Tested Performance. Total Assurance.

Tested Performance. Total Assurance.

Tested Performance. Total Assurance.

Tested Performance. Total Assurance.

Tested Performance.
Total Assurance.

Tested Performance.
Total Assurance.

Tested Performance.
Total Assurance.

Tested Performance.
Total Assurance.

We build innovative solutions for today’s government, commercial, and industrial infrastructures.

Our

Expertise

  • HVAC Design and Installation
  • Ductwork Design and Installation
  • Commercial Chiller Systems
  • Commercial Boilers
  • Air Handler Systems
  • Domestic Hot Water Systems
  • Pump Repair and Installation
  • VRF System Design and Installation
  • Ventilation Systems
  • Hydronic and Steam Boilers
  • Exhaust Systems
  • Humidification Systems
  • Ultra Violet Lighting
  • Energy Savings Analysis
  • Preventative Maintenance
  • Equipment Inventory and Evaluation
  • Facilities Management
  • Design Build Office Space
  • Electrical Services and Installation
  • Asphalt and Paving
  • Solid Waste Collection
  • Janitorial Services

In The Media

Jill’s White House makeover:

The next First Lady gets to work on renovations

TATLERHolmes Mechanical Contractors hired for renovations of the First Lady’s ‘EW refresh’  … read more

White House

Spending Over $1.2 Mil to ‘Refresh’ East Wing Restrooms

FOX 22 – Local, minority-owned Holmes Mechanical Contractors specializing in all sorts of big-building renovations is selected … read more

About Us

Holmes Mechanical Contractors (HMC)

HMC is an independent, family-owned and operated small business with more than 40 years of experience. Our professional team of project managers, certified technicians and facility operators receive leading-edge training in energy technology, allowing HMC to expertly fuse facility operations and maintenance services to its core capabilities. We align ourselves with industry trends and maintain up-to-date licenses and certifications  to ensure effective results. HMC proudly serves the Washington, DC-Maryland-Virginia metropolitan area as a world-class competitor for prime and subcontract market opportunities. HMC is an 8(a) Diversity Supplier and Veteran-Owned Business collaborating with Federal, State, and local jurisdictions as a regional MBE/DBE/SBE firm.

Ronald E. Holmes, Sr., Founder and CEO, has been a leader in HVAC and general contracting throughout his career. First working under the tutelage of his father, Ron then went on to serve in the U.S. Navy aboard the U.S.S. Oriskansy. He continued his service in the Federal sector as a manager, after which he made a full-time commitment to HMC.

Past

Performance

  • The White House

  • U.S. General Services Administration

  • U.S. Food and Drug Administration

  • Spirit of Faith Christian Center

  • U.S. Department of State

  • Homewood Suites

  • U.S. Department of Labor

  • U.S. Secret Service

  • U.S. Customs and Border Protection

  • Prince George’s County
    Public Schools

  • U.S. Department of Health and
    Human Services

  • U.S. Department of Housing and
    Urban Development

  • U.S. Department of Homeland Security

  • U.S. Department of Agriculture

  • Maryland Department of General Services

  • Maryland State Highway Administration

  • Sentara Northern Virginia Medical Center

  • MD Department of Natural Resources

  • Maryland 5th Regiment Armory

Celebrating Over Forty
Years of Mastery.

  • The White House
  • U.S. General Services Administration
  • U.S. Food and Drug Administration
  • Spirit of Faith Christian Center
  • U.S. Department of State
  • Homewood Suites
  • U.S. Department of Labor
  • U.S. Secret Service
  • U.S. Customs and Border Protection
  • Prince George’s County
    Public Schools
  • U.S. Department of Health and
    Human Services
  • U.S. Department of Housing and Urban Development
  • U.S. Department of Homeland Security
  • U.S. Department of Agriculture
  • Maryland Department of General Services
  • Maryland State Highway Administration
  • Sentara Northern Virginia Medical Center
  • MD Department of Natural Resources
  • Maryland 5th Regiment Armory

 

Celebrating over Forty years of mastery.

  • The White House

  • U.S. General Services Administration

  • U.S. Food and Drug Administration

  • Spirit of Faith Christian Center

  • U.S. Department of State

  • Homewood Suites

  • U.S. Department of Labor

  • U.S. Secret Service

  • U.S. Customs and Border Protection

  • Prince George’s County Public Schools

  • U.S. Department of Health and Human Services

  • U.S. Department of Housing and Urban Development

  • U.S. Department of Homeland Security

  • U.S. Department of Agriculture

  • Maryland Department of General Services

  • Maryland State Highway Administration

  • Sentara Northern Virginia Medical Center

  • MD Department of Natural Resources

  • Maryland 5th Regiment Armory

Celebrating over Forty
years of mastery.

Company

Information

GSA Schedule Contract

GS-21-F-013GA

Cage Code

62WY6

DUNS

963264424

NAIC CODES

238160   238320   541320   561730

238210   238330   541350   561990

238220   238350   561210   562111

238290   238390   561499   562119

238310   531311   561720   562910

Licenses and Certifications

  • Federal SBA 8(a) Certification
  • Maryland General Contractors License #W14346779

  • Maryland MDOT MBE/DBE/SBE Certification

  • Prince George’s County CBSE/MBE/DBE Certification

  • HVAC-R Master’s License in Maryland, the District of Columbia and Virginia

  • Steam Engineer License in Maryland, the District of Columbia and Virginia
  • WSSC Registered Supplier #15-390, Masters in Maryland, the District of Columbia, and Virginia

  • Facilities Management Certification

  • OSHA  (Construction Industry) Certification

What Our Clients Say

Holmes Mechanical Contractors has a group of highly trained technicians that always go above and beyond to meet our Agency’s needs. They have performed a variety of services for HUD, including mechanical, electrical, and plumbing work.  Each time the work has been exceptional! 

George Jones

Director of Facilities Management, Department of Housing and Urban Development

Sentara Hospital is extremely pleased with the services provided by Holmes Mechanical Contractors. We’ve used them for several major projects and have never been disappointed. Their response time is expedient, and their work is proficient. These qualities are essential when working in a hospital setting. 

Joe Benton

Chief Engineer, Sentara Northern Virginia Medical Center, VA

Holmes Mechanical Contractors performed outstanding work on a major renovation project for the Gilbane Construction Company. They stayed within schedule and did “high quality” mechanical work. Their crew was professional and provided outstanding customer service to our clients.

John Rota

Senior Project Manager, Gilbane Construction Company

C o n t a c t  Us

Call Us

(301) 808-0707

Office Location

8900 Edgeworth Drive, Unit D,
Capitol Heights, MD 20743

Open Hours

M-F: 8am - 5pm, S-S, 9am - 1pm

Ask a Question or Request a Quote

Current Employment Opportunities

Site Superintendent

Project Manager

Estimator

HVAC Technician –
Journeyman License / Certification