THERMA-STOR LLC is a power boiler and heat exchanger manufacturing employer in MADISON, WI. Federal records show 1 OSHA inspection with 1 violation and $800 in penalties. All data sourced from public federal enforcement records.
Data sourced from OSHA, DOL WHD, MSHA, EPA ECHO, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA, and the UVA Corporate Prosecution Registry. Last updated: May 2, 2026.
THERMA-STOR LLC
4201 LIEN ROAD, MADISON, WI, 53704
Parent: Legence Corp. (504 locations)
332410 — Top companies in Power Boiler and Heat Exchanger Manufacturing
EIN: 352609097
352 employees
Industry Benchmark
Data Insights
Inspection Breakdown
Peer Comparison
Labor Relations (NLRB)
Motor Carrier Safety (FMCSA)
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Inspection History
No inspection records found.
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Data aggregated from public federal enforcement and program records (OSHA, WHD, MSHA, EPA, NLRB, FMCSA, OFLC, BLS, SAM.gov, CMS, USAspending, CPSC, NHTSA) plus the UVA Corporate Prosecution Registry. Employer profiles matched by name and location — matching errors may occur. Risk scores computed by FastDOL, not official government assessments. OSHA citations typically appear 3-8 months after the inspection, so very recent enforcement actions may not yet be reflected. Data provided as-is. Report a data error.
Part of a larger organization
THERMA-STOR LLC is one of 504 establishments in our dataset that roll up under the parent organization Legence Corp.. Legence Corp. is a SEC public reporter (LGN), with most recent reported revenue of $2.6B.
Federal enforcement records on THERMA-STOR LLC represent activity at this specific establishment. The full enforcement footprint of Legence Corp. across all 504 of its tracked locations is viewable on the parent profile.
Other establishments operated by Legence Corp.
- THERMAL CERAMICS, INC. — AUGUSTA, GA — 3 federal records
- W.E. BOWERS, INC. — ROCKVILLE, MD — 2 federal records
- THERMAL INSULATION, INC. — THE VILLAGES, FL — 2 federal records
- THERMAL SPRAY SOLUTIONS, INC. — CHESAPEAKE, VA — 2 federal records
- Thermal Insulation — Winter Garden, FL — 2 federal records
- W.E. BOWERS, INC. — BELTSVILLE, MD — 2 federal records
- THERMAL CARE, INC. — NILES, IL — 2 federal records
- THERMAL TRANSFER CORPORATION — DUQUESNE, PA — 2 federal records
- THERMA-STOR LLC — MADISON, WI — 2 federal records
- THERMATECH NORTHWEST, INC. — EVERETT, WA — 1 federal record
Other employers in Power Boiler and Heat Exchanger Manufacturing within WI
- GENERAL THERMODYNAMICS, INC. — IRON RIDGE — 2 federal records
- CHART ENERGY & CHEMICALS, INC. — LA CROSSE — 1 federal record
- THERMASYS CORPORATION — IRON RIDGE — 1 federal record
- PAGET EQUIPMENT COMPANY — MARSHFIELD — 1 federal record
- ENERQUIP, INC. — MEDFORD — 1 federal record
- PRE-HEAT INC. — OOSTBURG — 1 federal record
- INDUSTRIAL HEAT TRANSFER, INC. — COON VALLEY — 1 federal record
- MODINE MANUFACTURING COMPANY — RACINE — 1 federal record
- ADVANCE BOILER & TANK CO., LLC — WEST ALLIS — 1 federal record
- PBBS EQUIPMENT CORPORATION — OCONOMOWOC — 1 federal record
Industry context
Within the power boiler and heat exchanger manufacturing industry in WI, THERMA-STOR LLC ranks in the 41th percentile of OSHA violation frequency across 75 comparable establishments.
OSHA penalty totals rank in the 51th percentile of the same peer group.
The Bureau of Labor Statistics reports an industry-average Total Recordable Incident Rate (TRIR) of 3.2 for the power boiler and heat exchanger manufacturing sector, with a Days Away, Restricted, or Transferred (DART) rate of 1.5. THERMA-STOR LLC's self-reported DART rate is 0.75, which is below the industry average.
Activity timeline
No federal enforcement activity has been recorded against this establishment in the past 16 years.
Frequently Asked Questions
- What is THERMA-STOR LLC's OSHA violation history?
- THERMA-STOR LLC has 1 OSHA inspection on record with 1 violation and $800 in total penalties.
- How does THERMA-STOR LLC's safety record compare to its industry?
- THERMA-STOR LLC operates in the power boiler and heat exchanger manufacturing industry. The industry average Total Recordable Incident Rate (TRIR) is 3.2. THERMA-STOR LLC's self-reported DART rate is 0.75 compared to an industry average of 1.5.
About this data
This profile aggregates federal enforcement records on THERMA-STOR LLC of MADISON, WI from 17 federal data sources. Records were found in 5 sources: OSHA workplace safety inspections, NLRB labor relations cases, FMCSA motor carrier safety, SEC XBRL companyfacts (parent financials), and BLS industry safety benchmarks. The remaining 12 sources were checked and found no matching records: WHD, MSHA, EPA, OFLC, OFCCP, USAspending, SAM.gov, CMS, CPSC, NHTSA, UVA, SEC enforcement.
Establishments are matched across agencies using normalized employer name, state, and ZIP code. The dataset was last refreshed on May 2, 2026. THERMA-STOR LLC resolves to the parent rollup Legence Corp., which operates 504 establishments in our dataset.
This profile may be incomplete if THERMA-STOR LLCoperates under multiple legal names, files under variations our entity-matching rules don't yet cover, or maintains records below current matching thresholds. To report a missing record or correction, email corrections@fastdol.com.