NATIONAL HVAC SERVICE

What NATIONAL HVAC SERVICE does

National HVAC Service is a commercial and industrial mechanical services contractor founded in 1991 and headquartered in Nashville, Tennessee. The company delivers HVAC, plumbing, refrigeration, planned maintenance, 24/7 emergency repair, design-build retrofit, operational assessment, indoor air quality, and energy optimization services across Arkansas, Tennessee, and Delaware through seven branch locations. It is operated as part of the Service Logic family of mechanical services companies, leveraging a parent-provided training and safety infrastructure while retaining local go-to-market execution under regional General Managers.

The company's service portfolio spans ten verticals including commercial, industrial and manufacturing, mission critical facilities, research and development, utilities, healthcare, education, government, mixed-use/retail, and custom facilities. Differentiated offerings include the proprietary ThermaClear® oil-fouling remediation treatment (registered trademark, compliant under ASHRAE, UL, and ASTM standards) distributed via ECM Technologies, GPS Air needlepoint bipolar ionization (NPBI) indoor air quality installations, and fixed-fee Investment Protection Agreements that bundle preventive maintenance, repair, and 24-hour emergency service into subscription contracts. Field delivery is supported by Service Logic's technician education program covering major equipment brands (Trane, Carrier, York, Johnson Controls, Honeywell, Mitsubishi, Siemens).

Revenue mechanics combine professional services (project-based design/build, retrofit, and emergency work) with subscription/recurring maintenance contracts. Pricing is quote-based with publicly undisclosed rates; the company positions itself via local relationship-driven field sales rather than national brand campaigns, supplemented by ENERGY STAR and USGBC affiliations, SAM.gov federal contracting registration, and a 24/7 emergency hotline. Leadership additions in 2024–2025 (CFO Jacqueline Wisdom, IT Director John Breeding, Regional VP promotions) indicate a professionalization phase aimed at supporting multi-state organic growth and selective geographic expansion into adjacent markets such as southern Missouri.

Name

NATIONAL HVAC SERVICE

Legal name

National HVAC Service

Website

https://nationalhvacservice.com

Company type

Private

Founded year

1991

Operating status

Operating

Headcount range

101–250 employees

Short description

National HVAC Service is a commercial and industrial HVAC, plumbing, and mechanical services contractor founded in 1991, operating seven branches across Arkansas, Tennessee, and Delaware as part of the Service Logic family and serving ten verticals including healthcare, government, utilities, and mission critical facilities.

Ownership category

akta.pro rank

Product category

Commercial HVAC & Mechanical Services

NAICS

Plumbing, Heating, and Air-Conditioning Contractors (238220), Plumbing, Heating, and Air-Conditioning Contractors (23822), Appliance Repair and Maintenance (811412)

SIC

Auto Controls For Regulating Residential & Comml Environments (3822), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

HVAC Installation, Service & Repair (IMAIABAA)

akta.pro secondary industries

HVAC & Refrigeration Contracting (IMAFALAB), HVAC Service, Maintenance & Repair (BPABACAA), Emergency HVAC Repair (24/7) (HSAOAHAC), Commercial HVAC Maintenance Agreements & PM Programs (HSAOAHAJ)

Keywords

• Commercial HVAC services
• HVAC planned maintenance
• Emergency HVAC repair
• Design build mechanical
• Energy optimization solutions

Headquarters

HQ city

Nashville

HQ country

United States

HQ region

North America

Offices7 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Professional HVAC Services: Comprehensive mechanical services including emergency repair, preventive maintenance, system design and installation, retrofits and build-outs. Revenue generated through service fees, project contracts, and maintenance agreements.
2. Investment Protection Agreements (Maintenance Contracts): Fixed-fee annual or multi-year contracts covering all maintainable components of HVAC systems. Includes scheduled inspections, preventive maintenance, repairs, and 24-hour emergency service. Provides predictable recurring revenue stream.
3. Design/Build Projects: Complete system design and installation services for new construction and retrofit projects. Revenue from project-based contracts including unitary or built-up systems, controls, building automation, boilers and cooling plants.
4. Energy Optimization Services: Customized energy sustainability programs designed to reduce utility consumption and maximize efficiency. Revenue from consulting, implementation, and ongoing program administration services.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

National HVAC Service provides commercial and industrial heating, air conditioning, plumbing, refrigeration, and mechanical services, including preventive maintenance, 24/7 emergency repair, design/build retrofit projects, operational assessments, indoor air quality, and energy optimization, delivered through regionally managed branch offices in Arkansas, Tennessee, and Delaware. The company also offers a proprietary preventative maintenance product (ThermaClear®) and fixed-fee maintenance contracts (Investment Protection Agreements), as well as limited residential HVAC service in the Delmarva region.

Product overview

National HVAC Service is a commercial and industrial mechanical services company offering a comprehensive portfolio of HVAC, plumbing, refrigeration, and energy optimization services. The company operates as a unified service organization with core offerings including HVAC Services, Plumbing Services, Planned Maintenance, Emergency Repair, Design Build Retrofit, Operational Assessment, Indoor Air Quality, Energy Optimization, Residential Services, and Refrigeration Services. The portfolio also includes ThermaClear®, a proprietary preventative maintenance product that eliminates oil-fouling in HVAC systems. Services are delivered through regionally managed locations in Arkansas (Little Rock, Springdale, Fort Smith, Hope), Tennessee (Memphis), and Delaware (Seaford), with corporate headquarters in Nashville, TN. The company is part of the Service Logic family and focuses on commercial and industrial customers while also serving residential needs in the Delmarva region.

Differentiator

Problem solved

Functional benefit

Brands

• ThermaClear®: An HVAC preventative maintenance solution that eliminates oil-fouling with one treatment, restoring optimal performance and reducing operational costs.

Products and services

• HVAC Services Commercial and industrial heating, air conditioning, and mechanical services including energy optimization and design/build services for facilities across Arkansas, Tennessee, and Delaware.
• Plumbing Services Commercial plumbing services including backflow testing, drain cleaning, jetting, fixture replacements, water heater services, boiler services, and underground repairs for commercial buildings.
• Planned Maintenance Customized preventive maintenance programs that extend equipment life and avert potential failures through alignment with manufacturer recommendations and modern maintenance systems.
• Emergency Repair 24/7 emergency HVAC repair services including temporary chillers and boilers, packaged cooling units, and pumping systems with rapid response times.
• Design Build Retrofit Design/build and retrofit services for new systems, including unitary or built-up systems, controls, building automation systems, boilers, and cooling plants with holistic approach to project feasibility and long-term ROI.
• Operational Assessment Comprehensive facilities management assessment evaluating current equipment to reduce financial risk, including testing, systems analysis, utility costs, equipment performance, and single point of failure analysis.
• Indoor Air Quality Indoor air quality solutions using GPS NPBI technology, system design evaluation, equipment installation assessment, maintenance analysis, and filtration solutions including passive and active filtration.
• Energy Optimization Energy Sustainability Services Program (ESS) providing utility consumption reduction and efficiency maximization through in-house energy engineers, certified energy managers, and renewable energy technologies including solar, wind, and cogeneration.
• Refrigeration Services Commercial refrigeration services for reach-in and walk-in coolers, freezers, and related systems with over 30 years of experience in troubleshooting, repair, installation, and 24-hour emergency service.
• Residential Services Residential HVAC services including 24/7 emergency care, maintenance plans, system replacements and upgrades, with comprehensive maintenance care plans offering priority service and scheduled maintenance.
• ThermaClear® HVAC preventative maintenance solution that eliminates oil-fouling with one treatment. Approved under ASHRAE, UL Solutions, and ASTM International standards. Restores maximum energy efficiency, extends system lifespan, and prevents future oil-fouling by forming a permanent protective barrier.

Quantifiable outcome

• Oil-fouling reduces HVAC efficiency by 7% in first year, 5% in second, and 2% annually thereafter - addressed by ThermaClear®
• +2 more outcomes

Named customers3 records

Segments10 records

Ideal customer profiles6 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Integration1 record

Feature3 records

Partnerships

Seven partnerships are on record, tiered flagship and core.

• Service LogicflagshipStrategic or Co-development PartnerNational HVAC Service is a Service Logic company. Through Service Logic relationship, the company provides streamlined mechanical services from coast to coast. Service Logic administers industry-leading technician education programs, safety programs, and provides national resources supporting regional operations.
• GPS AircoreTechnology or IntegrationGPS Air provides needlepoint bipolar ionization (NPBI) technology for indoor air quality solutions. GPS NPBI is UL certified to not produce ozone and works with existing HVAC systems. Tests conducted by third-party laboratories. National HVAC installs GPS NPBI technology for active filtration against pathogens.
• ECM TechnologiescoreTechnology or IntegrationECM Technologies developed ThermaClear®, an HVAC preventative maintenance solution for eliminating oil-fouling. National HVAC Service offers ThermaClear as a proprietary service product. Approved under ASHRAE, UL Solutions, and ASTM International standards.
• ENERGY STARcoreStrategic or Co-development PartnerNational HVAC Service is an ENERGY STAR partner. Works with R&D facilities to deliver HVAC solutions meeting high environmental standards and promoting sustainability.
• U.S. Green Building Council (USGBC)coreStrategic or Co-development PartnerNational HVAC Service is a member of the U.S. Green Building Council. Works with R&D facilities to deliver HVAC solutions promoting sustainable buildings and environmental responsibility.
• Equipment Manufacturers (Trane, Carrier, York, Siemens AG, Johnson Controls, Honeywell, Mitsubishi, etc.)coreTechnology or IntegrationAs a trusted partner of major equipment manufacturers, all technicians receive continual education on latest product and industry innovations. Manufacturers include: Trane, Carrier, York, B.A.C. (Baltimore Aircoil), Siemens AG, Johnson Control, Honeywell, McQuay, Liebert, Cleaver Brooks, Aaon, Mitsubishi, Marley, Evapco, Data Aire.
• SAM.gov (System for Award Management)coreOthersNational HVAC Service is registered with SAM.gov as a vendor for the federal government, enabling them to bid on and serve government contracts.

Scale indicators6 records

Recent moves7 records

Expansion highlights6 records

Direct peers

• Service Logic (parent and sister operating companies): National HVAC Service's parent organization; the broader Service Logic family delivers the same commercial HVAC, plumbing, and mechanical services across multiple U.S. regions and is the most directly comparable operator given shared back-office, brand architecture, and service portfolio.
• Limbach Holdings: Public mechanical services firm specializing in HVAC, plumbing, and building controls for commercial, institutional, and mission-critical customers. Closely aligned in service portfolio, recurring-maintenance emphasis, and end-market exposure.
• Lee Company: Tennessee-headquartered mechanical services firm providing HVAC, plumbing, and building automation to commercial and residential customers across the Southeast; direct regional competitor with similar service breadth and customer mix.
• Bowman Mechanical: Mid-Atlantic-focused commercial HVAC and mechanical services contractor with strong presence in government, healthcare, and education — directly competitive on the type of institutional and public-sector contracts National HVAC Service pursues.

Broad incumbents

• EMCOR Group: Largest publicly traded U.S. mechanical and electrical construction services firm. EMCOR's Services division — which National HVAC Service's President previously led at EMCOR Services Team Mechanical — competes for the same commercial, industrial, and mission-critical HVAC service contracts.
• Comfort Systems USA: National mechanical contractor providing HVAC installation, service, and building automation across the U.S. through 40+ operating units; directly comparable in service mix and customer verticals to National HVAC Service's commercial/industrial focus.
• APi Group: Diversified safety, specialty, and industrial services platform with a substantial mechanical services segment serving commercial, industrial, and life-safety customers; competes for similar institutional and mission-critical HVAC service work.
• IES Holdings: National electrical and mechanical infrastructure services provider with HVAC and building automation offerings to commercial and industrial customers; overlaps significantly on design/build retrofit and service contracts.
• BGIS: Global facility management and real estate services firm delivering HVAC, mechanical, and energy services to commercial and mission-critical customers; competes for outsourced maintenance and facility-services contracts at scale.
• ABM Industries: Large facility services provider with HVAC and mechanical service offerings for commercial, healthcare, education, and government customers — a broader incumbent that competes for facility-level maintenance contracts in National HVAC Service's core verticals.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/national-hvac-service

Compliance4 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles8 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 NATIONAL HVAC SERVICE