What Heatrex does

Heatrex designs, engineers, and manufactures electric heating and thermal management equipment for commercial HVAC, industrial process, OEM, and rail/transportation markets. Founded in 1959 and headquartered in St. Louis, Missouri, the company operates two vertically integrated manufacturing facilities in Missouri as part of the ASPEQ Heating Group family of brands. Its product portfolio spans HVAC electric duct heaters, unit and comfort heaters, explosion-proof heaters (CSA-certified for Class I and II, Division 1 and 2 hazardous locations), tubular and finned tubular heating elements, electric immersion heaters (screw plug, flange, over-the-side, and explosion-proof variants), enclosure and switchgear heaters, process air heaters, circulation heaters, refrigeration defrost heaters, bolt and flexible heaters, heat trace, and the proprietary TraceFREE Impedance Pipe Heating System that uses low-voltage AC to make the process pipe itself the heating element. The company also supplies control panels, thermostats, and accessories, and provides online engineering calculators and an extensive technical documentation library.

The underlying technology is built around nickel-chromium resistance wire embedded in magnesium-oxide insulation within copper, steel, or alloy sheaths, combined with SCR-based proportional control and CSA/UL-certified safety architectures for hazardous environments. Heatrex generates revenue through hardware sales to OEMs and end users across commercial, industrial, and rail customers in North America and selected international markets; pricing is quote-based with no public list prices. Go-to-market relies on a nationwide independent sales-representative network (with international coverage in Canada, the Philippines, Singapore, and Thailand), supported by an online Rep Locator, a product inquiry form, dedicated replacement-parts ordering, downloadable catalogs and technical documents, and engineering calculators. The company holds ISO 9001:2015 certification, UL listings on multiple product families, and CSA approvals for explosion-proof duct and immersion heaters, which together serve as key qualification gates for OEM platforms and hazardous-process end markets.

Name

Heatrex

Legal name

Heatrex LLC

Website

https://heatrex.com

Company type

Private

Founded year

1959

Operating status

Operating

Headcount range

1–10 employees

Short description

Heatrex designs and manufactures electric heating equipment — including duct heaters, tubular elements, immersion heaters, explosion-proof units, and the proprietary TraceFREE impedance pipe heating system — for commercial, industrial, OEM, and rail customers in North America and abroad.

Ownership category

akta.pro rank

Product category

Electric Heating Equipment Manufacturing

NAICS

Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Heating Equipment (except Warm Air Furnaces) Manufacturing (333414)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Heating Equipment, Except Electric & Warm Air Furnaces (3433)

akta.pro primary industry

HVAC Equipment (Heating, Cooling & Air Handling) (IMAHAKAB)

akta.pro secondary industries

Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF), Boilers, Furnaces & Process Heating Equipment (IMAHAKAD)

Keywords

• Electric heating equipment
• Industrial duct heaters
• Explosion-proof heaters
• Immersion heaters
• Thermal management systems

Headquarters

HQ city

Saint Louis

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Electric Heating Equipment Sales: Heatrex designs, engineers, and manufactures electric heating equipment and controls for Commercial, Industrial, and OEM markets. Products include duct heaters, unit heaters, tubular elements, immersion heaters, circulation heaters, and custom-designed systems. Revenue generated from product sales with prices at fair market value.
2. Replacement Parts and Accessories: Sourcing and sale of replacement parts for existing heating equipment including duct heaters, cooling tower panels, and unit heater series. Replacement parts orders processed via email and local representatives.
3. OEM Custom Solutions: Custom design, engineering, and manufacturing of electric heating equipment and controls for original equipment manufacturers. Nearly 100 years of OEM partnership experience.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Core offering

Heatrex designs, engineers, and manufactures electric heating equipment and controls for Commercial/HVAC, Industrial, and OEM markets. The portfolio includes HVAC electric duct heaters, unit and comfort heaters, explosion-proof heaters, tubular and finned tubular heating elements, electric immersion heaters, switchgear/enclosure heaters, process air heaters, circulation heaters, refrigeration defrost heaters, bolt heaters, and the proprietary TraceFREE impedance pipe heating system. The company sells custom-engineered heating solutions and replacement parts through a nationwide network of independent sales representatives.

Product overview

Heatrex is a manufacturer of highly-engineered electric heating and thermal management technologies for commercial, industrial, and rail applications. The company operates as part of the ASPEQ Heating Group and offers a comprehensive portfolio of electric heating products organized into Commercial/HVAC and Industrial categories. The Commercial/HVAC line includes HVAC Electric Duct Heaters, Unit & Comfort Heaters (featuring sub-products like baseboard convectors, fan-forced heaters, radiant heaters including STS and STT/SST Thin radiant heaters, and forced-air heaters), and Explosion-Proof Heaters for hazardous locations. The Industrial portfolio encompasses Tubular & Finned Tubular Heating Elements, Electric Immersion Heaters (with variants including screw plug, flange, over-the-side, and tank heaters), Enclosure/Switchgear Heaters, Process Air Heaters, Circulation Heaters, Refrigeration Defrost Heaters, Bolt Heaters/Flexible Heaters, and the TraceFREE Impedance Pipe Heating System. Heatrex also provides complementary control panels, thermostats, accessories, and online engineering calculators. The company maintains two manufacturing facilities in Missouri and serves markets throughout North America and abroad.

Differentiator

Problem solved

Functional benefit

Brands

• TraceFREE: TraceFREE Impedance Pipe Heating System - a unique, safe, and proven method for electric pipeline tracing and heating where the pipe becomes the heating element when low AC voltage is applied.

Products and services

• HVAC Electric Duct Heaters Electric duct heaters ranging from standard models to custom-designed comprehensive systems, intended for commercial HVAC applications in non-hazardous building environments.
• Unit & Comfort Heaters Heating solutions for non-hazardous and non-corrosive environments including baseboard convectors, fan-forced units, radiant heaters, and forced-air variants for commercial comfort heating.
• Explosion-Proof Heaters Specialized heaters certified for hazardous locations where flammable gases, vapors, dusts, or ignitable fibers are present, including CSA Approved explosion-proof duct heaters rated up to 1000 kW at 600 volts.
• Tubular & Finned Tubular Heating Elements Highly efficient heating elements using nickel-chromium resistance wire embedded in magnesium-oxide powder within copper, steel, or alloy sheaths, providing heat directly to air, liquids, and metals.
• Electric Immersion Heaters Immersion heaters in screw plug, flange, over-the-side, and explosion-proof variants for heating liquids in tanks and vessels, including cooling tower, deep tank, pipe insert, railroad tank car, and storage tank configurations.
• Enclosure Heaters / Switchgear Heaters Space heaters designed to maintain temperature and minimize moisture inside electrical and mechanical equipment enclosures, replacing less-efficient strip heaters.
• Process Air Heaters Industrial heating systems with ON/OFF or fully proportional SCR control, available with INDEECO Controls electronic sequencers and PID temperature controllers for precise process air temperature control.
• Circulation Heaters Heaters designed for circulating heated fluids through closed-loop systems with accompanying control panels for industrial process applications.
• Refrigeration Defrost Heaters Defrost heating solutions for transport refrigeration units and walk-in cooling units.
• Bolt Heaters / Flexible Heaters Insertion-type heaters for preheating large hollow bolts, studs, die blocks, and platens where concentrated heat is critical for expansion in pressure equipment manufacturing and servicing.
• TraceFREE Impedance Pipe Heating System Proprietary low-voltage impedance heating system for electric pipeline tracing and heating where the pipe itself becomes the heating element when low AC voltage is applied via a custom-designed transformer, providing uniform heating without hot spots from below freezing to 1600°F.
• Electric Immersion Heater Control Panels Pre-engineered control panels including contactor, SCR, and cooling tower control options for managing electric immersion heater operations.
• Explosion-Proof Duct Heaters (220 and 227 Series) CSA Approved duct heaters for hazardous locations, including the 220 Series for Class I Division 2 and the 227 Series for Class I & II, Division 1 & 2 atmospheres, rated up to 1000 kW at 600 volts.
• STS Radiant Heater Zero-maintenance radiant heater that converts 95% of applied energy into useful heat using IR-C waveband elements, with no bulbs to replace and no reflectors to clean; available in ceiling or wall mount configurations for warehouses, docks, and workshops.
• STT (SST Thin) Radiant Heater Slim modern radiant heater design that converts 95% of applied energy to useful heat with no bulbs or moving parts, ideal for restaurants, outdoor patios, and commercial comfort heating.
• AS Series Radiant Ceiling Panels Ceiling-mounted radiant heating panels with no moving parts and maintenance-free operation, designed to offset heat loss through exterior glass in commercial spaces.

Quantifiable outcome

• TraceFREE Impedance heating converts pipe into heating element, eliminating burnouts and failures associated with resistance tapes and cables
• +2 more outcomes

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• ASPEQ Heating GroupcoreStrategic or Co-development PartnerHeatrex is part of the ASPEQ Heating Group family of brands. ASPEQ Heating Group, headquartered in St. Louis, Missouri, designs and manufactures a complete line of highly-engineered electric heating and thermal management equipment and controls across diverse commercial, industrial, transportation and marine markets. ASPEQ operates two manufacturing facilities in Missouri and is vertically integrated.

Scale indicators4 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Watlow: Watlow designs and manufactures industrial electric heaters, including tubular heaters, immersion heaters, circulation heaters, and heat trace systems—overlapping nearly all of Heatrex's industrial categories with comparable custom-engineering and OEM focus.
• Tempco Electric Heater Corporation: Tempco designs and manufactures electric heating elements, immersion heaters, band heaters, and circulation heaters for industrial OEM customers—closely comparable to Heatrex's industrial heating product mix and customer base.
• Vulcan Electric: Vulcan Electric manufactures tubular heating elements, immersion heaters, and process heaters for industrial applications—a comparable niche manufacturer in the same electric heating space as Heatrex.
• Indeeco: Indeeco is a sister brand under ASPEQ Heating Group alongside Heatrex, manufacturing commercial and industrial electric heating including duct heaters, heat trace, and process heaters—same parent, overlapping product lines, and shared distribution channels.
• Tutco Heating Solutions Group: Tutco manufactures electric heating elements, open coil heaters, duct heaters, and tubular heating elements for industrial and OEM customers—directly comparable product portfolio to Heatrex's tubular elements and duct heater lines.
• Chromalox: Chromalox is a global manufacturer of electric heat and control products, including duct heaters, immersion heaters, circulation heaters, and process heating—directly overlapping Heatrex's industrial and commercial portfolio with similar OEM and end-user customers.
• Durex Industries: Durex Industries manufactures electric heating elements, radiant heaters, and tubular heaters for industrial and OEM applications—comparable in product mix to Heatrex's tubular elements and radiant heater offerings.
• BriskHeat: BriskHeat specializes in heat trace, pipe heating, and industrial electric heating products including impedance and resistance heating—directly comparable to Heatrex's TraceFREE impedance heating and heat trace offerings.
• Backer Hotwatt: Backer Hotwatt manufactures tubular heating elements, immersion heaters, and circulation heaters for industrial and OEM markets—a focused, comparable niche manufacturer overlapping Heatrex's core element business.
• Heatron: Heatron designs and manufactures custom heating elements, heat trace, and thermal management solutions for industrial OEMs—overlapping Heatrex's custom OEM heating and heat trace capabilities.

Market position

Strengths1 record

Weaknesses1 record

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/HeatrexInc

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

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 Heatrex