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Plumbing & HVAC Contractors in Iowa

1,509 public registry records for Iowa, across 506 recorded cities.

Source observed 2026-11-02: Iowa Department of Inspections, Appeals, and Licensing. Registration is not a quality rating. A recorded location does not establish a service area.

State registry category: Plumbing/Heating & A/C Contractors.

Plumbing, heating, and air-conditioning contractors in Iowa install and service water supply, drainage, furnaces, boilers, and cooling systems. Like electrical work, these trades are genuinely licensed in Iowa: the Iowa Plumbing and Mechanical Systems Board tests and licenses plumbers, HVAC, and mechanical contractors separately from the State construction registration.

Also searched as: plumber, plumer, plummer, plumbing, hvac, furnace, boiler, heating.

How many plumbing/heating & a/c contractors are registered in Iowa?

As of November 2026, 1,509 plumbing/heating & a/c contractors hold a construction contractor registration with the State of Iowa, of which 1,509 are currently in Registered status. They operate out of 506 cities across 98 Iowa counties. This is the complete State registry for the trade, not a curated selection.

Registered
1,509
in this trade
Iowa-based
85%
220 from out of state
Counties covered
98
of 99 in Iowa
Renewing in 90 days
0
registrations due to expire

The largest concentrations are Des Moines (80), Cedar Rapids (43), Omaha (38), Sioux City (32) and Davenport (29). A further 220 are based outside Iowa but hold a current Iowa registration, which Iowa Code ch. 91C requires before they may work in the state.

Free quotes from plumbing & hvac contractors in Iowa

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Guides for hiring plumbing & hvac contractors in Iowa

Furnace and HVAC Replacement Cost in Iowa (2026)

See realistic furnace and HVAC replacement cost ranges in Iowa, what drives the price, efficiency ratings, and how to hire a registered HVAC contractor.

Costs · 6 min read

Preventing Frozen Pipes in an Iowa Winter

How to prevent frozen pipes in an Iowa winter: which pipes freeze, simple prevention steps, what to do if one freezes, and when to call a plumber.

Seasonal · 6 min read

How to Find the Best Plumber in Iowa for Your Project

Need a licensed plumber in Iowa? Learn how to compare state-registered professionals, verify licenses, and hire the right pro for your job.

Hiring · 6 min read

What to know before hiring plumbing/heating & a/c contractors in Iowa

The license is the real credential

Plumbing and mechanical work is licensed by a board with an actual exam. When comparing bids, ask for the license number and confirm it with the board directly. This is the single strongest quality signal available in any Iowa construction trade, most trades have no equivalent.

Iowa’s heating season is unforgiving

A furnace failure in an Iowa January is an emergency, and emergency work costs more and offers no time to compare bids. Systems replaced on a planned timeline in spring or early autumn are quoted in a fundamentally different market than the same system replaced in a cold snap.

Frozen and burst supply lines

Sustained subzero stretches routinely burst pipes in uninsulated crawlspaces, exterior walls, and unheated outbuildings. If a plumber is repairing a freeze break, ask what change would stop it recurring, insulation, rerouting, or a shutoff, rather than only repairing the failed section.

By city

First 100 of 1,509

29 of 100 listings publish services; 58 publish hours. These are published details, not availability guarantees.

Premiere members appear first, marked with the gold check.

Premiere members appear first, marked with the gold check.Verified: owner confirmed their details with the StateEvery registered contractor is listed either way, a badge moves a listing up, it never removes anyone, and neither is a judgement of anyone’s work.

Pick a city above to see the rest.

How to choose the best plumbing & hvac contractors in Iowa

Iowa does not rate or rank contractors, and neither do we. The 1,509 registered plumbing & hvac contractors listed on this page (current as of November 2026) are the complete State registry for Iowa, shown without any quality ranking. “Best” is not a list you can look up; it is the contractor who is right for your job. Here is the method the pros’ own trade associations recommend for finding them:

  1. 1. Start from the complete list. Every business above holds a current State registration, and nobody pays to be included. Premiere members appear first, marked with the gold check. That is placement, not a rating. Shortlist three or four whose location and trade fit your project.
  2. 2. Confirm the registration is active. Check each one on the Iowa Department of Inspections, Appeals, and Licensing’s official portal (verify a registration ↗). Every profile here links to the State’s own record so you can check it in one click.
  3. 3. Verify the plumbing, HVAC & mechanical license. Registration is not a skills license, but plumbing, HVAC & mechanical work in Iowa is separately licensed by the Iowa Plumbing & Mechanical Systems Board ↗, which tests competence. Ask for the license number and confirm it there. This is the single strongest quality signal available for this trade.
  4. 4. Get current proof of insurance. Ask for a certificate of general liability and workers’ compensation. Never let uninsured work start on your property.
  5. 5. Get at least three written, itemized bids. Compare the same scope apples-to-apples. Be wary of a bid far below the rest. It usually hides missing scope or “surprise” costs later.
  6. 6. Check references and recent local work, then put the full scope, price, milestone payment schedule, and warranty in a written contract before anyone starts. Never pay the full amount up front.

The full guide: finding the best contractor in Iowa →Questions to ask before you hire →How to verify a registration →

Frequently asked questions

Are plumbers and HVAC contractors licensed in Iowa?

Yes. Plumbing, HVAC, and mechanical work are licensed in Iowa by the Iowa Plumbing and Mechanical Systems Board, which tests competence before issuing a license. This is separate from the State construction contractor registration under ch. 91C, and it is a substantially stronger signal because a genuine exam sits behind it.

How do I verify an Iowa plumbing or HVAC license?

Ask the contractor for the license number and confirm it directly with the Iowa Plumbing and Mechanical Systems Board rather than relying on a logo or a claim on a truck or website. Separately, confirm the State construction contractor registration is active and ask for current proof of liability and workers’ compensation insurance.

Who are the best registered plumbing & hvac contractors in Iowa?

Iowa does not rate or rank contractors, so there is no official "best registered plumbing & hvac contractors" list. This directory shows all 1,509 registered plumbing & hvac contractors the State lists in Iowa. Premiere members appear first, marked with the gold check. Owner-verified listings follow, then listings with published business details, then everyone else, alphabetical within each group. Nobody is ranked by quality. To choose one for your project, confirm the registration is active, ask for current proof of liability insurance and workers' compensation (and, for a licensed trade, a current State trade license), and compare written itemized bids. Registration and advertising placement do not establish quality.

How many registered plumbing & hvac contractors are there in Iowa?

As of November 2026, the State of Iowa lists 1,509 registered plumbing & hvac contractors in Iowa. This directory shows all of them. It is the complete public registry, and nobody can pay to be added or left out.

Is a registered contractor the same as a licensed contractor?

No. Iowa requires most construction contractors to register with the State (Iowa Code ch. 91C), but registration is not a license, an endorsement, or a guarantee of quality, insurance, or bonding. It confirms only that the business filed a current registration with the State.

How do I verify a contractor's Iowa registration?

Look up the registration number on the Iowa Department of Inspections, Appeals, and Licensing's official portal (https://laborportal.iwd.iowa.gov/iwd_portal/). Every profile in this directory links to the State's own record so you can confirm it independently. See the step-by-step guide at https://contractiowa.com/verify.

Are these contractors insured or bonded?

Registration does not verify insurance or bonding. Always ask a contractor for current proof of liability insurance and workers' compensation, and get at least three written bids, before you hire.

Where does this data come from and how current is it?

It comes directly from the Iowa Department of Inspections, Appeals, and Licensing's public "Active Iowa Construction Contractor Registrations" record, last exported November 2026. You can download the full list as a CSV, or read how this directory is built.

↓ Download this list (CSV)Data, sources & method →Verify a registration with the State ↗

Cite this dataset: Iowa's Best Contractors (contractiowa.com), Iowa registered construction contractors, compiled from the State of Iowa contractor registration record (Iowa Code ch. 91C), exported November 2, 2026.