How Do You Get an HVAC License in Iowa?

Yes.

Iowa requires a board license to install or repair HVAC work, and the requirement is statewide: the licensing statute says a person shall not operate as a contractor or install or repair plumbing, mechanical, HVAC, refrigeration, sheet metal or hydronic systems without a license issued by the Plumbing and Mechanical Systems Board, which now sits within the Iowa Department of Inspections, Appeals, and Licensing (DIAL).

State licensing also preempts local licensing — city and county plumbing and mechanical licenses became void on July 1, 2009, though cities may still charge permit and inspection fees.

Separate from the state license, federal law covers refrigerant handling: under 40 CFR 82.161, the EPA's Section 608 rule, any person who could reasonably be expected to violate the integrity of a refrigerant circuit while maintaining, servicing, repairing or disposing of appliances containing CFC/HCFC or non-exempt substitute refrigerants must pass an exam from an EPA-approved technician certification program.

The board licenses by discipline.

For HVAC work the two relevant disciplines are HVAC-refrigeration and mechanical, and a mechanical license covers HVAC, refrigeration, sheet metal and hydronic work; master licenses exist in plumbing, mechanical, HVAC-refrigeration and hydronic, while the journeyperson list adds sheet metal — there is no separate sheet metal master license.

Above master sits the contractor license, the business license from the same board: it requires a permanent place of business, workers' compensation and unemployment insurance compliance, a master license held or employed, and public liability insurance and a surety bond in amounts the board sets by rule.

Any business doing plumbing or mechanical work must at all times have a licensed master actively in charge of the work, and a sole proprietor must personally be a licensed master.

Iowa also issues special restricted licenses — a service technician HVAC specialty license limited to work from the appliance shutoff valve to the appliance, and a hearth systems specialty license — as sublicenses under an HVAC-refrigeration or mechanical license.

Journeyperson or master mechanical and HVAC-refrigeration licensees do not need a special electrician license to disconnect and reconnect existing air conditioning and refrigeration systems.

The apprentice license requires working under a licensed journeyperson or master in the discipline and enrollment in a registered apprenticeship program, and applicants must be 18 and hold a high school diploma or GED.

The journeyperson license requires the state journeyperson exam and at least four years of practical experience as an apprentice in a registered apprenticeship program, a requirement since January 1, 2010; applicants may test up to 12 months before finishing the 48 months.

The master license requires the master exam and at least two years of experience as a licensed journeyperson in the discipline, or a prior master license.

Three-year license fees are $50 apprentice, $180 journeyperson, $240 master and $250 contractor, and the exam application fee is $35, with exam fees paid separately to the board's testing vendor.

The worker ladder's exams are the journeyperson exam and the master exam.

Iowa's rules say the exams are administered by the board-approved vendor, and the vendor's name does not appear in the rules our research read, so ask the board which testing vendor it currently uses.

The exam application costs $35, and the exam fee itself is paid separately to that vendor.

Journeyperson applicants may sit the exam up to 12 months before finishing the 48 months of apprentice experience.

Our research also does not describe what the exams cover, so ask the board for the candidate information when it approves your exam application.

Every license the board issues runs on a three-year term, and all licenses expire on June 30 every three years, beginning with June 30, 2026 — apprentice, journeyperson, master and contractor licenses renew together on the same date.

Each three-year term requires at least 8 classroom hours of board-approved continuing education, and Iowa law gives a 30-day grace period after expiration.

The three-year license fees are $50 for an apprentice license, $180 for a journeyperson license, $240 for a master license and $250 for a contractor license.

Conditionally.

The board may license without examination a nonresident applicant who is licensed under another state's plumbing, mechanical, HVAC-refrigeration, sheet metal or hydronic licensing statutes, when those requirements are similar to Iowa's and the other state grants Iowa licensees the same privilege.

Iowa names no partner states in the material our research read, and the statute's 'may' leaves the decision with the board, so confirm with the board how your out-of-state license, experience and exams translate before you count on a waiver.

The board sits within DIAL, and our research notes a DIAL licensing search for state licenses, but we could not capture the search's web address or confirm what it covers.

Start from the Iowa Department of Inspections, Appeals, and Licensing (DIAL), which houses the Plumbing and Mechanical Systems Board, and look for its licensing search from there.

Verify a license before you hire a contractor, and before you take a job with a company that claims licensed status.