Watsco — Business Overview
What does Watsco do?
Watsco is the largest distributor of HVAC/R products in North America, acting as the crucial link between equipment manufacturers and the contractors who install and repair systems. The company does not manufacture anything itself. Instead, it buys air conditioning, heating, and refrigeration equipment, parts, and supplies from manufacturers and resells them through its network of 695 locations to more than 130,000 licensed contractors. Those contractors then install or service systems in homes and businesses. Watsco generated $7.2 billion in revenue in 2025.
The product mix breaks down into three main categories:
| Product Category | Share of 2025 Revenue | Description |
|---|---|---|
| HVAC equipment | 67% | Residential and commercial air conditioners, heat pumps, furnaces, ductless systems |
| Other HVAC products | 29% | Parts, supplies, ductwork, insulation, thermostats, refrigerants, tools |
| Commercial refrigeration | 4% | Condensing units, compressors, evaporators, walk-in coolers, ice machines |
How does Watsco make money?
Watsco earns money on the spread between what it pays manufacturers for products and what it charges contractors. As a pure-play distributor, its revenue model is straightforward: buy from roughly 20 HVAC equipment vendors and over 1,300 parts and supplies vendors, stock those products across its warehouse network, and sell them quickly to time-sensitive customers who need parts on short notice. Speed, inventory availability, and location density are central to its value proposition.
A key structural advantage is its deep supplier relationships, particularly with Carrier Global Corporation. Carrier alone accounts for 62% of Watsco's purchases, and the two companies operate four joint ventures together, which collectively represented 53% of Watsco's 2025 revenues. While this creates meaningful supplier concentration risk, it also reflects the depth of the commercial partnership. Watsco holds 60–80% controlling interests in each of these ventures, consolidating their financials fully.
What market does Watsco operate in?
The HVAC/R distribution industry is large, fragmented, and tied to a steady replacement cycle. The U.S. wholesale distribution market is estimated at $74 billion annually, while the broader installed-basis market — including contractor labor — is approximately $156 billion. The industry is mature in the U.S. and Canada but growing in Latin America and the Caribbean as those economies expand.
A powerful secular tailwind comes from the aging installed base of residential systems. The U.S. has approximately 102 million central air conditioning and heating systems that have been in service for more than 10 years, many operating below current minimum efficiency standards. Watsco estimates the residential replacement market represents 80–90% of industry unit sales in the U.S. Equipment typically lasts 8–20 years depending on climate and usage, creating a predictable demand cycle. Regulatory-driven efficiency upgrades (rising SEER minimums) further accelerate replacement demand and lift average selling prices over time.
A near-term headwind is the ongoing refrigerant transition. New EPA rules banned the use of older R-410A refrigerant in new equipment manufactured after December 31, 2024, requiring a shift to lower-global-warming-potential A2L refrigerants. Watsco began transitioning its inventory in late 2024. Additionally, tariffs on products assembled or sourced in Mexico and China — where major manufacturers have significant operations — are adding cost pressure to the supply chain.
Who are Watsco's main competitors?
The HVAC/R distribution industry has more than 2,100 distribution companies, making it highly fragmented — which is both a competitive challenge and an acquisition opportunity for Watsco. Competitors include smaller regional and local distributors as well as factory-owned distribution networks operated by manufacturers like Carrier, Daikin, Trane, and Lennox directly. No single competitor is named as a dominant nationwide rival at Watsco's scale.
Watsco's claimed competitive advantages stem from scale, density, and technology. The company argues that smaller, less-capitalized distributors cannot match its inventory depth, location density, product breadth, or technology investment. It employs roughly 300 technology staff and has built mobile apps, e-commerce platforms, pricing optimization tools, and AI-driven systems to serve contractors more efficiently. Watsco also operates OnCall Air, a digital sales platform designed to help contractor customers grow their own businesses. Against factory-owned distribution networks, Watsco argues it carries a broader mix of parts and supplies and has more warehouse locations, making it better suited to the time-sensitive replacement market.
Where does Watsco operate?
Watsco is predominantly a U.S. business, with meaningful but smaller operations in Canada and Latin America. The geographic revenue split in 2025 was 90% United States, 5% Canada, and 5% Latin America and the Caribbean. Of its 695 locations, 637 are in the U.S., 34 in Canada, 16 in Puerto Rico, and 8 in Mexico.
Within the U.S., Watsco is heavily concentrated in Sun Belt states where hot climates drive higher HVAC usage and faster replacement cycles. Florida (102 locations) and Texas (89 locations) are by far the largest markets, followed by North Carolina (54) and South Carolina (53). This regional focus is intentional — warmer climates shorten equipment lifespans and generate more frequent replacement demand.
Tariff exposure is a notable geopolitical risk flagged in the filing. Many of Watsco's key suppliers, including Carrier and Rheem, assemble products in Mexico or source components from China. Potential tariff increases or changes to the U.S.-Mexico-Canada Agreement could raise Watsco's product costs meaningfully. The company has responded with pricing actions enabled by its technology platforms, but acknowledges that sustained cost increases could reduce sales volume if prices rise too high for customers.