Iowa HVAC License Requirements

Official classification: HVAC-Refrigeration with Gas License · Issued by the Iowa Department of Inspections, Appeals, & Licensing (Plumbing and Mechanical Systems Board).

❄️ HVACIA ✔ Verified 2026-06-26

In Iowa, HVAC contractors must hold the HVAC-Refrigeration with Gas License, issued by the Iowa Department of Inspections, Appeals, & Licensing (Plumbing and Mechanical Systems Board), and a $5,000 surety bond is required. Full requirements — experience, exams, fees, insurance, renewal and reciprocity — are detailed below.

How to become a licensed HVAC contractor in Iowa

Follow these steps to earn your HVAC-Refrigeration with Gas License. Every figure is verified against the Iowa Department of Inspections, Appeals, & Licensing (Plumbing and Mechanical Systems Board); full detail for each step is further down the page.

Build the required experience. Journeyperson: Minimum 4 years (42 months) of practical experience in a Department of Labor-registered apprenticeship program. Master: Possession of a master license from another jurisdiction OR a valid Iowa journeyperson license with 2 or more years of work experience in the HVAC-refrigeration trade.
Pass the HVAC-Refrigeration with Gas Journey Examination and HVAC-Refrigeration with Gas Master Examination exams. Providers, passing scores and fees are in the Exams section below.
Secure your surety bond. Iowa requires $5,000 surety bond required (must be issued by an entity licensed to do business in Iowa; surety must provide 10 days written notice to the board before cancellation).
Line up insurance. You'll need liability insurance ($500,000 general liability insurance minimum (issued by entity licensed to do business in Iowa)), and workers' compensation coverage.
Clear the background check. Criminal history background check required. No record of felony conviction relating to the profession. Board review required for any applicants with felony convictions to determine eligibility.
Submit your application and fees. Apply through the Iowa Department of Inspections, Appeals, & Licensing (Plumbing and Mechanical Systems Board) — $35 examination application fee (paid to the state, per IAC 481-428.1) application fee, plus a $180 (journeyperson) / $240 (master) for the 3-year term license fee. Processing time: Approximately 4 to 6 weeks to process licenses.
Keep the license active. Renew every 3 years, completing 8 hours of classroom instruction per 3-year licensing term.

License types

Journeyperson — Install, repair, and maintain HVAC-refrigeration systems under direct supervision or independently as a journeyperson-level technician
Master — Design, plan, superintend, and manage HVAC-refrigeration installations, repairs, and maintenance; supervise journeyperson and apprentice work

Requirements at a glance

Experience required	Journeyperson: Minimum 4 years (42 months) of practical experience in a Department of Labor-registered apprenticeship program. Master: Possession of a master license from another jurisdiction OR a valid Iowa journeyperson license with 2 or more years of work experience in the HVAC-refrigeration trade.
Application fee	$35 examination application fee (paid to the state, per IAC 481-428.1)
License fee	$180 (journeyperson) / $240 (master) for the 3-year term
Renewal fee	$180 (journeyperson) / $240 (master) per 3-year cycle
Renewal period	Every 3 years
Continuing education	8 hours of classroom instruction per 3-year licensing term
Bond required	$5,000 surety bond required (must be issued by an entity licensed to do business in Iowa; surety must provide 10 days written notice to the board before cancellation)
Liability insurance	$500,000 general liability insurance minimum (issued by entity licensed to do business in Iowa)
Property damage	—
Workers' comp	Workers compensation insurance required for applicants with employees
Background check	Criminal history background check required. No record of felony conviction relating to the profession. Board review required for any applicants with felony convictions to determine eligibility.
Credit requirement	None
Reciprocity	None
Processing time	Approximately 4 to 6 weeks to process licenses

Exams

HVAC-Refrigeration with Gas Journey Examination	Provider: Board-approved testing vendor · Passing: 75% · Fee: $35 board exam-application fee; vendor testing fee paid directly to the vendor
HVAC-Refrigeration with Gas Master Examination	Provider: Board-approved testing vendor · Passing: 75% · Fee: $35 board exam-application fee; vendor testing fee paid directly to the vendor

Preparing for the HVAC exam? State-specific contractor exam-prep courses help you pass the first time. Start exam prep →

Local / municipal notes

Licensing is statewide under Iowa Department of Inspections, Appeals, & Licensing. Local jurisdictions may have additional permit and inspection requirements. Exam approval applications must be submitted before sitting for the examination. Open-book format for both journey and master exams. Paper applications incur an additional $25 fee (online submission available to avoid this fee).

Frequently asked questions

How much does a Iowa hvac license cost?

Application: $35 examination application fee (paid to the state, per IAC 481-428.1). License: $180 (journeyperson) / $240 (master) for the 3-year term. Renewal: $180 (journeyperson) / $240 (master) per 3-year cycle.

Do hvacs in Iowa need a surety bond?

$5,000 surety bond required (must be issued by an entity licensed to do business in Iowa; surety must provide 10 days written notice to the board before cancellation)

What experience is required for a Iowa hvac license?

Journeyperson: Minimum 4 years (42 months) of practical experience in a Department of Labor-registered apprenticeship program. Master: Possession of a master license from another jurisdiction OR a valid Iowa journeyperson license with 2 or more years of work experience in the HVAC-refrigeration trade.

Is insurance required for hvacs in Iowa?

Liability: $500,000 general liability insurance minimum (issued by entity licensed to do business in Iowa) Workers' compensation: Workers compensation insurance required for applicants with employees

How often must a Iowa hvac license be renewed?

Every 3 years. Continuing education: 8 hours of classroom instruction per 3-year licensing term

Fees and rules change frequently (often annually). This page was last verified on 2026-06-26 — always confirm current requirements directly with the Iowa Department of Inspections, Appeals, & Licensing (Plumbing and Mechanical Systems Board) before applying. This is not legal advice.