What Sensience does

Sensience, formerly Therm-O-Disc, is a US-headquartered (Westerville, OH) industrial manufacturer of highly engineered sensing, limiting, and sealing components serving OEM customers across HVAC, refrigeration, transportation/EV, appliance, water heating, process & industrial, and aerospace & defense verticals. Its portfolio is organized across three technology pillars — sensing (temperature, pressure, and A2L/A3 refrigerant gas sensors), safety limits and controls (bi-metal disc thermostats and MICROTEMP thermal fuses), and glass-to-metal hermetic sealing (Fusite and Thunderline-Z electrical feedthroughs, sight glass, sealed electronic packaging) — with manufacturing in the US, China, and Mexico producing nearly one billion components annually. Core technology includes Micro-Machined Membrane A2L gas sensors built around NevadaNano's MPS platform (the first UL-certified A2L sensor under UL 60335-2-40 4th edition), piezo-resistive MEMS pressure chips for harsh refrigerant environments, and NTC thermistor temperature sensors qualified to AEC-Q200 for EV battery and coolant monitoring.

Sensience operates a sales-led, enterprise field-sales model selling direct to OEM engineering, procurement, and regulatory teams and supporting a global distributor network, with revenue derived from hardware sales of configured and custom-engineered components. Pricing is quote-based and not publicly disclosed. The company was acquired by One Rock Capital Partners in June 2022, rebranded from Therm-O-Disc to Sensience in January 2023, relocated its global headquarters to Westerville in February 2024, and has named enterprise customers including Whirlpool, Daikin, BAE Systems, and General Motors. Despite strategic product expansion into A2L refrigerant sensing and EV thermal management, the business is currently operating under capital-structure stress: Moody's downgraded the Probability of Default rating to D-PD in June 2026 reflecting default on obligations, with the Corporate Family Rating affirmed at Caa3 following recapitalization.

Name

Sensience

Legal name

Sensience

Website

https://sensience.com

Company type

Private

Founded year

1948

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Sensience manufactures sensing, limiting, and sealing components — including A2L refrigerant gas sensors, temperature and pressure sensors, thermal fuses, and glass-to-metal hermetic seals — for OEM customers across HVAC, appliance, automotive/EV, and industrial markets.

Ownership category

akta.pro rank

Product category

Industrial Sensors and Controls

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

Industrial Instruments For Measurement, Display, And Control (3823), Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

Industrial-Grade Sensors & Transducer Components (Discrete sensing elements, transducers, MEMS sensors) (IMAGAJAO)

akta.pro secondary industries

Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH), Air Quality & Filtration Equipment (IAQ) (IMAHAKAI)

Keywords

• Industrial sensor components
• HVAC refrigerant sensors
• Thermal protection devices
• Glass-to-metal hermetic seals
• Automotive thermal management sensors

Headquarters

HQ city

Mansfield

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Sensor and Control Component Sales: Sensience generates revenue by manufacturing and selling highly engineered sensing, limiting, and sealing components to OEM customers. Products include temperature sensors, gas sensors, pressure sensors, bi-metal disc thermostats, thermal fuses, electrical feedthroughs, and sealed electronic packaging. Revenue is derived from long-term supply relationships with appliance, HVAC, automotive, and industrial manufacturers.

Go-to-market motion2 records

Distribution channels2 records

Marketing channels5 records

Core offering

Sensience designs and manufactures highly engineered sensing, limiting, and sealing components, including temperature sensors (NTC thermistors, RTDs), gas sensors for A2L/A3 refrigerant leak detection, MEMS-based pressure sensors, bi-metal disc thermostats, thermal fuses, and glass-to-metal hermetic electrical feedthroughs. These components are sold to OEM manufacturers across HVAC, refrigeration, transportation/EV, appliance, water heating, process/industrial, and aerospace and defense markets, with the company producing nearly one billion components annually across global facilities.

Product overview

Sensience is a global manufacturer of highly engineered sensing, control, and sealing components producing nearly one billion components annually. The portfolio is organized across three core technology areas — Sensing Technologies (temperature sensors, gas sensors, pressure sensors), Safety Limits and Controls (bi-metal disc thermostats, thermal fuses, packaged thermal fuses), and Glass-to-Metal Hermetic sealing (electrical feedthroughs, sight glass, sealed electronic packaging) — supported by Electronic Controls. These components serve applications across HVAC, refrigeration, transportation, appliance, water heating, process and industrial, and aerospace and defense markets. The product line is distributed under several established brands including Therm-O-Disc, MICROTEMP®, Fusite™, Pactrol™, and Thunderline-Z, which have been serving the industry for over 75 years. Recent innovations focus on A2L and A3 refrigerant gas sensors for the HVACR industry's transition to lower-GWP refrigerants.

Differentiator

Problem solved

Functional benefit

Brands

• MICROTEMP®: Thermal fuses product brand
• Therm-O-Disc
• Pactrol™
• Fusite™
• Thunderline-Z

Products and services

• EV/ICE Coolant and Refrigerant Temperature Sensors NTC thermistor-based temperature sensors designed for hybrid and electric vehicle thermal management systems, detecting coolant and refrigerant temperatures in liquid-immersed applications with accuracy of ±1%, 0.5°C at 25°C and response times as fast as ~2 seconds. Aimed at automotive OEMs and EV manufacturers.
• Pressure Sensor (MEMS Piezo Resistive) Moisture-resistant pressure sensor using a piezo resistive MEMS chip for harsh refrigerant environments in HVAC and transportation applications. Operates from -40°C to 150°C and is available in absolute and differential types with pressures from 1 to 50 bar.
• EV Hermetic Terminal and E-Compressor Feedthrough Glass-to-metal hermetic electrical feedthrough that feeds power from inverter to motor in electric vehicle e-compressor applications, providing insulation and hermetic sealing to prevent refrigerant or oil leakage. Designed for operating voltages above 600-800V with max 50A current and is chemically resistant to refrigerants including R134a, 1234yf, R407C, and R404A.
• A2L and A3 Refrigerant Gas Sensors UL-certified gas sensors using Micro-Machined Membrane technology partnered with NevadaNano MPS technology for highly selective detection of A2L refrigerants (R-32, R-454B, R-454C). Provides sub-10-second response to 25% LFL, immunity to poisoning, 15-year lifetime with no calibration required, and built-in environmental compensation for temperature, humidity, and pressure.
• Temperature Sensors Broad category of temperature sensing solutions including NTC thermistors, PT1000 RTDs, and temperature sensor assemblies for HVAC, appliances, automotive, and industrial applications. Sold under the Therm-O-Disc brand.
• Gas Sensors Gas sensing solutions including A2L refrigerant leak detection sensors and A3 refrigerant sensors for commercial, industrial, and residential HVAC and refrigeration applications.
• Bi-Metal Disc Thermostats Bi-metal temperature controls providing automatic reset and one-shot thermal protection for appliances, HVAC equipment, and industrial applications.
• MICROTEMP Thermal Fuses MICROTEMP-branded thermal fuses providing non-resettable over-temperature protection for appliances, HVAC equipment, and industrial equipment.
• Fusite Electrical Feedthroughs Glass-to-metal hermetic electrical feedthroughs sold under the Fusite brand, providing sealed electrical connections for compressors, sensors, and other critical applications where leak-free sealing is essential.

Quantifiable outcome

• First in industry to achieve UL certification for A2L gas sensor under UL 60335-2-40, 4th edition standard
• +5 more outcomes

Named customers4 records

Segments7 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• ICM ControlscoreStrategic or Co-development Partner · 24 April 2023Sensience partnered with ICM Controls in April 2023 to integrate Sensience's A2L gas sensors with ICM Controls' sensor mitigation board. ICM Controls is an ISO-certified electronics manufacturing company that developed a customizable mitigation board fully compatible with Sensience's A2L gas sensors. The partnership addresses the American Innovation and Manufacturing (AIM) Act's transition to low-GWP A2L refrigerants, providing a combined Sensience-ICM A2L Sensor and Mitigation Kit for HVAC, refrigeration, and industrial customers.
• NevadaNanocoreTechnology or IntegrationSensience utilizes NevadaNano's MPS (Micro-Electro-Mechanical Systems) technology in its A2L and A3 refrigerant gas sensors. NevadaNano's technology enables the Micro-Machined Membrane (MMM) sensors with high selectivity, immunity to poisoning, and built-in environmental compensation. The partnership provides Sensience's A2L sensors with their core detection technology.

Scale indicators2 records

Recent moves9 records

Expansion highlights5 records

Broad incumbents

• Bosch Sensortec: Bosch Sensortec is a broad incumbent in MEMS sensors (pressure, gas, environmental) serving automotive, consumer, and HVAC applications. As a much larger player with deep MEMS R&D, Bosch represents both a competitor in MEMS-based pressure sensors and a potential threat in next-generation A2L sensing.
• Emerson Electric: Emerson is Sensience's former parent (Therm-O-Disc was an Emerson business unit until 2022). Emerson retains sensing, thermal management, and HVAC control product lines and competes with Sensience in industrial sensors, refrigeration controls, and hermetic sealing — sharing deep category expertise.
• TE Connectivity: TE Connectivity is a global incumbent in sensors and connectors serving automotive, industrial, and aerospace markets. Its sensor portfolio (pressure, temperature, humidity, position) competes directly with Sensience in automotive EV thermal management and industrial process applications.
• Honeywell Sensing & IoT: Honeywell's Sensing & IoT division is a broad incumbent offering industrial sensors (pressure, temperature, gas), switches, and controls used across HVAC, appliance, and aerospace — the same verticals Sensience serves. Honeywell competes as a much larger, diversified supplier with broader portfolio depth.

Direct peers

• Amphenol Advanced Sensors: Amphenol Advanced Sensors (formerly GE Sensing) manufactures temperature, pressure, and gas sensors used in HVAC, medical, and industrial applications — a directly comparable product portfolio. Both companies target similar OEM customers with mission-critical sensing components.
• Minco Products: Minco Products is a direct competitor in temperature sensors, heaters, and integrated sensing solutions for HVAC, medical, aerospace, and industrial applications. Both companies serve similar OEM design-in motions with custom-engineered thermal sensing components.
• Sensata Technologies: Sensata is the most direct comparable — a global manufacturer of sensors and controls for industrial, automotive, and HVAC applications. Its portfolio of pressure sensors, temperature sensors, and safety controls directly overlaps Sensience's product lines and shares similar OEM customer concentration in automotive and industrial end-markets.
• IST AG (Innovative Sensor Technology): IST AG manufactures precision temperature, humidity, and gas sensors for industrial, HVAC, and automotive applications. Its portfolio of NTC thermistors and environmental sensors directly competes with Sensience's temperature sensor offerings in European and global OEM markets.

Emerging players

• Watts Water Technologies: Watts Water is a direct competitor in water heating sensors and temperature/pressure controls — one of Sensience's named application segments. Both companies sell safety limit controls and temperature sensors to water heater OEMs.
• Figaro Engineering: Figaro Engineering is a specialist manufacturer of gas sensors (including refrigerant detection) competing with Sensience in the A2L/A3 refrigerant leak detection category. Its semiconductor and electrochemical gas sensor portfolio represents an emerging threat as the A2L regulatory market grows.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/therm-o-disc

Compliance8 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles6 records

Subsidiaries2 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 Sensience