Shot of a mature man shopping in the cold produce section of a supermarket

Air Conditioning, Refrigeration and Heating

Honeywell has invested a billion dollars in research, development, and new capacity for Solstice® HFO technology to help businesses transition to lower-carbon future and deliver outstanding business results.

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As refrigeration is a key component of your business, the choice of refrigerant matters. That’s why, the decision about choosing the right refrigerant is as much commercial, as it’s technical. Whether you’re building new or retrofitting an existing refrigeration system, Honeywell has the expertise to help you meet energy efficiency and sustainability goals, without sacrificing system performance. We invite you to speak with our expects to discuss how choosing a right refrigerant can help you achieve better business outcomes.

Explore our range of lower-GWP and energy efficient refrigerants

Solstice® HFOs

Hydrofluoroolefins (HFOs) are the fourth-generation of fluorinated materials that are used as refrigerant, blowing agents, propellants, and solvents. They have ultra-low global warming potentials, and are non-ozone-depleting.

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Solstice® HFO Blends

Honeywell’s HFO blended refrigerants combine low or reduced global warming potential refrigerants with increased energy efficiency.

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Food Retail

Solstice^® HFO Refrigerants provide more efficient cooling and heating for your supermarket.

Some 50% of the energy used in supermarkets supports refrigeration. To meet environmental targets and financial goals, supermarket operators and food retailers need sustainable solutions now. Solstice^® HFO refrigerants are engineered to attain carbon neutrality faster, and within budget.

Why choose Solstice® HFO Refrigerants for your supermarket?

Lowers costs

Reducing energy consumption, lowering operating costs and avoiding downtime are critical to your bottom line. Solstice® HFO refrigerants allow you to reimagine your refrigeration without reengineering your operations. They also offer opportunities for remodeling existing systems without time-consuming, expensive changeovers and capital expenditure, all while delivering maximum customer safety and operating efficiency.

Solstice refrigerant: Better for the planet - Honeywell Advanced Materials

Reduces environmental impact

Solstice® HFO refrigerants for retrofit, low-cost remodeling and new systems are engineered to help supermarket owners become carbon neutral faster. They have low GWP, are energy-efficient, and unlike alternative refrigerants, are non-toxic, mildly or non-flammable and operate at safe pressure levels.

Honeywell Solstice Refrigerant - Safe and Environmentally Friendly Option for Cooling Systems

Suitable for different store sizes

No matter the footprint of your store or supermarket, Solstice® HFO refrigerants combine the performance, safety and reliability that businesses and consumers expect, with the efficiency and minimum environmental impact the world needs now.

Industrial Processes

Solstice^® HFO Refrigerants drive industrial process efficiently

Most industrial processes harness heating and cooling to ensure the correct quality, shape and form of the product being produced. Whether air, water or steam, the carbon footprint of cooling and heating energy has a significant influence on Scope 1 emissions – a key focus of any ESG agenda. Reducing carbon emissions starts with optimizing processes and identifying quick wins that can have positive financial and environmental impact. Low GWP Honeywell Solstice^® ze (R-1234ze) and Solstice^® zd (R-1233zd) refrigerants are designed to increase the energy efficiency and reduce the emissions of heating, cooling and refrigeration applications such as the medium and high-temperature heat pumps that power industrial heat sink applications. In addition, Solstice^® HFO refrigerants are non-toxic and mildly or non-flammable, unlike conventional solutions such as ammonia.

Why choose Solstice HFO Refrigerant for your industrial processes?

Increases energy efficiency

Optimizes the energy cost of your manufactured product.

Reduces environmental impact

The low GWP and low ozone depletion potential of Solstice® HFO refrigerants support carbon reduction journeys.

Increases safety

Solstice® HFO refrigerants are non-toxic and non-flammable, making them a safe choice for industrial processes.

Lowers cost

Systems powered by Solstice® HFO refrigerants deliver higher CAPEX savings than those that use conventional refrigerants.

Reduces maintenance

Systems powered by Solstice® HFO refrigerants require less complex maintenance than those using conventional refrigerants due to hermetic compressors and lower circuit pressures.

Commercial Buildings

Solstice^® HFO refrigerants drive heating and cooling efficiency in commercial buildings.

Buildings are responsible for 40% of global energy consumption and 36% of greenhouse gas emissions. Moving toward renewable energy and eliminating fossil fuels in buildings is key to reducing emissions, lowering energy costs and tackling climate change. Honeywell Solstice® HFO refrigerants use scroll, oil-free or screw technology to meet the requirements of air-cooled and water-cooled chillers and heat pumps.

Why choose Solstice® HFO Refrigerants for your commercial building?

Lower operating costs

Reduce your energy bills by replacing your natural gas-dependent boiler with an energy-efficient heat pump or an integrated heating and cooling heat pump. While Solstice® HFO refrigerants provide higher efficiency than gas boilers, Solstice® GBA and LBA foams provide effective roof and wall insulation that helps reduce energy bills and complies with the EU Ecodesign Directive. In addition, by being more energy efficient, they reduce your building’s carbon footprint and conserve natural resources.

Lower your footprint

Decarbonise your heating and cooling systems by moving to a single, ultra-low GWP system that eliminates the use of fossil fuel in your building and enables regulatory compliance. Under the EU Green Deal, some European countries have banned fossil fuel gas boilers in new buildings and applied extra tax on equipment that uses high GWP refrigerants. With GWP as low as 1, Solstice® HFO refrigerants are significantly greener than R-134a (GWP=1430) and R-410A (GWP=2088) refrigerants, leading to a 99% reduction in CO₂ emissions. Moreover, Solstice® HFO refrigerants molecules have zero ozone depleting potential and a short atmospheric life, reducing environmental impact and facilitating regulatory compliance.

Improves safety

Solstice® HFO refrigerants are classified in safety groups A1 (non-flammable) or A2L (mildly flammable), making them significantly safer than alternatives such as propane, which is classified as A3 (highly flammable). This brings peace of mind to end users who benefit from a safer indoor environment as well as building contractors who benefit from lower maintenance, insurance and logistics costs.

Data Centers

Solstice^® refrigerants are engineered to deliver room and precision air conditioning in Data Centers. As chips and electronics become hotter and more powerful, two-phase liquid cooling solutions using Solstice fluids enable energy-efficient and uniform cooling, better heat rejection, and reduced pumping power.

Applications include:

Room and precision air conditioning
Liquid cooling (cold plates)

Key Refrigerants

Solstice^® 454B (R-454B):
Mildly flammable (A2L refrigerant), non-ozone depleting, zeotropic blend. It outperforms other refrigerant alternatives in normal and high ambient conditions in a variety of applications because of its high critical temperature and broader operating envelope in low evaporating temperatures. Learn more
Solstice^® ze (R-1234ze):
Mildly flammable (A2L refrigerant), ultra-low GWP, and energy-efficient alternative to R-134a in air-cooled and water-cooled chillers and heat pumps. Learn more
Solstice^® zd (R-1233zd):
Nonflammable (A1), ultra-low GWP of <1, offering better capacity and similar efficiency to R-123. Addresses the challenging environmental needs of different industries such as centrifugal chillers and high-temperature heat pumps. Learn more

Solstice^® N15 (R-515B):
WIth a GWP of 293, this nonflammable (A1), azeotropic blend demonstrates environmental and performance benefits in new systems. Due to capacity and efficiency matches, it can be used in equipment designed for R-1234ze. Learn more

Residential Buildings

Solstice^® HFO Refrigerants make decarbonising residential heating easier

Rapid heat pump deployment is an integral part of REPowerEU, the European Commission’s plan to ensure energy independence from Russia before 2030. It’s also instrumental for achieving the region’s 2050 net zero target. Households across Europe account for 27% of final energy consumption while 79% of household energy is channelled into space and water heating. Honeywell Solstice^® HFO refrigerants provide compelling benefits across the residential value chain: forward-thinking heat pump manufacturers gain a low-cost opportunity to decarbonize home heating systems; homeowners can cost-effectively replace fossil fuel boilers with a source of clean heat; and installers get a solution that can be safely implemented and serviced.

Why choose Solstice® HFO Refrigerants for residential heating?

Solstice refrigerant icon for residential buildings

Reduces application costs

Designing a heat pump based on Solstice refrigerant is less expensive than developing one using propane.

Solstice refrigerant icon for residential buildings

Provides application flexibility

Solstice® HFO refrigerants based heat pumps can be used across most heat pump applications and property types.

Honeywell Solstice Refrigerant - Safe and Environmentally Friendly Option for Cooling Systems

Increases safety

Classed as A2L (mildly flammable), Solstice® HFO refrigerants are safer to install and service than A3 (highly flammable)-classed propane.

Solstice refrigerants: Better for your bottom line

Boosts energy efficiency

Heat pump systems using Solstice® HFO refrigerants can be optimized to be more efficient than propane heat pumps, reducing their lifetime cost.

Automotive Refrigerants

Transport refrigeration is one of the most challenging refrigeration applications, and therefore transport refrigeration systems require refrigerants that are efficient and reliable to keep in-transit supplies fresh and preserved.

Solstice® 452A

Low GWP and nonflammable alternative to R-404A and R-507 for low- and medium-temperature applications in existing and new systems
Matched compressor discharge temperature of R-404A and R-507 at both low- and medium-temperature conditions Learn more

Food Retail

Solstice^® HFO Refrigerants provide more efficient cooling and heating for your supermarket.

Some 50% of the energy used in supermarkets supports refrigeration. To meet environmental targets and financial goals, supermarket operators and food retailers need sustainable solutions now. Solstice^® HFO refrigerants are engineered to attain carbon neutrality faster, and within budget.

Why choose Solstice® HFO Refrigerants for your supermarket?

Lowers costs

Reducing energy consumption, lowering operating costs and avoiding downtime are critical to your bottom line. Solstice® HFO refrigerants allow you to reimagine your refrigeration without reengineering your operations. They also offer opportunities for remodeling existing systems without time-consuming, expensive changeovers and capital expenditure, all while delivering maximum customer safety and operating efficiency.

Solstice refrigerant: Better for the planet - Honeywell Advanced Materials

Reduces environmental impact

Solstice® HFO refrigerants for retrofit, low-cost remodeling and new systems are engineered to help supermarket owners become carbon neutral faster. They have low GWP, are energy-efficient, and unlike alternative refrigerants, are non-toxic, mildly or non-flammable and operate at safe pressure levels.

Honeywell Solstice Refrigerant - Safe and Environmentally Friendly Option for Cooling Systems

Suitable for different store sizes

No matter the footprint of your store or supermarket, Solstice® HFO refrigerants combine the performance, safety and reliability that businesses and consumers expect, with the efficiency and minimum environmental impact the world needs now.

Industrial Processes

Solstice^® HFO Refrigerants drive industrial process efficiently

Most industrial processes harness heating and cooling to ensure the correct quality, shape and form of the product being produced. Whether air, water or steam, the carbon footprint of cooling and heating energy has a significant influence on Scope 1 emissions – a key focus of any ESG agenda. Reducing carbon emissions starts with optimizing processes and identifying quick wins that can have positive financial and environmental impact. Low GWP Honeywell Solstice^® ze (R-1234ze) and Solstice^® zd (R-1233zd) refrigerants are designed to increase the energy efficiency and reduce the emissions of heating, cooling and refrigeration applications such as the medium and high-temperature heat pumps that power industrial heat sink applications. In addition, Solstice^® HFO refrigerants are non-toxic and mildly or non-flammable, unlike conventional solutions such as ammonia.

Why choose Solstice HFO Refrigerant for your industrial processes?

Increases energy efficiency

Optimizes the energy cost of your manufactured product.

Reduces environmental impact

The low GWP and low ozone depletion potential of Solstice® HFO refrigerants support carbon reduction journeys.

Increases safety

Solstice® HFO refrigerants are non-toxic and non-flammable, making them a safe choice for industrial processes.

Lowers cost

Systems powered by Solstice® HFO refrigerants deliver higher CAPEX savings than those that use conventional refrigerants.

Reduces maintenance

Systems powered by Solstice® HFO refrigerants require less complex maintenance than those using conventional refrigerants due to hermetic compressors and lower circuit pressures.

Commercial Buildings

Solstice^® HFO refrigerants drive heating and cooling efficiency in commercial buildings.

Buildings are responsible for 40% of global energy consumption and 36% of greenhouse gas emissions. Moving toward renewable energy and eliminating fossil fuels in buildings is key to reducing emissions, lowering energy costs and tackling climate change. Honeywell Solstice® HFO refrigerants use scroll, oil-free or screw technology to meet the requirements of air-cooled and water-cooled chillers and heat pumps.

Why choose Solstice® HFO Refrigerants for your commercial building?

Lower operating costs

Reduce your energy bills by replacing your natural gas-dependent boiler with an energy-efficient heat pump or an integrated heating and cooling heat pump. While Solstice® HFO refrigerants provide higher efficiency than gas boilers, Solstice® GBA and LBA foams provide effective roof and wall insulation that helps reduce energy bills and complies with the EU Ecodesign Directive. In addition, by being more energy efficient, they reduce your building’s carbon footprint and conserve natural resources.

Lower your footprint

Decarbonise your heating and cooling systems by moving to a single, ultra-low GWP system that eliminates the use of fossil fuel in your building and enables regulatory compliance. Under the EU Green Deal, some European countries have banned fossil fuel gas boilers in new buildings and applied extra tax on equipment that uses high GWP refrigerants. With GWP as low as 1, Solstice® HFO refrigerants are significantly greener than R-134a (GWP=1430) and R-410A (GWP=2088) refrigerants, leading to a 99% reduction in CO₂ emissions. Moreover, Solstice® HFO refrigerants molecules have zero ozone depleting potential and a short atmospheric life, reducing environmental impact and facilitating regulatory compliance.

Improves safety

Solstice® HFO refrigerants are classified in safety groups A1 (non-flammable) or A2L (mildly flammable), making them significantly safer than alternatives such as propane, which is classified as A3 (highly flammable). This brings peace of mind to end users who benefit from a safer indoor environment as well as building contractors who benefit from lower maintenance, insurance and logistics costs.

Data Centres

Data Centers

Solstice^® refrigerants are engineered to deliver room and precision air conditioning in Data Centers. As chips and electronics become hotter and more powerful, two-phase liquid cooling solutions using Solstice fluids enable energy-efficient and uniform cooling, better heat rejection, and reduced pumping power.

Applications include:

Room and precision air conditioning
Liquid cooling (cold plates)

Key Refrigerants

Solstice^® 454B (R-454B):
Mildly flammable (A2L refrigerant), non-ozone depleting, zeotropic blend. It outperforms other refrigerant alternatives in normal and high ambient conditions in a variety of applications because of its high critical temperature and broader operating envelope in low evaporating temperatures. Learn more
Solstice^® ze (R-1234ze):
Mildly flammable (A2L refrigerant), ultra-low GWP, and energy-efficient alternative to R-134a in air-cooled and water-cooled chillers and heat pumps. Learn more
Solstice^® zd (R-1233zd):
Nonflammable (A1), ultra-low GWP of <1, offering better capacity and similar efficiency to R-123. Addresses the challenging environmental needs of different industries such as centrifugal chillers and high-temperature heat pumps. Learn more

Solstice^® N15 (R-515B):
WIth a GWP of 293, this nonflammable (A1), azeotropic blend demonstrates environmental and performance benefits in new systems. Due to capacity and efficiency matches, it can be used in equipment designed for R-1234ze. Learn more

Residential Buildings

Solstice^® HFO Refrigerants make decarbonising residential heating easier

Rapid heat pump deployment is an integral part of REPowerEU, the European Commission’s plan to ensure energy independence from Russia before 2030. It’s also instrumental for achieving the region’s 2050 net zero target. Households across Europe account for 27% of final energy consumption while 79% of household energy is channelled into space and water heating. Honeywell Solstice^® HFO refrigerants provide compelling benefits across the residential value chain: forward-thinking heat pump manufacturers gain a low-cost opportunity to decarbonize home heating systems; homeowners can cost-effectively replace fossil fuel boilers with a source of clean heat; and installers get a solution that can be safely implemented and serviced.

Why choose Solstice® HFO Refrigerants for residential heating?

Solstice refrigerant icon for residential buildings

Reduces application costs

Designing a heat pump based on Solstice refrigerant is less expensive than developing one using propane.

Solstice refrigerant icon for residential buildings

Provides application flexibility

Solstice® HFO refrigerants based heat pumps can be used across most heat pump applications and property types.

Honeywell Solstice Refrigerant - Safe and Environmentally Friendly Option for Cooling Systems

Increases safety

Classed as A2L (mildly flammable), Solstice® HFO refrigerants are safer to install and service than A3 (highly flammable)-classed propane.

Solstice refrigerants: Better for your bottom line

Boosts energy efficiency

Heat pump systems using Solstice® HFO refrigerants can be optimized to be more efficient than propane heat pumps, reducing their lifetime cost.

Automotive Refrigerants

Transport refrigeration is one of the most challenging refrigeration applications, and therefore transport refrigeration systems require refrigerants that are efficient and reliable to keep in-transit supplies fresh and preserved.

Solstice® 452A

Low GWP and nonflammable alternative to R-404A and R-507 for low- and medium-temperature applications in existing and new systems
Matched compressor discharge temperature of R-404A and R-507 at both low- and medium-temperature conditions Learn more

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ADVANCED MATERIALS

Air Conditioning, Refrigeration and Heating

Explore our range of lower-GWP and energy efficient refrigerants