Mark Zimmer
Grant, MI Doing business as Mark Of The Z Heating
- UEI
- DHVTENFD52D3
- CAGE
- 1GM97
- SAM.gov registration
- Active through
Company facts
- FY2025 rankings
- Self-certified in SAM.gov
- Entity structure
- Corporate Entity (Not Tax Exempt)
- Other NAICS codes in SAM.gov
- SAM.gov registration date
- Physical address
- 953 E 136th St, Grant, MI 49327, USA
- Website
- mofzhvac.com
- Industry
-
- Industrials
- Capital Goods
- Construction & Engineering
- SIC code
- 76 Miscellaneous Repair Services
Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated .
Contract obligations by fiscal year
| Fiscal year | Obligated |
|---|---|
| FY2027 To date | $0 |
| FY2026 | $44,888 |
| FY2025 | $391,435 |
| FY2024 | $188,212 |
Top agencies by obligations
| Rank | Agency | Obligated, FY2026–FY2027 | Share |
|---|---|---|---|
| 1 | Department of Homeland Security | $44,888 |
Contract awards
Latest 5 listed here. See the rest on GovTribe.
Similar vendors
| Vendor | Location | Primary NAICS |
|---|---|---|
| Hurst Mechanical Inc. | Plainfield charter Township, MI | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| Bradley-Sciocchetti, Inc. | Pennsauken Township, NJ | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| Associated Boiler Line Equipment Co., Inc. | Milford, CT | 333414 Heating Equipment (except Warm Air Furnaces) Manufacturing |
| Colonie Mechanical Contractors, Inc. | Albany, NY | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
| Bay City Boiler And Engineering Company, Incorporated | Hayward, CA | 238220 Plumbing, Heating, and Air-Conditioning Contractors |
About the company
Mark Zimmer, doing business as Mark Of The Z Heating, a small business based in Grant, Michigan, is a heating and HVAC equipment contractor that operates exclusively as a federal prime contractor under total small business set-asides. The vendor is a for-profit corporate entity with no stated minority ownership designations, SBA certifications, or other set-aside categories beyond small business.
The vendor's concrete capability footprint centers on boiler replacement, HVAC system design and installation, heating infrastructure maintenance and repair, and water heating system upgrades at federal facilities. Representative recent work includes a $388,444 definitive contract awarded by Air Combat Command on May 18, 2026, for design, demolition, and installation of HVAC equipment at Building 1510 in Oswego, South Carolina; a $192,588 Coast Guard purchase order awarded September 15, 2025, for hot water boiler removal and replacement at USCG Base Elizabeth City, North Carolina (subsequently extended thirty calendar days at no additional cost, with completion extended to December 31, 2026); and a $138,462 contract from the Saint Lawrence Seaway Development Corporation awarded June 20, 2024, to remove and replace a boiler on the GLS Buoy Barge in Massena, New York. A $44,888 purchase order from the U.S. Coast Guard awarded September 21, 2026, covers servicing two AO Smith condensing boilers, replacing two Slant-Finn modular boilers, and rebuilding three Armstrong pumps at USCG Air Station Atlantic City.
Customer concentration is split between the U.S. Coast Guard and the Air Force. The Coast Guard placed six awards worth $355 thousand in combined potential value, while Air Combat Command placed two awards worth $447 thousand. The Department of Transportation (both Maritime Administration and Saint Lawrence Seaway Development Corporation), the U.S. Geological Survey, and the National Park Service round out the active customer base, collectively accounting for the remaining funding. The vendor competes across both set-aside (ten of twelve awards carry total small business set-asides) and full-and-open (two awards carry no set-aside) categories, though set-aside work dominates the portfolio.
Activity spans twelve total awards from May 2024 to September 2026. Growth accelerated from three awards in 2024 to seven in 2025, with two awards placed in 2026 year to date. Two awards with combined potential value of $237 thousand face ultimate completion within the next twenty-four months and are therefore subject to recompete. The vendor has not subcontracted to other primes on any documented federal work; all twelve awards reflect prime contractor performance. NAICS framing splits between plumbing, heating, and air-conditioning contractors (six awards) and heating and air-conditioning equipment manufacturing (four awards across multiple specialized categories).
Quick answers
Is Mark Zimmer registered in SAM.gov?
Yes. Mark Zimmer's SAM.gov registration is active through April 13, 2027.
How much has Mark Zimmer received in federal contracts?
Federal contracts obligated $391,435 to Mark Zimmer in fiscal year 2025 and $624,535 in fiscal years 2023 through 2027.
How does Mark Zimmer rank among federal contractors?
Mark Zimmer ranked #33 in PSC N045, #48 in PSC 4410 and #85 in NAICS 333414 in FY2025.
What is Mark Zimmer's most recent federal award?
Mark Zimmer's most recent federal contract award is Servicing 2 AO smith condensing boilers, replacing 2 slant-finn modular boilers and rebuilding 3 armstrong pumps at… (70Z08426PDL950005), from Coast Guard, on September 21, 2026.
On GovTribe
See Mark Zimmer's full federal record
- Federal contract awards
- Funding analysis by agency, NAICS and set-aside
- Similar vendors