Supco
- Company typePrivate
- Founded1945
- HeadquartersAllenwood, United States
- Headcount101–250
- GTM typeB2B
- OfferingHardware or Manufacturing
What Supco does
Supco (Sealed Unit Parts Company) is a U.S.-based designer, manufacturer, and distributor of HVACR (heating, ventilation, air conditioning, and refrigeration) components, test instruments, and tools, founded in 1945 and headquartered in Bay Shore, New York. The company operates a catalog of more than 1,300 SKUs across HVAC parts (capacitors, motors, contactors, relays, thermostats, transformers, valves), commercial refrigeration components (compressors, defrost timers, heaters, refrigeration relays), test and diagnostic instruments (multimeters, refrigerant scales, leak detectors, data loggers, indoor air quality meters), tools and chemicals, and a smaller line of finished air conditioning equipment (window units, portable AC, dehumidifiers, mini-split inverters). Its core technical proposition is universal replacement parts engineered to substitute for hundreds of OEM part numbers across brands including Whirlpool, GE, Samsung, LG, Electrolux, and Amana, reducing inventory burden for service technicians.
The business is a wholesale, distributor-mediated model: Supco does not sell directly to end users but routes all transactions through an authorized distributor network serving HVAC technicians, duct fabricators, commercial refrigeration service providers, and appliance repair professionals across North America. Pricing is not publicly disclosed; distributors access pricing and availability through the dedicated supcopricing.com portal. Revenue is generated through one-time product sales across multiple SKUs, with no recurring software or service revenue streams evident.
In October 2025, Supco was acquired by Lennox International (NYSE: LII) as part of a ~$550 million cash acquisition of NSI Industries' HVAC division, which also included the DuroDyne brand platform. Post-acquisition, Supco operates as a wholly-owned brand within Lennox's parts and supplies portfolio, expanding its commercial reach through Lennox's nationwide distribution and dealer network while retaining the Supco brand identity and product lines.
Supco firmographics
Firmographics- Name
- Supco
- Legal name
- Supco
- Website
- https://supco.com
- Company type
- Private
- Founded year
- 1945
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Ownership category
- akta.pro rank
Supco industry classification
Industry- Product category
- HVACR Parts and Components Manufacturing
- NAICS
- Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341), Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)
- SIC
- Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Refrigeration & Service Industry Machinery (3580)
- akta.pro primary industry
- Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH)
- akta.pro secondary industries
- Ventilation, Ducting & Air Distribution Equipment (IMAHAKAG), Heat Exchangers, Coils & Hydronic HVAC Components (IMADANAF)
Keywords
Where Supco is headquartered
LocationHeadquarters
- HQ city
- Allenwood
- HQ country
- United States
- HQ region
- North America
Offices1 record
Markets served
Supco business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure
Revenue model
- HVAC Parts and Supplies: Supco generates revenue through the sale of HVAC and refrigeration replacement parts, components, and supplies to technicians and contractors through distributor channels. This includes electrical HVACR parts, mechanical HVACR parts, equipment accessories, chemicals, fasteners, and tools.
- Commercial Refrigeration Products: Commercial refrigeration components including compressors, defrost timers, heaters, motors, valves, and fittings for the commercial refrigeration market.
- Appliance Parts: Replacement parts for major home appliances including dishwashers, dryers, microwaves, ranges, refrigerators, and washers.
- Test Instruments and Tools: Test instruments including chart recorders, data loggers, HVAC instruments, indoor air quality meters, leak detectors, multimeters, refrigerant scales, and thermometers for HVACR professionals.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels5 records
Supco product offering
Product offeringCore offering
Supco (Sealed Unit Parts Company) designs, manufactures, and distributes HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) replacement parts, components, test instruments, tools, and air conditioning equipment. The company sells through an authorized distributor network serving HVAC technicians, contractors, fabricators, and appliance repair professionals across North America, with a catalog of universal replacement parts compatible with multiple OEM brands.
Product overview
Supco (Sealed Unit Parts Company) is a comprehensive HVAC and refrigeration parts supplier offering a broad portfolio of repair components, test instruments, tools, chemicals, and air conditioning equipment. The product lineup includes HVAC parts (capacitors, motors, contactors, relays, thermostats), commercial refrigeration components (compressors, driers, defrost timers), test instruments (multimeters, leak detectors, refrigerant scales), air conditioning equipment (inverters, window units, portable AC), and appliance parts. Supco operates as a brand under the Durodyne parent company (part of NSI Industries), which was acquired by Lennox International in October 2025 for approximately $550 million. The company serves HVAC technicians and fabricators through its distribution network, providing universal replacement parts compatible with multiple OEM brands.
Differentiator
Problem solved
Functional benefit
Brands
- Supco: HVAC and Refrigeration Repair products including parts, equipment, tools, and accessories for residential and commercial markets.
Products and services
- HVAC Parts Comprehensive catalog of HVAC repair and replacement components including AC hard starts, air filters, belts, capacitors, contactors, driers, fan blades, motors, pressure switches, relays, thermostats, transformers, and valves for residential and commercial HVAC systems. Designed for HVAC technicians and contractors who need universal cross-OEM compatible parts.
- Commercial Refrigeration Parts and components for commercial refrigeration systems including cap tubing, compressors, condensate drain pans, defrost thermostats, defrost timers, driers, heaters, motors, refrigeration relays, overloads, hard starts, valve tools, and valves. Designed for commercial refrigeration service businesses operating walk-in coolers, freezers, and display cases.
- Test Instruments and Alarms Diagnostic and monitoring equipment for HVACR professionals including chart recorders, data loggers, HVAC instruments, indoor air quality meters, leak detectors, multimeters, refrigerant scales, temperature alarms and controls, thermometers, vacuum and pressure gauges, and water alarms.
- Tools and Chemicals HVAC installation and maintenance supplies including installation items, oilers, terminals and connectors, specialty tools, cleaners, lubricants, repair chemicals, fasteners, hanging and support systems, and ties and clamps.
- Air Conditioning Equipment Complete air conditioning units and components including capacitors, installation items, multi-zone inverters, portable AC and dehumidifiers, single zone inverter high SEER systems, through-wall units, and window AC units.
Companies that use Supco
Customer profileNamed customers3 records
Segments4 records
Ideal customer profiles3 records
Supco technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
Supco partnerships and signals
Strategic signalPartnerships
One partnership is on record.
- Lennox InternationalcoreLennox International acquired Supco as part of its approximately $550 million acquisition of the HVAC division of NSI Industries. Supco is now part of Lennox's parts and accessories portfolio, expanding their offerings in HVAC parts and supplies for residential and commercial markets across North America. The acquisition was completed in late 2025.
Scale indicators2 records
Recent moves4 records
Expansion highlights4 records
Supco competitors and assessment
Company assessmentMarket position
Competitive moat4 records
Key risks6 records
Key highlights6 records
Customer concentration
Supco social profiles
Digital presenceSupco financial estimates
Financial estimateRevenue estimate
Valuation estimate
Supco leadership team
Management profileNumber of profiles
Supco funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Supco 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 Supco
What does Supco do?
Supco (Sealed Unit Parts Company) designs, manufactures, and distributes HVACR (Heating, Ventilation, Air Conditioning, and Refrigeration) replacement parts, components, test instruments, tools, and air conditioning equipment. The company sells through an authorized distributor network serving HVAC technicians, contractors, fabricators, and appliance repair professionals across North America, with a catalog of universal replacement parts compatible with multiple OEM brands.
Is Supco a public or private company?
Supco is a private company. It is classified as corporate owned and is currently operating.
When was Supco founded?
Supco was founded in 1945. It employs 101 to 250 people.
Where is Supco based?
Supco is headquartered in Allenwood, United States, in the North America region.
How does Supco make money?
Four revenue lines are on record. HVAC Parts and Supplies are the primary driver. The others are commercial Refrigeration Products, appliance Parts and test Instruments and Tools.
Does Supco have an API?
No public API is recorded for Supco.
What industry is Supco in?
Supco's product category is HVACR Parts and Components Manufacturing. Its primary akta.pro industry code is IMAHAKAH, Refrigeration Components & Controls (Compressors, Valves, Sensors), with a secondary code of IMAHAKAG, Ventilation, Ducting & Air Distribution Equipment. Its NAICS code is 33341 and its SIC code is 3585.