Hayes Mechanical, LLC.

Mechanical Contracting Serviceshayesmechanical.com

Hayes Mechanical is a privately held, union-affiliated full-service mechanical contractor founded in 1918, providing commercial and industrial HVAC, plumbing, boiler, piping, and building automation services from seven U.S. branches across 10 states.

Company typePrivate
Founded1918
HeadquartersChicago, United States
Headcount501–1,000
GTM typeB2B
OfferingServices

What Hayes Mechanical, LLC. does

Hayes Mechanical, LLC. is a privately held, union-affiliated full-service mechanical contractor founded in 1918 and headquartered in Chicago, Illinois. The company designs, installs, services, and maintains commercial and industrial mechanical systems spanning HVAC, commercial and industrial boilers, plumbing, process and power piping, sheet metal and ductwork, industrial fans and ventilation, millwright services, water and wastewater systems, and building automation controls. Its skilled trades workforce includes boilermakers, pipefitters, HVAC service technicians, plumbers, electricians, iron workers, millwrights, and laborers deployed across 10 U.S. states.

Hayes operates through seven staffed branch offices—Chicago (headquarters), Omaha, Phoenix, Minneapolis, Pittsburgh, St. Louis, and Saginaw—with service coverage extending 100–300 miles from each location. Customers include commercial facilities (offices, high-rise buildings, restaurants, medical facilities, theaters, museums, and data rooms) and industrial operators (manufacturing plants, refineries, chemical plants, gas processing facilities, wastewater treatment plants, and power generating plants). The company is differentiated by 24/7/365 emergency response capability, verified safety prequalifications across eight third-party platforms (ISNetWorld, Avetta, Veriforce, GRMS, Compass, Vertikal, TradeAPP, Building Connected), and the Hayes University educational content platform.

Revenue is generated through three primary streams: time-and-material service and repair work billed per invoice, recurring preventative maintenance agreements on annual subscription terms with annual price escalation clauses, and project installation work on fixed-price quotation terms with progress payments. The company is privately held with no disclosed outside funding, no parent company, and no public market listing, having remained under continuous private ownership since founding.

Hayes Mechanical, LLC. firmographics

Firmographics

Name: Hayes Mechanical, LLC.
Legal name: Hayes Mechanical, LLC.
Website: https://hayesmechanical.com
Company type: Private
Founded year: 1918
Operating status: Operating
Headcount range: 501–1,000 employees
Short description: Hayes Mechanical is a privately held, union-affiliated full-service mechanical contractor founded in 1918, providing commercial and industrial HVAC, plumbing, boiler, piping, and building automation services from seven U.S. branches across 10 states.
Ownership category
akta.pro rank

Hayes Mechanical, LLC. industry classification

Industry

Product category: Mechanical Contracting Services
NAICS: Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822), Electrical Contractors and Other Wiring Installation Contractors (23821), Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance (8113)
SIC: Electrical Work (1731), Services-Miscellaneous Repair Services (7600)
akta.pro primary industry: Industrial/Process Piping & Mechanical Contracting (IMAFALAG)
akta.pro secondary industries: Electrical Systems Maintenance (LV/MV, Switchgear, UPS) (BPABACAC), Mechanical Maintenance & Millwright Services (Rotating/Static Equipment) (IMAIACAB)

Keywords

Commercial HVAC services
Industrial mechanical contracting
Boiler repair services
Commercial plumbing services
Building automation systems

Where Hayes Mechanical, LLC. is headquartered

Location

Headquarters

HQ city: Chicago
HQ country: United States
HQ region: North America

Offices7 records

Markets served

Hayes Mechanical, LLC. business model

Business model

GTM type: B2B
Offering type: Services
Cost components: Personnel, Operations, Marketing or Sales, Supply Chain, Infrastructure, Technology or R&D

Revenue model

Service and Repair: On-demand service and repair work for HVAC, boilers, plumbing, and piping systems. Billed on time and material basis or fixed price per quotes. Work performed at customer facilities.
Preventative Maintenance Agreements: Annual service agreements providing regular maintenance coverage for commercial and industrial mechanical systems. Price subject to annual adjustment to reflect labor, material, and cost increases.
Project Installation: New installation and construction projects for mechanical systems including HVAC, boilers, plumbing, and piping. Typically project-based with progress payments during execution.

Pricing tiers

Model	Billing	Price
Subscription	Annual	Full Service Maintenance Agreement - Annual coverage with scheduled maintenance visits
Other	Pay-as-you-go	Time and Material Service Work - Billed at current rates for labor and materials
Other	Pay-as-you-go	Service Quote - Fixed price proposals for defined scope of work

Go-to-market motion1 record

Distribution channels1 record

Marketing channels5 records

Hayes Mechanical, LLC. product offering

Product offering

Core offering

Hayes Mechanical, LLC. is a full-service mechanical contractor providing installation, repair, and maintenance of HVAC, plumbing, boiler, piping, sheet metal, and building automation systems for commercial and industrial facilities. The company dispatches union-trained technicians (boilermakers, pipefitters, HVAC technicians, plumbers, electricians, millwrights) from regional offices to customer sites, with 24/7 emergency response and recurring preventative maintenance agreements.

Product overview

Hayes Mechanical, LLC. is a full-service mechanical contractor offering a comprehensive portfolio of commercial and industrial mechanical services. The company's core offerings span Commercial HVAC (installation, repair, maintenance), Commercial Plumbing, Commercial Boiler Repair, Commercial Piping, Commercial Sheet Metal, Industrial Piping, Industrial HVAC, Industrial Plumbing, Industrial Boiler Repair, Industrial Maintenance, Industrial Fans/Ventilation, Millwright Services, and Water/Wastewater Systems. Additional services include Building Automation (BAS), Electrical, 24-Hour Emergency Service, Preventative Maintenance Agreements, and Utility and Energy Rebate assistance. The company also operates Hayes University, an educational resource providing video series and classes on mechanical system topics. Hayes Mechanical serves commercial clients (offices, plants, restaurants, high-rise buildings, museums, theaters, data/server rooms) and industrial clients (refineries, manufacturing plants, chemical plants, wastewater treatment facilities, power generating plants) across multiple U.S. locations.

Differentiator

Problem solved

Functional benefit

Products and services

Commercial HVAC Services

Companies that use Hayes Mechanical, LLC.

Customer profile

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Hayes Mechanical, LLC. technology and API

Technology

Technology focussed No

API detail

Has API: No
API docs
API detail

Core technology

AI maturity

App detail

Hayes Mechanical, LLC. partnerships and signals

Strategic signal

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Hayes Mechanical, LLC. competitors and assessment

Company assessment

Direct peers

Limbach Holdings: Limbach is a publicly traded mechanical systems provider offering HVAC, plumbing, and building services to commercial and institutional customers. Its segment structure (construction + service) and customer mix closely parallel Hayes Mechanical's commercial/industrial mechanical contracting model.
Southland Industries: Southland Industries is a large privately held mechanical contractor providing HVAC, plumbing, piping, and building automation across commercial, industrial, and institutional markets. Its full-service mechanical offering and integrated project-delivery model are closely comparable to Hayes Mechanical's services.
TDIndustries: TDIndustries is a large privately held mechanical and facility services contractor based in Texas, providing HVAC, plumbing, and building services to commercial and industrial customers. Its full-service mechanical model and service/maintenance emphasis closely parallel Hayes Mechanical's offerings.
McKinstry: McKinstry is a privately held design-build mechanical, electrical, and plumbing firm with strong building automation and energy-efficiency capabilities. Its commercial mechanical services, BAS offerings, and energy rebate expertise overlap directly with Hayes Mechanical's commercial HVAC, building automation, and utility rebate services.
U.S. Engineering Company Holdings: U.S. Engineering is one of the largest privately held mechanical contractors in the U.S., with commercial HVAC, plumbing, piping, and service operations. It mirrors Hayes Mechanical's full-service mechanical model and competes directly in the Midwest and other regional markets.
Comfort Systems USA: Comfort Systems USA is a publicly traded national mechanical contractor specializing in commercial HVAC, plumbing, and building automation installation, service, and maintenance. Its service/maintenance-heavy mix and operating model map closely to Hayes Mechanical's commercial HVAC, plumbing, and preventative maintenance agreement business.
Harris Companies: Harris Companies is a large privately held mechanical contractor headquartered in Minnesota providing HVAC, plumbing, piping, and service across commercial and industrial markets. It is a direct Midwest-based competitor to Hayes Mechanical's Minneapolis and Chicago operations.
Murphy Company: Murphy Company is a St. Louis-based mechanical contractor providing HVAC, plumbing, piping, and process piping for commercial and industrial customers. It competes head-to-head with Hayes Mechanical's St. Louis office and shares the same union-based, full-service mechanical contracting model.

Broad incumbents

EMCOR Group: EMCOR is a publicly traded Fortune 500 provider of mechanical and electrical construction, building, and industrial services. It is the largest publicly listed mechanical contractor in the U.S., operating across HVAC, plumbing, piping, and building automation — directly overlapping Hayes Mechanical's full-service commercial and industrial offering at much greater scale.
APi Group: APi Group is a publicly traded holding company of safety, specialty, and industrial services businesses, including mechanical contracting and HVAC service operations. While broader than Hayes, its mechanical services subsidiaries compete head-to-head for commercial and industrial mechanical contracts in overlapping geographies.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Hayes Mechanical, LLC. compliance and trust

Trust signal

Compliance8 records

Hayes Mechanical, LLC. financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Hayes Mechanical, LLC. leadership team

Management profile

Number of profiles

Profiles1 record

Hayes Mechanical, LLC. funding detail

Funding detail

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Hayes Mechanical, LLC. M&A and investment

M&A and investment

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Hayes Mechanical, LLC.

What does Hayes Mechanical, LLC. do?

Is Hayes Mechanical, LLC. a public or private company?

Hayes Mechanical, LLC. is a private company. It is classified as family owned and is currently operating.

When was Hayes Mechanical, LLC. founded?

Hayes Mechanical, LLC. was founded in 1918. It employs 501 to 1,000 people.

Where is Hayes Mechanical, LLC. based?

Hayes Mechanical, LLC. is headquartered in Chicago, United States, in the North America region.

How does Hayes Mechanical, LLC. make money?

Three revenue lines are on record. Service and Repair is the primary driver. The others are preventative Maintenance Agreements and project Installation.

Who are Hayes Mechanical, LLC.'s main competitors?

Direct peers on record are Limbach Holdings, Southland Industries, TDIndustries, McKinstry, U.S. Engineering Company Holdings, Comfort Systems USA, Harris Companies and Murphy Company. Broad incumbents are EMCOR Group and APi Group.

Does Hayes Mechanical, LLC. have an API?

No public API is recorded for Hayes Mechanical, LLC..

What industry is Hayes Mechanical, LLC. in?

Hayes Mechanical, LLC.'s product category is Mechanical Contracting Services. Its primary akta.pro industry code is IMAFALAG, Industrial/Process Piping & Mechanical Contracting, with a secondary code of BPABACAC, Electrical Systems Maintenance (LV/MV, Switchgear, UPS). Its NAICS code is 238220 and its SIC code is 1731.