W.H. Demmons

What W.H. Demmons does

W.H. Demmons is a privately-held, for-profit commercial building services firm headquartered in Portland, Oregon, founded in 1914. The company specializes in HVAC/R (heating, ventilation, air conditioning, and refrigeration), roofing, installation, professional engineering, and building automation system solutions, indicating a vertically integrated mechanical contracting and controls capability rather than a single-trade service offering. The firm operates with 11–50 employees, placing it in the small-business / regional contractor segment typical of long-tenured specialty trade providers in the Pacific Northwest commercial services market.

The company's business model centers on project installation, ongoing service, and engineering work for commercial and institutional building owners in its regional market, with building automation as a differentiated offering alongside traditional mechanical and roofing work. No public pricing, customer, or revenue disclosures are available; the firm's website is non-functional (displaying a verification/loading page), and the source data contains no management team, partnership, certification, or product detail entries. The combination of a century of continuous operation, the 11–50 employee headcount, and the multi-discipline service mix suggests a relationship-driven regional contractor whose revenue scale and growth trajectory are not externally documented.

The underlying technology stack is not disclosed. The "building automation system solutions" line item implies integration of commercial control platforms (e.g., BMS front-ends, sensors, HVAC controls), but no proprietary platform, partnership, or in-house product has been documented. With no data on certifications, licensed engineering credentials, patents, or OEM partnerships, the technical moat cannot be characterized beyond the longevity signal implied by the 1914 founding date.

Name

W.H. Demmons

Website

https://whdemmons.com

Company type

Private

Founded year

1914

Headcount range

11–50 employees

Short description

W.H. Demmons is a privately-held Portland-based contractor founded in 1914, providing HVAC/R, roofing, installation, professional engineering, and building automation system solutions to commercial and institutional customers.

Ownership category

akta.pro rank

Product category

HVAC and Building Mechanical Contracting Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Roofing Contractors (238160), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512)

SIC

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

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industry

Building Automation & Controls (BAS/BMS) Contracting (IMAFALAE)

Keywords

• HVAC services
• Building automation systems
• Roofing installation
• Professional engineering services
• Refrigeration services

Headquarters

HQ city

Portland

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Supply Chain, Operations, Marketing or Sales

Core offering

W.H. Demmons provides HVAC/R (heating, ventilation, air conditioning, and refrigeration), roofing, installation, professional engineering, and building automation system solutions. The company serves as a multi-discipline building mechanical and envelope contractor for commercial and institutional facilities.

Differentiator

Problem solved

Functional benefit

Products and services

• HVAC/R Services
• Roofing Services
• Installation Services
• Professional Engineering Services
• Building Automation System Solutions

Ideal customer profiles1 record

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Broad incumbents

• APi Group: Public specialty services platform with multiple mechanical, HVAC and building automation subsidiaries. Comparable because its operating companies do exactly the integrated mechanical/BAS contracting that W.H. Demmons performs, but at significantly greater scale.
• Trane Technologies: Global HVAC and building automation incumbent (Trane / Thermo King). Competes head-on with W.H. Demmons in commercial HVAC and BAS retrofits, often via factory-direct solutions that put pricing pressure on independent mechanical contractors.
• Johnson Controls: Global building automation and HVAC major, parent of Automated Logic and Metasys lines. Overlaps heavily with W.H. Demmons in commercial BAS and HVAC service, and is the primary global competitor in the controls layer.
• Siemens Smart Infrastructure: Siemens' building automation, HVAC and energy services division (formerly Siemens Building Technologies). Comparable as a direct competitor to W.H. Demmons for digital BAS retrofits and large commercial mechanical + controls packages.
• Carrier Global: Global HVAC and building automation incumbent with chillers, air-handling units and the Carrier/Automated Logic controls platforms. Relevant incumbent because it both supplies equipment into W.H. Demmons' projects and competes for BAS upgrade work.
• EMCOR Group: Public diversified mechanical and electrical services giant with deep HVAC, controls and building automation franchises. EMCOR is far larger than W.H. Demmons but serves the same commercial and institutional segments with overlapping capabilities.
• Honeywell Building Technologies: Honeywell's building automation, HVAC and energy services division. Competes with W.H. Demmons in commercial BAS retrofits and energy-efficiency upgrades, and is a key incumbent threat on the engineering side of the business.

Direct peers

• IES Holdings: Public commercial contractor with mechanical, electrical and plumbing divisions. IES shares the bundled mechanical-and-controls capability that W.H. Demmons provides to commercial property owners and general contractors.
• Greenwood Industries: Mid-sized commercial HVAC/mechanical contractor also active in roofing — a particularly close functional peer because, like W.H. Demmons, it pairs building envelope and mechanical services under one delivery model.
• Comfort Systems USA: Public mechanical and HVAC contractor operating across the U.S. Like W.H. Demmons, it installs and services HVAC, plumbing, controls and building automation systems for commercial and industrial customers, making its project delivery model and customer base directly comparable.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat2 records

Key risks5 records

Key highlights4 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 W.H. Demmons