Flextherm
Flextherm, par Stelpro, is a Quebec-based brand that designs and manufactures electric radiant floor heating cables, CONCERTO thermostats, and ProtecTHERM self-regulating de-icing cables, sold to residential, commercial, and industrial customers across Canada and the United States through Stelpro's distributor network.
- Company typePrivate
- Founded1981
- HeadquartersLongueuil, Canada
- Headcount11–50
- GTM typeB2B
- OfferingHardware or Manufacturing
What Flextherm does
Flextherm is a Canadian brand of electric radiant floor heating and de-icing cable systems, operating as a product line under Stelpro, Inc., a privately-held Quebec-based manufacturer established in 1981 and described as North America's largest electric heating appliance manufacturer. The Flextherm product portfolio is centered on comfort heating cables — the HGS Green Cable Surface XL, GC Green Cable Concrete 6 Watts, and TC Concrete Mat Xpress — paired with the HGSMD uncoupling membrane accessory, and is controlled through the CONCERTO thermostat family (Wi-Fi connected, touch screen, programmable, non-programmable BASIC, and EXPANSION unit). A separate ProtecTHERM line of self-regulating cables (CS0 preassembled, PTPR custom) extends the offering to exterior snow melting, roof and gutter de-icing, and pipe freeze protection.
The business model is hardware sales through indirect channels. Flextherm does not publish pricing; customers request quotes through a dedicated online quote portal (quote.flextherm.com), and fulfillment runs through Stelpro's established distributor and retailer network across Canada and the United States, supplemented by a certified-installer locator. End customers are segmented horizontally into residential (primary), commercial, and industrial use-cases, with projects typically executed by trade professionals rather than direct end-consumer purchase.
Following the February 2021 rebrand to 'Flextherm, par Stelpro', Flextherm operates as an integrated brand within the parent rather than as an independent corporate entity. Revenue, headcount growth, and AI/ML capability signals are not disclosed in the available data, which limits deeper financial assessment. The company's strategic positioning rests on combining three-decade category expertise with the parent's North American distribution and service scale, and on broadening its connected thermostat and exterior de-icing product surface over time.
Flextherm firmographics
Firmographics- Name
- Flextherm
- Legal name
- Stelpro, Inc.
- Website
- https://flextherm.com
- Company type
- Private
- Founded year
- 1981
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Flextherm, par Stelpro, is a Quebec-based brand that designs and manufactures electric radiant floor heating cables, CONCERTO thermostats, and ProtecTHERM self-regulating de-icing cables, sold to residential, commercial, and industrial customers across Canada and the United States through Stelpro's distributor network.
- Ownership category
- akta.pro rank
Flextherm industry classification
Industry- Product category
- Radiant Floor Heating Systems
- NAICS
- Heating Equipment (except Warm Air Furnaces) Manufacturing (333414), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)
- akta.pro primary industry
- Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)
- akta.pro secondary industry
- Roof Insulation & Cover Boards (IMADAFAN)
Keywords
Where Flextherm is headquartered
LocationHeadquarters
- HQ city
- Longueuil
- HQ country
- Canada
- HQ region
- North America
Offices1 record
Markets served
Flextherm business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- Floor Heating Cable Systems: Sale of comfort cables (HGS, GC, TC) for radiant floor heating installations in residential, commercial, and industrial applications. One-time product sales with installation through certified professionals.
- Thermostats and Controls: Sale of CONCERTO thermostat series and protection controls for floor heating systems. Complementary accessory sales accompanying core cable system purchases.
- Snow Melting and De-icing Systems: Sale of ProtecTHERM self-regulating cables and snow melting systems (SSC, SSFP, SSFR, SCPT, SCRG) for exterior protection applications including driveways, roofs, and pipes.
Go-to-market motion1 record
Distribution channels3 records
Marketing channels3 records
Flextherm product offering
Product offeringCore offering
Flextherm manufactures and sells electric radiant floor heating cable systems (HGS surface XL, GC concrete embedment 6W, TC Xpress concrete mat), the HGSMD uncoupling membrane, and the CONCERTO line of floor heating thermostats (Wi-Fi connected, touch screen, programmable, non-programmable, expansion unit). The company also offers ProtecTHERM self-regulating de-icing cables for snow melting on driveways, roofs, and pipes. Products are designed and manufactured in Quebec and sold through distributors, retailers, and certified electricians across North America under the 'Flextherm, par Stelpro' brand.
Product overview
Flextherm, by Stelpro, is a floor heating system brand offering a comprehensive portfolio of heating cable products and thermostats. The product line centers on comfort heating cables (HGS Green Cable Surface XL, GC Green Cable Concrete 6 Watts, TC Concrete Mat Xpress) designed for embedding in concrete or surface installation, complemented by the HGSMD uncoupling membrane accessory. Control is managed through the CONCERTO thermostat family (WI-FI connected, Touch screen, Programmable, Non-Programmable BASIC, and EXPANSION unit) for zone management. For exterior applications, Flextherm offers ProtecTHERM self-regulating de-icing cables (preassembled CS0 and custom PTPR) for snow and ice protection. The portfolio operates as a modular system where heating cables are paired with CONCERTO thermostats for complete floor heating solutions, with the brand benefiting from Stelpro's distribution network while maintaining over 30 years of Flextherm expertise.
Differentiator
Problem solved
Functional benefit
Brands
- ProtecTHERM: Self-regulating de-icing cables for snow and ice protection
- CONCERTO
- HGS (Câble vert)
- GC (Câble Vert)
- TC (Trame Xpress)
Products and services
- HGS | Câble vert surface XL (Green Cable Surface XL) Green heating cable designed for surface installation in electric radiant floor heating systems, used in residential, commercial, and industrial floor heating applications.
- GC | Câble Vert Enfouissement 6 Watts (Green Cable Concrete 6 Watts) Green heating cable rated at 6 Watts per linear foot for embedding in concrete as part of a radiant floor heating system.
- TC | Trame enfouissement Xpress (Concrete Mat Xpress) Heating mat utilizing Xpress technology for quick installation when embedded in concrete as part of a radiant floor heating system.
- HGSMD | Membrane de désolidarisation (Uncoupling Membrane) Uncoupling membrane that separates floor heating cable installations from the subfloor, preventing cracking by allowing independent movement between layers in a floor heating assembly.
- STF362WF | CONCERTO WI-FI Connected Floor Heating Thermostat Wi-Fi enabled smart thermostat for floor heating systems with remote temperature control and energy optimization capabilities.
- STF362PTS | CONCERTO TOUCH Touch Screen Floor Heating Thermostat Touch screen thermostat for floor heating systems providing an intuitive temperature control interface.
- STF362P | CONCERTO Programmable Floor Heating Thermostat Programmable thermostat for floor heating systems with scheduling capabilities for time-of-day temperature control.
- STF362NP | CONCERTO BASIC Non-Programmable Floor Heating Thermostat Non-programmable basic thermostat for floor heating systems providing straightforward manual temperature control.
- STF362XU | CONCERTO EXPANSION Expansion Unit Expansion unit that extends CONCERTO thermostat control to additional floor heating zones within a single installation.
- CS0 | ProtecTHERM Preassembled Self-Regulating De-icing Cables Preassembled self-regulating heating cables that automatically adjust heat output based on ambient temperature to prevent ice buildup on roofs, gutters, and other exterior surfaces.
- PTPR | ProtecTHERM Custom Self-Regulating De-icing Cables Custom self-regulating heating cables made to specification for de-icing applications such as roofs, gutters, driveways, and pipe freeze protection.
- ProtecTHERM Snow Melting and Exterior Protection System Line Exterior protection systems including snow melting cable solutions for driveways, walkways, roofs, gutters, and pipe freeze protection, using self-regulating heating technology.
Companies that use Flextherm
Customer profileSegments3 records
Ideal customer profiles3 records
Flextherm technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Flextherm partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- StelprocoreFlextherm products are now proudly branded as 'Flextherm, par Stelpro' (Flextherm, by Stelpro). This integration combines Flextherm's 30+ years of radiant floor heating expertise with Stelpro's North American distribution network and service capabilities. Customers benefit from both Flextherm's quality products and Stelpro's expanded reach.
Scale indicators2 records
Recent moves4 records
Expansion highlights4 records
Flextherm competitors and assessment
Company assessmentBroad incumbents
- Uponor: Uponor is a global leader in radiant heating/cooling with primary focus on hydronic (water-based) systems but overlapping presence in floor heating installations. Broad incumbent in the radiant heating category that competes for similar end customers and installer relationships.
- REHAU: REHAU offers radiant floor heating systems (primarily hydronic PEX-based) along with broader building solutions. A broad incumbent in the radiant heating category competing for new construction and renovation projects where Flextherm also plays.
Direct peers
- WarmlyYours: WarmlyYours offers electric radiant floor heating systems (TempZone cables/mats), snow melting solutions, and complementary thermostats. Directly comparable to Flextherm's product mix across floor heating and de-icing, with similar installer/distributor distribution model.
- Schluter Systems: Schluter's DITRA-HEAT system integrates uncoupling membrane with electric heating cables, directly overlapping Flextherm's HGSMD membrane and cable offerings. Targets the same installer channel (tile contractors) for floor heating installations.
- Nuheat: Nuheat is a leading North American manufacturer of electric radiant floor heating systems (cables and mats) and programmable thermostats. Direct head-to-head competitor to Flextherm with comparable products, customer segments (residential/commercial), and installer-based go-to-market.
- Warmup: Warmup is a UK-founded global manufacturer of electric radiant floor heating systems (cables, mats) and snow melting solutions. Comparable product portfolio to Flextherm with broader international footprint; competes via similar installer/specifier channels.
- ThermoSoft International: ThermoSoft manufactures electric radiant floor heating systems (cables, mats, films) for residential and commercial applications. Directly comparable product line to Flextherm with similar specifier and installer-driven distribution.
- SunTouch (Watts Water Technologies): SunTouch, owned by Watts Water Technologies, manufactures electric radiant floor heating mats, cables, and controls. Directly comparable to Flextherm's core cable and thermostat offerings across residential and light commercial segments.
Emerging players
- Mysa: Mysa is a smart thermostat company specializing in electric heating controls (floor, baseboard, forced air) with a strong smart-home/energy-management positioning. Emerging player that overlaps with Flextherm's CONCERTO smart thermostat line, particularly with energy-conscious consumers.
- Sinopé Technologies: Sinopé is a Quebec-based smart home controls company offering Wi-Fi thermostats for electric floor heating, baseboard, and forced-air systems. Regional emerging player directly competing with Flextherm's CONCERTO line, especially in the Canadian market with overlapping dealer channels.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks7 records
Key highlights7 records
Customer concentration
Flextherm social profiles
Digital presenceFlextherm financial estimates
Financial estimateRevenue estimate
Valuation estimate
Flextherm leadership team
Management profileNumber of profiles
Profiles1 record
Flextherm funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Flextherm M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Flextherm
What does Flextherm do?
Flextherm manufactures and sells electric radiant floor heating cable systems (HGS surface XL, GC concrete embedment 6W, TC Xpress concrete mat), the HGSMD uncoupling membrane, and the CONCERTO line of floor heating thermostats (Wi-Fi connected, touch screen, programmable, non-programmable, expansion unit). The company also offers ProtecTHERM self-regulating de-icing cables for snow melting on driveways, roofs, and pipes. Products are designed and manufactured in Quebec and sold through distributors, retailers, and certified electricians across North America under the 'Flextherm, par Stelpro' brand.
Is Flextherm a public or private company?
Flextherm is a private company. It is classified as corporate owned and is currently operating.
When was Flextherm founded?
Flextherm was founded in 1981. It employs 11 to 50 people.
Where is Flextherm based?
Flextherm is headquartered in Longueuil, Canada, in the North America region.
How does Flextherm make money?
Three revenue lines are on record. Floor Heating Cable Systems are the primary driver. The others are thermostats and Controls and snow Melting and De-icing Systems.
Who are Flextherm's main competitors?
Broad incumbents on record are Uponor and REHAU. Direct peers are WarmlyYours, Schluter Systems, Nuheat, Warmup, ThermoSoft International and SunTouch (Watts Water Technologies). Emerging players are Mysa and Sinopé Technologies.
Does Flextherm have an API?
No public API is recorded for Flextherm.
What industry is Flextherm in?
Flextherm's product category is Radiant Floor Heating Systems. Its primary akta.pro industry code is IMADANAF, Heat Exchangers, Coils & Hydronic HVAC Components, with a secondary code of IMADAFAN, Roof Insulation & Cover Boards. Its NAICS code is 333414 and its SIC code is 3585.