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Plumbing/Heating & A/C Contractors in Iowa

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, plumbing, hvac, furnace, boiler, ac, a/c, air conditioning.

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

As of September 2026, 1,309 plumbing/heating & a/c contractors hold a construction contractor registration with the State of Iowa, of which 1,309 are currently in Registered status. They operate out of 474 cities across 98 Iowa counties. This is the complete State registry for the trade — not a paid or curated selection.

Registered
1,309
in this trade
Iowa-based
85%
190 from out of state
Counties covered
98
of 99 in Iowa
New in 12 months
1,304
median 0.1 yrs registered

The largest concentrations are Des Moines (67), Cedar Rapids (40), Omaha (33), Sioux City (28) and Ames (27). A further 190 are based outside Iowa but hold a current Iowa registration, which Iowa Code ch. 91C requires before they may work in the state.

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Planning plumbing/heating & a/c contractors work in Iowa

How to Find the Best HVAC Contractor in Iowa (2026 Guide)

Find a licensed HVAC contractor in Iowa for furnace, AC, and heat pump work. What to check, what licensing means, and how to compare bids.

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Sump Pump Replacement Cost in Iowa (2026 Guide)

What does sump pump replacement cost in Iowa? Learn when to replace before spring melt, cost drivers, and how to find a registered contractor.

Costs · 7 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 1,309

Premium — pays for placement, shown firstVerified — 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/heating & a/c contractors in Iowa

Iowa does not rate or rank contractors, and neither do we — the 1,309 registered plumbing/heating & a/c contractors listed on this page (current as of September 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, not an ad. Every business above holds a current State registration — a legitimacy baseline the incumbents’ pay-to-play lists cannot promise. 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.

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/heating & a/c contractors in Iowa?

Iowa does not rate or rank contractors, so there is no official "best registered plumbing/heating & a/c contractors" list — any site claiming one is guessing. Instead, this directory shows the complete field: all 1,309 registered plumbing/heating & a/c contractors the State lists in Iowa, unranked, so you can compare them yourself. To find the best one for your project, confirm each contractor's registration is active, ask for current proof of liability insurance and workers' compensation (and, for a licensed trade, a current State trade license), and get at least three written itemized bids before you hire.

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

As of September 2026, the State of Iowa lists 1,309 registered plumbing/heating & a/c contractors in Iowa. This directory shows all of them — it is the complete public registry, with no paid placement affecting who is listed.

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 September 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 ↗