Active
Overview
- Legal name
- MIDWESTERN MECHANICAL, INC
- Registered location
- SIOUX FALLS, SD, USA
- Website
- Company website ↗
- Primary NAICS
- 238220 — Plumbing, Heating, and Air-Conditioning Contractors
- Latest award activity
- Aug 3, 2026
Read company summary
MIDWESTERN MECHANICAL, INC is associated with UEI X4A5HLMLHMM9 and CAGE 5SRW6 in public federal records. AcornBids currently links 2 prime awards totaling $149.1K in obligations to this entity. Its largest recorded federal customer by obligations is Department of Agriculture. Its recorded federal awards include work classified as Plumbing, Heating, and Air-Conditioning Contractors. These categories describe the loaded award records, not a complete list of company capabilities. Its primary SAM.gov NAICS is 238220 (Plumbing, Heating, and Air-Conditioning Contractors). Its public SAM.gov registration lists SIOUX FALLS, SD, USA.
At a glance
Lifetime prime obligations$149.1K
Prime awards2
Awards with future end dates1
Top-agency concentration89.4%
Prime contract obligations across loaded award records. Obligations are not revenue or contract ceilings. Summary updated Sep 28, 2026. Refresh pending; these totals may be out of date.
Business information
Public SAM.gov registration details.
- Legal name
- MIDWESTERN MECHANICAL, INC
- UEI
- X4A5HLMLHMM9
- CAGE
- 5SRW6
- Registered address
- 4105 N LEWIS AVE, SIOUX FALLS, SD, 57104, USA
- Registration status
- Active
- Primary NAICS
- 238220 — Plumbing, Heating, and Air-Conditioning Contractors
- SAM activation
- Jul 17, 2026
- Initial registration
- Nov 9, 2009
- Entity start
- Nov 15, 1984
- SAM updated
- Jul 17, 2026
- Registration expires
- Jul 15, 2027
- Fiscal year end
- Dec 31
- Place of incorporation
- IA, USA
Federal award analysis
Net transaction obligations by federal fiscal period.
Transaction history is not available in the loaded data. Annual funding is not estimated from current award totals.
Recent federal awards
Prime contract awards. Select an award to review its history and source evidence.
| Award / description | Awarding agency | Obligations | Start date | End date |
|---|---|---|---|---|
| 140A2326P0270REPLACE TACO END HEATING PUMP BLDG121 | Department of the Interior | $15.8K | Aug 3, 2026 | Dec 31, 2026 |
| 12441926P0007MORATORIUM EXCEPTION: EMERGENCY - IMMINENT THREAT TO HEALTH, PROPERTY - BOXELDER KITCHEN/DINING HVAC MODIFICATIONS - REPLACE FAILED HVAC COMPONENTS. KITCHEN AND DINING HALL… | Department of Agriculture | $133.4K | Dec 15, 2025 | Apr 30, 2026 |
Upcoming positioning windows
Modeled recompete windows are estimates, not announced solicitations or guarantees.
Registration, certifications & contacts
| Registration evidence | Date |
|---|---|
| SAM updated | Jul 17, 2026 |
| Source loaded | Sep 26, 2026 |
| Initial registration | Nov 9, 2009 |
| Entity start | Nov 15, 1984 |
| Industry | Reported size status |
|---|---|
| 238220 — Plumbing, Heating, and Air-Conditioning Contractors | Not reported |
| Contact | Role | Published contact methods | Evidence | Source date |
|---|---|---|---|---|
| DAVID OLSEN | Government business | Contact method not published | SAM registration | Not available |
| DAVID OLSEN | Alternate government business | Contact method not published | SAM registration | Not available |
| DAVID OLSEN | Electronic business | Contact method not published | SAM registration | Not available |
| DAVID OLSEN | Alternate electronic business | Contact method not published | SAM registration | Not available |
Registered industries
- 238220 — Plumbing, Heating, and Air-Conditioning Contractors
Registration classifications and published certificates do not by themselves establish eligibility for a particular solicitation. View SAM source
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Data coverage and methodology
Sources: SAM.gov registration, USAspending awards and transactions, and linked supporting records. Prime contract obligations, IDV ceilings and assistance amounts are kept separate. Missing records are not zero activity. Company claims are labeled separately. Recompete signals are rule-based scores out of 100. Positioning windows are AcornBids estimates.
No official subaward rows are loaded, so Acorn does not claim known teaming relationships.
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