year, a way to hold the credential without practicing, which matters when a master leaves a company or steps back. Second, Refrigeration is a separate Master Contractor license at $250, distinct from the general mechanical master at $350.
Renewal runs October 1 through December 31. Failure to renew within 60 days of expiration revokes the license and requires re-taking any exams the license requires.
Continuing education: a Master Contractor needs 8 hours of CEUs; a Journeyman needs 4 hours. Both must be submitted and approved before the renewal is approved.
Now compare renewal calendars inside a single city:
- Mechanical, Renewal window: Oct 1, Dec 31 · Master CEU: 8 hours · Journeyman CEU: 4 hours
- Plumbing, Renewal window: Mar 1, May 31 · Master CEU: 10 hours · Journeyman CEU: 6 hours
A Lincoln company that holds both a mechanical master contractor and a plumbing master contractor registration is managing two renewal windows six months apart, with two different CEU totals. Missing either one by 60 days revokes that credential and puts the exam back on the table. Our guide to contractor license renewal state by state covers how badly this compounds across jurisdictions.
Layer 5: EPA Section 608 is federal and applies everywhere
None of the above touches refrigerant handling. EPA Section 608 certification is a federal requirement to purchase and handle regulated refrigerants, and it applies in every Nebraska city regardless of whether that city licenses HVAC at all.
Because Nebraska has no state HVAC license, EPA 608 is the only credential many rural Nebraska technicians actually hold, which leads a lot of people to believe 608 is the HVAC license. It is not. It is a federal refrigerant handling certification and it authorizes nothing about installing equipment or pulling a permit. We take the distinction apart in EPA 608 certification vs HVAC license.
Outside Omaha and Lincoln
Nebraska's smaller jurisdictions vary. Some run their own mechanical licensing, some accept a credential from a larger city, and many license nothing and rely on permit inspection.
The NDOL contractor registration applies statewide. The city mechanical license applies only where that city says it does. There is no mechanical credential in Nebraska that travels the whole state.
This mirrors Kansas and Missouri, both of which also lack a statewide HVAC license and push mechanical credentialing to city boards. It is the opposite of Iowa, which runs a genuine statewide mechanical license with a company-level Master of Record. If you work all four states, you are managing four incompatible systems. Our guide to state vs. local contractor licensing explains how to reason about which layer controls a given job site.
The business problem: who can actually hold the company's license?
The NDOL registration is easy and confers nothing. The city mechanical license is hard and confers everything.
In Omaha and Lincoln alike, the credential that lets a mechanical contracting business operate is tied to a specific licensed individual. That individual's relationship to the company is not incidental, it is the whole point. Omaha writes it into the plumbing code in plain language, requiring the master to be a full-time employee of the one company the license covers, and applies the same structural logic across its trade licensing. We break that ordinance down in the Omaha master plumber full-time employee rule.
So a mechanical contractor that wants Omaha or Lincoln work needs an owner who holds the master credential, or an employee who does. There is no third option that survives an inspection.
That is the qualifying agent problem. It is why a qualifying agent exists as a role at all, and it is why the arrangement has to be an employment relationship rather than a fee-for-name arrangement, a distinction we examine in can a qualifying agent be a 1099 contractor.
If your mechanical company has the crews and the work but not the master credential, we place qualifiers as W-2 full-time employees. Start here, or see what a scoped engagement looks like in consultation packages.
Frequently asked questions
Does Nebraska require an HVAC license? Not at the state level. Nebraska issues no statewide HVAC or mechanical contractor license. Requirements are set by individual cities, Omaha through its ACAD board, Lincoln through Building and Safety. All contractors must separately register with the Nebraska Department of Labor, which is a registration rather than a competency license.
Then what is the "Heating/AC/Refrigeration" license I keep seeing? That is a specialty license on the Nebraska State Electrical Division's fee schedule, listed at $37.50 per year of the two-year license period. It sits inside Nebraska's electrical licensing scheme, not a mechanical one, and NSED administers it. It does not substitute for an Omaha ACAD license or a Lincoln mechanical registration. Confirm scope with NSED directly.
How much does an HVAC license cost in Nebraska? There is no single figure, because there is no single license. State contractor registration is $40 annually as of August 1, 2026. Lincoln charges $350 a year for a Mechanical Master Contractor and $25 for a Journeyman. Omaha adds an application fee, a $10,000 surety bond, and liability insurance at the published minimum. Then add exam fees, EPA 608, continuing education, and bond premium, which varies with credit and surety. The real number depends on which cities you work in and what equipment you touch. We scope it by jurisdiction, see consultation packages.
How long does it take to become a master mechanical contractor in Lincoln? Three years of practical experience to sit the journeyman exam, then one year holding a Lincoln mechanical journeyman license to sit the master contractor exam. Education substitutions can reduce the three years, an accredited four-year engineering degree counts for two of them, and a Nebraska-registered Mechanical Engineer receives all three.
Do I need an Omaha ACAD license to work in Lincoln? No. They are separate credentials from separate authorities under separate municipal codes, with different qualification standards, fees, renewal windows and CEU totals. Each city sets its own rules for applicants credentialed elsewhere, ask the receiving city's board before assuming anything.
Is EPA 608 enough to work as an HVAC contractor in Nebraska? No. EPA Section 608 is a federal refrigerant handling certification. It does not authorize you to install equipment or pull a mechanical permit anywhere. In cities with no HVAC licensing it may be the only credential you hold, which is why it gets mistaken for a license, but in Omaha or Lincoln it is one requirement among several.
Who regulates electricians in Nebraska? The Nebraska State Electrical Division, statewide. This is the reverse of mechanical and plumbing, both of which are city-controlled. Lincoln's own Building and Safety page directs all electrical licensing to NSED.
Fees, code sections and requirements cited here were verified against the Nebraska Department of Labor, the Nebraska Legislature's published statutes, the Nebraska State Electrical Division, the City of Omaha Permits and Inspections Division, and the City of Lincoln Building and Safety Department as of August 2026. All fees are set by the issuing authority and are subject to change, verify before relying on them.
See the full state licensing directory, the Nebraska contractor licensing guide, and the national HVAC contractor license overview. Mechanical contractors holding an active master license can become a qualifying agent.
Disclaimer: This article is provided for educational and informational purposes only. It does not constitute legal advice, licensing guidance, or an offer of services. Licensing requirements vary by jurisdiction. For specific compliance questions, contact The Licensing Company for a confidential consultation.