H. A. Thompson & Sons

What H. A. Thompson & Sons does

H. A. Thompson & Sons is a family-owned mechanical contracting company founded in 1908 and headquartered in Bismarck, North Dakota. The firm provides integrated plumbing, heating, air conditioning, and mechanical construction services to commercial and residential customers across North Dakota, South Dakota, Minnesota, and Montana. The company operates from offices in Bismarck, Fargo, Watford City, Minot, Garrison, and New Town, supported by a fleet of 30+ service technicians available 24/7. It is a Certified Trane Comfort Specialist, an authorized Mitsubishi Electric dealer, a LINC Service Network contractor, and a Nu Flow trenchless pipe rehabilitation provider.

The company's service portfolio spans residential HVAC (forced air, hot water heating, mini-splits, IAQ products, smart thermostats), residential plumbing, commercial contract maintenance, design-build and new construction mechanical installation, prefabrication, repair/remodel, retrofits and upgrades, energy conservation analysis, and trenchless drain pipe relining. Underlying technology is largely traditional mechanical work (boilers, chillers, heat pumps, medical gas, steel/copper/plastic/PEX piping) augmented by Nu Flow's patented epoxy-saturated sleeve pipe-within-a-pipe process and modern IAQ devices such as UV air cleaners and high-performance media filters.

H. A. Thompson & Sons generates revenue through a mix of subscription-style maintenance contracts (LINC Environmental Maintenance Agreements for commercial, Contract Maintenance Agreements for residential), one-time project work (design/build, new construction, repair/remodel, pipe relining), and hardware sales/installations of Trane, Mitsubishi, AAON, McQuay, Carrier, Kohler, Delta, and Bradford White equipment. GTM is direct field sales with free in-home or business estimates, phone/toll-free lead capture, and website-driven scheduling. Commercial accounts are supported through structured recurring contracts; residential work is primarily transactional with financing offered through Wells Fargo. The company maintains the mechanical systems of 1,000+ commercial buildings across the northern plains region.

Name

H. A. Thompson & Sons

Legal name

H.A. Thompson & Sons

Website

https://hatandsons.com

Company type

Private

Founded year

1908

Operating status

Operating

Headcount range

51–100 employees

Short description

H. A. Thompson & Sons is a family-owned mechanical contractor founded in 1908 in Bismarck, ND, providing plumbing, HVAC, and mechanical construction services to residential and commercial customers across North Dakota, South Dakota, Minnesota, and Montana.

Ownership category

akta.pro rank

Product category

Mechanical Contracting Services (HVAC, Plumbing, and Mechanical Systems)

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822), Other Building Equipment Contractors (23829)

SIC

Wholesale-Hardware & Plumbing & Heating Equipment & Supplies (5070)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industries

Plumbing & Pipefitting Contracting (IMAFALAC), New Gas Line Installation & Extensions (HSAOAKAA), Gas Appliance Hookup & Disconnect (Stoves, Dryers, Fireplaces, Grills) (HSAOAKAF)

Keywords

• Mechanical contracting services
• HVAC installation and service
• Commercial plumbing contractors
• Residential heating cooling
• Trenchless pipe rehabilitation

Headquarters

HQ city

Bismarck

HQ country

United States

HQ region

North America

Offices6 records

Markets served

GTM type

B2B and B2C

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Infrastructure, Marketing or Sales, Technology or R&D

Revenue model

1. Commercial Maintenance Contracts: All-inclusive service contracts through LINC Service Network providing proactive maintenance for commercial HVAC systems. Minimizes downtime, reduces repairs, lowers energy costs, and eliminates emergency calls. Key growth driver since 1992.
2. Residential Maintenance Contracts: Contract Maintenance Agreements providing automatic periodic inspections for residential equipment. Covers emergency service labor charges and moving parts with no additional charges.
3. Commercial Mechanical Construction: Design/build, new construction, prefabrication, repair/remodel services for commercial buildings. Includes plumbing, boiler, chilled water, heat pump, refrigeration, natural gas, and medical gas systems using steel, copper, plastic, and PEX piping.
4. Residential Plumbing Service: Plumbing services including bathroom remodels, toilet replacements, leak repairs, new construction basement bathroom finishes, and sewer main rodding for Bismarck/Mandan area residents.
5. Equipment Sales and Installation: Sales and installation of HVAC equipment (furnaces, air conditioners, water heaters) and plumbing components from manufacturers including Trane, Mitsubishi, Kohler, Delta, Bradford White, and others.
6. Pipe Relining Services: Trenchless drain pipe rehabilitation using Nu Flow patented technology. Creates new pipe within existing cavity with minimal destruction to landscapes and property.

Pricing tiers

Go-to-market motion3 records

Distribution channels4 records

Marketing channels5 records

Core offering

H.A. Thompson & Sons is a mechanical contracting firm that installs, services, and maintains plumbing, heating, air conditioning, and broader mechanical systems for residential and commercial customers across the northern plains. The company is a LINC Service Contractor providing structured environmental maintenance agreements, an authorized dealer and installer for Trane and Mitsubishi HVAC equipment, and a licensed provider of Nu Flow trenchless drain pipe rehabilitation. Field services are delivered directly by an in-house fleet of 30+ technicians on a 24/7 basis across North Dakota, South Dakota, Minnesota, and Montana.

Product overview

H.A. Thompson & Sons is a mechanical contractor founded in 1908 providing integrated residential and commercial HVAC, plumbing, and mechanical services across North Dakota, South Dakota, Minnesota, and Montana. The company operates as a Trane Comfort Specialist dealer and LINC Service Contractor. Residential offerings include forced air heating and cooling (Trane systems), Mitsubishi mini-split systems, hot water heating (boilers from Burnham and NTI), indoor air quality products, comfort controls/thermostats, plumbing services, and propane/natural gas piping. Commercial services span design-build, new construction, prefabrication, repair/remodel, equipment repairs and upgrades (working with Mitsubishi, Trane, AAON, McQuay, Carrier, Copeland, and B.A.C.), energy conservation, and drain pipe rehabilitation using Nu Flow technology. The company also offers contract maintenance programs for both residential and commercial customers, along with financing options through Wells Fargo.

Differentiator

Problem solved

Functional benefit

Products and services

• Residential HVAC Services Heating, cooling, and indoor air quality services for residential customers including furnace and air conditioner replacement, water heater replacement, garage heater installation, bathroom remodels, and humidifier installation for homeowners in the Bismarck region.
• Residential Plumbing Services Full residential plumbing services for homeowners including bathroom remodels, toilet replacement, leak repairs, new construction basement bathroom finishes, and sewer main rodding using components from Kohler, Delta, and Bradford White.
• Commercial Contract Maintenance (LINC Service Network) All-inclusive environmental maintenance contracts through the LINC Service Network providing preventive HVAC maintenance, repair, retrofit, upgrade, energy conservation, and 24/7 emergency service to commercial building and business owners; currently maintained across more than 1,000 buildings in the northern plains.
• Design Build Services Design-build mechanical services that engage from project concept to develop budgets and adjust mechanical systems while staying within budget for commercial construction projects.
• New Construction Services Mechanical construction of plumbing and piping systems for new buildings including plumbing, boiler, chilled water, heat pump, refrigeration, natural gas, and medical gas systems using steel, copper, plastic, and PEX piping.
• Prefab Services Prefabrication of piping assemblies in a controlled shop environment before project ground-breaking, used to accelerate construction schedules for commercial and residential new construction and remodels.
• Repair/Remodel Services Commercial mechanical repair and remodeling services including building additions, HVAC upgrades, piping system analysis, and the option to use lining systems to minimize destruction of floors, ceilings, and walls.
• Repairs, Retrofits and Upgrades Repair, retrofit, and upgrade services for boilers, rooftop units, and heat pumps drawing on equipment lines from Mitsubishi, Trane, AAON, McQuay, Carrier, Copeland, and B.A.C.
• Energy Conservation Services Energy conservation analysis and maintenance services aimed at minimizing energy usage through well-maintained equipment, with documented energy savings of 6-11% versus poorly maintained equipment.
• Forced Air Heating and Cooling Systems Trane-dealer sales, installation, and service of forced air heating and cooling systems using central blowers connected to ductwork that distribute conditioned air throughout homes.
• Mitsubishi Mini-Split Systems Authorized Mitsubishi Electric mini-split heating and cooling system sales, installation, and service for residential and commercial applications.
• Hot Water Heating Systems Sales, installation, and service of hot water radiant heating systems including boilers (cast iron through high-efficiency units from Burnham and NTI), radiators, radiant baseboard, and in-floor radiant heating.
• Propane and Natural Gas Piping Installation and tapping of propane and natural gas supply lines serving outdoor fire pits, grills, pool heaters, and other gas appliances for residential and commercial customers.
• Nu Flow Drain Pipe Rehabilitation Trenchless drain pipe rehabilitation for cracked, deteriorated, or tree-root-penetrated sewer mains using the patented Nu Flow epoxy-saturated sleeve and bladder process that creates a pipe within a pipe without excavation, eliminating landscape destruction.

Quantifiable outcome

• 6-11% less energy consumption for well-maintained equipment vs poorly-maintained equipment
• +2 more outcomes

Named customers1 record

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Partnerships

Four partnerships are on record, tiered core.

• LINC Service NetworkcoreChannel Partner/ Reseller/ Distributor · 1 January 1992Became a LINC Service Contractor franchise holder in 1992, allowing the company to provide cost-effective Environmental Maintenance Agreements to building and business owners. LINC transformed their approach to service and provided tools to take personal responsibility for maintained systems. Fargo franchise purchased in December 1992. $1,000,000 maintenance base milestone reached in 2004.
• TranecoreChannel Partner/ Reseller/ DistributorProud Trane dealer for decades. Certified as Trane Comfort Specialist, meeting stringent standards for installation, service, customer satisfaction, and employee training. Offering wide variety of Trane energy-efficient air conditioning units, furnaces, thermostats, and product catalog.
• Mitsubishi ElectriccoreChannel Partner/ Reseller/ DistributorDealer for Mitsubishi mini-split heating and cooling solutions. Installation and service of Mitsubishi cooling and heating systems for residential and commercial applications.
• Nu FlowcoreTechnology or IntegrationNu Flow pipe repair technology provider. Patented epoxy saturated sleeve and bladder process creates pipe within pipe for trenchless drain rehabilitation. Company performs this service throughout North Dakota state.

Scale indicators5 records

Recent moves4 records

Expansion highlights5 records

Broad incumbents

• Roto-Rooter: National plumbing and drain service franchise with strong residential brand recognition. Overlaps with H.A. Thompson's plumbing, sewer/drain, and pipe relining services, though Roto-Rooter operates at national scale and is more focused on drain cleaning than HVAC.
• Watsco: Largest U.S. distributor of HVAC equipment, serving independent dealers and contractors. Compares as an upstream peer to H.A. Thompson's dealer business given Trane, Carrier, and other OEM relationships.
• Lennox International: National HVAC equipment manufacturer and dealer-network operator. Compares to H.A. Thompson at the equipment and dealer-network layer where they overlap through Carrier-style OEM partnerships.
• ServiceMaster Brands: National home services franchisor with HVAC, plumbing, and restoration brands. Overlaps with H.A. Thompson in residential HVAC/plumbing service delivery and franchise-style maintenance programs (analogous to LINC).
• ARS / Rescue Rooter (American Residential Services): National residential HVAC, plumbing, and electrical services company with branch network. Comparable to H.A. Thompson in residential HVAC + plumbing service model but at substantially larger geographic scale.
• Carrier Global: Major HVAC OEM with dealer network and growing direct-to-consumer service channels. Comparable as the equipment and broader HVAC ecosystem peer to H.A. Thompson's Carrier-dealer installation business.

Direct peers

• Horizon Services: Regional residential HVAC, plumbing, and electrical services provider in the Mid-Atlantic. Closely comparable to H.A. Thompson in offering integrated HVAC + plumbing + service contracts for residential customers under a regional brand.
• Brothers Plumbing, Heating & Electric: Multi-trade residential service company offering plumbing, heating, cooling, and electrical across a regional Midwest footprint. Mirrors H.A. Thompson's combined residential HVAC + plumbing service model with maintenance contracts.

Emerging players

• HomeServe: Subscription-based home repair and HVAC/plumbing service provider. Compares to H.A. Thompson's recurring residential maintenance contracts as a more tech-enabled, nationally scaled version of the same subscription model.

Regional players

• Midwest Mechanical Solutions: Regional commercial mechanical contractor in the Midwest providing HVAC, plumbing, and design/build services. Comparable to H.A. Thompson's commercial mechanical construction, design/build, and prefab business at a similar regional scale.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about H. A. Thompson & Sons