A.D. Winston

What A.D. Winston does

A.D. Winston Corporation is a privately held mechanical contracting firm headquartered in Long Island City, New York, that designs, installs, and services heating, ventilation, air conditioning, and refrigeration systems for commercial, institutional, hospitality, and high-rise residential properties across the New York metropolitan area. Founded in 1958 by Arthur D. Winston, the company has accumulated over $500 million in completed HVAC installations across more than 65 years of continuous operation, with marquee projects at the New York Stock Exchange, Columbia University, Mount Sinai, Madison Square Garden, Carnegie Hall, CBS Headquarters, Bank of New York, Hilton Grand Vacation Club, and high-end retail accounts including Prada and Ralph Lauren.

The company operates in-house design and engineering capabilities using 3D modeling, Building Information Modeling (BIM), and CAD tools, with a dedicated drafting department running QuickPen Pipe Designer 3D software. Field installation is performed by steamfitters from Enterprise Association Local 638, supporting quality differentiation in the unionized NYC labor market, and the company maintains LEED-certified staff for sustainability advisory work. Specialized capabilities include cogeneration plant design and installation, boiler and chiller plant replacement with temporary equipment to maintain building operations, and full design/build project delivery staffed by in-house Professional Engineers.

The business generates revenue through two primary streams. First, project-based HVAC installation contracts are acquired via competitive bidding and direct engagement with general contractors (including Turner Construction and Tishman Construction), construction managers, property owners, and developers, with custom pricing driven by project scope and a $50 million bonding capacity enabling large-scale pursuits. Second, a 24/7 HVAC service organization (adwinstonservice.com) generates recurring maintenance, repair, and emergency response revenue from the same institutional, hospitality, commercial, and retail customer base. The company maintains industry affiliations with MCA, MCAA, BTEA, ASHRAE, NYBC, MSCA, and the Building and Construction Trades Council, with President Sal Barbera (45 years of industry experience) holding board and council positions at MCA, BTEA, and NYBC.

Name

A.D. Winston

Legal name

A.D. Winston Corporation

Website

https://adwinstoncorp.com

Company type

Private

Founded year

1958

Operating status

Operating

Headcount range

11–50 employees

Short description

A.D. Winston Corporation is a privately held New York City-based HVAC mechanical contractor, founded in 1958, specializing in design, installation, and 24/7 service for commercial, institutional, hospitality, and high-rise building clients across the New York metropolitan area.

Ownership category

akta.pro rank

Product category

HVAC Mechanical Contracting Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

Keywords

• Mechanical contracting services
• HVAC installation
• HVAC service maintenance
• Commercial HVAC contractor
• Design build HVAC

Headquarters

HQ city

Long Island City

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. HVAC Installation Projects: One-time project-based revenue from HVAC installation, replacement, and alteration projects for commercial, institutional, and residential properties. Revenue is earned through competitive bidding on construction contracts and direct engagement with general contractors and property owners.
2. HVAC Service and Maintenance: Recurring service revenue from 24/7 HVAC service operations providing ongoing maintenance, repair, and emergency services for installed systems. Service is offered to the same customer base including building owners and property managers.

Pricing tiers

Go-to-market motion1 record

Distribution channels2 records

Marketing channels1 record

Core offering

A.D. Winston Corporation is a mechanical contracting firm that designs, installs, and services air conditioning, refrigeration, and heating systems for commercial, institutional, residential, and industrial properties in the New York metropolitan area. The company offers a complete HVAC project lifecycle including design/build engineering, installation, replacement, and 24/7 service and maintenance, with cumulative installation value exceeding $500 million since its 1958 founding.

Product overview

A.D. Winston Corporation is a mechanical contracting firm specializing in HVAC (heating, ventilation, and air conditioning) installation and service. Founded in 1958, the company offers a unified service portfolio centered on HVAC Installation Services as its core offering, supplemented by a 24-hour HVAC Service division for ongoing maintenance. The company also provides Design/Build Projects with in-house engineering capabilities, specialized installations including Cogeneration Plant Installation and Boiler and Chiller Plant Replacement, and LEED-Certified Sustainability Consulting. The portfolio is unified under the company's own service organization, operating on a 24/7 basis with the same quality standards as the construction division.

Differentiator

Problem solved

Functional benefit

Products and services

• HVAC Installation Services Design, installation, and maintenance of air conditioning, refrigeration, and heating systems for commercial, institutional, residential, and industrial properties in the New York metropolitan area. The company has installed over half a billion dollars worth of work since its founding in 1958.
• 24/7 HVAC Service and Maintenance 24-hour, seven-day HVAC service organization offering maintenance and emergency repair services for installed systems, providing personal service matching the construction division's quality standards. Service is offered to building owners and property managers.
• Design/Build HVAC Projects Complete design/build HVAC projects including mechanical drawings, Building Department work, and value engineering, delivered by a staff of Professional Engineers.
• Cogeneration Plant Installation Design and installation of cogeneration plants for major New York City office buildings, representing specialized 'one of a kind' construction work that exercises out-of-the-box capabilities.
• Boiler and Chiller Plant Replacement Complete replacement of boiler and chiller plants with temporary equipment installation to maintain building operations during construction.
• LEED-Certified Sustainability Consulting Energy conservation and sustainability guidance provided by LEED-Certified staff for environmentally conscious building projects.

Quantifiable outcome

• Over $500 million in completed HVAC installations over 65+ years of operation
• +1 more outcomes

Named customers15 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Mechanical Contractors of NY (MCA)coreOthersIndustry membership organization for mechanical contractors in New York. A.D. Winston President Sal Barbera serves on the Board of Directors and was past President of the MCA.
• Mechanical Contracting of America (MCAA)minorOthersNational trade association for mechanical contractors. A.D. Winston maintains membership for industry networking and best practices.
• Building Trade Employers Assoc. (BTEA)coreOthersIndustry association representing building trade employers. A.D. Winston President Sal Barbera serves on the Board of Directors.
• Building and Construction Trades CouncilcoreOthersLabor organization representing building and construction trades workers. A.D. Winston employs steamfitters from Local 638 affiliated with this council.
• Subcontractors Trade AssociationminorOthersAssociation representing subcontractors in the construction industry for networking and advocacy.
• New York Building Congress (NYBC)coreOthersIndustry organization for building and construction in New York. Sal Barbera serves on the President's Council of the NYBC.
• American Society of Heating and Air Conditioning Engineers (ASHRAE)minorOthersTechnical society for HVAC professionals. A.D. Winston maintains membership for access to industry standards, research, and technical resources.
• Enterprise Association Local 638coreOthersLabor union representing steamfitters and refrigeration workers. A.D. Winston maintains reputation for quality piping by employing steamfitters from Local 638.
• Mechanical Service Contractors of America (MSCA)minorOthersTrade association for mechanical service contractors supporting service excellence and industry standards.

Scale indicators3 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• Comfort Systems USA: Publicly traded national HVAC/mechanical contractor with multiple regional operating companies, including presence in the Northeast. Closely comparable business model of HVAC installation, service, and maintenance for commercial and institutional customers.
• APi Group: Public safety, specialty services, and industrial conglomerate with mechanical contracting and HVAC service operations. Comparable as a diversified building services and mechanical contractor with institutional customer base.
• EMCOR Group: Largest publicly traded mechanical & electrical contractor in the U.S., with a major commercial HVAC installation and service business across multiple regions including NYC. Directly comparable as a full-service mechanical contractor serving institutional, commercial, and industrial clients.
• U.S. Engineering Company Holdings: Large privately held mechanical contractor with nationwide operations including commercial HVAC, plumbing, and building controls. Comparable as a larger diversified mechanical contractor with institutional and commercial focus.

Direct peers

• Limbach Holdings: Specialty mechanical contractor focused on HVAC, plumbing, and building controls for commercial and institutional customers in the U.S. Closely comparable business model, customer base, and project types to A.D. Winston.

Regional players

• Petrocelli Mechanical: NYC-based mechanical contractor serving commercial, institutional, and high-rise residential clients with HVAC and plumbing services. Comparable as a regional competitor in the same NYC mechanical contracting market.
• WDF Inc. NYC mechanical contractor providing HVAC, plumbing, and fire protection services for commercial and institutional buildings. Direct regional peer competing in the same NYC institutional customer base.
• Harris Mechanical: Northeast mechanical contractor specializing in commercial HVAC installation, service, and energy solutions. Comparable mid-sized regional mechanical contractor serving institutional and commercial customers.
• Donnelly Mechanical: Long-established NYC-area mechanical contractor specializing in HVAC, plumbing, and fire protection for commercial, institutional, and residential high-rise projects. Direct regional peer competing for similar institutional and commercial work in the NYC metro.
• Bowman Mechanical: Mid-Atlantic mechanical contractor providing HVAC installation and service for institutional and commercial customers. Comparable regional player with similar institutional focus and union labor practices.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks5 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/ad-winston-corp

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles9 records

Funding overview

Funding rounds

Investors

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

M&A

Investments

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

Frequently asked questions about A.D. Winston