Trinmar Contracting Services, Inc. was incorporated in the state of Maryland on May 16, 2001 by founder and owner Hayden Hall. With more than 33 years of experience working in the pipe trade, Hayden has gained extensive experience in ASME code pipe welding, steam fitting & pipe fitting, rigging, and various types of equipment setting for major construction companies such as the Whiting-Turner Contracting Company, the Poole and Kent Corporation, and the Bechtel Corporation to name just a few. This service will remain one of our two core services.

Certified MBE / SBA 8(a)

Trinmar Contracting is a minority-owned, certified Minority Business Enterprise (MBE) with the U.S. Small Business Administration 8(a) obtained in 2008 and SDB programs, the Maryland Department of Transportation (MDOT) and other jurisdictions where it performs work. Many state and federally-funded projects have been structured to support and provide opportunities for small and disadvantaged business. Trinmar Contracting Services was created in response to the demand for utilizing qualified companies meeting specified certification requirements.

Specialty Mechanical Contractor - Commercial & Industrial

Trinmar Contracting Services is a mechanical contracting firm performing services as listed under the 2002 NAICS Code definition number 238220 — Plumbing, Heating, and Air-Conditioning Contractors. We specialize in commercial construction, especially large scale, industrial, institutional, government, medical, office, educational, power plant, and transportation projects. The following list identifies the primary types of work we are qualified to do. However, we also have the capability to perform under several different NAICS code designations through various strategic relationships we have developed with other mechanical, electrical, plumbing (M/E/P) firms.

2002 NAICS	1997 NAICS	1987 SIC		Corresponding Index Entries
238220	235110	1711		Air system balancing and testing
238220	235110	1711		Air vent installation
238220	235110	1711		Air-conditioning system (except window) installation
238220	235110	1711		Bathroom plumbing fixture and sanitary ware installation
238220	235110	1711		Blower and fan, cooling and dry heating, installation
238220	235110	7699		Boiler chipping, cleaning and scaling
238220	235110	1711		Boiler, heating, installation
238220	235110	1711		Central air-conditioning equipment installation
238220	235110	1711		Central cooling equipment and piping installation
238220	235110	1711		Central heating equipment and piping installation
238220	235110	1711		Chilled water system installation
238220	235110	1711		Chimney liner installation
238220	235110	1711		Commercial freezer installation
238220	235110	1711		Commercial refrigeration system installation
238220	235910	1791		Cooling tower installation
238220	235110	1711		Drain, waste and vent system installation
238220	235110	1711		Drinking fountain installation
238220	235110	1711		Dry heating equipment installation
238220	235110	1711		Duct work (e.g., cooling, dust collection, exhaust, heating, ventilation) install
238220	235950	1796		Dust collecting and bag house equipment installation
238220	235110	1711		Exhaust system (e.g., kitchens, industrial work areas) installation
238220	235110	1711		Fire sprinkler system installation
238220	235110	1711		Fireplace, natural gas, installation
238220	235110	1711		Fuel oil burner installation
238220	235110	1711		Furnace conversion (i.e., from one fuel to another)
238220	235110	1711		Furnace humidifier installation
238220	235110	1711		Furnace installation
238220	235110	1711		Furnace, forced air, installation
238220	235110	1711		Gas fitting contractor
238220	235110	1711		Gas line installation, individual hookup, contractors
238220	235110	1711		Heat pump installation
238220	235110	1711		Heating and cooling duct work installation
238220	235110	1711		Heating and ventilation system component (e.g., air registers, diffusers, filters
238220	235110	1711		Heating boiler installation
238220	235110	1711		Heating contractors
238220	235110	1711		Heating equipment installation
238220	235110	1711		Heating, ventilation and air-conditioning (HVAC) contractors
238220	235110	1711		Hot water heating system installation
238220	235110	1711		Hot water tank installation
238220	235110	1711		Household oil storage tank installation
238220	235110	1711		HVAC (heating, ventilation and air-conditioning) contractors
238220	235110	1711		Hydronic heating system installation
238220	235110	1711		Industrial process piping installation
238220	235110	1711		Kitchen sink and hardware installation
238220	235110	1711		Lawn sprinkler system installation
238220	235110	1711		Mechanical contractors
238220	235110	1711		Natural gas piping installation
238220	235110	1711		Oil burner installation
238220	235110	1711		Pipe fitting contractors
238220	235110	1711		Plumbers
238220	235110	1711		Plumbing and heating contractors
238220	235110	1711		Plumbing contractors
238220	235110	1711		Plumbing fixture installation
238220	235110	1711		Process piping installation
238220	235110	1711		Pumping system, water, installation
238220	235110	1711		Radiant floor heating equipment installation
238220	235110	1711		Refrigeration system (e.g., commercial, industrial, scientific) installation
238220	235110	1711		Sanitary ware installation
238220	235950	1796		Scrubber, air purification, installation
238220	235110	1711		Sewer hook-up and connection, building
238220	235110	1711		Sheet metal duct work installation
238220	235110	1711		Snow melting system (e.g., hot water, glycol) installation
238220	235110	1711		Solar heating equipment installation
238220	235110	1711		Sprinkler system, building, installation
238220	235110	1711		Steam fitting contractors
238220	235110	1711		Sump pump installation
238220	235110	1711		Ventilating contractors
238220	235110	1711		Warehouse refrigeration system installation
238220	235110	1711		Warm air heating system installation
238220	235110	1711		Water heater installation
238220	235110	1711		Water meter installation
238220	235110	1711		Water softener installation
238220	235110	1711		Water system balancing and testing contractors