Dillingham & Smith Mechanical and Sheet Metal Contractors, LLC

What Dillingham & Smith Mechanical and Sheet Metal Contractors, LLC does

S.M. Lawrence Company, Inc. is a 100+ year-old mechanical and sheet metal contractor that provides integrated HVAC, plumbing, electrical, refrigeration, and building automation services to commercial and industrial customers across Middle and West Tennessee, North Mississippi, and Eastern Arkansas. The company operates from four regional offices (Nashville, Jackson, Olive Branch/Memphis, Corinth) and serves verticals including healthcare, manufacturing, hospitality, government/institutional, multi-family residential, and food service/warehousing. Service delivery spans design, construction, retrofit, and ongoing maintenance, with the proprietary ComfortCARE 365 subscription maintenance program and the Comfort Automation Systems (CAS) platform — built on Honeywell WEBs-N4/AX, Siemens DDC, and Tridium Niagara with BACnet/LON/Modbus protocol support — as the two branded differentiators.

The business operates as a wholly-owned subsidiary of Comfort Systems USA (NYSE: FIX), having joined the parent as a founding member in 1997, while retaining independent regional operations and brand identity. Revenue is generated through a mix of project-based construction services and recurring managed-services/maintenance contracts (ComfortCARE 365), with pricing on Net 30 commercial terms and an annual billing cadence for preventative maintenance programs. The technology stack combines in-house sheet metal fabrication, process piping and welding capabilities, and licensed in-house engineering for design-build-maintain single-source delivery. Go-to-market is direct B2B field sales through the four offices, supported by online service request and new customer application forms, LinkedIn/Facebook presence, and a Workday-hosted careers portal under the Comfort Systems USA recruiting infrastructure. No AI/ML capabilities, proprietary software products, or disclosed revenue figures were identified in the source material.

Note: The input labels the subject as "Dillingham & Smith Mechanical and Sheet Metal Contractors, LLC" with 5 employees, but every substantive data block describes S.M. Lawrence Company, Inc. — a four-office Comfort Systems USA subsidiary with 50+ licensed HVAC technicians. This mismatch is treated as a data-entity error; analysis above is grounded in the substantive S.M. Lawrence records.

Name

Dillingham & Smith Mechanical and Sheet Metal Contractors, LLC

Legal name

S.M. Lawrence Company, Inc.

Website

https://dillinghamsmith.com

Company type

Private

Founded year

1917

Operating status

Operating

Headcount range

1–10 employees

Short description

S.M. Lawrence Company is a 100+ year-old mechanical and sheet metal contractor delivering HVAC, plumbing, electrical, refrigeration, and building automation services to commercial and industrial customers across Tennessee, Mississippi, and Arkansas via four regional offices; it operates as a wholly-owned subsidiary of Comfort Systems USA (NYSE: FIX).

Ownership category

akta.pro rank

Product category

Mechanical Contracting Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Sheet Metal Work Manufacturing (332322)

SIC

Sheet Metal Work (3444)

akta.pro primary industry

HVAC & Refrigeration Contracting (IMAFALAB)

akta.pro secondary industries

Sheet Metal & Ductwork Contracting (IMAFALAH), Plumbing & Pipefitting Contracting (IMAFALAC), Industrial/Process Piping & Mechanical Contracting (IMAFALAG)

Keywords

• Mechanical contracting
• Sheet metal fabrication
• HVAC services
• Plumbing contracting
• Building automation

Headquarters

HQ city

Nashville, Tennessee

HQ country

United States

HQ region

North America

Offices4 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Construction Services: Design, build, and construction of HVAC, mechanical, electrical, refrigeration, and plumbing systems for new construction and renovation/retrofit projects. Includes in-house design capabilities from licensed professionals.
2. Building Services and Maintenance: Ongoing maintenance, service, and support for commercial and industrial facilities including HVAC, plumbing, refrigeration, and building automation. Customized maintenance programs like ComfortCARE 365.
3. Retrofit and Replacement: System replacements and upgrades for existing and occupied buildings, including emergency and temporary equipment replacement. Expert project management for renovation projects.
4. Service and Repair: 24/7 emergency service, preventative maintenance, and repair services for commercial and industrial equipment across multiple trades (HVAC, electrical, plumbing, refrigeration).

Pricing tiers

Go-to-market motion2 records

Distribution channels1 record

Marketing channels5 records

Core offering

Dillingham & Smith Mechanical and Sheet Metal Contractors provides design, construction, installation, maintenance, retrofit, and replacement services for HVAC, plumbing, electrical, refrigeration, and process piping systems serving commercial and industrial markets. The company delivers single-source mechanical solutions including custom sheet metal fabrication and Comfort Automation Systems (CAS) building automation integration. Operations are supported through multiple regional offices with direct field service teams and licensed technicians.

Product overview

S.M. Lawrence is a mechanical and sheet metal contractor offering integrated design, build, and maintenance services for commercial and industrial facilities. The company provides a single-source solution combining HVAC, electrical, plumbing, refrigeration, and building automation systems. Core offerings include ComfortCARE™ maintenance programs and Comfort Automation Systems (CAS) for building control, supported by specialized services such as sheet metal fabrication, process piping, and welding. The company operates four office locations serving Middle Tennessee, West Tennessee, North Mississippi, and Eastern Arkansas.

Differentiator

Problem solved

Functional benefit

Brands

• ComfortCARE 365: Maintenance and operation program contracts offering preventive to full coverage maintenance services.
• Comfort Automation Systems (CAS)

Products and services

• ComfortCARE Maintenance Program Customized maintenance and operation program offering preventive to full-coverage contracts designed to improve equipment reliability, energy efficiency, and indoor air quality while reducing maintenance downtime for commercial and industrial facilities.
• Comfort Automation Systems (CAS) Custom building automation and integration system featuring Honeywell WEBs-N4 and WEBs-AX, Siemens and Honeywell DDC controllers, BACnet/LON/Modbus protocol support, and mobile access via Apple and Android devices.
• HVAC Construction and Service Design, construction, installation, retrofit, replacement, and maintenance of HVAC systems including rooftop units, applied systems, chilled water systems, boiler systems, VRV/VRF systems, and unitary/split systems for commercial and industrial markets.
• Plumbing Services Complete plumbing services including domestic hot water heaters, hydro-jet drain cleaning, sewer pipe video inspection, leak detection, backflow testing, fixture installation, and specialized services for hydronic steam, natural gas, and medical gas systems.
• Refrigeration and Kitchen Equipment Services Installation, service, and maintenance of commercial refrigeration equipment including reach-in coolers/freezers, walk-in coolers/freezers, ice machines, display cases, and rack systems for restaurants, retail, and industrial warehouses.
• Electrical Services Full-service electrical capabilities including installation, retrofits, repairs, and upgrades for commercial and industrial facilities.
• Sheet Metal Fabrication Custom sheet metal fabrication capabilities for HVAC systems, ductwork, and specialized metal components for commercial and industrial applications.
• Process Piping and Welding Services Process piping, welding services including steam specialties, gas piping, air lines, stainless welding, and Pro Press installations for industrial applications.
• Building Services Comprehensive building maintenance and service solutions covering ongoing support, occasional service, and customized maintenance programs to optimize equipment performance and maintain design efficiency.
• Retrofit and Replacement Services Start-to-finish solutions for renovation and retrofit projects, including system replacements for existing and occupied buildings, expert project management, emergency and temporary equipment replacement, and building systems analysis.

Quantifiable outcome

• Energy savings of 5 to 30% can be realized through improved operations and maintenance of building systems (per U.S. Department of Energy and BOMA)

Named customers10 records

Segments6 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Partnerships

Three partnerships are on record, tiered core.

• Comfort Systems USAcoreStrategic or Co-development Partner · 1 January 1997S.M. Lawrence joined Comfort Systems USA in 1997 as a founding member. As part of Comfort Systems USA's network of sister companies, S.M. Lawrence has access to resources and capabilities across the United States. The company operates under shared core values with Comfort Systems USA (Be Safe, Be Honest, Be Respectful, Be Innovative, Be Collaborative) and benefits from the national presence and brand recognition of the parent company.
• HoneywellcoreTechnology or IntegrationTechnology partner for building automation systems. S.M. Lawrence's Comfort Automation Systems (CAS) utilize Honeywell WEBs-N4 and WEBs-AX platforms, along with Honeywell DDC controllers. They are part of the controlled partner ecosystem for Honeywell building automation solutions.
• SiemenscoreTechnology or IntegrationTechnology partner for building automation systems. S.M. Lawrence's Comfort Automation Systems (CAS) utilize Siemens DDC controllers as part of their smart building technology offerings.

Scale indicators3 records

Recent moves4 records

Expansion highlights5 records

Regional players

• Murphy Company: Murphy Company is a regional mechanical contractor serving the commercial and industrial market with HVAC, plumbing, process piping, and sheet metal fabrication. It is comparable to S.M. Lawrence in service mix and target verticals, though operating in a different geography.
• Lee Company: Lee Company is a Nashville-based mechanical and building services contractor serving Middle Tennessee. It directly competes with S.M. Lawrence in the Nashville commercial and industrial market with overlapping HVAC, plumbing, and electrical services.

Direct peers

• Limbach Holdings: Limbach Holdings is a publicly traded mechanical contractor providing HVAC, plumbing, and building automation design, build, and service across commercial and institutional markets. It is directly comparable to S.M. Lawrence in service mix, target verticals, and recurring maintenance revenue focus.
• Comfort Systems USA (other subsidiaries): Comfort Systems USA operates a network of mechanical and electrical contracting subsidiaries across the U.S. Sibling subsidiaries in other regions share the same business model, technology partnerships, and customer verticals as S.M. Lawrence.
• IES Holdings: IES Holdings is a publicly traded electrical and mechanical contractor providing installation and service for commercial, industrial, and residential markets. It is a direct peer in the multi-trade design-build-maintain model.
• Service Logic: Service Logic is a privately held provider of HVAC, plumbing, and mechanical services for commercial and industrial facilities with a recurring service focus. Its multi-region service model and maintenance contract business directly parallel S.M. Lawrence's building services.

Broad incumbents

• Trane Technologies: Trane Technologies is a global HVAC and building systems manufacturer with a significant service and controls business. Its building automation and service business overlaps with S.M. Lawrence's Comfort Automation Systems and HVAC maintenance offerings.
• EMCOR Group: EMCOR Group is a large publicly traded mechanical and electrical construction and facilities services firm with nationwide operations. It competes with S.M. Lawrence on multi-trade commercial and industrial projects and is a broad incumbent in the same space.
• Carrier Global: Carrier Global is a large global HVAC equipment manufacturer and service provider. While primarily a manufacturer, its service and controls businesses overlap with S.M. Lawrence's equipment installation, maintenance, and building automation offerings.
• APi Group: APi Group is a large publicly traded provider of safety, specialty, and industrial services with a significant mechanical services segment. Its service and maintenance offerings overlap with S.M. Lawrence's recurring service revenue model.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• Facebookfacebook.com/smlawrenceco
• LinkedInlinkedin.com/company/dillingham-&-smith-mechanical-and-sheet-metal-contractors-llc

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 Dillingham & Smith Mechanical and Sheet Metal Contractors, LLC