HVAC contractor license Iowa
Iowa licenses HVAC contractors through DIAL’s Plumbing & Mechanical Systems Board. You must designate a Master of Record, carry $500,000 liability insurance, post a $5,000 bond, and complete DIAL contractor registration. In July–December 2026, new applications cost $400 total, with half‑year prorations thereafter.
Direct answer (49 words): To get a HVAC contractor license in Iowa, apply to the Plumbing & Mechanical Systems Board, designate a licensed Master of Record, provide $500,000 liability insurance and a $5,000 license & permit bond, and complete DIAL contractor registration (workers’ comp, UI number). New 2026 contractor + registration fees total $400.
Requirements last verified: 2026-10-13
| Requirement | Details |
|---|---|
| Licensing agency | Iowa Department of Inspections, Appeals, & Licensing (DIAL) – Plumbing & Mechanical Systems Board (PMSB). See PMSB overview and contractor page. PMSB Board; Contractor License. |
| Fees (new applications in 2026, Year 1: Jul 1–Dec 31) | $250 contractor license + $150 contractor registration = $400. Proration schedule and 3‑year cycle (2026‑07‑01 to 2029‑06‑30) shown by DIAL. Reviews can take up to 6 weeks. Licensing Period & Fees. |
| Experience | No experience is required for the contractor license itself, but you must employ or be a licensed Master of Record in each discipline (e.g., mechanical/HVAC-Refrigeration). Master eligibility requires passing the board exam and typically two years as a journeyperson (or a master license from another jurisdiction). Contractor License; Master License. |
| Exam | No contractor-level exam. The Master of Record must pass the PMSB master exam (testing administered through Kirkwood) before being listed. Master License. |
| Minimum age | At least 18 years old. Contractor License. |
| Insurance | Public liability insurance minimum $500,000; certificate must list PMSB as certificate holder and include 10‑day cancellation notice. Contractor License; Iowa Code §105.19. Iowa Code ch. 105. |
| Bond | $5,000 PMSB license & permit bond (Iowa-authorized surety). PMSB Contractor Renewal Instructions. For out‑of‑state contractors, a separate $25,000 contractor registration bond or DOT prequalification is required under Iowa Code 91C.7. Contractor Registration; DOT reference to 91C.7. |
| Contractor registration (separate from PMSB license) | Required for construction contractors; includes $150 fee (prorated in certain periods), UI account number, and workers’ compensation compliance; out‑of‑state bond as above. Register as a Contractor; Contractor Registration; Iowa Code §91C.2. §91C.2. |
| Renewal | 3‑year PMSB cycle (licenses expire 6/30; valid through 8/31); on‑time renewal contractor license fee $250 (plus $150 contractor registration). Late-fee and proration rules apply. Licensing Period & Fees. |
| Display & preemption | Display contractor license as required; state law preempts local trade licensing. Iowa Code §§105.14, 105.17. Iowa Code ch. 105. |
How to get a HVAC contractor license in Iowa
- Confirm your qualifying individual. Ensure you or an employee holds an active PMSB Master license in the HVAC‑Refrigeration or Mechanical discipline to serve as Master of Record. Master License.
- Set up insurance and bond. Obtain public liability insurance of at least $500,000 and a $5,000 PMSB license & permit bond; have certificates issued by Iowa‑authorized carriers to PMSB’s address with required notices. Contractor License; Renewal Instructions (bond).
- Gather business and compliance details. Prepare evidence of a permanent place of business, criminal conviction disclosures (if any), UI account number, and workers’ compensation compliance; out‑of‑state firms prepare the $25,000 91C bond or DOT prequalification. Contractor License; Register as a Contractor.
- Apply online for PMSB contractor license + registration. Use DIAL’s portal to submit a joint application, listing your Master of Record and uploading insurance/bond proof. First‑year total fee (Jul–Dec 2026) is $400. Reviews can take up to six weeks. Licensing Period & Fees.
- Receive numbers and display them. PMSB issues your contractor license; DIAL issues your contractor registration number—display as required on documents and vehicles. Iowa Code §§105.12–105.15; §105.14 (display). Iowa Code ch. 105.
- Pull permits and follow inspections. State licensure preempts local licensing, but you must obtain local permits and pass inspections for each job. Iowa Code §105.17. Iowa Code ch. 105.
- Renew on time. PMSB licenses follow a 3‑year cycle (current: 2026‑07‑01 to 2029‑06‑30). Renew by June 30 of Year 3; on‑time contractor renewal is $250 plus $150 registration. Licensing Period & Fees.
Iowa HVAC contractor license: who needs it and what it covers
If your business provides plumbing, mechanical, HVAC, refrigeration, sheet metal, or hydronic services in Iowa, you must hold a PMSB contractor license and maintain DIAL contractor registration. State law also requires a Master of Record to be in active charge of your trade work. Contractor Registration; Contractor License; Iowa Code ch. 105.
Do Iowa cities require an HVAC contractor license too?
No. Iowa preempts city/county trade licensing for covered disciplines; however, local permits and inspections still apply to each project. Iowa Code §105.17.
Current Iowa HVAC contractor license fees (2026)
In the first half of the current 3‑year period (Jul 1–Dec 31, 2026), a new application totals $400 ($250 contractor license + $150 registration). Proration changes each half‑year; see the fee table for later dates within 2026–2029. Licensing Period & Fees.
For planning your budget in more depth, see our cost explainer with real‑world add‑ons like bonds and insurance in HVAC Contractor License Cost in Iowa.
Insurance, bonding, and contractor registration—what Iowa requires
PMSB requires at least $500,000 in public liability coverage and a $5,000 license & permit bond for the contractor license. Separately, DIAL contractor registration requires workers’ compensation compliance, a UI account number, and, for out‑of‑state contractors, a $25,000 bond or DOT prequalification. Contractor License; Register as a Contractor; DOT 1107 (91C.7).
Master of Record: the key to qualifying your HVAC business
Your Master of Record must hold an active PMSB master license in the applicable discipline(s). To earn a master license, candidates must pass the state exam; exam eligibility requires either a master license in another jurisdiction or a journeyperson license with two years of experience. Master License.
Processing times, renewal cycle, and compliance tips
PMSB notes application reviews can take up to six weeks. Licenses run on a 3‑year cycle (2026‑07‑01 to 2029‑06‑30), expiring June 30 and valid through August 31; renew early to avoid late fees. Display your license as required by statute. Licensing Period & Fees; Iowa Code §§105.14, 105.20.
If you’re researching other professional credentials in Iowa, compare security‑sensitive requirements using our guide to the Iowa Private Investigator License.
Frequently Asked Questions
Do I need to pass an exam to get a HVAC contractor license in Iowa?
No exam is required for the contractor license itself. However, you must designate a Master of Record, and that master must pass the PMSB master‑level exam (administered via Kirkwood) before being listed for your business. Contractor License; Master License.
How much does an Iowa HVAC contractor license cost in 2026?
For new applicants between July 1 and December 31, 2026, the total is $400 ($250 contractor license + $150 contractor registration). Fees are prorated by half‑year across the 3‑year period. Licensing Period & Fees.
What insurance and bonds are required?
PMSB requires at least $500,000 public liability insurance and a $5,000 license & permit bond. Contractor registration also requires workers’ compensation compliance and, for out‑of‑state contractors, a separate $25,000 bond (or DOT prequalification). Contractor License; Register as a Contractor; DOT 1107 (91C.7).
How long does it take to get licensed?
PMSB indicates application reviews can take up to six weeks. Timelines depend on how quickly you submit complete insurance/bond documentation and confirm your Master of Record. Licensing Period & Fees; Contractor License.
Do I still need local licenses in Iowa cities?
No. Iowa law preempts local licensing for covered trades, but you must still obtain local building/mechanical permits and pass inspections for each job. Iowa Code §105.17.
What are the display and renewal rules?
Your contractor license must be displayed as required by statute. PMSB licenses follow a 3‑year period (now 2026‑07‑01 to 2029‑06‑30), with renewals due by June 30 and valid through August 31. Late‑fee rules apply after August 1. Iowa Code §§105.14, 105.20; Licensing Period & Fees.
Ready to move forward? License Navigator can help you organize proofs, track deadlines, and file your Iowa HVAC contractor application without surprises—so you can focus on jobs, not forms.
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