ABOUT THERMSTAR™
ThermStar™ brings proven heat recovery technology and integrated thermal energy solutions to commercial and industrial customers across North America.
From a Swedish kitchen roof to North American FACILITIES
Lepido® was invented in Sweden in 2016 to recover energy from demanding commercial kitchen exhaust. The technology expanded into industrial applications in 2021, including food production, industrial laundry, foundries, manufacturing, and other particulate-laden processes. In 2025, ThermStar™ brought the technology to North America.
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2016 Lepido Launched in Sweden Built for restaurant and commercial kitchen exhaust, where grease and moisture overwhelmed conventional exchangers.
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2021 Into industry Food production, industrial laundry, foundries, manufacturing and other high-fouling processes.
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2025 North America Norrel Inc. launches the ThermStar System for the United States, Canada, and Mexico.
About Norrel
Norrel™ Inc. is the company behind ThermStar™ in North America and is the exclusive North American distributor of Lepido®. We combine heat recovery technology, HeatCore Hx™ delivery equipment, controls, monitoring and measurement into the ThermStar System™.
Patented heat recovery technology and intellectual property
The ThermStar System™ combines four core elements, anchored by Lepido® technology and a global portfolio of 41 patents.
41
patents
Lepido®
The finless exchanger that sits in the dirty exhaust.
Particle Repellent Geometry
Keeps particles moving through, not sticking.
HeatCore ™M Hx
Puts the recovered heat where it’s used.
ThermStar™ Power Intelligence
Measures what the system recovers.
8 international innovation awards for Lepido® technology, 2018–2022
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2018 WWF Climate Solver
Finalist -
2019 Nordic Cleantech Open
Finalist -
2019 Global Cleantech 100
Top 100 company -
2020 Perpetuum Energy Efficiency Prize
Germany -
2020 Solar Impulse Efficient Solution
Switzerland -
2020 Postcode Lotteries Green Challenge
Germany -
2020 SET Award
#SET100 · Germany -
2022 Horecava Innovation Award
Winner · Netherlands
Leadership
Scott Preston has spent more than 30 years leading businesses and operations across food processing, chemical manufacturing, mining, and industrial services. Across those industries, he repeatedly saw valuable thermal energy being exhausted from facilities after companies had already paid to produce it.
He founded ThermStar™ around a straightforward idea: recover that energy and put it back to work. The result is lower purchased energy, lower operating costs, and reduced emissions.
Heat in an exhaust plume is energy that has already been purchased and produced.
Scott Preston, CEM
Four elements, one mission
Our logo is more than a symbol, it is a statement of purpose. Each element supports the other, forming an efficient and self-sustaining clean energy cycle.
- Air Harmony in Motion The three elegant waves at the base symbolize air. Controlled, balanced, and essential, it reflects the quiet precision of airflow within the system.
- Fire Reclaiming Clean Heat At the center burns a green flame shaped like a leaf. This represents the heart of ThermStar: recovering waste heat and transforming it into reusable heat energy.
- Water Closed-Loop Circulation The circular arrow represents water, our brine circuit. Like nature, it flows continuously, ensuring thermal efficiency and sustainability.
- Earth Restorative and Renewable Hidden within the flame is a leaf, our nod to the Earth. It reflects our commitment to cleaner, greener energy solutions rooted in sustainability.
Air
Fire
Water
Earth
How ThermStar works
Every project starts with a screen and only moves forward when the application makes sense, for one exhaust source or many facilities.
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Where heat leaves your facility, and where it could serve a useful load.
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Exhaust conditions, operating hours and the receiving demand, reviewed together.
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Recoverable energy, delivery options and early project economics.
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A system concept built around your source, your demand and your site.
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ThermStar’s supply and services, and the interfaces your team owns.
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Working with your engineers and contractors on delivery and integration.
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Controls, sensors and operating sequences checked and confirmed.
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Recovered energy documented after startup, with reporting for incentives.
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Contact
ThermStar serves North America. Request an Assessment online, email solutions@thermstar.com, or call 833 667 7359. Business hours are Monday through Friday from 8 a.m. to 6 p.m. Eastern Time.
What is the relationship between ThermStar and Norrel Inc
Norrel Inc is the company behind the North American ThermStar offering. It supplies ThermStar heat recovery components, systems, technology, and related services, working with customers, utilities, manufacturers, distributors, engineers, specifiers, and installation contractors across North America.
What patents and intellectual property does ThermStar hold
The platform includes Lepido, patented Particle Repellent Geometry, HeatCore Hx™, and ThermStar Power Intelligence. The wider intellectual property portfolio includes 41 patents and multiple international innovation and technology awards.
How is confidential company and customer information handled
Customer operating data, project economics, drawings, configurations, proposals, commercial terms, and proprietary information are not published without authorization. Public claims should remain tied to approved evidence and context.
How can someone contact ThermStar with a technical question
Use the assessment form for a facility opportunity or email solutions@thermstar.com for a technical, media, document, customer, or partner inquiry. A representative will route the request to the appropriate next step.
Where can a ThermStar System be purchased
In North America, the ThermStar System™ is supplied by Norrel Inc., which trades as ThermStar. The first step is a complimentary Thermal Energy Opportunity Screen; general questions can go to info@thermstar.com.