American Mechanical Services
American Mechanical Services is a 100% employee-owned commercial HVAC service and construction company operating across 10 locations in 6 states. It provides HVAC maintenance, construction, plumbing, and building automation services to enterprise, institutional, and government customers.
- Company typePrivate
- Founded1997
- HeadquartersLaurel, United States
- Headcount501–1,000
- GTM typeB2B
- OfferingServices
What American Mechanical Services does
American Mechanical Services (AMS) is a privately held, 100% employee-owned (ESOP, since 2017) commercial mechanical services contractor headquartered in Laurel, Maryland, operating through 10 affiliated subsidiaries across California, Colorado, Indiana, Maryland, Texas, and Virginia. The company delivers an integrated suite of HVAC services — including 24/7 emergency service, four-tier custom maintenance programs, design-build construction, plumbing, and building automation and controls — to enterprise, institutional, and government customers, with named clients spanning broadcasting (BET Networks), sports venues (FedEx Field), banking (Wells Fargo), manufacturing, property management, and federal facilities accessed via GSA Schedule contracting.
The business model blends recurring subscription-style service contracts (multi-year maintenance agreements, four tiered plans from inspection through comprehensive maintenance) with episodic project revenue (new installations, retrofits, design-build work, plumbing renovations, controls upgrades across legacy BMS platforms including Johnson Controls, Honeywell, Carrier, Novar, Alerton, and Trend). Distribution is direct enterprise field sales with dedicated service departments at each location, on-call technician fleets, and a union-trained workforce supplied through a signatory agreement with United Association of Steamfitters Local 602.
AMS generates consistent revenues exceeding $30 million per year at the Maryland entity alone, with the broader group estimated in the $100M-$250M range across roughly 500-1,000 employees. Revenue streams derive from HVAC service and maintenance (subscription/recurring), construction and installation (one-time projects), plumbing services, and building controls services. Customer segments are horizontal — primarily commercial property managers, building owners, and general contractors — with vertical overlays in government/military and high-end commercial buildings including data centers, healthcare, and high-rise/hotel properties.
American Mechanical Services firmographics
Firmographics- Name
- American Mechanical Services
- Legal name
- American Mechanical Services
- Website
- https://amsofusa.com
- Company type
- Private
- Founded year
- 1997
- Operating status
- Operating
- Headcount range
- 501–1,000 employees
- Short description
- American Mechanical Services is a 100% employee-owned commercial HVAC service and construction company operating across 10 locations in 6 states. It provides HVAC maintenance, construction, plumbing, and building automation services to enterprise, institutional, and government customers.
- Ownership category
- akta.pro rank
American Mechanical Services industry classification
Industry- Product category
- Commercial HVAC Services
- NAICS
- Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance (8113)
- SIC
- Services-Miscellaneous Repair Services (7600)
- akta.pro primary industry
- HVAC Installation, Service & Repair (IMAIABAA)
- akta.pro secondary industry
- Commercial HVAC Maintenance Agreements & PM Programs (HSAOAHAJ)
Keywords
Where American Mechanical Services is headquartered
LocationHeadquarters
- HQ city
- Laurel
- HQ country
- United States
- HQ region
- North America
Offices10 records
Markets served
American Mechanical Services business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Supply Chain, Infrastructure, Technology or R&D, Marketing or Sales
Revenue model
- HVAC Service and Maintenance: Recurring service contracts and maintenance agreements for commercial HVAC systems. The company offers customized maintenance plans tailored to customer needs, providing recurring revenue through service agreements.
- Construction and Installation: One-time construction projects including modifications to existing HVAC systems, new installations, design-build solutions, and complex construction and repair projects involving renovation and retrofitting of buildings.
- Plumbing Services: Plumbing services ranging from routine repairs to major underground pipe renovations, including remodels, retrofits, pipe repair, drain maintenance, and emergency service.
- Building Controls Services: Building automation and controls services including maintenance, upgrades, replacements, and new system installation for sophisticated modern facilities.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Multi-year contract | Custom service plans tailored to customer needs |
Go-to-market motion2 records
Distribution channels3 records
Marketing channels3 records
American Mechanical Services product offering
Product offeringCore offering
American Mechanical Services is a privately owned family of companies providing commercial HVAC service, maintenance, and construction work, along with plumbing and building automation/controls services. The company specializes in high-quality HVAC maintenance on mechanical building systems and complex construction and repair projects involving renovation and retrofitting of older and occupied commercial structures, both public and private. Operations span 10 affiliated entities across 6 states, with 24/7 emergency service availability and dedicated service departments at each location.
Product overview
American Mechanical Services (AMS) is a commercial HVAC service and construction company offering a portfolio of integrated mechanical services. The core offerings include Service Solutions (diagnostic and emergency HVAC repair), Maintenance Programs (four custom service plans from inspection to comprehensive maintenance), Construction Services (design-build and plan-spec HVAC installation), Plumbing Services (full-service commercial plumbing), and Building Automation & Controls (management and servicing of building control systems from brands like Johnson Controls, Honeywell, and Carrier). The company also provides services through a GSA Schedule for government clients. These products function as a unified service offering, with the maintenance and service programs forming the foundation while construction and building automation services provide specialized capabilities. AMS operates as a family of companies across multiple locations, serving commercial, industrial, and government clients throughout the United States.
Differentiator
Problem solved
Functional benefit
Products and services
- Service Solutions
Quantifiable outcome
- Response time of 1 hour or less for emergency calls, 24/7 availability including holidays
- +3 more outcomes
Companies that use American Mechanical Services
Customer profileNamed customers10 records
Segments5 records
Ideal customer profiles4 records
American Mechanical Services technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature4 records
American Mechanical Services partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and minor.
- United Association of Steamfitters Local 602coreAMS of Maryland is a signatory to a trade agreement with United Association of Steamfitters Local 602, drawing technicians from the 602's skilled labor pool. This enables rapid force multiplication as circumstances demand.
- ServiceMasterminorAMS was acquired by ServiceMaster in 1999 and operated as a wholly-owned subsidiary until 2006 when Ed Dunn and Dave Schellhardt formed a parent company to acquire AMS from ServiceMaster.
- National Safety Council (NSC)minorAMS is a member of the National Safety Council, supporting the company's commitment to safety excellence and best practice sharing.
- Network for Employers for Traffic Safety (NETS)minorAMS is a member of NETS, supporting workplace traffic safety initiatives.
Scale indicators8 records
Recent moves8 records
Expansion highlights5 records
American Mechanical Services competitors and assessment
Company assessmentDirect peers
- EMCOR Group: Largest publicly traded U.S. mechanical and electrical construction and facilities services provider. Directly comparable to AMS across commercial HVAC service, construction, and building automation, but at vastly greater scale and geographic breadth.
- Limbach Holdings: Public specialty mechanical services contractor focused on HVAC, plumbing, and building automation for commercial and institutional customers. Most directly comparable in customer profile, recurring service mix, and controls expertise.
- Lee Company: Private multi-state mechanical services and building automation provider in the Southeast U.S. Closely comparable in commercial HVAC service, plumbing, and controls mix, though concentrated in different geographies.
- Service Logic: Private-equity-backed national HVAC and mechanical services platform built by rolling up regional contractors. Closely comparable operating model, and a likely roll-up competitor or acquirer for AMS given ESOP liquidity dynamics.
- Comfort Systems USA: Public national HVAC mechanical services and construction company operating through regional subsidiaries. Closely mirrors AMS's model of decentralized operating units delivering commercial HVAC service, maintenance, and installation.
Broad incumbents
- Carrier Global: Major HVAC OEM with expanding service, controls, and energy services businesses. AMS services Carrier controls as a partner, but Carrier's direct service expansion is a structural threat to independents like AMS.
- Johnson Controls: Global building automation and HVAC OEM with a substantial services and controls installation footprint. AMS services Johnson Controls systems; JCI is both a channel partner and a competitive threat as it expands direct service.
- BGIS: Large facility management and building services provider serving commercial, government, and industrial clients. Overlaps with AMS in HVAC maintenance and facilities services, but with broader integrated FM offerings.
- Trane Technologies: Global HVAC equipment manufacturer with growing service and controls offerings. Competes with AMS for service contracts on its own installed base and represents the OEM vertical-integration risk for independent service providers.
- APi Group: Diversified safety, specialty, and industrial services platform. Overlaps with AMS in mechanical services and facility support, but operates far more broadly across life safety, security, and specialty industrial services.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat5 records
Key risks6 records
Key highlights7 records
Customer concentration
American Mechanical Services social profiles
Digital presenceAmerican Mechanical Services financial estimates
Financial estimateRevenue estimate
Valuation estimate
American Mechanical Services leadership team
Management profileNumber of profiles
Profiles16 records
American Mechanical Services subsidiaries and ownership
Company hierarchySubsidiaries10 records
American Mechanical Services funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
American Mechanical Services 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 American Mechanical Services
What does American Mechanical Services do?
American Mechanical Services is a privately owned family of companies providing commercial HVAC service, maintenance, and construction work, along with plumbing and building automation/controls services. The company specializes in high-quality HVAC maintenance on mechanical building systems and complex construction and repair projects involving renovation and retrofitting of older and occupied commercial structures, both public and private. Operations span 10 affiliated entities across 6 states, with 24/7 emergency service availability and dedicated service departments at each location.
Is American Mechanical Services a public or private company?
American Mechanical Services is a private company. It is classified as management employee owned and is currently operating.
When was American Mechanical Services founded?
American Mechanical Services was founded in 1997. It employs 501 to 1,000 people.
Where is American Mechanical Services based?
American Mechanical Services is headquartered in Laurel, United States, in the North America region.
How does American Mechanical Services make money?
Four revenue lines are on record. HVAC Service and Maintenance is the primary driver. The others are construction and Installation, plumbing Services and building Controls Services.
Who are American Mechanical Services's main competitors?
Direct peers on record are EMCOR Group, Limbach Holdings, Lee Company, Service Logic and Comfort Systems USA. Broad incumbents are Carrier Global, Johnson Controls, BGIS, Trane Technologies and APi Group.
Does American Mechanical Services have an API?
No public API is recorded for American Mechanical Services.
What industry is American Mechanical Services in?
American Mechanical Services's product category is Commercial HVAC Services. Its primary akta.pro industry code is IMAIABAA, HVAC Installation, Service & Repair, with a secondary code of HSAOAHAJ, Commercial HVAC Maintenance Agreements & PM Programs. Its NAICS code is 8113 and its SIC code is 7600.