HVAC & Plumbing Contractors NAICS 238220

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Industry Summary
The 105,000 HVAC and plumbing contractors in the US provide installation, repair, and maintenance services for air handling and water management systems. Just over 60% of HVAC and plumbing contractors are solo operators. Contractors may specialize in residential, commercial, institutional, or industrial service.
Dependence On Construction Industry
Demand for HVAC and plumbing services is highly dependent on trends in the construction industry.
Increasing Sophistication Of HVAC Systems
Demand for improved efficiency in the non-residential market has led to increasingly complex HVAC systems and automated monitoring programs.
Recent Developments
May 9, 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.
- US home builders are dangling more incentives to close deals amid a tepid spring home-buying season that is halfway over, according to The Wall Street Journal. Builders typically notch 40% of their annual sales during the spring, but mortgage rates that are stuck around 7% and a lack of affordability have reduced demand. Builders have increased incentives to bring buyers off the sidelines, including mortgage-rate buydowns, design upgrades, and price cuts. In the first two weeks of April, incentives offered by builders equaled 7.2% of the purchase price, up from 6.1% in January, according to data from John Burns Research & Consulting. Incentives are eating into builder profits during a season that usually sees few discounts, and prices tend to rise. Soft demand for new homes is expected to worsen as the effects of tariffs take hold, potentially adding between $5,000 and $15,000 to the cost of a new home.
- Demand for building design services declined in March compared to February, according to an April report by the American Institute of Architects (AIA). The AIA’s Architecture Billing Index (ABI) fell to 41.1 in March compared to February’s reading of 45.5. Any reading of 50 or more indicates growth in architectural billings. The score for new project inquiries fell to 47.7 in March compared to 47.8 in February, but the index for the value of new design contracts increased from 42 to 42.4. The AIA’s Chief Economist, Kermit Baker said, “Clients are increasingly cautious about starting projects due to uncertainty over future trends in interest rates and building materials costs, as well as the potential for an economic slowdown. Unfortunately, this softness in firm billings is likely to continue as indicators of future work remain weak, however, the average project backlog at firms stands at a reasonably healthy 6.5 months, offering a bit of a buffer if future project work continues to remain soft.”
- 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
HVAC & Plumbing Contractors

Industry Structure
Industry size & Structure
The average plumbing and HVAC contractor employs 11 workers and generates about $2 million in annual revenue.
- The HVAC and plumbing contractor industry consists of 105,000 companies (including solo operators), employs more than 1.2 million workers and generates $218 billion annually.
- Just over 60% of HVAC and plumbing contractors are solo operators and generate about $65,200 annually.
- Major customer segments include single family homes (20% of industry business), office buildings (10%), manufacturing and industrial buildings (5%), educational buildings (8%), commercial buildings (7%), health care and institutional buildings (6%), and apartment buildings (4%).
- Large companies include EMCOR Group, Comfort Systems USA, Johnson Controls, and ARS Rescue Rooter.
Industry Forecast
Industry Forecast
HVAC & Plumbing Contractors Industry Growth

Source: Vertical IQ and Inforum
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