Thermogenics LLC
REGISTEREDPlumbing/Heating & A/C Contractors · Sioux City, IA
Homeowners found plumbing/heating & a/c contractors pages across Iowa 43 times in the last 28 days.
Thermogenics LLC is currently registered as a construction contractor with the State of Iowa under registration number C145481, first issued 2026-07-31 and current through 2029-06-30. Iowa registration confirms compliance with state labor law — it is not a license, and the State does not assess skill.
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State registration
- Registration number
- C145481
- Status
- Registered
- Issued / last renewed
- 2026-07-31
- Expires
- 2029-06-30
- Primary trade
- Plumbing/Heating & A/C Contractors
- County
- Woodbury County
- Owner of record
- Ross Garland
- Issuing authority
- DIAL
Sourced from the Active Iowa Construction Contractor Registrations (Iowa Code ch. 91C), last updated 2026-09-14. Verify this registration with the State of Iowa. How to check a registration yourself.
About Thermogenics LLC
From plainsboiler.com

Plains Mechanical Services is a full-service boiler company providing sales, service installation, and repair of boilers, pressure vessels, piping systems, and industrial combustion applications. With over three decades of experience since our founding in 1994, we specialize in full-service boiler, burner, and boiler room installation, maintenance, and repair services for all steam and hydronic systems, fuel and process piping installations, and industrial combustion applications. We are the only one-stop-shop for boiler room equipment sales, service, and rentals in the area.
- Emergency service
- Website:
- plainsboiler.com
- LinkedIn:
- linkedin.com/company/plains-mechanical-services
Read from the business’s own website (plainsboiler.com). We have not verified it and this business has not claimed this listing. Is this your business? Claim it free to edit or remove anything here, or request a correction.
What Thermogenics LLC is registered to do
The State classifies Thermogenics LLC as plumbing/heating & a/c contractors. That classification comes from the registration itself, not from us — it describes the work the business registered to perform, and it is not an assessment of skill or a limit on what they may quote for.
Since this year
on the State's register (since 2026) — not a measure of experience
1,309
registered plumbing/heating & a/c contractors in Iowa, this business among them
28
registered plumbing/heating & a/c contractors in Sioux City
plumbing, HVAC & mechanical work is separately licensed in Iowa. The registration above is a compliance filing; the Iowa Plumbing & Mechanical Systems Board ↗ runs the exam that actually tests competence. Ask for the license number and check it there — for this trade it is the strongest signal available.
All 1,309 registered plumbing/heating & a/c contractors in Iowa →plumbing/heating & a/c contractors in Sioux City →Contractors in Woodbury County →
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