Mark Zimmer
Mark Zimmer (doing business as Mark of the Z Heating) is a small business in Grant, MI registered on SAM.gov to bid on federal contracts. It has won about $677,959 in federal prime contracts since fiscal year 2024, according to USAspending.gov.
- UEI
- DHVTENFD52D3
- CAGE code
- 1GM97
- SAM.gov registration
- Active
Registration details
| Legal business name | Mark Zimmer |
|---|---|
| Doing business as | Mark of the Z Heating |
| Unique Entity ID (UEI) | DHVTENFD52D3 |
| CAGE code | 1GM97 |
| Location | Grant, MI |
| SAM.gov registration | Active through Apr 13, 2027 |
| Business started | 1984 |
| Primary NAICS code | 238220: Plumbing, Heating, and Air-Conditioning Contractors |
| Website | www.mofzhvac.com |
Federal contract history
| Fiscal year | Prime contract obligations |
|---|---|
| FY2024 | $188,212 |
| FY2025 | $393,321 |
| FY2026 | $96,426 |
Its biggest federal customers over the last four fiscal years: U.S. Coast Guard ($355,201), Saint Lawrence Seaway Development Corporation ($138,462), Maritime Administration ($94,000), Department of the Air Force ($59,046) and National Park Service ($31,250).
Recent contract awards
| Awarded | Agency | What it's for | Amount |
|---|---|---|---|
| Sep 21, 2026 | U.S. Coast Guard | Servicing 2 ao smith condensing boilers, replacing 2 slant-finn modular boilers and… | $44,888 |
| Sep 15, 2025 | U.S. Coast Guard | Hot water boiler removal and replacement | $192,588 |
| Sep 10, 2025 | U.S. Coast Guard | Service | $48,975 |
| Mar 14, 2025 | Department of the Air Force | One brand name aerco benchmark 1500 boiler | $59,046 |
| Feb 12, 2025 | National Park Service | This project shall remove and dispose of the existing 500k btu boiler and install a… | $31,250 |
| Feb 6, 2025 | U.S. Coast Guard | Time sensitive | $19,000 |
Figures are prime contract obligations reported to USAspending.gov. Work done as a subcontractor isn't included.
NAICS codes Mark Zimmer is small under
On its SAM.gov registration, Mark Zimmer meets the SBA size standard for these industries, so it can bid on small business set-asides that use them.
Open contracts in Mark Zimmer's NAICS codes
56 open federal opportunities on SAM.gov use a NAICS code Mark Zimmer is small under. These are due soonest.
- CON | Z1DA | REPLACE OR CHILLERS | 580-23-105 | PRESOLICITATION
✦ The VA Medical Center in Houston, TX plans a construction contract to remove and replace two operating room chillers in Building 100.
Due in 2 daysOct 12, 2026
- VA Palo Alto Boiler Plant Services
Due in 2 daysOct 12, 2026
- Infrared Radiant Heat Maintenance Services
Due in 2 daysOct 12, 2026
- FY 2026 Preventive Maintenance Services to the Building Automation System
Due in 3 daysOct 13, 2026
- CON | Z2DA | REPLACE CHILLER 1 B104 | 580-24-111 | PRESOLICITATION
✦ The VA medical center in Houston, TX plans to replace a failed 1,000-ton chiller (plus transformer, piping, valves and controls) in Building 104.
Due in 3 daysOct 13, 2026
Similar small businesses
Other small businesses with the same primary NAICS code (238220) that have won federal contracts, starting with Michigan:
- Valley Mechanical Inc, Menominee, MI
- Advantage Mechanical-Refrigeration, Inc., Cedar Springs, MI
- S & D Mechanical Services, Inc, Grand Blanc, MI
- Ayj Solutions LLC, Canton, MI
- Patrick's Plumbing & Heating, Inc., Atlantic Mine, MI
- Albert Heating & Cooling Inc, Sault Sainte Marie, MI
Frequently asked questions
What is Mark Zimmer's CAGE code?
Mark Zimmer's CAGE code is 1GM97. The Defense Logistics Agency assigns CAGE codes when a business registers on SAM.gov.
What is Mark Zimmer's UEI?
Mark Zimmer's Unique Entity ID (UEI) is DHVTENFD52D3. SAM.gov assigns the UEI, and it identifies the business across the federal government.
Is Mark Zimmer's SAM.gov registration active?
Yes, as of the latest SAM.gov public data, Mark Zimmer's registration is active through apr 13, 2027. Registrations are renewed every year.
Is Mark Zimmer a small business?
Mark Zimmer is registered on SAM.gov as small under 3 NAICS codes, including its primary code, 238220. Size is set per NAICS code, so a business can be small for some contracts and not others.
Keep going
- Look up another business's CAGE code or UEI
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- How to become a government subcontractor
Registration details come from SAM.gov's public entity extract and contract figures from USAspending.gov. Contact names and street addresses are left out. To change these details, update the registration on SAM.gov. To ask us to remove this page, email hello@fedready.us.