Commercial plumbing companies in Maryland operate at the core of infrastructure, focusing on plumbing solutions tailored for apartments, offices, and industrial facilities. These firms handle everything from installations to emergency repairs, ensuring systems function efficiently. With a surge in eco-friendly practices and innovative technologies like smart plumbing solutions, the industry is evolving rapidly. Many companies are now integrating sustainable practices, such as water conservation measures and energy-saving upgrades, reflecting a broader commitment to environmental responsibility. This shift not only aids customer savings but also meets increasing regulatory demands for sustainable construction.


The companies listed are notable players within Maryland’s plumbing sector, varying from small family-owned businesses to larger firms with significant market presence. They were founded between 1949 and 2012, reflecting a mix of experience and modern expertise. Headquartered across Maryland, cities like Columbia and Gaithersburg feature prominently. Notable specializations include emergency services, residential plumbing, and commercial installations, catering to a broad clientele. Overall, these companies exemplify a solid commitment to improving plumbing solutions and customer service in both residential and commercial sectors.


Continue reading to discover the top commercial plumbing companies in Maryland.


Top 19 Commercial Plumbing Companies in Maryland


1. Associates Plumbing, Inc.


Associates Plumbing, Inc. is a plumbing service provider based in Columbia, Maryland, with a focus on commercial clients. Founded in 1982, the company has been serving the Maryland, DC, and Northern Virginia areas for over 40 years. They specialize in plumbing solutions tailored for the property management industry, offering services such as 24/7 emergency plumbing, gas testing and repairs, water heater installations, and underground sewer and water repairs. Associates Plumbing prides itself on its commitment to customer satisfaction, aiming to deliver honest and reliable service consistently. The company is also actively involved in professional associations, which helps them stay updated on industry standards and best practices. Their team is equipped to handle both routine and complex plumbing challenges, making them a trusted partner for many property management firms in the region.


2. Mallick Plumbing & Heating

  • Website: mallickplumbing.com
  • Ownership type: Private
  • Headquarters: Gaithersburg, Maryland, United States (USA)
  • Employee distribution: United States (USA) 68%, India 32%
  • Founded year: 1996
  • Headcount: 11-50
  • LinkedIn: mallickplumbing

Mallick Plumbing & Heating, Inc. is a plumbing and heating service provider based in Gaithersburg, Maryland. Founded in 1996, the company has built a reputation for delivering quality plumbing solutions to both residential and commercial customers. Their service offerings include plumbing repairs, water heater installations, and emergency plumbing services. The company prides itself on customer satisfaction and employs a team of licensed technicians who are dedicated to resolving plumbing issues efficiently. Mallick Plumbing & Heating also emphasizes ongoing training for its staff to stay current with industry standards and technologies. They actively participate in community initiatives, such as donating a portion of their proceeds to support breast cancer awareness. With a workforce of 11-50 employees, they maintain a strong local presence while also serving a broader area, including various cities in Maryland and Washington D.C.


3. Raine & Son, LLC

  • Website: raineandson.com
  • Ownership type: Private
  • Headquarters: Hyattsville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1962
  • Headcount: 51-200
  • LinkedIn: raine-%26-son-llc

Raine & Son, LLC is a plumbing and property management service provider based in Hyattsville, Maryland. Established in 1962, the company has built a reputation for delivering reliable plumbing solutions to both commercial and residential clients. Their service portfolio includes water heater installation, drain cleaning, sewer services, and emergency plumbing, catering to a wide range of customers, including homeowners, businesses, and property management firms. Raine & Son prides itself on professionalism, cleanliness, and fair pricing, aiming to ensure customer satisfaction. The company operates 24/7, providing emergency services to address urgent plumbing issues. With a focus on training and certification, Raine & Son invests in its workforce to maintain high service standards. Their operational footprint covers Maryland, Northern Virginia, and Washington, DC, making them a significant player in the regional plumbing industry.


4. First Class Plumbing, LLC

  • Website: 1stclassplumber.com
  • Ownership type: Private
  • Headquarters: Annapolis, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1994
  • Headcount: 11-50
  • LinkedIn: first-class-plumbing-llc

First Class Plumbing, LLC, based in Annapolis, Maryland, has been serving the plumbing needs of both residential and commercial clients since its founding in 1994. The company specializes in a wide array of plumbing solutions, including drain cleaning, water heater installation, and emergency plumbing services. With a team of certified professionals, First Class Plumbing prides itself on providing high-quality service around the clock. The firm is particularly noted for its commitment to customer satisfaction, as evidenced by positive testimonials from clients. As a woman-owned business, it also emphasizes inclusivity in its operations. First Class Plumbing has built a reputation for reliability and expertise, making it a trusted choice for plumbing services in the DC Metro area.


5. Roto-Rooter Plumbing & Water Cleanup Franchise


Roto-Rooter Plumbing & Water Cleanup Franchise, based in Denton, Maryland, has been a family-owned business since its inception in 1974. Operating as an independent franchise of the well-known Roto-Rooter brand, the company specializes in a wide array of plumbing services, including plumbing repairs, sewer and drain cleaning, septic system maintenance, and water cleanup. They serve both residential and commercial customers, ensuring that their plumbing systems function efficiently. Roto-Rooter of Delmarva prides itself on its prompt service and commitment to quality, with a team of certified professionals ready to tackle everything from minor repairs to major installations. The company is also equipped to handle emergency plumbing situations, providing 24/7 service to address urgent needs. Their extensive service area covers the Delmarva Peninsula, including parts of Delaware, Maryland, and Virginia, making them a key player in the regional plumbing market.


6. Aj Michaels Company

  • Website: ajmichaels.com
  • Ownership type: Family Owned
  • Headquarters: Baltimore, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1978
  • Headcount: 11-50
  • LinkedIn: aj-michaels-company

A.J. Michaels Company, based in Baltimore, Maryland, has been a family-owned service provider since its inception in 1978. Specializing in HVAC, plumbing, and home performance solutions, the company caters to both residential and commercial clients. Their service offerings include heating and cooling installations, plumbing repairs, and energy audits, all aimed at enhancing comfort and efficiency. A.J. Michaels is particularly noted for its commercial plumbing services, which are part of a broader portfolio that also includes commercial heating and cooling solutions. The company prides itself on its technical expertise, holding Master's licenses in plumbing, heating, air conditioning, and electric work. They have been recognized for their energy-saving achievements and have received accolades from the Department of Energy and local utility companies. A.J. Michaels emphasizes ongoing education for its technicians, ensuring they remain current with industry innovations and standards. This commitment to quality and customer satisfaction is reflected in their strong reputation and positive customer testimonials.


7. T&D Plumbing, Heating, A/C, & Utilities


T&D Plumbing, Heating, A/C, & Utilities is a family-owned service company based in Halethorpe, Maryland, with a history dating back to 1958. The company specializes in plumbing, heating, cooling, and utility services, catering to both residential and commercial clients. With a workforce of approximately 21 employees, T&D Plumbing prides itself on delivering reliable and affordable solutions. Their service portfolio includes emergency plumbing repairs, HVAC installations, and utility development, demonstrating their capability to manage a variety of projects. T&D Plumbing has worked with notable contractors on significant projects, including the installation of energy-efficient HVAC systems in new residential buildings and comprehensive plumbing renovations in older structures. Their focus on utilizing advanced technology and equipment further enhances their service delivery, ensuring they meet the evolving needs of their customers.


8. O'Connor Plumbing

  • Website: oconnorplumbing.net
  • Ownership type: Private Equity
  • Headquarters: Frederick, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: November 2023
  • Founded year: 1949
  • Headcount: 51-200
  • LinkedIn: o-connor-plumbing

O'Connor Plumbing, based in Frederick, Maryland, has been a trusted name in commercial plumbing since its founding in 1949. With a workforce of approximately 41 employees, the company specializes in a wide range of plumbing services tailored for businesses and property managers in the Greater Washington area. Their offerings include back-flow prevention, hydro jetting, sewer lining, and preventative maintenance, among others. O'Connor Plumbing prides itself on its commitment to quality and customer satisfaction, as reflected in their impressive online reviews. The company is also family-owned, maintaining a strong connection to its roots while adapting to the evolving needs of the industry. Furthermore, O'Connor Plumbing actively participates in community initiatives, supporting various local charities and organizations, which underscores their role as a responsible corporate citizen. This blend of experience, service quality, and community involvement positions O'Connor Plumbing as a significant player in the commercial plumbing market.


9. All Around Plumbing Inc

  • Website: allaroundplumbing.com
  • Ownership type: Private
  • Headquarters: Frederick, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1999
  • Headcount: 11-50
  • LinkedIn: all-around-plumbing-inc

All Around Plumbing Inc, based in Frederick, Maryland, is a private plumbing contractor established in 1999. With a workforce of approximately 29 employees, the company specializes in a wide array of plumbing services, including repairs, installations, and remodeling. They cater to both residential and light commercial clients, serving a broad geographic area that includes Maryland and the Washington DC metro region. Over the years, All Around Plumbing has built a solid reputation, evidenced by numerous awards for craftsmanship and service excellence from the Frederick County Builders Association. Their commitment to quality is reflected in their licensed and insured status, as well as their certifications in various plumbing specialties. The company prides itself on its core values of honesty, integrity, and reliability, which resonate through their customer testimonials and long-standing client relationships.


10. City WIde Mechanical LLC


City Wide Mechanical LLC, based in Sunderland, Maryland, has been a prominent player in the mechanical services industry since its inception in 2001. Specializing in plumbing, HVAC, and refrigeration, the company caters primarily to commercial and institutional clients. Their portfolio includes a variety of projects, such as schools, courthouses, and military facilities, reflecting their expertise in handling complex and large-scale assignments. City Wide Mechanical is committed to quality, employing only trained and licensed professionals to ensure high standards in service delivery. The company is licensed and bonded, with a bonding capacity exceeding $20 million, which positions them well for significant contracts. Their recent projects further illustrate their active engagement in the market, showcasing their ability to meet the needs of diverse clients across Maryland, Virginia, and the District of Columbia.


11. Anchor Mechanical LLC

  • Website: anchormech.com
  • Ownership type: Family Owned
  • Headquarters: Forest Hill, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2012
  • Headcount: 201-500
  • LinkedIn: anchor-mechanical-llc

Anchor Mechanical LLC, based in Forest Hill, Maryland, is a family-owned service company specializing in HVAC and plumbing solutions. Founded in 2012, the company has built a reputation for providing high-quality installation, maintenance, and repair services to both residential and commercial clients. With a workforce of around 69 employees, Anchor Mechanical operates primarily in Central Maryland, focusing on areas such as Harford, Baltimore, and Cecil Counties. Their commercial services include handling large-scale projects and emergency services, showcasing their capability to manage complex plumbing needs. The company emphasizes customer satisfaction and has received positive feedback from clients, further solidifying its standing in the industry.


12. Seaside Plumbing INC

  • Website: seasideplumbinginc.com
  • Ownership type: Private
  • Headquarters: Berlin, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2003
  • Headcount: 11-50
  • LinkedIn: seaside-plumbing-inc

Seaside Plumbing INC, founded in 2003, is a privately owned plumbing service provider based in Berlin, Maryland. The company specializes in a wide array of plumbing and gas services tailored for both residential and commercial clients across Maryland and Delaware. With a workforce of 22 employees, Seaside Plumbing emphasizes high-quality workmanship and exceptional customer service. Their service offerings include drain clearing, water heater installation, sewer and drain services, and plumbing repairs, among others. The company prides itself on its commitment to sustainability, as evidenced by initiatives like their annual giveaway of water-saving toilets. Seaside Plumbing has garnered a strong reputation in the industry, reflected in their A+ rating from the Better Business Bureau and a robust online presence with numerous positive customer reviews. Their focus on training and development for their technicians further underscores their dedication to maintaining high standards in service delivery.


13. Superior Mechanical Services

  • Website: superiormech.net
  • Ownership type: Private
  • Headquarters: Beltsville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 2001
  • Headcount: 51-200
  • LinkedIn: superior-mechanical-services

Superior Mechanical Services, established in 2001, is a private service company based in Beltsville, Maryland. With a workforce of approximately 58 employees, the company specializes in commercial HVAC and plumbing solutions. They provide a comprehensive range of services, including installation, repair, and emergency support, catering to various industries such as hotels, grocery stores, and office buildings. Their expertise extends to new construction projects, ensuring that mechanical systems are designed and installed to meet the specific needs of each facility. Superior Mechanical Services prides itself on its 24/7 emergency response capabilities, allowing them to address urgent plumbing and HVAC issues promptly. Their commitment to maintaining efficient and functional systems underscores their role as a trusted partner for businesses in the region, ensuring comfort and safety in commercial environments.


14. John G Webster

  • Website: johngwebster.com
  • Ownership type: Private
  • Headquarters: Beltsville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1912
  • Headcount: 11-50
  • LinkedIn: john-g-webster

John G Webster is a service-oriented company based in Beltsville, Maryland, specializing in plumbing, heating, and air conditioning solutions for both residential and commercial clients. Founded in 1912, the company has built a reputation for reliability and quality service in the Washington, DC area. They offer a wide array of services, including installation, maintenance, and repair of plumbing systems, heating units, and air conditioning systems. Their commercial plumbing services cater to various sectors, including offices, restaurants, and property management, ensuring that they meet the needs of a broad clientele. The company prides itself on its responsive service and preventive maintenance agreements, which help clients avoid costly breakdowns. Additionally, John G Webster is EPA certified, demonstrating their commitment to environmentally responsible practices. With a dedicated team and a well-equipped facility, they continue to serve the community effectively.


15. G.E. Tignall & Co., Inc.

  • Website: getignall.com
  • Ownership type: Private
  • Headquarters: Cockeysville, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1971
  • Headcount: 51-200
  • LinkedIn: g.e.-tignall-%26-co.-inc.

G.E. Tignall & Co., Inc. is a mechanical contracting company based in Cockeysville, Maryland, founded in 1971. The firm specializes in plumbing, heating, air-conditioning, and drain cleaning services, catering to a wide array of clients, including commercial, industrial, institutional, and residential sectors. With a workforce of 51-200 employees, G.E. Tignall & Co. prides itself on delivering high-quality craftsmanship and timely service. They offer 24-hour emergency services, ensuring that urgent plumbing needs are addressed promptly. The company is also an employee-owned entity, which may contribute to a strong commitment to quality and customer satisfaction. G.E. Tignall & Co. is actively involved in several local trade organizations, such as the American Subcontractors Association and the Maryland Plumbing-Heating-Cooling Contractors, reflecting their engagement and reputation within the contractor community.


16. Alpha Plumbing


Alpha Plumbing & Heating, based in Sandy Spring, Maryland, is a family-owned plumbing service company founded in 1995. With a strong emphasis on customer service, they offer a wide array of plumbing solutions, including repairs, sewer and drain services, heater replacements, gas line installations, and bathroom renovations. The company prides itself on its extensive experience, with the owner having over 40 years in the plumbing field. Alpha Plumbing serves both residential and commercial clients, ensuring that they meet the plumbing needs of various sectors. Their operational model focuses on direct communication with clients, allowing for a personalized service experience. They are licensed and insured, and they offer 24-hour emergency services, which enhances their appeal to commercial customers who may require immediate assistance. Alpha Plumbing has built its reputation primarily through word-of-mouth referrals, reflecting a strong commitment to quality and customer satisfaction.


17. Harvey W. Hottel, Inc.

  • Website: harveyhottel.com
  • Ownership type: Family Owned
  • Headquarters: Gaithersburg, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Founded year: 1945
  • Headcount: 51-200
  • LinkedIn: harvey-w.-hottel-inc

Harvey W. Hottel, Inc. is a family-owned service company based in Gaithersburg, Maryland, specializing in HVAC and plumbing solutions for commercial properties. Founded in 1945, the company has built a reputation for providing reliable and efficient mechanical systems. Their service portfolio includes installation, maintenance, and repair of heating, cooling, and plumbing systems, catering to a variety of clients, including businesses and government entities. The company prides itself on employing licensed professionals who undergo rigorous training, ensuring high-quality service. Harvey W. Hottel, Inc. is also committed to sustainability, offering LEED-certified contracting and renovation services. Their expertise extends to advanced technologies, such as geothermal systems and VRF systems, which enhance energy efficiency and reduce operational costs for clients. With a focus on customer satisfaction and a legacy of integrity, Harvey W. Hottel, Inc. continues to be a trusted partner for commercial plumbing and HVAC needs in the Mid-Atlantic region.


18. JPG Services

  • Website: jpgservicesinc.com
  • Ownership type: Corporate
  • Headquarters: Jessup, Maryland, United States (USA)
  • Employee distribution: United States (USA) 100%
  • Latest funding: March 2023
  • Founded year: 2006
  • Headcount: 51-200
  • LinkedIn: jpg-plumbing-services-inc-

JPG Services, based in Jessup, Maryland, has been providing commercial plumbing, HVAC, and industrial vacuum services since its inception in 2006. With a workforce of approximately 74 employees, the company operates primarily in Maryland, Virginia, and Washington, DC. JPG Services specializes in serving critical infrastructure sectors, including hospitals, universities, and government facilities, ensuring that these institutions maintain operational efficiency and comfort. Their service offerings include 24/7 emergency plumbing support, preventative maintenance, and energy sustainability solutions. In 2023, JPG Services became part of Exigent, a group focused on enhancing mechanical services, which further strengthens their position in the market. The company prides itself on professionalism, safety, and a customer-first approach, making it a trusted partner for many organizations.


19. Welch and Rushe, LLC


Welch and Rushe, LLC, founded in 1966, is a mechanical contractor based in Upper Marlboro, Maryland. The company specializes in HVAC and plumbing services, offering a comprehensive range of solutions that include 24/7 emergency services, preventive maintenance, and construction services. With a workforce of approximately 200 skilled employees, Welch and Rushe has developed a strong presence in the Washington, DC metropolitan area. They have successfully completed projects for various sectors, including government agencies, hospitals, and commercial businesses. Their portfolio includes notable works on historic properties and nationally recognized buildings, such as the Pentagon and the World War II Memorial. Welch and Rushe emphasizes quality service and customer satisfaction, which has contributed to their reputation and ongoing success in the industry.



Commercial Plumbing Insights: Key Companies in Maryland


CompanyHeadquarterSizeFoundedOwnership
Associates Plumbing, Inc.Columbia, Maryland, United States (USA)51-2001982Private
Mallick Plumbing & HeatingGaithersburg, Maryland, United States (USA)11-501996Private
Raine & Son, LLCHyattsville, Maryland, United States (USA)51-2001962Private
First Class Plumbing, LLCAnnapolis, Maryland, United States (USA)11-501994Private
Roto-Rooter Plumbing & Water Cleanup FranchiseDenton, Maryland, United States (USA)51-2001974Family Owned
Aj Michaels CompanyBaltimore, Maryland, United States (USA)11-501978Family Owned
T&D Plumbing, Heating, A/C, & UtilitiesHalethorpe, Maryland, United States (USA)51-2001958Private
O'Connor PlumbingFrederick, Maryland, United States (USA)51-2001949Private Equity
All Around Plumbing IncFrederick, Maryland, United States (USA)11-501999Private
City WIde Mechanical LLCSunderland, Maryland, United States (USA)51-2002002Private
Anchor Mechanical LLCForest Hill, Maryland, United States (USA)201-5002012Family Owned
Seaside Plumbing INCBerlin, Maryland, United States (USA)11-502003Private
Superior Mechanical ServicesBeltsville, Maryland, United States (USA)51-2002001Private
John G WebsterBeltsville, Maryland, United States (USA)11-501912Private
G.E. Tignall & Co., Inc.Cockeysville, Maryland, United States (USA)51-2001971Private
Alpha PlumbingAshton-Sandy Spring, Maryland, United States (USA)1-101995Family Owned
Harvey W. Hottel, Inc.Gaithersburg, Maryland, United States (USA)51-2001945Family Owned
JPG ServicesJessup, Maryland, United States (USA)51-2002006Corporate
Welch and Rushe, LLCUpper Marlboro, Maryland, United States (USA)51-2001966Private


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