Profiling Top 10 Companies Offering Advanced and Energy-Efficient HVAC Systems in 2025

In the 21st century, heating, ventilation and air-conditioning (HVAC) systems have become an important part of most urban spaces. After all, these systems help maintain comfortable and healthy indoor environments. Along with regulating temperatures, they regulate humidity, filter out airborne pollutants, and help maintain optimal air quality, making them essential for comfort, health, and productivity.

With indoor air quality and energy efficiency becoming top priorities, HVAC systems are more important than ever in how we live, work, and stay indoors. In this blog post, we explain to you the basics of HVAC systems and their importance. Also, we shed light on the top ten companies driving innovation and shaping the HVAC systems market landscape. Continue reading!

HVAC Systems: Overview

HVAC is an advanced system. It is intended for the management of indoor air quality and temperature. These systems ensure thermal comfort and promote health and well-being. The key scientific principles of these systems include thermodynamics, heat transfer, and fluid mechanics.

HVAC systems stand out for their comprehensive role. They are responsible for heating, ventilation, and cooling. Their use helps maintain comfort in residential spaces and commercial units. A notable thing about these systems is that they are capable of drawing in fresh outdoor air. This capability helps improve the quality of indoor air.

HVAC systems are available in various types. And each of them is designed for specific applications. These include automotive HVAC for vehicle comfort and hydronic HVAC systems that make use of water as a heat transfer medium. Other types of HVAC systems include central HVAC, ductless mini-split systems, and geothermal HVAC. Each of them offers customized solutions for offices, homes, and industrial settings.

Did you know? Rising urbanization has resulted in increased demand for new buildings and is driving the adoption of HVAC systems. Our latest assessment reveals the HVAC systems market stood at USD 242.87 billion in 2024. The HVAC systems market is projected to account for a CAGR of 7.2% from 2025 to 2034.

Key Components of HVAC Units

HVAC systems consist of a number of units and components. These parts all work together to control temperature and air quality in the space. 

Furnace: The furnace is the heating unit in an HVAC system. It uses fuel sources like natural gas and oil to generate heat, and distribution occurs through a ductwork.

Air Conditioning Unit: This is the air conditioning unit in the HVAC system. It uses a refrigerant with a cooling cycle to cool the air, which is distributed through the ductwork.

Heat Pump: This unit can provide both heating and cooling, using a refrigerant and reversing cycle to move the heat.

Ductwork: Ductwork is simply a network of vents and pipes that moves the heated or cooled air throughout the entire building.

Thermostat: A thermostat is a sensing control device that detects the air temperature, which signals the HVAC unit to modify the cooling or heating.

In addition to these components in an HVAC system, there can be a variety of other components from the HVAC accessories market, which can include evaporator coil, condenser coil, compressor coil, refrigerant, blower motor, etc.

Major Companies in the HVAC Systems Market

Carrier Corporation

Year Established: 1915

Headquarters: Palm Beach Gardens, Florida, US

Carrier Corporation is recognized as a prominent purveyor of HVAC solutions around the world. Carrier offers a wide variety of HVAC systems applicable for residential, commercial, and industrial use with products ranging from energy-efficient air conditioning systems, heating systems, and ventilation to indoor air quality (IAQ) solutions. Additionally, Carrier offers products such as air purifiers, smart thermostats, and intelligent building systems that provide effective energy consumption monitoring.

Daikin Industries, Ltd.

Year Established: 1924

Headquarters: Osaka, Japan

Daikin Industries, Ltd. is another premier supplier of high-quality air conditioning solutions for residential, commercial, and industrial locations. Daikin's products include variable refrigerant flow (VRF) systems, ductless mini-splits, and air handling systems that provide both heating and cooling. Daikin's solutions are energy-efficient. The company also has innovative products like smart thermostats and air purifiers that enable high-quality indoor air.

Fujitsu

Year Established: 1935

Headquarters: Tokyo, Japan

Fujitsu Limited is a Japanese multinational corporation. It offers numerous HVAC products related to residential and commercial air conditioning. Its HVAC solutions include ductless splits, multi-split systems, and heat pumps. The HVAC systems manufactured by Fujitsu are energy-efficient. They make use of inverter technology for performance and energy savings.

Haier Group

Founded: 1984

Headquarters: Qingdao, China

Haier Group is a Chinese multinational company specializing in home appliances and consumer electronics. Haier manufactures a variety of HVAC products, including residential air conditioning units, heat pumps, and ventilation systems. The HVAC products Haier manufactures include modern air conditioning units for residential housing featuring smart inverter technology to save energy while cooling or heating with minimal consumption. The company also manufactures air purifiers and dehumidifiers to clean and improve air quality.

Havells India Ltd.

Founded: 1958

Headquarters: Noida, India

Havells India Limited is an Indian multinational electrical equipment company that produces home appliances and lighting for residential, commercial, and industrial uses. Havells offers a comprehensive and diverse range of HVAC solutions, primarily in residential and commercial air conditioning. Their products include split air conditioners, window ACs, and energy-efficient heat pumps. Havells is also a market leader in air coolers, ventilation systems, and smart thermostats designed for climate control purposes.

Hitachi Ltd.

Founded: 1910

Headquarters: Tokyo, Japan

Hitachi Ltd is a multinational conglomerate in information technology, electronics, power systems, and social infrastructure. Hitachi Ltd produces commercial and residential air conditioning systems and sells them as advanced products, including VRF systems, split systems, chillers, and heat pumps. In addition to air conditioning and climate control systems, the company develops and sells a line of high-performance air purifiers and humidifiers intended to support indoor air quality. The companies' climate control systems also target specific environments such as server rooms and data centers.

Johnson Controls

Founded: 1885

Headquarters: Cork, Ireland

Johnson Controls sells multiple HVAC systems, heating and cooling equipment, ventilation systems, and automation systems for buildings. It specializes in smart and energy-efficient systems that connect to building management systems for residential and commercial environments. The company’s product line includes air conditioners, heat pumps, chillers, and control systems that optimize energy consumption.

LG Electronics

Founded: 1958

Headquarters: Seoul, South Korea

LG has a large selection of residential and commercial solutions for the HVAC systems market. They have ductless mini-split air conditioners, multi-zone systems, heat pumps, and air purifiers. Their smart HVAC solutions connect to Wi-Fi and can be used to adjust settings remotely.

Lennox International Inc.

Year Established: 1895

Headquarters: Richardson, Texas, USA

Lennox International specializes in a wide variety of heating, ventilation, and air conditioning (HVAC) systems, including air conditioners, heaters, heat pumps, and air handlers. The company is also operational in the connected thermostat market and offers Wi-Fi-enabled thermostats. Lennox is known for their high-efficiency models, specifically the Lennox Signature Series, which includes advanced features that allow users to remotely control and monitor them using Wi-Fi. Lennox models are designed for optimum comfort to help consumers reduce energy costs.

Mitsubishi Electric Corporation

Year Established: 1921

Location: Tokyo, Japan

Mitsubishi Electric Corporation is a quality manufacturer of energy-efficient HVAC systems. The company produces a variety of systems, including variable refrigerant flow (VRF) systems, mini split air conditioners, ducted systems, and heat pumps. Mitsubishi Electric specializes in advanced sustainability products featuring smart controls and VRF technology, offering superior comfort while reducing overall energy consumption.

Conclusion

In summary, the HVAC systems market is quickly evolving due to the desire for energy-efficient and intelligent climate control options. The companies highlighted in this blog are leading the charge in terms of both technology and sustainability. Not only are they advancing technologies, but they are also introducing unique solutions that are changing comfort in residential, commercial, and industrial spaces.