Johnson Gas Appliance Company

What Johnson Gas Appliance Company does

Johnson Gas Appliance Company is a privately held, Iowa-based industrial equipment manufacturer founded in 1901 that designs and builds gas-fired industrial furnaces, burners, and related heating products. It operates five distinct divisions — Industrial Furnace, Mendota Hearth (luxury gas fireplaces, inserts, and stoves), St. Croix (pellet and multi-fuel stoves), Net Zero Fireplaces, Concrete Curing / Johnson Curing (steam curing systems for concrete block, pipe, precast, and prestressed products), and Johnson CO2 (industrial and greenhouse CO2 generators) — supported by a multi-SKU replacement parts catalog and a Factory Replacement Service that reconditions and relines Johnson furnaces.

The Industrial Furnace Division produces a comprehensive line covering heat treating, metal melting, soldering, forging, case hardening, tempering, and specialty applications, including bench soldering furnaces that have been in continuous production since 1901. The Industrial Burners line spans packaged power gas burners, Bunsen burners (with patented Auto-Blast technology featuring a proprietary curve-shaped hood), atmospheric ring burners, drilled pipe burners, and adjustable power burners up to 800,000 BTU/hr. The Concrete Curing division's steam systems are reported to cure more than 10 million cement blocks and tons of concrete pipe daily across an installed base that represents the company's most volume-anchored business. The supporting catalog includes 222+ replacement parts across blowers, thermostats, safety systems, mixers and valves, venturis, nozzles, and torch tips.

Johnson sells almost exclusively through a direct sales model — no e-commerce channel is visible — with a single named industrial sales contact handling furnace, burner, and Factory Replacement Service inquiries via phone and email. Revenue is generated through three streams: industrial furnace and burner hardware sales, replacement parts, and the recurring-revenue Factory Replacement Service. The customer base spans industrial metalworking manufacturers (primary), educational institutions with technical training programs, individual artists and blacksmiths, concrete products manufacturers, and greenhouse operators. The company has 51–100 employees, no disclosed external investors or funding, and no parent company.

Name

Johnson Gas Appliance Company

Legal name

Johnson Gas Appliance Co.

Website

https://johnsongas.com

Company type

Private

Founded year

1901

Operating status

Operating

Headcount range

51–100 employees

Short description

Johnson Gas Appliance Company manufactures industrial furnaces, burners, and related gas heating equipment for industrial manufacturers, educational institutions, concrete producers, and consumers through multiple divisions including Industrial Furnaces, Mendota Hearth, and Johnson Curing.

Ownership category

akta.pro rank

Product category

Industrial Heating Equipment Manufacturing

NAICS

Industrial Process Furnace and Oven Manufacturing (333994), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Industrial Gas Manufacturing (325120)

SIC

Industrial Process Furnaces & Ovens (3567), Heating Equip, Except Elec & Warm Air; & Plumbing Fixtures (3430)

akta.pro primary industry

Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

Keywords

• Industrial furnaces
• Gas burners
• Steam curing systems
• Metal melting furnaces
• Heat treating equipment

Headquarters

HQ city

Cedar Rapids

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Personnel, Operations, Marketing or Sales

Revenue model

1. Industrial Furnaces and Burners: Sale of industrial furnaces including heat treating, metal melting, soldering, forge, crucible, and specialty furnaces. Also includes industrial burners (power burners, bunsen burners, atmospheric ring burners, drilled pipe burners, adjustable power burners).
2. Factory Replacement Service: Factory replacement service for furnace reconditioning and relining. Customers order replacement bodies that connect to existing Johnson blower equipment, extending furnace life at minimal investment.
3. Replacement Parts: Sale of replacement parts including burners, valves, solenoids, thermocouples, venturis, orifices, manifolds, motors, safety controls, and temperature control equipment.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels1 record

Core offering

Johnson Gas Appliance Company manufactures industrial gas furnaces and burners for heat treating, metal melting, soldering, and forging, plus steam curing systems for concrete products, CO2 generators, and gas fireplaces. It also provides replacement parts and factory reconditioning services.

Product overview

Johnson Gas Appliance Company is a manufacturing company with a diversified portfolio of industrial and consumer heating products organized into multiple divisions. The Industrial Furnace Division produces a comprehensive line of heat treating, metal melting, soldering, forging, and specialty furnaces for industry and educational institutions, complemented by a full range of industrial gas burners including Bunsen, atmospheric ring, drilled pipe, and adjustable power burners. The Concrete Curing Division provides Steam Curing Systems for precast concrete products, while the Mendota Hearth Division offers luxury gas fireplaces and inserts. Additional divisions include CO2 Generators for industrial and residential use, and St. Croix pellet/multi-fuel stoves. The company also provides factory replacement services for furnace maintenance and offers various supporting components such as blowers, thermostats, safety systems, and mixers/valves. With over 100 years in gas technologies, the company maintains operations in Iowa.

Differentiator

Problem solved

Functional benefit

Brands

• Mendota Hearth: Luxury gas fireplaces, gas fireplace inserts and stoves
• St. Croix
• Net Zero Fireplaces
• Johnson Curing
• Johnson CO2

Products and services

• Industrial Furnace Division Manufactures heat treating, metal melting and soldering furnaces for industry and school shops, including Hi-Speed Heat Treating, Assaying, Atmospheric Oven, Multi-Purpose, Pot, Soft Metal Melting, Advanced Melting, Forge, Crucible, Ceramic Shell Burn-Out, Bench Soldering, and Custom Furnaces.
• Industrial Burners Complete line of gas burners including Packaged Power Gas Burners, Bunsen Burners, Drilled Pipe Burners, Atmospheric Ring Burners, and Adjustable Power Burners for various industrial heating applications.
• Bench Soldering Furnaces Rugged and versatile bench furnaces popular for industry and schools since 1901. Models No. 101, 112, 108, and 118 for heat treating, tempering, case hardening, forging and soft metal melting; No. 118 includes a cast iron melting pot.
• Atmospheric Ring Burners Rugged burners consisting of independently controlled concentric ring burners (single to quadruple), constructed of smooth grey iron castings with two rows of raised gas ports. Models include 40A, 40AB, 40ABC, 60B-E and combined configurations.
• Adjustable Power Burners Rugged, powerful burners for pre-heating, forging, blast type immersion tube heating and ceramic kilns, equipped with Johnson blowers, continuous duty motors and brass shut-off valves. Models 321, 342, 323, 343 ranging up to 800,000 BTU/hr.
• Steam Curing Systems (Concrete Curing Division / Johnson Curing) Steam Curing Systems for concrete block, pipe, precast and prestressed products. Over 10 million cement blocks and tons of concrete pipe are cured every day with Johnson steam curing systems.
• Mendota Hearth Division Luxury gas fireplaces, gas fireplace inserts and stoves for residential consumers.
• CO2 Generator Division (Johnson CO2) CO2 Generators for industry and residential applications, including greenhouse CO2 enrichment.
• St. Croix Pellet Stoves and Multi-Fuel Stoves.
• Net Zero Fireplaces Fireplaces designed as a pathway to Net Zero Energy.
• Factory Replacement Service Reconditioning and relining service for Johnson furnaces. Replacement bodies connect easily to existing Johnson blower equipment, restoring furnace efficiency and extending equipment life at minimal investment.
• Additional Products / Replacement Parts Supporting products and replacement parts including Blowers, Thermostats, Safety Systems, Safety Control Equipment, Automatic Hand Torches, Mixers & Valves, Venturi Tubes, Nozzles, Torch Tips, Greenhouse CO2 Generator, and Make Your Own Kiln kits.

Quantifiable outcome

• Over 10 million cement blocks cured daily
• +1 more outcomes

Segments5 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature1 record

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• Surface Combustion: U.S. manufacturer of industrial heat treating furnaces and atmosphere generators serving metals, aerospace, and automotive customers. Directly comparable to Johnson's Industrial Furnace Division in product category, customer base (industrial heat treaters), and gas-fired technology focus.
• Ipsen: Manufacturer of vacuum and atmosphere heat treatment furnaces for aerospace, medical, and industrial customers. Comparable product category (industrial heat treating furnaces) and customer overlap with Johnson's industrial furnace business, but operates at much larger scale.
• Lucifer Furnaces: U.S. maker of heat treating, melting, and laboratory furnaces for industrial and educational use. Overlaps directly with Johnson's bench and industrial furnace lines, including the school-shop and small-shop customer segment.
• Hearthstone (Hearth & Home Technologies): Manufacturer of gas, wood, and pellet stoves and fireplaces for the residential hearth market. Directly comparable to Johnson's Mendota Hearth, St. Croix, and Net Zero Fireplace sub-brands serving the same builder and homeowner channels.
• Selas Heat Technology (Maxon/Eclipse lineage): Long-standing U.S. manufacturer of industrial gas burners and combustion systems for process heating. Highly comparable to Johnson's industrial burner portfolio (power burners, ring burners, drilled pipe burners) in product and target market.
• Grieve Corporation: Manufacturer of industrial ovens and furnaces for heat processing, curing, and drying. Comparable in product category (industrial thermal processing equipment) and customer overlap with Johnson's industrial and specialty furnace offerings.
• North American Manufacturing: U.S. manufacturer of industrial burners and combustion equipment for process heating applications. Directly comparable to Johnson's industrial burner business in product technology, target market, and sales approach.
• SECO/WARWICK: Global industrial furnace and heat treatment equipment manufacturer serving metallurgy, aerospace, and aluminum markets. Comparable to Johnson in industrial furnace design, though with broader scale and international footprint.

Broad incumbents

• Fives Group: Global industrial engineering group with a significant thermal and combustion equipment portfolio serving metals, cement, and energy customers. Operates in the same industrial furnace/burner space as Johnson but at much broader scale and scope.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 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 Johnson Gas Appliance Company