What ThermaFlo does

ThermaFlo Incorporated is a privately held, family-managed manufacturer of engineered steam and heat transfer systems, founded in 1986 and headquartered in Newberry, South Carolina. The company designs and builds turnkey packaged equipment, including steam-fired domestic water heaters (TH-750V, TH-500VX Vacuflo, TH-500ZX Zero Flash, Plate Pak), clean steam generators (THCS-V and THCS-H), shell-and-tube heat exchangers, condensate return pumps, steam specialty products, and electronic control valves, all backed by ASME and UL certifications and an in-house live fire testing capability. Proprietary technologies such as the Zero Flash System, Vacuflo closed-loop heat transfer, the JVV Segmented V Control Valve with 300:1 turndown, and the EC-1000 BACnet/Modbus touch screen controller underpin claimed efficiency gains of up to 40% over conventional installations.

ThermaFlo generates revenue primarily through hardware sales of factory-tested, fully packaged systems, supplemented by engineering services (applications engineering, factory authorized testing, startup and commissioning, 24/7 troubleshooting), replacement parts, and paid training programs at its 5,000 sq. ft. Training and Development Center. Pricing is opaque and quote-based, with quotations routed through a nationwide network of approximately 29 manufacturers' representatives who handle sizing, sales, and local customer support. The company serves three primary verticals: medical/healthcare facilities (clean steam for humidification and sterilization), higher education (campus steam systems and domestic hot water), and industrial manufacturing (process steam and heat transfer), with documented case studies spanning universities, hospitals, and government installations.

The business is operated without external institutional investors, parent companies, or disclosed funding rounds. Distribution is exclusively indirect via the rep channel, and growth is enabled through product line expansion (notably the 2020-era introduction of Zero Flash, Vacuflo, Clean Steam Generators, and the EC-1000 controller) and ecosystem investment in training and field engineering services rather than through acquisition or geographic expansion.

Name

ThermaFlo

Legal name

ThermaFlo Incorporated

Website

https://thermafloengineering.com

Company type

Private

Founded year

1986

Operating status

Operating

Headcount range

11–50 employees

Short description

ThermaFlo is a family-owned US manufacturer, founded in 1986, of engineered steam-fired water heaters, clean steam generators, condensate return systems, and electronic control valves sold to healthcare, higher education, and industrial customers through a nationwide manufacturers' representative network.

Ownership category

akta.pro rank

Product category

Industrial Steam and Heat Transfer Equipment

NAICS

Power Boiler and Heat Exchanger Manufacturing (33241), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Pump and Compressor Manufacturing (33391)

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

Heat Transfer Equipment (Heat Exchangers, Boilers, Condensers) (IMAHAEAC)

akta.pro secondary industries

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC), Pump & Compressor Packages (Skids, Booster Sets) (IMAHANAG)

Keywords

• Steam-fired water heaters
• Clean steam generators
• Condensate return systems
• Heat transfer equipment
• Industrial steam systems

Headquarters

HQ city

Newberry

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Equipment Manufacturing: ThermaFlo manufactures and sells precision-built steam, fluid, heat transfer, and control products. Products include water heaters (TH-750V, TH-500ZX, TH-500VX), clean steam generators, condensate return pumps, steam specialty products (traps, separators, strainers, valves), shell and tube heat exchangers, and control valves. All products are factory packaged, tested, and shipped ready for installation.
2. Engineering and Technical Services: Services include applications engineering (system sizing, hookup drawings, calculations), factory authorized live fire testing, startup and commissioning, troubleshooting (24/7 support), and training programs at their Training & Development Center in Newberry, SC.
3. Replacement Parts and Components: Supply of replacement tube bundles (U-tube and standard configurations) for existing equipment, as well as accessories and components for steam systems.

Go-to-market motion2 records

Distribution channels1 record

Marketing channels7 records

Core offering

ThermaFlo manufactures and sells precision-engineered, turnkey steam and heat transfer systems including steam-fired water heaters (TH-750V, TH-500ZX Zero Flash, TH-500VX Vacuflo, Plate Pak), clean steam generators, shell and tube heat exchangers, condensate return pumps, steam specialty products (traps, separators, strainers, safety valves), and electronic control valves and regulators. Products are factory packaged, live-fire tested at the onsite Steam Energy Plant, and shipped ready for installation, supported by applications engineering, startup and commissioning, and hands-on training.

Product overview

ThermaFlo is a manufacturer of turnkey steam and heat transfer systems founded in 1986, offering a comprehensive portfolio of precision-engineered products designed to work as integrated solutions. The core product family includes water heaters (TH-750V Steam Fired Domestic, TH-500VX Vacuflo, TH-500ZX Zero Flash, and Plate Pak Heater), Clean Steam Generators (THCS-V Vertical and THCS-H Horizontal configurations), Steam Specialty Products (steam traps, separators, regulators, and accessories), Control Valves and Regulators (JVV V-Ball, Model 3010, PTP valves), and Condensate Return Pumps (pressure-operated and electric). Supporting these products are the EC-1000 Touch Screen Control Panel with BACnet connectivity, a Training and Demonstration Center, and engineering services including applications engineering, factory testing, startup/commissioning, and troubleshooting. The product line is unified by shared technologies including JVV Segmented V electronic control valves with 300:1 turndown, EC1000 electronic controllers with BACnet/Modbus interfaces, and ASME-certified fabrication across the portfolio.

Differentiator

Problem solved

Functional benefit

Products and services

• TH-750V Steam Fired Domestic Water Heater High-efficiency steam-fired water heater designed for domestic hot water applications, featuring JVV Segmented V electronic control valve with 300:1 turndown, condensate subcooling, ASME Code stamped 316L shell, and EC1000 touchscreen controller option; designed for 50-year service life.
• TH-500ZX Zero Flash Water Heater Steam-fired water heater that accepts up to 150 psig steam and eliminates all flash steam while subcooling condensate; features unique inner baffle and cross flow design with JVV electronic control valve controlling both temperature and steam pressure, saving up to 40% over conventional installations.
• TH-500VX Vacuflo Water Heater Steam-fired water heater that accepts up to 150 psig steam and provides a no-vent-to-atmosphere heat transfer system using vacuum pressure control, eliminating large steam pressure reducing valve stations with up to 40% installation savings; features JVV Segmented V electronic control valve and EC1000 controller with BACnet interface.
• Plate Pak Heater Complete plate and frame heat exchanger package system for domestic water, building heat, and process applications, featuring V-Ball Control Valve with 100:1 flow turn, EC-800 electronic control system, Modbus communication, and ASME Code-rated 150 psi construction in single/double wall designs.
• THCS-V Vertical Clean Steam Generator Vertical clean steam generator producing high-quality, dry saturated steam on demand for applications requiring steam purity including humidification, pharmaceutical processing, sterilization, and food production; built as a factory-tested, fully packaged system with precision controls.
• THCS-H Horizontal Clean Steam Generator Horizontal clean steam generator producing high-quality, dry saturated steam on demand for critical applications; factory-tested, fully packaged system with rugged construction and precision controls for industrial, healthcare, and processing applications.
• Steam Specialty Products Comprehensive suite of engineered steam system components including ball float, inverted bucket, thermodynamic, and float & thermostatic steam traps, regulators, centrifugal steam separators, strainers, filters, safety valves, ASME-coded flash recovery tanks (HFT/VFT), self-acting condensate coolers, and heat exchanger U-tube bundles.
• Steam and Process Control Valves High-performance valves and regulators including JVV V Series Electronic V-Ball and JVV-V Electronic Segmented V Control Valve with up to 300:1 turndown range, Model 3010 P and T Series pilot-operated pressure control valves, and PTP balanced trim steam regulating valve, engineered for accurate modulation, reliable shutoff, and consistent pressure and temperature control.
• Condensate Return Pumps Reliable condensate recovery solutions including non-electric pressure-operated pumps using steam/air/gas motive force (available in ultra-low profile and high-capacity designs with stainless internals and NEMA 4/7/9/4X ratings for hazardous locations), S Series and V Series electric condensate return pumps (simplex/duplex), and EC-1000 touchscreen control panel for advanced monitoring.
• Shell and Tube Heat Exchangers ASME Code Section VIII stamped U-tube shell and tube heat exchangers in sizes 4" to 30", available in carbon steel, 316 stainless steel, cupro-nickel, bronze, and copper, with single or double-wall inner tube bundle construction for diverse pressure, temperature, and service requirements.
• Applications Engineering Services Technical consulting with over 40 years of steam, heat transfer, and process controls expertise, providing hookup drawings, system calculations, and sizing assistance for finding optimal solutions, delivered to reps, engineers, and facility managers.
• Factory Authorized Testing Full live fire testing on every system after manufacturing using the onsite Steam Energy Plant, simulating real-world conditions to verify performance, calibrate electronic controllers, and ensure field-ready operation.
• Startup and Commissioning Factory-trained Field Commissioning Group provides expert startup assistance and hands-on training, including complete commissioning documentation with detailed performance records.
• Training and Development Center Programs 5,000 sq. ft. Training and Demonstration Center in Newberry, SC featuring a 5,000 lbs/hr, 125 psig live steam system; offers 1- and 2-day training programs on steam/hot water systems, boiler room design, facilities management, and high-efficiency steam to reps, engineers, and facility managers.

Quantifiable outcome

• 10-18% steam usage efficiency improvement over other manufacturers' heaters (TH-750V)
• +6 more outcomes

Named customers3 records

Segments3 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration3 records

Feature6 records

Partnerships

One partnership is on record.

• Ametek US GaugecoreTechnology or Integration · 1 January 1984Long-standing partnership spanning over 40 years. ThermaFlo installs Ametek US Gauge pressure gauges, diaphragm seals, bimetallic thermometers, and thermowells on all manufactured equipment. Ametek is one of the largest suppliers of pressure gauges in the world, serving industries including refining, chemical manufacturing, mining, power generation, HVAC, and OEM manufacturing.

Scale indicators7 records

Recent moves7 records

Expansion highlights5 records

Broad incumbents

• Spirax Sarco: Global leader in steam and thermal energy management offering steam traps, control valves, condensate recovery, and heat transfer equipment. Overlaps with ThermaFlo's core steam specialties and condensate return lines, but at much greater scale and with a broader industrial/institutional portfolio.
• Velan: Manufacturer of industrial valves including severe-service and control valves for steam, power, and process applications. Overlaps with ThermaFlo's JVV Segmented V and process control valve portfolio, but with a far broader industrial customer base and global scale.
• Fulton Companies: Established manufacturer of steam boilers, hot water boilers, and thermal fluid heaters serving industrial, commercial, and institutional markets. Comparable in ASME-certified steam equipment manufacturing, with a broader product range and global footprint.
• Cleaver-Brooks: Large manufacturer of boilers, burners, and integrated boiler room / heat transfer packages serving healthcare, education, and industrial customers. Comparable in target segments and ASME-certified equipment scope; considerably larger and broader than ThermaFlo.
• Burnham Holdings: Parent of multiple heating brands manufacturing residential, commercial, and industrial boilers and water heating equipment. Comparable in steam/hydronic heating equipment manufacturing and ASME-certified product offerings, with much broader scale and distribution.

Direct peers

• Watson McDaniel: Specialty manufacturer of steam traps, condensate return equipment, pressure reducing valves, and related steam system components. Overlaps directly with ThermaFlo's Steam Specialty Products line and shares a rep-driven distribution model.
• Heat Transfer Products (HTP): Manufacturer of high-efficiency boilers and water heaters for residential and light commercial markets, with overlap into commercial/industrial water heating and heat transfer. Comparable in product engineering focus and efficiency-driven differentiation.
• Laars Heating Systems: Manufacturer of commercial and residential water heating and hydronic heating equipment, including boiler-fired and steam-fired systems for institutional customers. Comparable in target verticals (education, healthcare) and water heater product line.
• Patterson-Kelley: Manufacturer of commercial and industrial boilers, water heaters, and heat transfer equipment for institutional and industrial customers. Directly comparable in product family (steam-fired water heaters, heat exchangers) and target verticals (healthcare, education).
• Armstrong International: Closely comparable specialty manufacturer of steam, air, and hot water systems — including steam traps, condensate return equipment, heat transfer packages, and control valves. Armstrong sells through rep networks to industrial, healthcare, and institutional customers, overlapping directly with ThermaFlo's product portfolio and verticals.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/thermaflo-incorporated

Compliance6 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 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 ThermaFlo