Lennox National Account Services (NAS)

What Lennox National Account Services (NAS) does

Lennox National Account Services (NAS) is a division of Lennox International Inc. (NYSE: LII), founded around 2000 to deliver HVAC services exclusively to multi-site commercial operators. Operating under the Lennox NAS brand with approximately 403 employees, the business provides preventive maintenance, service and repair, HVAC replacement, and startup and commissioning through a nationwide, self-performing technician network that handles service delivery directly rather than through subcontractors. Target customers are enterprise multi-site businesses and government school districts across retail, supermarkets, restaurants, food processing, healthcare, logistics and distribution, and education.

The company's service platform is organized around four core programs — Preventative Maintenance, Service and Repair, HVAC Replacement, and Startup & Commissioning featuring a proprietary 64-Point Equipment Operations Check (EOC) — supported by a set of operational enablers: the NAPLR (National Accounts Parts and Labor Rates) fixed nationwide pricing system, an Analytics and Reporting platform for tracking spend, performance, and SLAs across locations, an in-house Training Center for technician certification, a dedicated account manager with 24/7 call center support, and a secure self-service customer portal (my.lennoxnas.com). The technology stack is fundamentally an HVAC service-management platform rather than a software product; brand-agnostic equipment expertise is a stated differentiator.

The business model blends recurring revenue from preventive maintenance contracts with project and event-based revenue from repairs, replacements, and commissioning. Pricing is quote-based and not publicly disclosed, with NAPLR standardizing parts and labor rates for repairs; contracts are multi-year. Go-to-market combines enterprise field sales with dedicated representatives for multi-site accounts, a bottom-of-funnel quote-request flow, and post-sale account management through the customer portal. No NAS-specific revenue is disclosed by Lennox International, and no external funding, M&A, or leadership change data is available for the division.

Name

Lennox National Account Services (NAS)

Legal name

Lennox International Inc.

Website

https://lennoxnas.com

Company type

Public

Founded year

2000

Operating status

Operating

Headcount range

251–500 employees

Short description

Lennox National Account Services, a division of Lennox International (NYSE: LII), delivers HVAC preventive maintenance, repair, replacement, and commissioning to enterprise multi-site operators and school districts across the U.S. via a nationwide self-performing service network.

Ownership category

akta.pro rank

Product category

Commercial HVAC Services

NAICS

All Other Support Services (561990)

akta.pro primary industry

Commercial HVAC Maintenance Agreements & PM Programs (HSAOAHAJ)

Keywords

• Commercial HVAC services
• Multi-site HVAC maintenance
• HVAC repair services
• HVAC replacement installation
• HVAC commissioning services

Headquarters

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Preventive Maintenance Services: Recurring maintenance programs for multi-site HVAC systems, designed to maximize building uptime and reduce overall spend through proactive care.
2. HVAC Repair Services: Fast, reliable HVAC repairs with fixed NAPLR pricing nationwide. Revenue generated through service calls with predictable costs per repair event.
3. HVAC Replacement and Installation: Equipment replacement programs delivering expert, brand-agnostic installs with zero disruption to customer sites. One-time service revenue for installation projects.
4. Startup and Commissioning Services: Equipment operations check services for new HVAC installations to ensure safe and efficient startup.

Pricing tiers

Go-to-market motion2 records

Distribution channels3 records

Marketing channels4 records

Core offering

Lennox National Account Services (NAS) delivers turnkey commercial HVAC service programs—including preventative maintenance, repairs, replacement, and startup/commissioning—to multi-site businesses and school districts across the United States. Services are executed by a nationwide self-performing technician network under fixed NAPLR pricing, with brand-agnostic equipment selection, dedicated account management, 24/7 support, and centralized analytics.

Product overview

Lennox National Account Services (NAS) is a service-centric HVAC provider offering a unified portfolio of four core service programs—Preventative Maintenance, Service and Repair, HVAC Replacement, and Startup & Commissioning—supported by operational enablers including HVAC Repair Pricing (NAPLR), Analytics & Reporting, Training Center, and Dedicated Customer Support. The company operates on a brand-agnostic, nationwide model delivering direct service through a self-performing network with no middleman, focused on multi-site businesses and school districts across retail, supermarkets, restaurants, food processing, healthcare, logistics, and distribution industries.

Differentiator

Problem solved

Functional benefit

Products and services

• Preventative Maintenance

Quantifiable outcome

• Reduced downtime through proactive preventive maintenance programs
• +3 more outcomes

Named customers7 records

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature4 records

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Broad incumbents

• APi Group:
• EMCOR Group: Large publicly traded mechanical and electrical services contractor (NYSE: EME) serving commercial, industrial, and utility customers. Comparable to Lennox NAS as a scaled provider of commercial HVAC, mechanical, and facility services to multi-site enterprise customers, though EMCOR operates a much broader portfolio including electrical, plumbing, and energy services beyond HVAC.

Direct peers

• Comfort Systems USA: Publicly traded commercial HVAC and mechanical services provider (NYSE: FIX) operating through regional subsidiaries across the U.S. Direct peer to Lennox NAS: same core offering (HVAC installation, service, maintenance for commercial customers), same multi-site enterprise focus, similar self-performing model, though slightly more weighted to installation than recurring service.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks6 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/lennox-national-account-services

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 Lennox National Account Services (NAS)