MultiTherm

What MultiTherm does

MultiTherm LLC is a Pennsylvania-based manufacturer and supplier of organic, petroleum-based heat transfer fluids and complementary thermal equipment, operating continuously since 1977 from its headquarters in Pottstown, PA. The company's core technology is a portfolio of eight fluid formulations — PG-1, OG-1, 503, IG-4, IG-1, FF-1, PSC-Plus, and 550 — engineered for liquid-phase heating and cooling across a 10°F to 660°F envelope, with select grades NSF HT-1 certified and Kosher certified for incidental food contact. Supporting the fluid base, MultiTherm sells hot oil filtration systems rated to 750°F, an FF-1 flushing fluid and PSC-Plus system cleaner, and through a sister company (MultiTherm Coils) distributes industrial coils, shell-and-tube and brazed plate heat exchangers, and replacement tube bundles.

The company monetizes through one-time consumable fluid sales across packaging tiers from 5-gallon pails to 2,500+ gallon bulk tanker loads, hardware sales of filtration equipment and coils, and professional services billed at disclosed hourly rates ($150/hour normal, with 1.5x–2.0x overtime multipliers and separate travel-time charges). Service revenue is generated from fluid analysis (TAN, viscosity, distillation), on-site cleaning, troubleshooting, design support, and training programs. Customers span 35 process industries including food processing, chemical processing, plastics, HVAC, asphalt/roofing, die casting, and paper/particle board. Go-to-market is direct sales via phone, toll-free, and fax with field sales representatives providing technical consultation; marketing leverages trade publications, recurring trade show participation (ILTA, Enfinite, World of Asphalt), and industry association memberships (NAPA, TXAPA, Enfinite).

MultiTherm is a privately held LLC with no disclosed institutional investors, parent company, or M&A history. Pricing on fluid SKUs is quote-based and not publicly disclosed. The company operates under the DBA "MultiTherm Fluids" alongside its core MultiTherm brand and the MultiTherm Coils sister brand, and holds NSF HT-1 and Kosher certifications as its primary regulatory differentiators.

Name

MultiTherm

Legal name

MultiTherm LLC

Website

https://multitherm.com

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

11–50 employees

Short description

MultiTherm LLC, founded in 1977, is a Pennsylvania-based manufacturer of organic heat transfer fluids and complementary thermal equipment serving 35 industrial process sectors — including food, chemical, plastics, HVAC, asphalt, and die casting — via direct technical sales, filtration systems, and field services.

Ownership category

akta.pro rank

Product category

Industrial Heat Transfer Fluids

NAICS

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

SIC

Heating Equipment, Except Electric & Warm Air Furnaces (3433), Industrial Process Furnaces & Ovens (3567)

akta.pro primary industry

Heat Transfer Fluids (IMAEAMAG)

akta.pro secondary industry

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

Keywords

• Heat transfer fluids
• Thermal fluid systems
• Industrial process heating
• Food grade fluids
• Fluid analysis services

Headquarters

HQ city

Pottstown

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Heat Transfer Fluid Products: MultiTherm generates revenue primarily through the sale of heat transfer fluids including MultiTherm PG-1, OG-1, 503, IG-4, IG-1, FF-1, PSC-Plus, and 550. Products are sold in various quantities from 5-gallon pails to 55-gallon drums to bulk tankers (2,500+ gallons).
2. Field Service and Technical Support: On-site technical services including fluid analysis, cleaning, troubleshooting, design support, and training. Billed at $150 per hour normal rate with overtime multipliers.
3. Industrial Coils and Heat Exchangers: Sale of replacement coils, heat exchangers, tube bundles, and related industrial equipment through their sister company Multithermcoils.com.
4. System Filtration Equipment: Hot oil filtration systems available for lease or purchase, designed to handle thermal fluid systems up to 750°F.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels5 records

Core offering

MultiTherm manufactures and sells organic petroleum-based heat transfer fluids (PG-1, OG-1, 503, IG-4, IG-1, FF-1, PSC-Plus, and 550) for liquid-phase heating and cooling systems operating from 10°F to 660°F. The company also offers hot oil filtration systems, fluid analysis laboratory services, design support, training, and industrial coils/heat exchangers through a sister site, serving food processing, chemical, plastics, HVAC, asphalt, and other process industries.

Product overview

MultiTherm is a manufacturer of industrial heat transfer fluids and related equipment, operating since 1977. The product portfolio centers on eight distinct heat transfer fluid formulations (PG-1, OG-1, 503, IG-4, IG-1, FF-1, PSC-Plus, and 550) ranging from food-grade certified products for closed-loop systems to oxidation-resistant formulations for open systems. Supporting the fluid products, the company offers filtration systems capable of handling fluids up to 750°F, fluid analysis laboratory services, design support, training programs, and system troubleshooting. The fluids are applicable across a temperature range of 10°F to 660°F for liquid-phase heating and cooling in HVAC, food, chemical, and plastics industries.

Differentiator

Problem solved

Functional benefit

Products and services

• MultiTherm PG-1 Production Grade Non-toxic, non-hazardous, non-corrosive heat transfer fluid for closed-loop, liquid-phase heating systems up to 600°F. NSF HT-1 approved for incidental food contact and Kosher certified.
• MultiTherm OG-1 Oxidation Grade Oxidation-resistant heat transfer fluid for open-system liquid phase applications, offering excellent thermal conductivity, low vapor pressure, and high flash point at high temperatures.
• MultiTherm 503 Heating and Cooling Heat transfer fluid designed for both heating and cooling applications in liquid-phase systems.
• MultiTherm IG-4 Industrial Grade Non-toxic, durable heat transfer oil for closed-loop liquid-phase heating systems up to 600°F with very low vapor pressure and oxidation resistance. NSF HT-1 approved and Kosher certified.
• MultiTherm IG-1 Industrial Grade Group II highly refined, hydrotreated mineral oil designed for closed heat transfer systems with excellent thermal conductivity at high temperatures, low vapor pressure, and high flash point.
• MultiTherm FF-1 Flushing Fluid Specially formulated flushing fluid for cleaning heat transfer systems during start-up and general maintenance; usable during operation for up to 3 days at temperatures up to 550°F. NSF HT-1 approved and Kosher certified.
• MultiTherm PSC-Plus System Cleaner System cleaning fluid designed to remove sludge, carbon deposits, and contaminants from heat transfer fluid systems.
• MultiTherm 550 Heat transfer fluid for industrial heating and cooling applications.
• Filtration Systems Hot oil filtration systems including side-stream and in-line filters for thermal fluids up to 750°F, featuring swing bolts for easy cartridge changeout and insulated filter casings.
• Fluid Analysis Laboratory testing service evaluating fluid condition including Total Acid Number (TAN), viscosity measurement, and distillation tests to identify thermal cracking, oxidation, and contamination.
• Field Service and Technical Support On-site technical services including fluid analysis, cleaning, troubleshooting, design support, and training billed at $150 per hour normal rate with overtime multipliers.
• Design Support Technical consulting service to help select the best fluid for customer applications and provide equipment specifications and supplier recommendations.
• Training Programs Comprehensive training programs covering fluid analysis interpretation, preventative maintenance, fluid breakdown analysis, and standard operating procedures for heat transfer systems.
• Industrial Coils and Heat Exchangers Replacement coils, heat exchangers (shell and tube, plate and frame, brazed), tube bundles, hot water/steam/chilled water/refrigerant coils sold through the sister company Multithermcoils.com.

Quantifiable outcome

• Operating temperature range of 10°F to 660°F
• +6 more outcomes

Named customers7 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Four partnerships are on record, tiered core and minor.

• Heater and Processing Equipment ManufacturerscoreStrategic or Co-development PartnerMultiTherm has built excellent relationships with heater and processing equipment manufacturers, working together on projects to support customers. These partnerships enable coordinated solutions for thermal fluid system design and implementation.
• National Asphalt Paving Association (NAPA)minorOthersIndustry association membership providing networking and visibility in the asphalt paving industry where MultiTherm heat transfer fluids are used in manufacturing equipment.
• Texas Asphalt Paving Association (TXAPA)minorOthersRegional industry association membership supporting the asphalt paving industry in Texas where MultiTherm products serve roofing and road-paving applications.
• Enfinite (Oil Recycling Association)minorOthersMembership in the Oil Recycling Association supporting sustainable practices in the heat transfer fluid industry through proper fluid disposal and recycling.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• Shell: Global oil major producing petroleum-based heat transfer fluids alongside lubricants and process oils. Competes with MultiTherm on petroleum-fluid formulations but at substantially larger scale and broader geographic distribution.
• Lanxess: Specialty chemicals company with industrial fluid and lubricant additives relevant to heat transfer applications. Overlaps with MultiTherm on industrial fluid chemistry and end markets.
• BASF: Diversified chemical company with specialty heat transfer fluid offerings targeting similar process industries. Competes with MultiTherm in industrial thermal fluids but within a much broader chemical product portfolio.
• Dow Chemical Company: Markets Dowtherm and Syltherm synthetic heat transfer fluids as part of a broader specialty chemicals portfolio. Comparable product chemistry but vastly larger scale and broader portfolio reach than MultiTherm.
• ExxonMobil: Markets Mobiltherm heat transfer fluids as part of its lubricants and specialty fluids business. Overlaps with MultiTherm on petroleum-based industrial fluids across the same process industry verticals.
• Petro-Canada Lubricants: Produces petroleum-based industrial heat transfer fluids (e.g., Calflo) serving HVAC and process industries. Directly comparable product family to MultiTherm's IG-1, PG-1, and similar industrial-grade fluids.
• Phillips 66: Refining and marketing company producing specialty petroleum fluids including thermal fluid base stocks. Competitor at the petroleum-fluid input layer that competes with MultiTherm's finished formulations.

Others

• Alfa Laval: Global manufacturer of heat exchangers and thermal separation equipment. Not a direct fluid competitor but the dominant equipment counterpart to MultiTherm's sister-company heat exchanger business, often specified together in thermal fluid systems.

Direct peers

• Paratherm: Specialty heat transfer fluid manufacturer focused on liquid-phase thermal fluids for industrial process heating. Closely comparable in scale, product positioning, and end-market focus to MultiTherm.
• Eastman Chemical Company: Markets the Therminol line of heat transfer fluids, the most recognized direct competitor to MultiTherm across both petroleum-based and synthetic thermal fluids in liquid and vapor phases. Comparable product breadth and overlap on industrial and food-grade applications.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights6 records

Customer concentration

• Xx.com/MultithermL
• LinkedInlinkedin.com/company/multitherm-llc

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries1 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 MultiTherm