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H. A. THOMPSON & SONS
  • Home
    • The H.A. Thompson Story
    • Privacy Policy
  • Online Bill Pay
  • Schedule Service
  • Residential
    • Free Estimates
    • Financing
    • Forced Air Heating and Cooling
    • Mitsubishi Mini-Split Systems
    • Hot Water Heating
    • Controls & IAQ
    • Propane & Natural Gas Piping
    • Residential Plumbing
    • Residential Contract Maintenance
  • Commercial
    • Commercial Contract Maintenance
    • Repairs, Retrofits and Upgrades
    • Energy Conservation
    • Commercial Mechanical Construction Services >
      • Design Build
      • New Construction
      • Prefab Services
      • Repair/Remodel
  • Reline
    • Drain Pipe Rehab
  • Careers
  • Contact Us
    • Bismarck Office
    • Fargo Office

New Construction Services

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​As one of the oldest Mechanical companies in the city of Bismarck, we pride ourselves in the thousands of buildings we have installed the plumbing and piping systems, both here in Bismarck/Mandan and throughout the state of North Dakota.

​We continue to strive to install the highest quality mechanical systems at a competitive price utilizing a highly skilled workforce and today’s newest technologies to make certain your project is completed on time and within budget.

​Piping systems include plumbing, boiler, chilled water, heat pump, refrigeration, natural gas, medical gas using steel, copper, plastic, PEX as well as many of today’s newest piping products. All of our installers have the latest certifications and training to install each system.
Corporate Headquarters:
911 South 9th Street
Bismarck, ND  58504
Phone: (701) 223-3393
Fax: (701) 223-1517
Email: [email protected]
Fargo Office
2601 12th St N, Suite 400
Fargo, ND  58102

© 2025 - H.A. Thompson & Sons
H.A. Thompson & Sons Privacy Policy
  • Home
    • The H.A. Thompson Story
    • Privacy Policy
  • Online Bill Pay
  • Schedule Service
  • Residential
    • Free Estimates
    • Financing
    • Forced Air Heating and Cooling
    • Mitsubishi Mini-Split Systems
    • Hot Water Heating
    • Controls & IAQ
    • Propane & Natural Gas Piping
    • Residential Plumbing
    • Residential Contract Maintenance
  • Commercial
    • Commercial Contract Maintenance
    • Repairs, Retrofits and Upgrades
    • Energy Conservation
    • Commercial Mechanical Construction Services >
      • Design Build
      • New Construction
      • Prefab Services
      • Repair/Remodel
  • Reline
    • Drain Pipe Rehab
  • Careers
  • Contact Us
    • Bismarck Office
    • Fargo Office