Isotherm, Inc.

What Isotherm, Inc. does

Isotherm, Inc. is a privately held custom manufacturer of specialized heat exchangers, pressure vessels, and packaged industrial systems headquartered in Arlington, Texas, with a regional office in Lima, Peru. Founded in 1999, the company employs approximately 50 people, including professionals with doctoral degrees in engineering focused on enhanced heat transfer, and is led by founder Dr. Zahid Ayub (FELLOW ASME, FELLOW ASHRAE). The firm designs and fabricates shell-and-tube, plate-and-frame (gasketed, semi-welded, brazed), and shell-and-plate heat exchangers across materials including carbon steel, stainless steel 304/316, titanium, copper alloys, duplex steel, and Alloy 20, plus pressure vessels per ASME code and skid-based packaged systems such as ORC, CNG/RNG, and gas compression units.

The product portfolio is anchored by two proprietary patented platforms: the MaximICE Orbital Rod Evaporator (ORE) ice slurry system, which uses whip rod technology to generate microscopic ice particles in suspension and is offered in capacities from 3 to 520 TR across eight models, and the SX ultra-low charge shell-side direct expansion chiller, which reduces ammonia charge from approximately 1,500 lbs in conventional flooded evaporators to roughly 50 lbs. The company also produces titanium shell-and-tube exchangers for marine RSW applications, ultra-low charge red water re-chillers for poultry processing, and high-pressure CO2 vessels, and operates the Natural Fluids Refrigeration Center (NFRC) research collaboration with GIK Institute in Pakistan.

Isotherm generates revenue primarily through one-time custom manufacturing contracts and service/repair work, with quote-based pricing on engineered-to-order equipment. Go-to-market is direct enterprise field sales targeting industrial clients across industrial refrigeration, marine, oil and gas, chemical/petrochemical, renewable energy/RNG, district heating, and data center cooling, supplemented by event presence at IIAR and other industry conferences. International reach is extended through three exclusive ORE technology licensees in China (Jiangsu Greensman), South Korea (Refa Engineering), and Japan (Iceman Corporation), plus a regional representative (Kara Consulting) covering Belgium, the Netherlands, and Iraq. The company holds ASME U Stamp, National Board Repair R Stamp, ISO 9001:2015, DNV mPQA, Bureau Veritas, Canadian TSSA, Brazilian NR-13, and New Zealand PECPRO certifications, enabling specification into marine, refinery, and international pressure-equipment projects.

Name

Isotherm, Inc.

Legal name

Isotherm, Inc.

Website

https://iso-therm.com

Company type

Private

Founded year

1999

Operating status

Operating

Headcount range

11–50 employees

Short description

Isotherm is a privately held, Arlington, Texas-based custom manufacturer founded in 1999 (~50 employees) specializing in engineered heat exchangers, pressure vessels, and packaged systems for industrial refrigeration, marine, oil and gas, renewables, and process industries worldwide.

Ownership category

akta.pro rank

Product category

Industrial Heat Exchangers

NAICS

Power Boiler and Heat Exchanger Manufacturing (332410), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

Heat Exchangers & Thermal Transfer Equipment (IMAHAKAC)

Keywords

• Custom heat exchangers
• Industrial pressure vessels
• Ammonia refrigeration systems
• Shell and tube exchangers
• Ice slurry systems

Headquarters

HQ city

Arlington

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. Custom Heat Exchanger Manufacturing: Design and fabrication of custom heat exchangers including shell and tube, plate and frame, shell and plate types. Products are constructed with various materials including carbon steel, stainless steel 304 & 316, titanium, copper alloys, duplex steel, and Alloy 20.
2. Pressure Vessel Manufacturing: Custom fabrication of pressure vessels, process tanks, storage tanks, and reactor vessels per ASME code requirements.
3. Packaged Systems: Pre-assembled skid-based systems including liquid recirculator packages, ORC packages, CNG packages, waste gas process and compression skids, and customized special-application packaged units.
4. Service and Repair: Service work including re-tubing and repair for related products whether built by Isotherm or other manufacturers. Field services for repair and alterations per ASME code.

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Isotherm, Inc. is a custom manufacturer of specialized heat exchangers (shell and tube, plate and frame, shell and plate), ASME-coded pressure vessels, and skid-based packaged systems for industrial refrigeration, marine, oil and gas, chemical/petrochemical, and renewable energy applications. The company also provides field service, re-tubing, and repair work for its own and other manufacturers' equipment, and licenses its proprietary MaximICE ORE ice slurry technology internationally.

Product overview

Isotherm, Inc. is a custom manufacturer of specialized heat exchangers, pressure vessels, and packaged systems for industrial applications including refrigeration, oil and gas, marine, chemical/petrochemical, and renewable energy. The product portfolio centers on shell and tube heat exchangers, plate and frame heat exchangers, and shell and plate heat exchangers as core product categories. These are complemented by pressure vessels (high-pressure, low-pressure, accumulators, receivers, recirculators), and packaged systems (ORC packages, CNG/RNG packages, gas compression skids, liquid recirculator packages). The proprietary MaximICE ORE (Orbital Rod Evaporator) system uses patented orbiting whip rod technology for ice slurry generation with models ranging from 3 TR to 520 TR capacity. The innovative SX Chiller product line offers ultra-low charge shell side direct expansion chillers that require dramatically less refrigerant than conventional designs. Specialty products include titanium shell and tube exchangers for marine applications, Red Water Re-Chillers for poultry processing, and thermosyphon oil coolers. The company operates the Natural Fluids Refrigeration Center (NFRC) in collaboration with GIK Institute for applied research on enhanced heat transfer using natural refrigerants. Isotherm holds ASME U Stamp, National Board Repair R Stamp, and ISO 9001:2015 certifications.

Differentiator

Problem solved

Functional benefit

Brands

• MaximICE ORE: Orbital Rod Evaporator ice slurry product line using patented orbiting whip rod technology to create microscopic ice crystals in suspension. Includes models ORE-3, ORE-25, ORE-50, ORE-100, ORE-200, ORE-300, and ORE-400 with capacities ranging from 3 TR to 520 TR.

Products and services

• Shell and Tube Heat Exchangers

Quantifiable outcome

• SX Evaporator at British Columbia rink facility required only 50 lbs of ammonia vs. 1500 lbs in conventional flooded evaporator
• +4 more outcomes

Named customers12 records

Segments6 records

Ideal customer profiles1 record

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Five partnerships are on record, tiered core and minor.

• GIK Institute of Engineering Sciences and TechnologycoreStrategic or Co-development PartnerCollaboration established the Natural Fluids Refrigeration Center (NFRC), a research facility dedicated to providing refrigeration solutions globally. The center conducts applied and fundamental research on thermal-hydraulic characteristics of high-efficiency heat exchangers using natural refrigerants, and provides consultancy and analytical services to industry, academia, and government organizations.
• Jiangsu Greensman Energy Storage Technology Co., Ltd.coreOEM/ Whitelabel/ Licensing PartnerExclusive licensee for ORE (Orbital Rod Evaporator) ice slurry technology in China. Manufactures and distributes MaximICE ORE systems within licensed territory.
• Refa Engineering Co., Ltd.coreOEM/ Whitelabel/ Licensing PartnerExclusive licensee for ORE (Orbital Rod Evaporator) ice slurry technology in South Korea. Manufactures and distributes MaximICE ORE systems within licensed territory.
• Iceman CorporationcoreOEM/ Whitelabel/ Licensing PartnerExclusive licensee for ORE (Orbital Rod Evaporator) ice slurry technology in Japan. Manufactures and distributes MaximICE ORE systems within licensed territory.
• Kara ConsultingminorChannel Partner/ Reseller/ DistributorRegional representative covering Belgium, The Netherlands, and Iraq. Main office located in Kapelle, The Netherlands.

Scale indicators3 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Alfa Laval: Swedish global leader in heat transfer, separation, and fluid handling. Directly comparable as the largest manufacturer of gasketed, brazed, and welded plate heat exchangers and shell-and-tube exchangers serving the same industrial refrigeration, marine, oil & gas, and process industries as Isotherm.
• Kelvion: German-headquartered specialist in plate, shell-and-tube, and finned heat exchangers. Direct competitor across industrial refrigeration, chemical, marine, and oil & gas applications, with similar ASME/TEMA-certified manufacturing capabilities.
• GEA Heat Exchangers: Division of GEA Group focused on plate heat exchangers and hygienic/industrial heat transfer. Overlaps directly with Isotherm's plate-and-frame and shell-and-plate offerings for refrigeration, dairy/brewery, and chemical applications.
• SPX Heat Transfer / SPX Cooling Technologies: Manufactures heat exchangers and cooling equipment for HVAC, industrial refrigeration, and process cooling. Comparable in serving food processing, marine, and oil & gas customers with custom-engineered thermal equipment.
• API Heat Transfer: US-based manufacturer of heat exchangers (shell & tube, plate, air-cooled) for industrial, HVAC, and process markets. Comparable in custom-engineered thermal equipment serving oil & gas, chemical, and power generation.
• HRS Heat Exchangers: UK-based specialist in corrugated tube and plate heat exchangers. Direct peer in food/dairy, beverage, chemical, and renewable energy applications, with similar focus on hygienic and high-efficiency designs.
• SWEP (Dover Corporation): Part of Dover's Engineered Products segment, SWEP is a leading manufacturer of brazed plate heat exchangers for HVAC, refrigeration, and industrial process cooling—overlapping with Isotherm's plate-and-frame portfolio.
• Tranter: Plate heat exchanger manufacturer (now part of Alfa Laval but historically independent). Direct peer in gasketed, welded, and brazed plate exchangers for industrial refrigeration, marine, and process industries.

Broad incumbents

• Xylem: Global water technology company with broad industrial pumps, cooling, and heat transfer capabilities. Comparable as a larger incumbent serving overlapping industrial refrigeration, district heating, and water/cooling applications.
• ITT Inc. Diversified industrial manufacturer with heat transfer, motion, and connect-and-control platforms. Comparable as a broader incumbent with industrial heat exchanger and process equipment offerings in chemical, oil & gas, and energy markets.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/isotherminc

Compliance13 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

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 Isotherm, Inc.