Duncan Supply Company
Duncan Supply Company is a family-owned regional wholesale distributor founded in 1936, distributing HVAC/R and food service equipment parts and supplies from eight branches across Indiana, Central Illinois, Central Ohio, and Northern Kentucky to 3,500+ contractor accounts.
- Company typePrivate
- Founded1936
- HeadquartersIndianapolis, United States
- Headcount101–250
- GTM typeB2B
- OfferingServices
What Duncan Supply Company does
Duncan Supply Company is a privately held, family-owned wholesale distributor founded in 1936 and headquartered in Indianapolis, Indiana. The company distributes refrigeration, air conditioning, heating, and food service equipment parts and supplies through eight branch and distribution center locations spanning Indiana (Indianapolis, Fort Wayne, Plainfield, Lafayette, Mishawaka, Muncie, Terre Haute), Central Illinois, Central Ohio, and Northern Kentucky (West Chester). Its core offering is a $32 million inventory of more than 40,000 SKUs sourced from over 400 vendor relationships, including American Standard, Copeland, Honeywell Home, Johnson Controls/Penn, Bohn/Heatcraft, Scotsman, Mitsubishi, Sporlan, Nu-Calgon, JB Industries, RectorSeal, and Chemours.
Revenue is generated through B2B hardware sales to a customer base of 3,500+ active house accounts, primarily HVAC/R contractors and technicians, with a secondary segment of commercial food service operators. Distribution is executed via four parallel channels: branch counter locations for immediate pickup, outside sales representatives for commercial accounts, an eCommerce platform with live inventory visibility, and the MyTruck mobile delivery service that dispatches stocked service trucks directly to contractor job sites. Pricing is quote-based and negotiated through direct customer engagement; no public pricing exists. The company also operates a training facility in Indianapolis that hosts vendor-sponsored counter days and certification academies (e.g., RectorSeal Academy, JB Vacuum Pump Clinics, Mitsubishi ductless training), positioning technical education as a customer acquisition and retention lever.
The business model is a traditional regional wholesale distributor: margin on physical goods, supported by inventory breadth, credit-based house accounts, and last-mile logistics. Technology investment is limited to a standard eCommerce storefront and the MyTruck service platform; no proprietary AI, data, or platform technology is disclosed. The company has remained family-owned across multiple generations with no institutional investment, parent company, or M&A activity identified.
Duncan Supply Company firmographics
Firmographics- Name
- Duncan Supply Company
- Legal name
- Duncan Supply Company Inc.
- Website
- https://duncansupply.com
- Company type
- Private
- Founded year
- 1936
- Operating status
- Operating
- Headcount range
- 101–250 employees
- Short description
- Duncan Supply Company is a family-owned regional wholesale distributor founded in 1936, distributing HVAC/R and food service equipment parts and supplies from eight branches across Indiana, Central Illinois, Central Ohio, and Northern Kentucky to 3,500+ contractor accounts.
- Ownership category
- akta.pro rank
Where Duncan Supply Company is headquartered
LocationHeadquarters
- HQ city
- Indianapolis
- HQ country
- United States
- HQ region
- North America
Offices9 records
Markets served
Duncan Supply Company business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D, Infrastructure
Revenue model
- HVAC/R Equipment and Parts Distribution: Duncan Supply generates revenue through the wholesale distribution of refrigeration, air conditioning, heating equipment, and food service equipment parts and supplies. The company maintains a comprehensive $32 million inventory with over 40,000 items in stock ready for immediate delivery.
Go-to-market motion1 record
Distribution channels4 records
Marketing channels6 records
Duncan Supply Company product offering
Product offeringCore offering
Duncan Supply Company is a wholesale distributor that supplies HVAC, refrigeration, heating, and foodservice equipment parts and supplies to professional contractors and commercial operators. The company maintains a $32 million inventory of more than 40,000 items sourced from over 400 vendor relationships, and distributes products through branch counter locations, outside sales reps, an eCommerce platform, and a MyTruck mobile delivery service across Indiana, Central Illinois, Central Ohio, and Northern Kentucky.
Product overview
Duncan Supply Company is a wholesale distributor of HVAC, refrigeration, and food service equipment parts and supplies, operating since 1936. The company operates as a single unified distribution business rather than a platform-plus-modules architecture. Their comprehensive offering includes a $32 million inventory with over 40,000 items in stock from more than 400 vendor relationships, spanning refrigeration equipment, air conditioning equipment, heating equipment, and food service equipment parts and supplies. Key service offerings include eCommerce online ordering capabilities and the MyTruck truck stock service for sending properly stocked service vehicles to jobs. The company serves customers throughout Indiana, Central Illinois, Central Ohio, and Northern Kentucky.
Differentiator
Problem solved
Functional benefit
Brands
- MyTruck: Truck stock service allowing professionals to send a properly stocked truck to service calls
Products and services
- HVAC/R Equipment and Parts Distribution
Companies that use Duncan Supply Company
Customer profileSegments2 records
Ideal customer profiles2 records
Duncan Supply Company technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Duncan Supply Company partnerships and signals
Strategic signalPartnerships
Twelve partnerships are on record, tiered core.
- American StandardcoreAmerican Standard is a featured vendor whose heating and cooling products are distributed by Duncan Supply. Products include air conditioning systems, furnaces, and heat pumps for residential and commercial applications.
- CopelandcoreCopeland provides refrigeration condensing units and compressors that are part of Duncan Supply's product offerings. Key vendor for commercial refrigeration applications.
- Honeywell HomecoreHoneywell Home thermostats and controls are distributed through Duncan Supply for HVAC system installations and replacements.
- Johnson Controls / PenncoreJohnson Controls and Penn products including building automation controls and HVAC components are distributed through Duncan Supply's branch network.
- Bohn / HeatcraftcoreBohn and Heatcraft evaporators, condensing units, and refrigeration equipment are featured product lines at Duncan Supply for commercial refrigeration applications.
- ScotsmancoreScotsman ice machines and systems are distributed through Duncan Supply for commercial food service and hospitality applications.
- MitsubishicoreMitsubishi ductless and mini-split air conditioning systems are part of Duncan Supply's product portfolio, with dedicated training programs for dealers.
- SporlancoreSporlan expansion valves, driers, and refrigeration components are distributed through Duncan Supply's extensive branch network.
- Nu-CalgoncoreNu-Calgon coil cleaners, oils, and chemical products for HVAC/R maintenance are distributed through Duncan Supply.
- JB IndustriescoreJB Industries manufactures refrigeration tools and supplies including vacuum pumps, gauges, and hoses distributed by Duncan Supply. JB Vacuum Pump Clinics are hosted at Duncan Supply locations.
- RectorSealcoreRectorSeal offers HVAC installation supplies, coil cleaners, and specialty chemicals. Duncan Supply hosts RectorSeal Counter Days and training sessions including RectorSeal Academy programs.
- ChemourscoreChemours (Freon, Opteon refrigerants) supplies refrigerants to Duncan Supply for HVAC/R applications.
Scale indicators6 records
Recent moves5 records
Expansion highlights4 records
Duncan Supply Company competitors and assessment
Company assessmentDirect peers
- Johnstone Supply: Cooperative-style HVAC/R parts and equipment distributor with extensive branch network serving contractors; one of the largest competitors in the U.S. HVAC wholesale space and the most direct analogue to Duncan Supply's branch-counter, multi-vendor distribution model.
- Carrier Enterprise: Wholesale distribution arm of Carrier carrying HVAC equipment, parts, and controls through regional branches serving HVAC/R contractors; competes head-to-head with Duncan Supply on many of the same OEM brands (Carrier, Payne) and customer segments.
- Winsupply: Cooperative group of local HVAC, plumbing, and industrial distributors across the U.S.; similar business model combining local ownership/customer service with group purchasing scale and a comparable target customer base of contractors.
- Baker Distributing Company: Wholesale distributor of HVAC/R equipment, parts, and supplies with branch network across the Midwest, South, and East; Watsco-owned entity that competes with Duncan Supply for HVAC/R contractor accounts in overlapping geographies.
Broad incumbents
- Watsco: Publicly traded largest U.S. distributor of HVAC/R equipment, parts, and supplies through brands like Carrier Enterprise, GEMAIRE, and Baker Distributing; broad incumbent against which regional players like Duncan Supply compete on service and local relationships.
- Ferguson Enterprises: Large-scale plumbing, heating, and HVAC distribution enterprise serving contractors and commercial accounts; broader portfolio than Duncan Supply but overlapping strongly in commercial HVAC/R and foodservice plumbing supply categories.
- HD Supply Holdings: Large facility maintenance, repair, and operations distributor with HVAC/R and foodservice equipment categories serving commercial and multifamily end markets; broader MRO portfolio but overlapping product and contractor customer base.
Regional players
- APR Supply Co. Family-owned HVAC/R and plumbing wholesale distributor operating in the Mid-Atlantic and Northeast; similar model of multi-branch, relationship-driven distribution to contractors that competes on adjacent geographies.
Others
- True Value Company: Hardware cooperative that supplies independent retailers including some stock HVAC/R and plumbing parts at retail and small-contractor level; adjacent rather than direct competitive to Duncan Supply's commercial HVAC/R focus.
- CED (Consolidated Electrical Distributors): Electrical and control systems distributor serving contractors and industrial customers through a branch network; relevant adjacent peer given overlap in building controls, thermostats, and automation products supplied by Duncan Supply through partners like Honeywell and Johnson Controls.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks5 records
Key highlights7 records
Customer concentration
Duncan Supply Company social profiles
Digital presenceDuncan Supply Company financial estimates
Financial estimateRevenue estimate
Valuation estimate
Duncan Supply Company leadership team
Management profileNumber of profiles
Duncan Supply Company funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Duncan Supply Company 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 Duncan Supply Company
What does Duncan Supply Company do?
Duncan Supply Company is a wholesale distributor that supplies HVAC, refrigeration, heating, and foodservice equipment parts and supplies to professional contractors and commercial operators. The company maintains a $32 million inventory of more than 40,000 items sourced from over 400 vendor relationships, and distributes products through branch counter locations, outside sales reps, an eCommerce platform, and a MyTruck mobile delivery service across Indiana, Central Illinois, Central Ohio, and Northern Kentucky.
Is Duncan Supply Company a public or private company?
Duncan Supply Company is a private company. It is classified as family owned and is currently operating.
When was Duncan Supply Company founded?
Duncan Supply Company was founded in 1936. It employs 101 to 250 people.
Where is Duncan Supply Company based?
Duncan Supply Company is headquartered in Indianapolis, United States, in the North America region.
How does Duncan Supply Company make money?
One revenue line is on record: HVAC/R Equipment and Parts Distribution.
Who are Duncan Supply Company's main competitors?
Direct peers on record are Johnstone Supply, Carrier Enterprise, Winsupply and Baker Distributing Company. Broad incumbents are Watsco, Ferguson Enterprises and HD Supply Holdings. APR Supply Co. is listed as a regional player. Others are True Value Company and CED (Consolidated Electrical Distributors).
Does Duncan Supply Company have an API?
No public API is recorded for Duncan Supply Company.