Lennox International

What Lennox International does

Lennox International Inc. (NYSE: LII) is a Richardson, Texas-based manufacturer of climate control solutions for air conditioning, heating, and refrigeration markets, founded in 1895 and operating with 10,000+ employees across residential, commercial, and refrigeration segments. Its product portfolio spans the Dave Lennox Signature Collection, the Ultimate Comfort System, indoor air quality systems, smart thermostats, Variable Refrigerant Flow (VRF) systems, commercial rooftop units and split systems, ComfortSense commercial thermostats, and the CORE Unit Controller paired with The CORE Service App. Refrigeration products are produced under the Heatcraft brand for commercial cold storage and food retail applications.

The company operates a dual go-to-market model: a factory-owned distribution network (described as unmatched in the HVAC industry) and a Commercial Alliance Contractor Network serve commercial customers, while an independent dealer network supported by the LennoxPros.com ordering portal serves residential homeowners. National Account Services (NAS) provides recurring preventative maintenance, service, and energy management to multi-location building owners, extending the model beyond equipment sales into recurring service revenue. Recent acquisitions — AES in October 2023 for installation and reclamation services, and NSI Industries' HVAC division for approximately $550 million in October 2025 — have expanded commercial service capabilities and product breadth. The Lennox India Technology Centre supports engineering and R&D operations.

Lennox makes money primarily through hardware sales of HVAC equipment and replacement parts, supplemented by professional services revenue from NAS maintenance and energy management contracts. Pricing is quote-based and varies by system configuration, capacity, and installation requirements, with no publicly disclosed standard pricing tiers. The customer base spans residential homeowners (via dealers), commercial contractors, and multi-location commercial building owners, with no disclosed anchor enterprise customers, suggesting a broadly distributed revenue base.

Name

Lennox International

Legal name

Lennox International Inc.

Website

https://lennoxinternational.com

Company type

Public

Founded year

1895

Operating status

Operating

Headcount range

5,001–10,000 employees

Short description

Lennox International is a 130-year-old NYSE-listed manufacturer of residential, commercial, and refrigeration HVAC systems, serving homeowners through independent dealers, commercial contractors via factory-owned distribution, and multi-location building owners through National Account Services.

Ownership category

akta.pro rank

Product category

HVAC Equipment Manufacturing

NAICS

Air-Conditioning and Warm Air Heating Equipment and Commercial and Industrial Refrigeration Equipment Manufacturing (333415), Automatic Environmental Control Manufacturing for Residential, Commercial, and Appliance Use (334512), Ventilation, Heating, Air-Conditioning, and Commercial Refrigeration Equipment Manufacturing (33341)

SIC

Air-Cond & Warm Air Heatg Equip & Comm & Indl Refrig Equip (3585), Auto Controls For Regulating Residential & Comml Environments (3822), Refrigeration & Service Industry Machinery (3580)

akta.pro primary industry

Controls, Thermostats, Sensors & Building Automation (HVAC Controls) (IMADANAH)

akta.pro secondary industries

Refrigeration Components & Controls (Compressors, Valves, Sensors) (IMAHAKAH), Chillers & Cooling Plant Equipment (IMAHAKAE), HVAC Zoning, Smart Dampers & Ventilation Control (HSAOANAB)

Keywords

• HVAC equipment manufacturing
• Climate control solutions
• Residential heating cooling
• Commercial refrigeration systems
• Indoor air quality products

Headquarters

HQ city

Richardson

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B and B2C

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. HVAC Equipment Sales: Sale of residential and commercial heating, cooling, and refrigeration equipment including air conditioners, furnaces, heat pumps, VRF systems, and rooftop units.
2. Parts and Supplies: Sale of replacement parts and supplies through LennoxPros.com dealer portal and distribution network.
3. Commercial Services: National Account Services (NAS) providing preventative maintenance, service, and energy management for multi-location building owners.
4. Acquisition Integration: Integration of acquired NSI Industries' HVAC division to expand service capabilities and product portfolio.

Go-to-market motion2 records

Distribution channels5 records

Marketing channels7 records

Core offering

Lennox International designs, manufactures, and markets climate control solutions including residential and commercial heating, ventilation, air conditioning (HVAC) equipment, refrigeration systems, and indoor air quality products. The company serves both homeowners through a dealer network and commercial enterprises through factory-owned distribution, offering premium, energy-efficient systems such as variable refrigerant flow units, smart thermostats, and air handlers.

Product overview

Lennox International is a provider of climate control solutions for air conditioning, heating, and refrigeration markets. The company operates a multi-brand portfolio organized into residential and commercial segments. Residential offerings center on the Dave Lennox Signature® Collection and The Ultimate Comfort System™ for whole-home comfort, complemented by Indoor Air Quality Systems and Smart Thermostats. Commercial solutions include Variable Refrigerant Flow (VRF) systems, rooftop units, split systems, ComfortSense thermostats, and the CORE Unit Controller with associated CORE Service App. The company also provides National Account Services for multi-location building operators. Products are distributed through dealers via LennoxPros.com and factory-owned distribution networks.

Differentiator

Problem solved

Functional benefit

Brands

• Dave Lennox Signature Collection: Premium, award-winning HVAC systems line featured in the Ultimate Comfort System
• Ultimate Comfort System
• ComfortSense
• Lennox VRF
• CORE Unit Controller
• The CORE Service App
• LennoxPros
• National Account Services (NAS)

Products and services

• Dave Lennox Signature Collection Flagship premium line of residential heating, cooling, and indoor air quality products engineered for high efficiency and quiet operation, targeted at premium homeowners and sold through independent Lennox dealers.
• Ultimate Comfort System
• Indoor Air Quality Systems
• Lennox Smart Thermostats
• ComfortSense Thermostats
• Variable Refrigerant Flow (VRF) Systems
• Commercial HVAC Solutions
• CORE Unit Controller
• National Account Services (NAS)
• Refrigeration Systems
• NSI National Service & HVAC Solutions

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Scale indicators5 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Carrier Global Corporation: Global HVAC and refrigeration manufacturer with overlapping residential, commercial, and refrigeration portfolios (Carrier, Bryant, Payne) — direct competitor to Lennox across almost every product line.
• Trane Technologies: Major HVAC and building controls company (Trane, Thermo King) competing head-to-head with Lennox in commercial rooftop units, VRF, and residential systems.
• Johnson Controls International: Building HVAC and controls provider (York, Coleman) with strong commercial service and installed-base exposure comparable to Lennox's NAS and commercial segments.
• Rheem Manufacturing Company: Privately held manufacturer of residential and commercial heating, cooling, and water heating products; overlaps Lennox's residential and light-commercial HVAC portfolio.
• Goodman Manufacturing (Daikin): U.S. residential and light-commercial HVAC manufacturer owned by Daikin; directly competes with Lennox's residential dealer channel and Dave Lennox Signature Collection.

Broad incumbents

• Daikin Industries: Global HVAC and refrigeration leader with strong VRF and heat pump franchises (Daikin, Goodman, Amana); competes with Lennox globally and owns Goodman, a major U.S. residential competitor.
• Mitsubishi Electric: Diversified conglomerate with a strong VRF and commercial HVAC business (including Mitsubishi Electric Trane HVAC US); directly competitive in commercial VRF and controls where Lennox positions its VRF line.
• Honeywell International (Building Technologies): Honeywell's Building Technologies segment supplies HVAC controls, building automation, and energy management that overlap Lennox's ComfortSense, CORE Unit Controller, and NAS offerings.

Regional players

• Bosch Thermotechnology: Bosch's HVAC division produces residential and commercial heating/cooling products (heat pumps, boilers); comparable to Lennox in residential heat pump and IAQ adjacencies, with stronger European roots.

Emerging players

• AAON: U.S. manufacturer of high-efficiency commercial HVAC and air handling units; competes with Lennox in the commercial rooftop and air-handling segment.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/lennoxair
• YouTubeyoutube.com/lennoxresidential
• Facebookfacebook.com/profile.php
• LinkedInlinkedin.com/company/lennox-international
• Instagraminstagram.com/lennoxair

Revenue estimate

Valuation estimate

Number of profiles

Profiles7 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

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

M&A2 records

Investments

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

Frequently asked questions about Lennox International