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12 Most Energy Efficient HVAC Companies in 2024 [Full Review]

Whether in commercial office spaces, retail establishments, or cozy homes, HVAC technology impacts our daily lives in ways we often take for granted.

Every year in the United States, approximately three million heating and cooling systems are replaced, resulting in a staggering $14 billion expenditure on HVAC services and repairs.

Given that heating and cooling collectively contribute to nearly half of a typical home’s energy consumption, investing in energy efficient HVAC systems is essential to saving money and ensuring long-term environmental health.

Let’s take a look at sustainable HVAC technologies. Hopefully, we can see a future in which comfort doesn’t come at the expense of our planet.

What Is HVAC and Why Is Energy Efficiency Important?

HVAC refers to heating, ventilation, and air conditioning. An HVAC system is made up of several components that work together to regulate the temperature and ventilation in both residential and commercial spaces.

HVAC systems play a pivotal role in our daily lives, ensuring comfort and maintaining indoor air quality. These systems provide warmth during cold weather by distributing heated air while also cooling indoor spaces during hot summers by removing excess heat and humidity.

Energy efficiency in commercial buildings may not only provide a hospitable work environment but could also be imperative to the facility’s successful operational needs. Additionally, it is becoming increasingly important to companies and their stakeholders to decrease their carbon footprint while striving for net zero greenhouse gas emissions and becoming carbon neutral.

HVAC energy consumption, unfortunately, has a severe global impact. For instance, HVAC equipment accounts for 40% of energy usage in commercial buildings, and energy used by residential homes creates twice as much greenhouse gas emissions

Energy efficiency is crucial in HVAC systems because it directly impacts cost savings and environmental sustainability. Efficient systems consume less energy, leading to reduced utility bills for homeowners and businesses.

Additionally, lower energy consumption translates to fewer greenhouse gas emissions, helping maintain a healthy planet.

Watch this video from the Sustainability Education Academy explaining the importance of knowing more about HVAC and it’s relation to energy usage.

HVAC System Types

A diverse array of HVAC system types exists to cater to various needs and spaces. Let’s explore these HVAC variants:

Split system

This system is ‘split’ between two main units (one for cooling and one for heating), which is most common among HVAC systems.

Hybrid system

As an advanced version of the Split System, the Hybrid System’s main difference is improved energy efficiency. It is equipped with a hybrid electric heater system.

Ductless system

Consists of an outside air conditioner for cooling as well as a heat pump for cooling and heating. The ductless system is suitable for homes where conventional systems of ducts can’t be used.

Packaged system

A packaged HVAC system offers high-quality heating and cooling combined into one unit. This system is usually used in homes without basements and often installed outdoors.

Key Eco-friendly HVAC Technologies

Solar-Powered HVAC Systems

These systems utilize solar panels to harness renewable energy from the sun, reducing reliance on fossil fuels. They are energy efficient, cutting down on energy costs and carbon emissions. However, their effectiveness can be limited in areas with less sunlight, and the initial installation cost can be high.

Geothermal Heating and Cooling Systems

Geothermal technology leverages the earth’s stable underground temperature to heat and cool buildings. This system is highly energy efficient, reducing energy consumption significantly. While the upfront installation cost can be high, the long-term savings in energy costs make it a viable option.

Air Source Heat Pumps

Heat pumps are a versatile, energy-efficient alternative to traditional air conditioning and heating systems. They operate by transferring heat between the inside and outside of a building. When heating, they extract heat from the outside air, even in cold temperatures, and when cooling, they do the reverse. This energy-efficient technology can significantly reduce energy costs.

Smart Thermostats and Automation

Smart thermostats optimize HVAC system operation, reducing unnecessary energy consumption. This feature allows for more precise control over heating and cooling, adapting to your schedule and preferences, and can be controlled remotely for enhanced convenience.

Modern building interior looking out glass windows

How to measure energy efficiency in HVAC systems

Understanding energy efficiency metrics can help you make informed decisions when choosing an HVAC solution for your company or home needs. Let’s explore how energy efficiency is measured in HVAC  systems:

Energy Efficiency Ratio (EER)

  • EER is the measure of the efficiency of an air conditioner at peak temperatures.
  • We calculate this by dividing the cooling output (in Btu’s) by the unit’s power consumption (in Watts) at a specific temperature (usually around 95°F).
  • A higher EER indicates a more efficient system.
  • The typical HVAC system EER rating ranges from 13 to 23.

Seasonal Energy Efficiency Ratio (EER)

  • SEER stands for Seasonal Energy Efficiency Ratio. It measures a cooling system’s efficiency by evaluating its cooling output in relation to the electricity it consumes over a specific period, typically a season.
  • Most air conditioning units have SEER ratings ranging from 14 to 22.

Coefficient of Performance (COP):

  • COP is commonly used for heat pumps and refrigeration systems.
  • It represents the ratio of useful heating or cooling output (in Btu’s) to the electrical energy input (in Watts).
  • A COP greater than 1 indicates that the system produces more energy (heat or cooling) than it consumes.
  • As an example, a heat pump with a COP of 4 provides four times more heat energy than the electricity it uses1.

Correct Unit Sizing:

  • Properly sizing an HVAC system is crucial for energy efficiency.
  • Oversized units waste energy and cycle on and off frequently, while undersized units struggle to maintain comfort.
  • Correct sizing considers factors like insulation, climate, and building layout.
  • Annual Fuel Efficiency Ratio (AFUE):

AFUE applies to furnaces and boilers.

  • It measures the efficiency of converting fuel (such as natural gas or oil) into usable heat.
  • A higher AFUE percentage indicates better efficiency. For example, an AFUE of 90% means 90% of the fuel’s energy is converted into heat.

ENERGY STAR® Qualified Products:

  • ENERGY STAR® is a program developed by the US Environmental Protection Agency (EPA) and the US Department of Energy.
  • Its goal is to promote energy efficiency and minimize greenhouse gas emissions.
  • ENERGY STAR® rated Products are appliances, electronics, and other devices that meet strict energy efficiency guidelines set by the program.

Remember that the right choice depends on specific needs, budget, and climate considerations. Watch this video from Goodman Airconditioning & Heating to learn more.

Now, let’s meet the key players driving energy efficiency and remarkable innovation in HVAC technology:

12 Most Energy Efficient HVAC Companies in 2024


First Hydrogen

HQ Location
London, England
Num. of Employees
First Hydrogen Homepage

First Hydrogen specializes in the development of advanced electrolysis systems for green hydrogen production. Their technology focuses on improving efficiency and scalability while reducing costs associated with electrolysis.



HQ Location
Num. of Employees
Lhyfe Homepage

Lhyfe is a French company pioneering the production of green hydrogen from biomass electrolysis. Their unique approach involves converting organic waste materials into hydrogen through an electrolysis process powered by renewable energy sources.

Plug Power

HQ Location
New York, USA
Num. of Employees

Plug Power is a company that specializes in offering hydrogen fuel cell solutions. Many different ways in which material handling equipment can be utilized, such as stationary power systems and transportation vehicles. Their ProGen fuel cell engines offer high efficiency and reliability, enabling customers to reduce operating costs and carbon emissions.

Plug Power also provides comprehensive hydrogen infrastructure solutions, including electrolyzers, hydrogen storage systems, and fueling stations. With a proven track record in the hydrogen industry, Plug Power is committed to driving the widespread adoption of clean hydrogen technology.

They invest heavily in research and development to enhance fuel cell performance, increase system efficiency, and lower production costs, making hydrogen-powered solutions more accessible and cost-effective for customers worldwide.

Linde logo


HQ Location
Woking, England
Num. of Employees
Linde Homepage

Linde is a company that specializes in industrial gases and engineering on a global scale. Their emphasis is on creating sustainable solutions, one of which is green hydrogen. They offer a comprehensive portfolio of hydrogen production technologies, including electrolysis, steam methane reforming with carbon capture, and biomass gasification.

Linde also provides hydrogen transportation and storage solutions, as well as hydrogen fueling infrastructure for various applications. Linde is dedicated to promoting innovation and environmental consciousness and is playing a major role in leading the global shift towards a hydrogen-based economy.

A team of skilled engineers and scientists are diligently working on exploring the latest developments in hydrogen technology. Their focus is on collaborating with different industries in order to develop customized solutions that cater to the unique requirements of their clients. Their end goal is to promote the growth and development of the hydrogen market on a global scale.


FuelCell Energy

HQ Location
Connecticut, USA
Num. of Employees
FuelCell Homepage

FuelCell Energy is a leading provider of fuel cell solutions for clean power generation and hydrogen production. Their solid oxide electrolysis systems enable efficient and cost-effective hydrogen production from renewable energy sources such as wind and solar.

FuelCell Energy also offers stationary fuel cell systems for distributed power generation, providing reliable and resilient electricity for various applications. With a focus on sustainability and reliability, FuelCell Energy is advancing the adoption of hydrogen as a clean energy solution.

They are continuously conducting research and development activities to enhance the performance of their electrolyzers, improve the efficiency of their systems, and integrate renewable energy sources to reduce carbon emissions and decrease dependence on fossil fuels.


HQ Location
Beijing, China
Num. of Employees

Sinopec, a major Chinese company that specializes in energy and chemical production, has been actively engaged in the production and use of green hydrogen. Leveraging its expertise in refining and petrochemicals, Sinopec is studying the production of hydrogen from various sources, including natural gas reforming with carbon capture and storage.

Sinopec is committed to promoting hydrogen as a clean energy carrier in China by investing in hydrogen fueling infrastructure and fuel cell vehicle technologies. With a focus on innovation and sustainability, Sinopec is driving the transition to a low-carbon energy future.

Their research and development initiatives aim to improve the efficiency and environmental performance of hydrogen production processes, develop new hydrogen storage and transportation technologies, and expand the application of hydrogen across industries to support China’s ambitious carbon reduction goals.

Air Liquide logo

Air Liquid

HQ Location
Paris, France
Num. of Employees
green hydrogen companies - Air Liquide Homepage

Air Liquide is a global leader in industrial gases and technologies, with a strong commitment to sustainability and innovation. Their portfolio includes a diverse set of technologies for generating hydrogen, such as electrolysis, steam methane reforming with carbon capture, and biomass gasification.

Air Liquide offers hydrogen storage and distribution solutions, along with hydrogen fueling stations that cater to mobility applications. The organization is dedicated to decreasing carbon emissions and encouraging the adoption of clean energy alternatives, thereby paving the way toward a future that relies on hydrogen power.

The company is committed to conducting thorough research and development to enhance the effectiveness and dependability of hydrogen production technologies. They are also working towards improving hydrogen storage and distribution systems, as well as advancing hydrogen fueling infrastructure to promote the increased use of hydrogen as a clean and eco-friendly energy

BP logo


HQ Location
London, UK
Num. of Employees
BP Homepage

BP, a renowned energy corporation, has incorporated green hydrogen in its plan to accelerate the energy transition. The company is engaged in a range of green hydrogen initiatives, such as the development of renewable energy and electrolysis.

BP aims to integrate green hydrogen into its existing portfolio of energy products and services, leveraging its global presence and technical expertise. With a focus on innovation and sustainability, BP is exploring new opportunities to decarbonize the energy sector with green hydrogen.

Their research and development initiatives focus on improving the efficiency and cost-effectiveness of electrolysis technology, scaling up renewable energy production capacity, and developing innovative hydrogen storage and transportation solutions to support the widespread adoption of hydrogen as a clean and sustainable energy source.

NEOM Green Hydrogen Company

HQ Location
Tabuk, Saudi Arabia
Num. of Employees
Neome Homepage

Neom Green Hydrogen Company is a joint venture between Air Products, ACWA Power, and Neom, dedicated to developing green hydrogen projects in Saudi Arabia. They aim to leverage the abundant renewable energy resources in the region to produce low-cost green hydrogen at scale.

Neom Green Hydrogen Company aims to build extensive electrolysis plants that will run on solar and wind energy. This will help in fulfilling the Kingdom’s goal of transforming into a worldwide center for the production and export of eco-friendly hydrogen.

With a focus on sustainability and economic development, Neom Green Hydrogen Company is driving the growth of the green hydrogen industry in the Middle East.

Their collaborative approach brings together expertise from leading companies in the fields of hydrogen production, renewable energy, and infrastructure development to accelerate the transition to a sustainable energy future in Saudi Arabia and beyond.



HQ Location
San Roman, California, USA
Num. of Employees
green hydrogen companies - Chevron Hompeage

Chevron, a major energy company, is exploring opportunities in green hydrogen as part of its commitment to sustainability and decarbonization. They are involved in various green hydrogen projects, including electrolysis and renewable energy integration.

Chevron aims to leverage its global presence and technical expertise to advance the development and commercialization of green hydrogen technologies. With a focus on innovation and collaboration, Chevron is making efforts to move towards an energy future that is both sustainable and environmentally friendly.

They are dedicated to enhancing the effectiveness and dependability of electrolysis technology, cutting down the expenses of producing renewable energy and creating advanced storage and transportation methods for hydrogen. Their ultimate goal is to encourage the extensive use of hydrogen as a sustainable and eco-friendly energy source.

Bloom Energy

HQ Location
San Jose, California, USA
Num. of Employees
green hydrogen companies - BloomEnergy

Bloom Energy is a company that specializes in developing solid oxide fuel cell technology to generate clean Power and produce hydrogen. Their fuel cell systems are designed to efficiently convert renewable biogas or natural gas into electricity and hydrogen while keeping emissions to a minimum.

Bloom Energy also offers electrolysis systems for on-site hydrogen production using renewable energy sources. With a focus on reliability and scalability, Bloom Energy is driving the adoption of hydrogen as a clean energy solution for various applications, including grid stability, backup power, and transportation.

Their research and development efforts focus on improving fuel cell efficiency, increasing system reliability, and reducing production costs to make hydrogen-powered solutions more accessible and cost-effective for customers worldwide.

Nel Hydrogen

HQ Location
Oslo, Norway
Num. of Employees
Nel Homepage

Nel Hydrogen is a global leader in electrolysis technology for hydrogen production. They offer a range of electrolyzers that enable efficient and cost-effective hydrogen production from renewable energy sources such as wind and solar.

Nel Hydrogen’s electrolysis systems are scalable and modular, making them suitable for various applications, from industrial processes to fueling stations for hydrogen-powered vehicles. With a focus on innovation and sustainability, Nel Hydrogen is at the forefront of advancing the hydrogen economy and accelerating the transition to a carbon-neutral energy future.

Their research and development initiatives focus on improving electrolyzer efficiency, increasing system reliability, and reducing production costs to make green hydrogen competitive with conventional fossil fuels.


In Summary

These top HVAC brands stand out as leaders in the ever-evolving landscape of environmental comfort and energy efficiency. Whether with cutting-edge technology, superior performance, or environmental responsibility, these companies are creating comfortable living and working spaces while minimizing energy consumption.

Their efforts, combined with other approaches, such as eco-building strategies, could bring about significant positive change in the future.

Frequently Asked Questions

How do I choose a new HVAC system?

When considering a new HVAC systems it's important to consider you specific needs, budget and space. Be sure to take note of the systems energy efficiency rating as this will guarantee that whatever you choose, you are sure to save money and minimise your environmental impact.

When should an HVAC system be replaced?

Furnaces tend to last 15 to 20 years, and air conditioning units and heat pumps have a life expectancy of 10 to 12 years. Replacing commercial HVAC equipment before it fails entirely can save you time and money. It's also important to stay up to date with the latest energy-saving technology features for all the reasons we have already listed. If your HVAC installation is 10 years or older, this may be the time to look at updating your system.

How can I increase the life and efficiency of our HVAC system?

Proactive care and attention can ensure that you system functions at peak efficiency for as long as possible. For example, consistent maintenance is crucial. Simple tasks like changing air filters regularly, scheduling annual or seasonal tune-ups, and cleaning outside components can significantly prolong your system’s useful life. Also, keep in mind that continuous operation can strain components, so be sure to set you thermostat to auto mode where possible or switch the system off when not needed to conserve energy and promote longevity.


Straits ResearchGlobal Energy Efficient HVAC Systems Market Insights 

ENERGY STAR® GOVEnergy Efficient Products

Grand View Research –  U.S. HVAC Systems Market Size, Share & Trends Analysis Report

Department of EnergyHeating, Ventilation, and Air Conditioning (HVAC)

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