Business Details
50+ Years
experience
Emergency
services
Trusted Plumbing & HVAC Services in Bismarck
Founded in 1908, H A Thompson & Sons has built a legacy of excellence in plumbing, heating, air conditioning, and mechanical contracting. Our expertise spans residential and commercial sectors across North Dakota, South Dakota, Minnesota, and Montana. Since 1991, our LINC Service Contractor status has enabled us to deliver cost-effective environmental maintenance solutions for over 1,000 buildings regionally. With operations in Bismarck, Mandan, Fargo, and five additional regional offices, we combine century-old craftsmanship with modern technical innovation. Our team specializes in furnace and air conditioner replacements, water heating systems, bathroom remodels, and commercial mechanical construction. We maintain rigorous industry standards through continuous training and investment in advanced technologies like Mitsubishi Mini-Split Systems and pipe reline rehabilitation.Our commitment to quality is reflected in our 24/7 service availability for emergency repairs and our financing options for residential clients. As a family-owned business operating for over 115 years, we prioritize personalized service while maintaining the operational scale to handle large commercial projects. Our technicians hold current certifications in HVAC and plumbing trades, ensuring compliance with all state and federal regulations. This combination of experience, technical capability, and customer focus positions us as a trusted partner for both homeowners and business operators across the northern plains region.
Services
Forced Air Heating
Mitsubishi Mini-Split Systems
Hot Water Heating
Residential Plumbing
Commercial Contract Maintenance
Energy Conservation
Pipe Reline Rehab
Bathroom Remodels
Garage Heater Installations
Commercial Mechanical Construction
Details
- Year established: 1908
Highlights and features
- 115+ years of combined experience in plumbing and HVAC services
- LINC Service Contractor with environmental maintenance expertise
- Maintain mechanical systems in 1,000+ commercial buildings
- Seven regional office locations for comprehensive coverage
- Offer financing options for residential service installations
Services
Forced Air Heating
We install and service high-efficiency forced air heating systems for residential properties. Our technicians specialize in modern furnace replacements with improved energy efficiency ratings. This service includes complete system diagnostics, component replacement, and performance optimization for homes in the Bismarck/Mandan area.
Mitsubishi Mini-Split Systems
Our ductless mini-split system installations provide zoned temperature control for homes and businesses. This energy-efficient solution works well for room additions, garages, and commercial spaces. We handle complete system design, installation, and maintenance for optimal performance and energy savings.
Commercial Contract Maintenance
We offer comprehensive maintenance agreements for commercial properties through our LINC Service Contractor program. Services include scheduled inspections, preventive maintenance, and emergency repairs for heating and cooling systems in over 1,000 regional buildings.
Pipe Reline Rehab
Our trenchless pipe rehabilitation technology repairs damaged drain lines with minimal disruption. This service uses advanced lining materials to restore pipe integrity without excavation. Available for commercial properties and select residential applications across our service territory.
Bathroom Remodels
We provide complete bathroom remodeling services including plumbing fixture upgrades, water supply system improvements, and ventilation enhancements. Our team handles projects from basic updates to full-scale renovations with custom design options for residential clients.
Questions
What residential HVAC services do you offer?
We provide furnace and air conditioner replacements, Mitsubishi Mini-Split Systems, hot water heating solutions, and garage heater installations for homes in Bismarck and Mandan.
Do you offer commercial maintenance contracts?
Yes, we provide Commercial Contract Maintenance including preventive maintenance, repairs, retrofits, and energy conservation services for businesses in multiple states.
What plumbing services are available?
Our residential plumbing services include water heater replacements, bathroom remodels, garbage disposal installation, and natural gas grill piping in the Bismarck/Mandan area.
Do you serve areas outside Bismarck?
We operate from seven locations including Bismarck, Fargo, Watford City, Gwinner, Garrison, New Town, and Minot, serving clients across the northern plains region.
Is financing available for home HVAC systems?
Yes, we offer financing options for residential heating and cooling system installations to qualified customers in our service areas.
What emergency services do you provide?
We offer emergency plumbing and HVAC repair services with 24/7 availability for urgent residential and commercial needs.
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