Hardware, Plumbing & HVAC Distributors NAICS 4237

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Industry Summary
The 9,600 hardware, plumbing, and HVAC/R distributors in the US consolidate a variety of products from many different manufacturers to offer customers wide selection, reasonable prices, and a single point of contact. Distributors may sell a combination of product categories or specialize.
Construction Drives Demand
Hardware, plumbing, and HVAC distributors depend on construction projects as major sources of revenue.
Consolidation Continues
Distributors continue to expand into new industries and geographical markets or gain market share via acquisitions.
Recent Developments
Apr 25, 2025 - Tariffs to Increase Plumbing, HVAC Equipment Prices
- The Trump administration’s tariff policies will likely increase prices for plumbing supplies and HVAC equipment, according to Facilities Dive. On April 9, the Trump administration paused its reciprocal tariff agenda for 90 days for most countries but left in place a baseline 10% import duty on all countries except China, which faces total tariffs of 145%. Canada and Mexico are not subject to the new 10% baseline tariffs, and goods trading under the US-Mexico-Canada Agreement will remain duty-free. The president of government affairs of the Heating, Air Conditioning, and Refrigeration Distributors International said in a statement that the tariffs will affect eight of the top 10 exporters of HVACR equipment to the US, and that any increased costs would likely be passed on to consumers.
- In an April report, National Association of Home Builders analysis of US Census Bureau data showed that nearly half of owner-occupied homes were built before 1980. In 2023, the median age of owner-occupied homes reached 41 years, up from 31 years in 2005. Median home age has increased since the Great Recession, when new housing production dropped dramatically. Since then, home building activity has not kept pace with demand. US homes require more maintenance and repairs as they age, driving remodeling spending. The lock-in effect of low mortgage rates during the pandemic is also prompting homeowners to renovate rather than move and face a higher interest rate. The aging of the US housing stock is likely to drive ongoing demand for hardware, plumbing, and HVAC supplies and equipment.
- Home builder confidence in the single-family market remained in negative territory in April 2025 amid mounting concerns about tariff threats, higher input costs, and economic uncertainty, according to the National Association of Home Builders (NAHB). As measured by the NAHB/Wells Fargo Housing Market Index (HMI), home builder sentiment rose one point to 40 in March from 39 the previous month. Any HMI reading over 50 indicates that more builders see conditions as good than poor. Builders face headwinds, including high materials costs being made worse by trade strife and labor and lot shortages. Trade policy uncertainty makes it difficult for builders to price homes accurately and engage in basic business planning.
- North American construction and engineering spending in 2025 is expected to grow by 3% after increasing an estimated 7% in 2024, according to FMI’s second-quarter 2025 North American Engineering and Construction Outlook. Nonresidential building construction spending is forecast to be flat in 2025 as growth in amusement and recreation (+7%), transportation (+3%), public safety (+3%), and educational (+3%) is offset by weakness in commercial (-7%), lodging (-5%), and manufacturing (-1%). Amid high mortgage interest rates and a lack of affordability, single-family construction spending is forecast to rise by 3% in 2025. A recent jump in new apartment supply and unfavorable cost conditions will reduce multifamily spending by 12% in 2025.
Industry Revenue
Hardware, Plumbing & HVAC Distributors

Industry Structure
Industry size & Structure
A typical hardware, plumbing, HVAC and refrigeration distributor operates out of a single location, employs about 32 workers, and generates $24 million annually.
- The hardware, plumbing, and HVAC/R distributor industry consists of 9,600 companies, employs 310,000 workers, and generates about $231 billion annually.
- Most distributors are small, independent operations - 52% operate out of a single location and 79% have fewer than 20 workers.
- Customers include building contractors, residential and commercial builders, dealers, hardware retailers, government accounts, and industrial and institutional customers.
- Large companies include Ace Hardware, Ferguson, MRC Global, Hajoca, Watsco, DNOW (formerly NOW Inc.), and HD Supply.
Industry Forecast
Industry Forecast
Hardware, Plumbing & HVAC Distributors Industry Growth

Source: Vertical IQ and Inforum
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